PRODUCTS

SODIUM NITRITE

Sodium nitrite is an inorganic compound with the chemical formula NaNO2. It is a white to slightly yellowish crystalline powder that is very soluble in water and is hygroscopic. From an industrial perspective, it is the most important nitrite salt. It is a precursor to a variety of organic compounds, such as pharmaceuticals, dyes, and pesticides, but it is probably best known as a food additive used in processed meats and (in some countries) in fish products.

CAS NO:7632-00-0
EC NO:231-555-9

IUPAC NAMES:

2,4-dichlorophénoxyacétate de dimethylammonium
2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one
dusitan sodný
NITROUS ACID SODIUM SALT
Nitrous acid, sodium salt
Nitrous acid, sodium salt
Nitrous acid, sodium salt (1:1)
Sodium Nitrate
Sodium nitrate
sodium nitrate
Sodium Nitrite
Sodium nitrite
sodium nitrite
Sodium nitrite
sodium nitrite
Sodium Nitrite [for General Organic Chemistry]
sodium;nitrite
Sofium Nitrite

SYNONYMS:
SODIUM NITRITE
NITRITE CONCENTRATE ION STANDARD
NITRITE ION CHROMATOGRAPHY STANDARD
NITRITE SOLUTION
NITRITE STANDARD
NITRITE STANDARD SOLUTION
Sodium nitrite, contains an anticaking reagent, extra pure, 99%
Sodium nitrite, for analysis ACS, 97+%
Sodium nitrite, 98.5%, for analysis
Sodium nitrite, 97+%, for analysis ACS
Sodium nitrite, for analysis
Sodium nitrite, for analysis ACS
Sodium Nitrite [for General Organic Chemistry]
NANO2(SODIUM NITRITE
SODIUM NITRITE, SUPER FREE-FLOWING, 99.5
SODIUM NITRITE TECHNICAL
SODIUM NITRITE 40 WT. % SOLUTION IN WA&
SODIUM NITRITE SUPER FREE-FLOWING 99.&
Sodium nitrite, 99.99+% metals basis
SODIUM NITRITE R. G., REAG. ACS, REAG. P H. EUR.
Sodium nitrite, 99.999% metals basis
SODIUM NITRITE, ACS
SODIUM NITRITE STD SOLUTION 1 MOL/L N14, 1 L
SODIUM NITRITE STD SOLUTION 0.1 MOL/L N12, 1 L
SODIUM NITRITE STD SOLUTION 4 MOL/L N42, 1 L
YTTERBIUM TRIS(3-(TRIFLUOROMETHYLHYDROX&
SODIUM NITRITE EXTRA PURE, DAB 8, B. P. C., U. S. P., FCC
SODIUM NITRITE, 40 WT. % SOLUTION IN WAT ER
SODIUM NITRITE, POWDER, -325 MESH, 97%
SODIUM NITRITE ACS REAGENT
SODIUM NITRITE POWDER -325 MESH 97%
SODIUM NITRITE STD SOLUTION 0.2 MOL/L N13, 1 L
SodiumNitriteUsp
SodiumNitriteAr
SodiumNitriteGr
SodiumNitriteNaNO2
SodiumNitrite99%Min
SodiumNitriteExtraPure
SodiumNitriteFcc
SodiumNitriteUsp-27
Sodiumnitrite,98%
Sodium nitrite ACS reagent, >=97.0%
Sodium nitrite puriss. p.a., ACS reagent, reag. Ph. Eur., >=99%
SodiuM Nitrite, 99 Percent
SodiuM Nitrite, GR ACS
Sodium Nitrite (1 g) (AS)
SodiuM nitrite, for analysis ACS, 97+% 500GR
SodiuM nitrite, for analysis ACS, 97+% 5GR
SodiuM nitrite, for analysis, 98.5% 1KG
Sodium Nitrite, Crystal
SODIUM NITRITE STD SOL. 1MOL/L, N14, 1L
Sodium nitrite, synthesis grade
Sodium nitrite, reagent grade, ACS
Sodium nitrite/ 99+%/ ACS
SODIUM NITRITE, SOLUTION, 5%
SODIUM NITRITE, SOLUTION, 0.5 N
SODIUMNITERITE
Sodium nitrite,99%,extra pure,contains an anticaking reagent

SODIUM NITRITE

Uses
Industrial chemistry
The main use of sodium nitrite is for the industrial production of organonitrogen compounds. It is a reagent for conversion of amines into diazo compounds, which are key precursors to many dyes, such as diazo dyes. Nitroso compounds are produced from nitrites. These are used in the rubber industry.[3]

It is used in a variety of metallurgical applications, for phosphatizing and detinning.[3]

Sodium nitrite is an effective corrosion inhibitor and is used as an additive in industrial greases,[4] as an aqueous solution in closed loop cooling systems, and in a molten state as a heat transfer medium.[5]

Medication
Main article: Sodium nitrite (medical use)
Sodium nitrite is an efficient drug in case of cyanide poisoning. It is used together with sodium thiosulfate.[6] It is on the World Health Organization's List of Essential Medicines.[7]

Food additive and preservative
Sodium nitrite is used to speed up the curing of meat and also impart an attractive pink color.[8][9] Nitrite reacts with the meat myoglobin to cause color changes, first converting to nitrosomyoglobin (bright red), then, on heating, to nitrosohemochrome (a pink pigment).[10]

