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Sodium chlorite 31% is a white crystalline solid that can accelerate the burning of organic substances.
Sodium chlorite 31% is widely used in various industries, including paper manufacturing, water purification, wood pulp bleaching, textiles, fats and oils, as a disinfectant, and in many other fields.
In organic synthesis, Sodium chlorite 31% is often used to convert aldehydes to carboxylic acids and alkyl furans to 4-oxo-2-alkenoic acids.
CAS: 7758-19-2
MF: ClNaO2
MW: 90.44
EINECS: 231-836-6
Synonyms
SodiuM chlorite, unstabilized, pure, 80% 500GR;Scentrex? DTS 1.05 sachet;Sodium chlorite puriss. p.a., 80% (RT);Sodium chlorite technical grade, 80%;Sodium chlorite, technical, 80%;Sodium chlorite, Unstabilized;Sodium Chlorite, Anhydrous;textile
Moreover, when combined with an acid such as citric acid, acidified Sodium chlorite 31% can be used to sanitize surfaces and rinse a variety of foods.
In the military, Sodium chlorite 31% can be used to combat contaminants such as harmless microbes and food pathogens.
Sodium chlorite 31% is an inorganic sodium salt in which chlorite is the counterion.
Sodium chlorite 31% has a role as an oxidising agent.
Sodium chlorite 31% is an inorganic sodium salt and a chlorite salt.
Sodium chlorite 31% appears as a white crystalline solid.
Difficult to burn, but accelerates the burning of organic substances.
Forms explosive mixtures with certain combustible materials.
May explode under prolonged exposure to heat or fire.
Used in water purification, to bleach wood pulp, textile, fats, oils; and for many other uses.
Sodium chlorite 31% is a white crystalline solid, being able to accelerate the burning of organic substances.
Sodium chlorite 31% is used in paper manufacture, water purification bleaching wood pulp, textile, fats, and oils, as a disinfectant and in many other fields.
Sodium chlorite 31% is a chemical compound used in the manufacturing of paper and as a disinfectant.
Sodium chlorite 31% is a chemical compound with the molecular formula NaClO2.
Sodium chlorite 31% can be used as an antimicrobial agent in wastewater treatment and as a reactive agent in analytical chemistry.
Sodium chlorite 31% is a strong oxidizing agent that reacts with other compounds to release chlorine atoms.
Sodium chlorite 31% has been shown to have carcinogenic potential, but it has also been shown to have antibacterial efficacy against Escherichia coli and Bacillus subtilis.
The surface methodology of sodium chlorite was studied using thermodynamic data from laser ablation and plasma mass spectrometry.
Sodium chlorite 31% Chemical Properties
Melting point: 190 °C (dec.)
Boiling point: ≥100°C/1013hPa
Density: 2.5 g/cm3
Vapor pressure: 0Pa at 25℃
Storage temp.: 2-30°C
Solubility: Methanol (Slightly), Water (Slightly)
Form: Powder
Color: White
Odor: odorless
PH Range: 10 - 11
PH: 12-13 (20°C in H2O)
Explosive limit: 7%
Water Solubility: 39 g/100 mL (17 ºC)
Sensitive: Hygroscopic
Merck: 14,8600
Dielectric constant: 6.1（Ambient）
Stability: Stable. Incompatible with phosphorus, sulphur, zinc, ammonia, finely powdered metals, strong reducing agents, acids, organic materials.
LogP: -2.7 at 25℃
CAS DataBase Reference: 7758-19-2(CAS DataBase Reference)
IARC: 3 (Vol. 52) 1991
EPA Substance Registry System: Sodium chlorite (7758-19-2)
Sodium chlorite 31% is a white crystalline powder or flakes that is readily soluble in water.
Sodium chlorite 31% is slightly hygroscopic.
Uses
Sodium chlorite 31% is a kind of efficient bleacher and bactericide.
Sodium chlorite 31% is used to bleach various fibers including cotton, linen, mulberry, reed, viscose fiber and so on.
Additionally, Sodium chlorite 31% can bleach sugar, flour, starch, ointment, wax, oil, and more.
Sodium chlorite 31% also serves as a leather depilator, a surface treatment for certain metals, and a water and sewage treatment solution.
Sodium chlorite 31% can even purify trace amounts of nitric oxide in coke oven gas.
Sodium chlorite 31% is used in the in situ generation of chlorine dioxide for stripping of textiles, bleaching, pulp and paper industries.
Sodium chlorite 31% acts as a disinfectant in water treatment plant and as a preservative in eye drops.
Sodium chlorite 31% is also used in contact lens cleaning solution and for sanitizing air ducts.
Sodium chlorite 31% is associated with zinc chloride and used as a component in therapeutic rinses, toothpastes, mouth sprays and gels.
Sodium chlorite 31% is utilized for the synthesis of 4-oxo-2-alkenoic acids from alkyl furans.
Further, Sodium chlorite 31% is involved as a reagent in Pinnick oxidation reaction to prepare carboxylic acid from aldehydes.
Sodium chlorite 31% may be used in the synthesis of chlorine dioxide and as a hydroxylating agent for the hydroxylation of androstenedione (steroid).
The main application of Sodium chlorite 31% is the generation of chlorine dioxide for bleaching and stripping of textiles, pulp, and paper.