The meat-packing industry has falsely claimed nitrite is used to prevent botulism (see also Inhibition of microbial growth).[8] Several large meat processors produce processed meats without relying on nitrite or nitrate.[11][8]

Historically, salt has been used for the preservation of meat. The salt-preserved meatproduct was usually brownish-gray in color. When sodium nitrite is added with the salt, the meat develops a red, then pink color, which is associated with cured meats such as ham, bacon, hot dogs, and bologna.[12]

In the early 1900s, irregular curing was commonplace. This led to further research surrounding the use of sodium nitrite as an additive in food, standardizing the amount present in foods to minimize the amount needed while maximizing its food additive role.[13] Through this research, sodium nitrite has been found to give taste and color to the meat; inhibit lipid oxidation that leads to rancidity; with varying degrees of effectiveness for controlling growth of disease-causing microorganisms.[13] The ability of sodium nitrite to address the above-mentioned issues has led to production of meat with extended storage life and has improved desirable color/taste. According to scientists working for the meat industry,[14] nitrite has improved food safety.[13] However, this view is widely disputed in the light of its ineffectiveness against botulism and the carcinogenic effects caused by adding nitrites to meat.[8]

Nitrite has the E number E250. Potassium nitrite (E249) is used in the same way. It is approved for usage in the EU,[15][16] USA[17] and Australia and New Zealand.[18]

Color and taste
The appearance and taste of meat is an important component of consumer acceptance.[13] Sodium nitrite is responsible for the desirable red color (or shaded pink) of meat.[13] Very little nitrite is needed to induce this change.[13] It has been reported that as little as 2 to 14 parts per million (ppm) is needed to induce this desirable color change.[19] However, to extend the lifespan of this color change, significantly higher levels are needed.[19] The mechanism responsible for this color change is the formation of nitrosylating agents by nitrite, which has the ability to transfer nitric oxide that subsequently reacts with myoglobin to produce the cured meat color.[19] The unique taste associated with cured meat is also affected by the addition of sodium nitrite.[13] However, the mechanism underlying this change in taste is still not fully understood.[19]

Inhibition of microbial growth
A 2018 study by the British Meat Producers Association determined that legally permitted levels of nitrite have no effect on the growth of the Clostridium botulinum bacteria which causes botulism, in line with the UK’s Advisory Committee on the Microbiological Safety of Food opinion that nitrites are not required to prevent C. botulinum growth and extend shelf life.[20] In some countries, cured-meat products are manufactured without nitrate or nitrite, and without nitrite from vegetable source. Parma ham, produced without nitrite since 1993, was reported in 2018 to have caused no cases of botulism.[8]

Sodium nitrite has had varying degrees of effectiveness for controlling growth of other spoilage or disease causing microorganisms.[13] Even though the inhibitory mechanisms for sodium nitrite are not well known, its effectiveness depends on several factors including residual nitrite level, pH, salt concentration, reductants present and iron content.[19] Furthermore, the type of bacteria also affects sodium nitrites effectiveness.[19] It is generally agreed upon that sodium nitrite is not considered effective for controlling gram-negative enteric pathogens such as Salmonella and Escherichia coli.[19]

Other food additives (such as lactate and sorbate) provide similar protection against bacteria, but do not provide the desired pink color.[21][22]

Inhibition of lipid peroxidation
Sodium nitrite is also able to effectively delay the development of oxidative rancidity.[19] Lipid peroxidation is considered to be a major reason for the deterioration of quality of meat products (rancidity and unappetizing flavors).[19] Sodium nitrite acts as an antioxidant in a mechanism similar to the one responsible for the coloring effect.[19] Nitrite reacts with heme proteins and metal ions, neutralizing free radicals by nitric oxide (one of its byproducts).[19] Neutralization of these free radicals terminates the cycle of lipid oxidation that leads to rancidity.[19]

Production
Industrial production of sodium nitrite follows one of two processes, the reduction of nitrate salts, or the oxidation of lower nitrogen oxides.

One method uses molten sodium nitrate as the salt, and lead which is oxidized, while a more modern method uses scrap iron filings to reduce the nitrate.[3][57]

A more commonly used method involves the general reaction of nitrogen oxides in alkaline aqueous solution, with the addition of a catalyst. The exact conditions depend on which nitrogen oxides are used, and what the oxidant is, as the conditions need to be carefully controlled to avoid over oxidation of the nitrogen atom.[3]

Sodium nitrite has also been produced by reduction of nitrate salts by exposure to heat, light, ionizing radiation, metals, hydrogen, and electrolytic reduction.

Production
Industrial production of sodium nitrite follows one of two processes, the reduction of nitrate salts, or the oxidation of lower nitrogen oxides.

One method uses molten sodium nitrate as the salt, and lead which is oxidized, while a more modern method uses scrap iron filings to reduce the nitrate.[3][57]

Sodium nitrite has also been produced by reduction of nitrate salts by exposure to heat, light, ionizing radiation, metals, hydrogen, and electrolytic reduction.

Chemical reactions
Main articles: nitrite and nitrous acid
In the laboratory, sodium nitrite can be used to destroy excess sodium azide.[59][60]

2 NaN3 + 2 NaNO2 + 4 H+ → 3 N2 + 2 NO + 4 Na+ + 2 H2O
Above 330 °C sodium nitrite decomposes (in air) to sodium oxide, nitric oxide and nitrogen dioxide.[61]

2 NaNO2 → Na2O + NO + NO2
Sodium nitrite can also be used in the production of nitrous acid:

2 NaNO2 + H2SO4 → 2 HNO2 + Na2SO4
The nitrous acid then, under normal conditions, decomposes:

2 HNO 2 → NO 2 + NO + H2O
The resulting nitrogen dioxide hydrolyzes to a mixture of nitric and nitrous acids:

2 NO2 + H2O → HNO3 + HNO2

Consumer Uses
This substance is used in the following products: anti-freeze products, adhesives and sealants, coating products, fillers, putties, plasters, modelling clay, finger paints, metal surface treatment products, non-metal-surface treatment products, inks and toners and lubricants and greases. Other release to the environment of this substance is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners), outdoor use, indoor use in close systems with minimal release (e.g. cooling liquids in refrigerators, oil-based electric heaters) and outdoor use in close systems with minimal release (e.g. hydraulic liquids in automotive suspension, lubricants in motor oil and break fluids).

Article service life
Release to the environment of this substance can occur from industrial use: of articles where the substances are not intended to be released and where the conditions of use do not promote release.
Other release to the environment of this substance is likely to occur from: outdoor use in long-life materials with high release rate (e.g. tyres, treated wooden products, treated textile and fabric, brake pads in trucks or cars, sanding of buildings (bridges, facades) or vehicles (ships)), indoor use in long-life materials with high release rate (e.g. release from fabrics, textiles during washing, removal of indoor paints), indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment) and outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials).
This substance can be found in complex articles, with no release intended: vehicles, Vehicles (e.g. personal vehicles, delivery vans, boats, trains, metro or planes)), machinery, mechanical appliances and electrical/electronic products e.g. refrigerators, washing machines, vacuum cleaners, computers, telephones, drills, saws, smoke detectors, thermostats, radiators, large-scale stationary industrial tools) and machinery, mechanical appliances and electrical/electronic products (e.g. computers, cameras, lamps, refrigerators, washing machines).
This substance can be found in products with material based on: metal (e.g. cutlery, pots, toys, jewellery), metal used for large surface area articles (e.g. construction and building materials used for roof sheets, pipes), metal used for packaging (excluding food packaging), metal used for furniture & furnishings (e.g. outdoor furniture, benches, tables), wood used for large surface area articles (e.g. construction and building materials for floors, claddings), wood used for furniture & furnishings and wood.
This substance is intended to be released from: packaging material for metal parts (releasing grease/corrosion inhibitors).

Widespread uses by professional workers
This substance is used in the following products: anti-freeze products, metal surface treatment products, adhesives and sealants, coating products, fillers, putties, plasters, modelling clay, finger paints, non-metal-surface treatment products and inks and toners.
This substance is used in the following areas: formulation of mixtures and/or re-packaging, offshore mining and building & construction work.
This substance is used for the manufacture of: machinery and vehicles, chemicals and fabricated metal products.
Release to the environment of this substance can occur from industrial use: formulation of mixtures and of substances in closed systems with minimal release.
Other release to the environment of this substance is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners), outdoor use, indoor use in close systems with minimal release (e.g. cooling liquids in refrigerators, oil-based electric heaters) and outdoor use in close systems with minimal release (e.g. hydraulic liquids in automotive suspension, lubricants in motor oil and break fluids).

Formulation or re-packing
This substance is used in the following products: adhesives and sealants, coating products, fillers, putties, plasters, modelling clay, finger paints, metal surface treatment products, non-metal-surface treatment products and inks and toners.
Release to the environment of this substance can occur from industrial use: formulation of mixtures.

Uses at industrial sites
This substance is used in the following products: heat transfer fluids, hydraulic fluids, lubricants and greases, metal working fluids and anti-freeze products.
This substance is used for the manufacture of: chemicals, machinery and vehicles and fabricated metal products.
Release to the environment of this substance can occur from industrial use: as an intermediate step in further manufacturing of another substance (use of intermediates), in the production of articles, as processing aid, of substances in closed systems with minimal release and in processing aids at industrial sites.

Sodium nitrite appears as a yellowish white crystalline solid. Noncombustible but will accelerate the burning of combustible material. If large quantities are involved in a fire or if the combustible material is finely divided, an explosion may result. If contaminated by ammonium compounds, spontaneous decomposition can occur and the resulting heat may ignite surrounding combustible material. Prolonged exposure heat may result in an explosion. Toxic oxides of nitrogen are produced in fires involving this material. Used as a food preservative, and to make other chemicals.

Sodium nitrite is an inorganic sodium salt having nitrite as the counterion. Used as a food preservative and antidote to cyanide poisoning. It has a role as an antimicrobial food preservative, an antihypertensive agent, a food antioxidant, a poison and an antidote to cyanide poisoning. It is a nitrite salt and an inorganic sodium salt.

Sodium nitrite solution appears as a clear colorless to yellow solution. Harmful to the environment and somewhat toxic. Used as a preservative, and to make other chemicals.

*Industry Uses

Corrosion inhibitors and anti-scaling agents
Dyes
Intermediates
Lubricants and lubricant additives
Oxidizing/reducing agents
Plating agents and surface treating agents
Processing aids, not otherwise listed
Processing aids, specific to petroleum production
chemical distribution
water treatment

*Consumer Uses

Agricultural products (non-pesticidal)
Building/construction materials not covered elsewhere
Cleaning and furnishing care products
Fuels and related products
Lubricants and greases
Metal products not covered elsewhere
Paints and coatings
Photographic supplies, film, and photo chemicals
Plastic and rubber products not covered elsewhere
Water treatment products
used in products which are used as cleaners in plating processes, exam

Sodium nitrite is sold as the salt and in solution. The finely crystalline, slightly yellowish salt is marketed in untreated form and also after treatment with aryl alkyl sulfonates. The salt contains ca. 99.0 % sodium nitrite, 0.6 % sodium nitrate, < 0.1 % sodium chloride and sodium sulfate, and < 0.1 % water.