Sodium chlorite 31% is also used for disinfection of municipal water treatment plants after conversion to chlorine dioxide.
An advantage in this application, as compared to the more commonly used chlorine, is that trihalomethanes (such as chloroform) are not produced from organic contaminants.
Chlorine dioxide generated from sodium chlorite is approved by FDA under some conditions for disinfecting water used to wash fruits, vegetables, and poultry.
Sodium chlorite 31%, NaClO2, sometimes in combination with zinc chloride, also finds application as a component in therapeutic rinses, mouthwashes, toothpastes and gels, mouth sprays, as preservative in eye drops, and in contact lens cleaning solution under the trade name Purite.
Sodium chlorite 31% is also used for sanitizing air ducts and HVAC/R systems and animal containment areas (walls, floors, and other surfaces).
Chemical reagent
In organic synthesis, Sodium chlorite 31% is frequently used as a reagent in the Pinnick oxidation for the oxidation of aldehydes to carboxylic acids.
The reaction is usually performed in monosodium phosphate buffered solution in the presence of a chlorine scavenger (usually 2-methyl-2-butene).
In 2005, Sodium chlorite 31% was used as an oxidizing agent to convert alkyl furans to the corresponding 4-oxo-2-alkenoic acids in a simple one pot synthesis.
Acidified sodium chlorite
Mixing Sodium chlorite 31% solution with a weak food-grade acid solution (commonly citric acid), both stable, produces short-lived acidified sodium chlorite (ASC) which has potent decontaminating properties.
Upon mixing the main active ingredient, chlorous acid is produced in equilibrium with chlorite anion.
The proportion varies with pH, temperature, and other factors, ranging from approximately 5–35% chlorous acid with 65–95% chlorite; more acidic solutions result in a higher proportion of chlorous acid.
Chlorous acid breaks down to chlorine dioxide which in turn breaks down to chlorite anion and ultimately chloride anion.
Sodium chlorite 31% is used for sanitation of the hard surfaces which come in contact with food and as a wash or rinse for a variety of foods including red meat, poultry, seafood, fruits and vegetables.
Because the oxo-chlorine compounds are unstable when properly prepared, there should be no measurable residue on food if treated appropriately.
Sodium chlorite 31% also is used as a teat dip for control of mastitis in dairy cattle.
Use in public crises
The U.S. Army Natick Soldier Research, Development, and Engineering Center produced a portable "no power required" method of generating chlorine dioxide gas (ClO2), a compound described as being one of the best biocides available for combating contaminants ranging from benign microbes and food pathogens to Category A Bioterror agents.
In the weeks after the 9/11 attacks when anthrax was sent in letters to public officials, hazardous materials teams used ClO2 to decontaminate the Hart Senate Office Building, and the Brentwood Postal Facility.
In addressing the COVID-19 pandemic, the U.S. Environmental Protection Agency has posted a list of many disinfectants that meet its criteria for use in environmental measures against the causative coronavirus.
Some are based on sodium chlorite that is activated into chlorine dioxide, though differing formulations are used in each product.
Many other products on the EPA list contain sodium hypochlorite, which is similar in name but should not be confused with sodium chlorite because they have very different modes of chemical action.
Agricultural Uses
Sodium chlorite 31% is a group of greenish clay minerals of variable composition (similar to mica in structure), which crystallizes in the monoclinic system.
The term Sodium chlorite 31% is derived from 'chloros', the Greek word for green.
Sodium chlorite 31% is composed of complex silicates of aluminum, magnesium and iron in combination with water.
These are often called 2:2 type clays because they are similar to the unit lattice of vermiculite.
But strictly speaking, they are 2:1:1 type clays.
A layer of chlorite has 2 silicate tetrahedral units, one alumina octahedral unit and one magnesium octahedral sheet.
Sodium chlorite 31% has a low cation exchange capacity.
Chlorites are most commonly found in low-grade metamorphic rocks.
They also occur as secondary minerals in igneous rocks as alteration products of pyroxenes, amphiboles and micas.
Sodium chlorite 31% are infrequent in soils and when present, make up a small fraction of clay minerals.
Sodium chlorite 31% are primary minerals and form vermiculites and smectites.
Sodium chlorite 31% do not swell on wetting.
Manufacture
The free acid, chlorous acid, HClO2, is only stable at low concentrations.
Since Sodium chlorite 31% cannot be concentrated, it is not a commercial product.
However, the corresponding sodium salt, Sodium chlorite 31%, NaClO2 is stable and inexpensive enough to be commercially available.
The corresponding salts of heavy metals (Ag+, Hg+, Tl+, Pb2+, and also Cu2+ and NH4+) decompose explosively with heat or shock.
Sodium chlorite 31% is derived indirectly from sodium chlorate, NaClO3.
First, sodium chlorate is reduced to chlorine dioxide, typically in a strong acid solution using reducing agents such as sodium sulfite, sulfur dioxide, or hydrochloric acid.
This intermediate is then absorbed into a solution of aqueous sodium hydroxide where another reducing agent converts it to Sodium chlorite 31%.
Even hydrogen peroxide can be used as the reducing agent, giving oxygen gas as its byproduct rather than other inorganic salts or materials that could contaminate the desired product.