*Industry Processing Sectors
All other basic inorganic chemical manufacturing
All other basic organic chemical manufacturing
All other chemical product and preparation manufacturing
Fabricated metal product manufacturing
Food, beverage, and tobacco product manufacturing
Miscellaneous manufacturing
Nonmetallic mineral product manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other nonmetallic mineral product manufacturing.
Oil and gas drilling, extraction, and support activities

Sodium nitrite (not more than 3% of pesticide formulation) is exempted from the requirement of a tolerance when used as a stabilizer or inhibitor in accordance with good agricultural practice as inert (or occasionally active) ingredients in pesticide formulations applied to growing crops only.

Sodium Nitrite is an oxidizing agent. Mixtures with phosphorus, tin(II) chloride or other reducing agents may react explosively [Bretherick 1979 p. 108-109]. If contaminated by ammonium compounds, spontaneous decomposition can occur and resulting heat may ignite surrounding combustible material. Reacts with acids to form toxic nitrogen dioxide gas. Mixing with liquid ammonia forms dipotassium nitrite, which is very reactive and easily explosive . Melting together wilh an ammonium salt leads to a violent explosion [Von Schwartz 1918 p. 299]. A mixture with potassium cyanide may cause an explosion. Noncombustible but accelerates the burning of all combustible material. If large quantities are involved in fire or if the combustible material is finely divided, an explosion may result. When a little ammonium sulfate is added to fused potassium nitrite, a vigorous reaction occurs attended by flame.

Physicochemical property Chemical formula is NaNO2, in which N has a valency is + III.It is colorless or yellow crystal, the relative density is 2.168 (0℃), the melting point is 271℃, and it is decomposed when 320℃. It is soluble in water, and aqueous solution is alkaline because of nitrate hydrolysis. Sodium nitrite has the characteristics of reduction and oxidation and is mainly oxidation. In acidic solution, the main performance is oxidation. In alkaline solution or in case of strong oxidizing agent, its performance is reduction. With sulfur, phosphorus, organic matter and other friction or impact can cause combustion or explosion. Sodium nitrite can be placed in the air with the oxygen reaction, and gradually produce sodium nitrate: NaNO2+1/2O2=NaNO3.
When using strong acidic sodium nitrite, it can be nitrited to nitric acid. Nitrite is very unstable, easily decomposed into nitrogen dioxide, nitric oxide and water. The nitrogen atoms and oxygen atoms all have a single pair of electrons, which can be used as ligands, and can be used as ligands to form complexes with many metal ions. Sodium nitrite is toxic, carcinogenic substances, using it must be attention. It is used in printing and dyeing industry and organic synthesis. Sodium nitrite is obtained by the reaction of sodium nitrate and lead in a total of hot condtion.
NaNO3+Pb=NaNO2+PbO.
The reaction mixture obtained by hot water treatment, filtration to remove insoluble lead oxide, concentration and crystallization of sodium nitrite crystal can be obtained.

Chemical property
It is white or yellow patch on the orthorhombic crystal or powder. Micro salty and deliquescent. It is soluble in water and liquid ammonia, its aqueous solution is alkaline.

Uses
As send lubricious agent, Sodium nitrite is used in meat products processing.
Sodium nitrite is used as a common analytical reagent, oxidant and diazotization reagent, also used for the synthesis of nitrite and nitroso compound .
Used as a mordant, bleach, metal heat treatment, electroplating, corrosion inhibitor, medicine, used as instrument disinfectant and preservative, etc.
Used as the production for ice dye, sulphur dyes, direct dyes, acid dyes, disperse dyes, basic dyes, hair dye, H hole aid. Also it is used in the production of amino azobenzene, para amino phenol intermediates, etc. Also it is used in production of organic pigments, such as silver bead R, bright red, big red, bright red candle, toluidine mauve, scarlet lake, lithol scarlet, fast bordeaux lake CK, etc. It is used in the manufacture of ethylamine pyrimidine, aminopyrin and so on in the pharmaceutical industry. It is used in the production of vanillin, and used as bleaching for silk and flax and mordant dyeing of fabrics. Also it is used for metal heat treatment and plating corrosion inhibitor. It is used for cutting oil, lubricating oil, antifreeze liquid and hydraulic system.
Sodium nitrite is allowed to use the hair color agent in China. It is excluded nitrite under the action of lactic acid in the meat, and then decompose the nitroso (N0), the latter with myoglobin can generate nitroso myoglobin of the bright red color, and can produce a special flavor. Sodium nitrite can inhibit a variety of anaerobic clostridium spore bacteria, especially for clostridium botulinum. Regulations in China can be used for canning class livestock and poultry meat and meat products, the maximum amount is 0.15 g/kg, Residues (according to sodium nitrite) shall not be more than 0.03 g/kg in meat products, residues of 0.07 g/kg in pickle brine ham. It can also be used in canned meat, shall not be more than 0.05 g/kg.
It is used as a hair color agent in meat products processing, and can be used in canned meat and meat products. It has a certain role on inhibit microbial proliferation in the meat products(with special inhibition on clostridium botulinum), and can improve the flavor of bacon. As a preservative.
It is used as meat send lubricious agent, Antimicrobial agent, and Preservatives.
In Japan, It can be used in canned meat, ham, sausage, bacon, corned beef and other meat products. It can be used as ascorbic acid, ascorbic acid, cysteine and nicotinamide as color auxiliary. The Dosage is reference.

Methods of production
Ammonia is oxidated to nitrous oxide gas, which is with sodium hydroxide or sodium carbonate solution absorption.
The procession of Pb reduction the sodium nitrate The sodium nitrate is heated to melt, adding a small amount of metallic lead, continue to stir and heated to all oxidation of lead. The generated block cooling and divided into small pieces, and several times with hot water extraction generated to lead oxide. Bubbled into carbon dioxide generated lead carbonate precipitation, filtered, with dilute nitric acid and filtrate correctly, the evaporation and crystallization precipitation of concentrated sodium nitrite. After suction, it obtained by dry after washing with ethanol and recrystallization refined again.
2. The method of absorption: The containing tail gas is removed from absorption access to the bottom in the dilute nitric acid production process, the consumption of sodium carbonate solution of 20%~30% down from the tower spray to absorb nox in the exhaust gas, generated neutralization solution. When relative density of the solution is 1.24~1.25, the content of sodium carbonate is 3~5 g/L, the agent of arsenic and heavy metal removal agent purification, filtration to remove impurities such as arsenic and heavy metals, the refined solution by evaporating, cooling crystallization, centrifugal separation, drying, consumption of sodium nitrite was finished. its
Na2CO3 + NO + N02→2NaNO2 + CO2
Na2CO3 + 2N02→NaNO2 + NaNO3 + CO2
The centrifugal separation of the mother liquor, it is used as the material of producing edible sodium nitrate.

3. With caustic soda or soda ash solution absorbing tail gas containing a small amount of NO and NO2 in nitric acid or a nitrate production. In the tail gas of NO/NO2 ratio to adjust to the NaNO2 and NaNO3 in the neutralization liquid ratio below 8. The quality of the liquid in the process of absorption and should avoid acid, so as to avoid corrosion of the equipment. When the relative density of liquid is 1.24~1.25, the content of soda ash is 3~5 g/L and send to evaporation, absorb liquid evaporation concentration at 132 ℃, then cool to 75 ℃, precipitation sodium nitrite in crystallization, then through separation, drying to quick product.
Na2CO3 + NO + NO2→2 NaNO2 + CO2

An inorganic sodium salt having nitrite as the counterion. Used as a food preservative and antidote to cyanide poisoning.

General Description
A yellowish white crystalline solid. Noncombustible but will accelerate the burning of combustible material. If large quantities are involved in a fire or if the combustible material is finely divided, an explosion may result. If contaminated by ammonium compounds, spontaneous decomposition can occur and the resulting heat may ignite surrounding combustible material. Prolonged exposure heat may result in an explosion. Toxic oxides of nitrogen are produced in fires involving Sodium nitrite. Used as a food preservative, and to make other chemicals.

Uses of Sodium Nitrate
Pesticides:Many different pesticides utilize sodium nitrate, including rodenticides (for killing rodents like mice and rats), insecticides (for killing insects and other bugs) and predacides (for killing large pests like raccoons and skunks). Sodium nitrate does not directly poison these pests, but instead, it chemically reacts with other substances (like sulfur) to combust charcoal, according to the Environmental Protection Agency at epa.gov. All of this occurs inside of a cartridge, which then seeps out a toxic gas that is produced by the combustion.
Food Preservatives:Sodium nitrate is also known for its antimicrobial properties. For this reason, it is commonly used for preserving foods, particularly when it comes to curing meats, according to edinformatics.com. Sodium nitrate is not harmful when ingested (as mentioned above, it is found naturally in some vegetables); however, you should make sure not to confuse the compound with sodium nitrite; another preservative, which has been known to produce carcinogenic effects in certain circumstances.
Fireworks:The brilliant colors associated with fireworks are the result of burning metal salts, such as calcium chloride, barium chloride and sodium nitrate. According to scifun.org, the atoms in each salt generate specific colors as they combust, which is a function of how much energy they release. When sodium nitrate combusts, the heated sodium electrons become excited, and eventually release energy at approximately 200 kj/mol. This happens to be the energy amount that produces the color yellow, and for that reason firework makers use sodium nitrate to generate yellow flames and sparks.
Fertilizers:Sodium nitrate is also used as an ingredient in many fertilizers, as a way to increase nitrogen content in soil. In addition to helping prevent soil erosion, nitrogen helps roots grow thick and strong by increasing carbon production in plants, which in turn increases biomass. The majority of mixed fertilizers include sodium nitrate, or another nitrogen-based compound, as one of their three main ingredients, with the other two substances being phosphorus and potassium (although it is also possible to a buy a strictly nitrogen-based fertilizer, if you want). According to ncagr.gov, when choosing a mixed fertilizer, the amount of nitrogen will be the first number listed on the packaging, and usually represents a percentage amount (the second two numbers will indicate phosphorus and potassium content).

Sodium nitrite is similar in name and use to sodium nitrate. Both are preservatives used in processed meats, such as salami, hot dogs, and bacon. Sodium nitrite has been synthesized by several chemical reactions that involve the reduction of sodium nitrate. Industrial production of sodium nitrite is primarily by the absorption of nitrogen oxides into aqueous sodium carbonate or sodium hydroxide.

Sodium Nitrite is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Definition and Usage Areas:

Sodium nitrite is a component in heat transfer salts used by many branches of industry such as the chemical, petrochemical and metalworking industries. Easily soluble in water, results in weak alkaline solutions. The preparation of solutions is accompanied by a decrease in temperature. Sodium nitrite is soluble in aqueous ammonia and various organic solvents (such as ethanediol, propanediol and methanol). Sodium nitrite can act as an oxidizing and reducing agent.

Iron-steel, Al and many other metals do not decompose with sodium nitrite and its solutions. The presence of chlorides and sulfates can promote corrosion of metals. Rubber, plastics, glass, porcelain and ceramics are resistant to sodium nitrite solutions. Treatment of sodium nitrite solutions with acids can result in the formation of nitric acid, which rapidly decomposes into nitro gases with a pale to dark brown color. In deisotization and nitrosation processes, nitric acid can react with other reactants before decomposing into nitrous oxide phases. It reacts with sodium nitrite, ammonium salts, amides and mixtures containing them at room temperature. This reaction can go as far as a violent explosion. Subsequently, exacerbation follows. Similar reactions can occur with rapidly oxidizing products such as sodium and potassium metabisulfite. Powdered with sodium nitrite, wool and cotton and other textile tissues are quickly flammable.

Usage areas

It is used in tank rinsers used for the production of azo dyes, the production of diazo compounds, the production of nitroso and isonitrozo compounds, the stabilization of nitric acid gases, the delivery and storage of butadiene.
For textile dyeing and printing: Dyeing and printing diazotization; oxidation of printing and dyeing with colorless barrel dyes; protection against reduction during printing and dyeing with certain vat dyes; It is used to trigger accelerated oxidation of barrel paints that resist reoxidation.
accelerator during phosphating; in the preparation of baths for hot-worked metals; steel deposition and cast iron; as an additive to alkaline pickling baths of aluminum and aluminum alloys; It is used in neutral cleaner and deactivating baths.
In water recovery systems, cooling water and cooling liquids (antifreezes); in crushing oils, hydraulic fluids, lubricants, extinguishers; in chemical processes; in the production of solid and liquid anti-corrosion agents; in the production of emulsion paints; antioxidant for special soaps; additive for glazing of glass raw materials; in water circulation systems; as an additive in concrete with special properties; as an anti-corrosion agent for steel and iron; It is used in the production of products used to protect oil fuel tanks from corrosion.
It is used as a preservative in foods. Inhibits bacterial growth and discoloration, generally

Sodium nitrite comes in the form of white or off-white powdery crystals that gradually oxidize to sodium nitrate. It is hygroscopic and easily soluble in water (making the water solution alkaline). It is slightly soluble in alcohol and ether and forms brown nitric oxide when decomposed by acid.

Application
* Antifoaming agent for butadiene
* Pharmaceutical raw material (aminopyrine, sulpyrine antipyretic analgesic)
* Foaming agent for polyvinyl chloride
* Heat treatment (salt bath) agent
* Metal surface preparation agent
* Diazotization of azo dye
* Manufacture of nitric oxide
* Chemicals for rubber
* Corrosion inhibitor (mixed with concrete, etc.)

Applications
Sodium nitrite is used in many industrial applications viz. in meat curing, coloring and preserving. It is used as a reagent in analytical chemistry, an antidote in cyanide poisoning, an electrolyte in electrochemical grinding, as a cooling solution in closed loop systems and as an additive in industrial greases. It finds application as a corrosion inhibitor as well as in the rubber industry. In metallurgy, it is used for phosphatizing and detinning. It acts as a precursor to diazo dyes, nitroso compounds and various organic compounds like pharmaceuticals. As a food additive, it is used to prevent botulism.

Nitrous acid, also known as NANO2 or natrium nitrit, belongs to the class of inorganic compounds known as alkali metal nitrites. These are inorganic compounds in which the largest oxoanion is nitrite, and in which the heaviest atom not in an oxoanion is an alkali metal. Nitrous acid is an extremely weak basic (essentially neutral) compound (based on its pKa). Nitrous acid has been detected, but not quantified in, fishes. This could make nitrous acid a potential biomarker for the consumption of these foods. Nitrous acid is a potentially toxic compound.

Sodium Nitrite, chemical formula NaNO2, is a pale straw-colored material that is highly soluble in water. Sodium Nitrite is used in many industrial applications including the manufacturing of diazo dyes, and other organic compounds used in the manufacture of organic pigments for the paint, dye and printing ink industries. In metal processing, it is used in phosphatizing and detinning applications. As a molten salt bath, it is used in heat treating of metal parts in the automotive and aircraft industries and as a high temperature heat-transfer medium. It is also used in the manufacture of synthetic rubbers and rubber chemicals. Due to its anti-corrosion properties, Sodium Nitrite solution is also used as a heat transfer fluid in Thermal Energy Storage units for large air-conditioning or process cooling applications.

Sodium Nitrite Technical Solution is a sodium nitrite/nitrate solution with a relatively high concentration of sodium nitrate. This high nitrate content allows to be used to control odours and corrosion caused by hydrogen sulphide (H2S) in wastewater systems. It also has applications as a low temperature thermal fluid in large industrial chiller and stratified thermal storage systems. controls H2S throughout a system from relatively few feed points by providing a food source which is consumed in a preferred metabolic pathway by bacteria over the reduction of sulphur, hence eliminating the formation of H2S.

What is sodium nitrite?
Sodium nitrite is a salt and an antioxidant that is used to cure meats like ham, bacon and hot dogs. Nitrite serves a vital public health function: it blocks the growth of botulism-causing bacteria and prevents spoilage. Nitrite also gives cured meats their characteristic color and flavor. In addition,United States Department of Agriculture (USDA)-sponsored research indicates that nitrite can help prevent the growth of Listeria monocytogenes, an environmental bacterium that can cause illness in some at-risk populations.

Sodium Nitrite is soluble in water and readily forms colorless hexagonal crystals. It is a strong oxidizer but stable under ordinary conditions of use and storage. Noncombustible but accelerates the burning of combustible materials.

Nitrous acid (as sodium nitrite) is used as part of an intravenous mixture with sodium thiosulfate to treat cyanide poisoning. It is on the World Health Organization's List of Essential Medicines, a list of the most important medications needed in a basic health system. There is also research to investigate its applicability towards treatments for heart attacks, brain aneurysms, pulmonary hypertension in infants, and Pseudomonas aeruginosa infections.

Product description : sodium nitrite comes as white / yellow crystals with a faint odor, minimum 99% purity. It is easily soluble in water.

Uses : sodium nitrite is used as a surface treatment agent, as a corrosion inhibitor, in the metallurgical industry for heat treatments, but also as a heat transfer product on airport runways or for the manufacture of colorants and dyes in the textile industry.

Sodium nitrite (NaNO2) is a preserving agent. It is used in bacon, baloney, corned beef, hams, hot dog wieners, luncheon meats, salami and sausages as well as smoked and cured fishes.
It helps prevent food from going rancid, and controls bacteria which can cause botulism and kill you.
It also helps hold colour in preserved meats or fish. Some of the nitrites in it convert to nitric oxide, which interacts with myoglobin in meat, forming red nitric oxide myoglobin. This turns bright pink when the meat is smoked, giving preserved meat a pleasing pink colour.
It comes in white or yellowish powder or granules.

What Is Sodium Nitrite? What Are Nitrites?
Sodium nitrite is an ingredient frequently found in processed meats that acts as a preservative and protects against the growth of harmful bacteria. Other sodium nitrite uses include adding a salty flavor and boosting the reddish-pink color that’s characteristic to processed meats.

Nitrites are one of the primary ingredients in sodium nitrite. Nitrites are a chemical compound composed of one nitrogen atom with two atoms of oxygen. When you consume foods with nitrites, they can turn into nitric oxide, which plays an important role in health and disease. (1)

Unfortunately, nitrites can also turn into nitrosamines, which are harmful compounds that have been linked with many adverse effects on health. Nitrosamine formation takes place when nitrites are in the presence of amino acids and are exposed to high heat, which is why nitrite-rich processed meats are more likely to contain these disease-causing compounds.

Sodium nitrite is a white crystalline compound used to lower systemic blood pressure, to relieve local vasomotor spasms, to relax bronchial and intestinal spasms, and as an antidote for cyanide poisoning. It is the inorganic compound with the chemical formula NaNO2. It is a useful precursor to a variety of organic compounds, such as pharmaceuticals, dyes, and pesticides, but it is probably best known as a food additive to prevent botulism.

Sodium nitrite has the characteristics of reduction and oxidation and is mainly oxidation. Chemical formula is NaNO2, in which N has a valency is + III. It is colorless or yellow crystal, the relative density is 2.168 (0℃), the melting point is 271℃, and it is decomposed when 320℃. It is soluble in water, and aqueous solution is alkaline because of nitrate hydrolysis.

When using strong acidic sodium nitrite, it can be nitrited to nitric acid. Nitrite is very unstable, easily decomposed into nitrogen dioxide, nitric oxide and water. The nitrogen atoms and oxygen atoms all have a single pair of electrons, which can be used as ligands, and can be used as ligands to form complexes with many metal ions. Sodium nitrite is toxic, carcinogenic substances, using it must be attention.

What is Sodium Nitrite?
It is an organic nature with the formula of sodium. It is a crystalline powder that is water-soluble and hygroscopic. Industrial safety is the most important nitrite salt. It is the precursor of organisms such as pharmaceutical, dye and insecticide, it is a best food additive for use in other finishing meat and life.

Sodnitrite steals is a substance and overexposure can be fatal.

How is Sodium Nitrite produced?
The industrial production of sodium nitrite comes from one of two processes, such as reduction of nitrate salts or lower nitrogen oxidations.

An example of molten nitrate and oxidised lead is less scrap iron shavings for a modern model nitrate technique.

A more commonly used method involves the general reaction of nitrogens in alkaline aqueous solution with the addition of a ". It is believed that the exact conditions depend on which nitrogen oxides grow, and in an ideal school control school the path of the atom.

Sodium nitrite is also produced by reducing nitrate salts by exposure to heat, use, metals, usable, and exemplary reduction.

What does Sodium Nitrite look like?
Hygroscopic white to yellowish crystalline powder

What is Sodium Nitrite financing?
Molecular Formula: NaNO2

What formula is used for Sodium Nitrite?
Rubber Industry
Metallurgical applications
Industrial grease ingredients
cooling systems
Pharmaceuticals – cyanide poisoning
Food show, coloring, preservative

Sodium Nitrite fields (processes)?
The main use of sodium nitrite is in the production of organonitrogen enhancers. Amines are positive substances for diazo needs, which are the basis of many dyes, such as diazo dyes. Nitroso interior is produced from nitrites. Among them, toys are used.
It is used in various metallurgical applications for phosphating and detination.
Sodium nitrite is an effective corrosion inhibitor and is used as an ingredient in industrial greases.
Sodium nitrite as a solution as a method of cooling the temperature and as a molten transfer medium.
Sodium nitrite is an effective remedy for cyanide poisoning. It is used together with sodium thiosulfate. It is on the World Health Organization's list of Essential Medicines.
Sodium nitrite is used to accelerate the curing of meat and also to impart a pink color.
It is used for packaging, spoilage and microbial transmission for meat.
It ensures the freshness of the packaged preservation meat for a long time.
Nitrite has E250 Ena. Potassium nitrite (E249) is used in the same way.

Properties: Easily soluble in water, results in weak alkaline solutions. Preparation of solutions is accompanied by a decrease in temperature. Sodium nitrite dissolves in aqueous ammonia and various organic solvents (such as ethanediol, propanediol and methanol). Sodium nitrite can act as an oxidizing and reducing agent.

Iron-steel, Al and many other metals do not decompose with sodium nitrite and its solutions. The presence of chlorides and sulfates can promote corrosion of metals. Rubber, plastics, glass, porcelain and ceramics are resistant to sodium nitrite solutions. Treatment of sodium nitrite solutions with acids can produce nitric acid, which rapidly decomposes into nitro gases with a pale to dark brown color. In deisotization and nitrosation processes, nitric acid can react with other reactants before decomposing into nitrous oxide phases. It reacts with sodium nitrite, ammonium salts, amides and mixtures containing them at room temperature. This reaction can go as far as a violent explosion. Subsequently, exacerbation follows. Similar reactions can occur with rapidly oxidizing products such as sodium and potassium metabisulfite. Powdered with sodium nitrite, wool and cotton and other textile tissues are quickly flammable.

Applications: Used in tank rinsers for the production of azo dyes, production of diazo compounds, production of nitroso and isonitroso compounds, stabilization of nitric acid gases, transportation and storage of butadiene.

For textile dyeing and printing: Dyeing and printing diazotization; oxidation of printing and dyeing with colorless barrel dyes; protection against reduction during printing and dyeing with certain vat dyes; It is used to trigger accelerated oxidation of barrel paints that resist reoxidation.

Metalworking industry: accelerator during phosphating; in the preparation of baths for hot-worked metals; steel deposition and cast iron; as an additive to alkaline pickling baths of aluminum and aluminum alloys; It is used in neutral cleaner and deactivating baths.

Anti-corrosion agent: In water recovery systems, cooling water and cooling liquids (antifreezes); in crushing oils, hydraulic fluids, lubricants, extinguishers; in chemical processes; in the production of solid and liquid anti-corrosion agents; in the production of emulsion paints; antioxidant for special soaps; additive for glazing of glass raw materials; in water circulation systems; as an additive in concrete with special properties; as an anti-corrosion agent for steel and iron; It is used in the production of products used to protect oil fuel tanks from corrosion.

Sodium nitrite is a component in heat transfer salts used by many branches of industry such as the chemical, petrochemical and metalworking industries.

It is also used for rinsing butadiene tanks.

Definition and Usage Areas:

Usage areas

· For textile dyeing and printing: Dyeing and printing diazotization; oxidation of printing and dyeing with colorless barrel dyes; protection against reduction during printing and dyeing with certain vat dyes; It is used to trigger accelerated oxidation of barrel paints that resist reoxidation.

accelerator during phosphating; in the preparation of baths for hot-worked metals; steel deposition and cast iron; as an additive to alkaline pickling baths of aluminum and aluminum alloys; It is used in neutral cleaner and deactivating baths.

· Water recovery systems, cooling water and cooling liquids (antifreezes); in crushing oils, hydraulic fluids, lubricants, extinguishers; in chemical processes; in the production of solid and liquid anti-corrosion agents; in the production of emulsion paints; antioxidant for special soaps; additive for glazing of glass raw materials; in water circulation systems; as an additive in concrete with special properties; as an anti-corrosion agent for steel and iron; It is used in the production of products used to protect oil fuel tanks from corrosion.

It is used as a preservative in foods. Inhibits bacterial growth and discoloration, generally

It is a white, slightly yellowish, fine crystal structure, highly soluble in water, hygroscopic chemical substance with the chemical formula of NaNO2. It is the sodium salt of nitric acid, used as a preservative in foods. Many analyzes have been made by researchers about its carcinogenic effect and no clear conclusion has been reached yet. In addition, studies have shown that sodium nitrite causes new vessel formation in the human body and studies on this subject are continuing.

Production and Reactions

It can be obtained by treating sodium hydroxide, nitrogen dioxide and nitric oxide.

Sodium nitrite can be reduced to destroy excess sodium products.
2 NaN3 + 2 NaNO2 + 2 H+ ? 3 N2 + 2 NO + 2 Na + 2 H2O
Sodium nitrite can turn into nitric acid by reacting with stomach acid.

Usage areas

Medicine
It is used as an antidote to treat cyanide poisoning.

food
This substance, which has the number E 250, is used as a preservative in the food industry. It also combines with the myoglobin in the meat and ensures the formation of the bright pink-red color specific to the processed meat and the preservation of this color.

Health
It is used to prevent the reproduction of Clostridium botulinum bacteria, which is very dangerous for human health.

Chemistry
It is used in laboratories to remove excess sodium products.