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SODIUM ALUMINATE

CAS No. : 1302-42-7

Sodium aluminate is an inorganic chemical substance. The formula of the chemical component is NaAIO2. Overview The powder is white in color. Sodium aluminate, an odorless structure, is also known as aluminum. Sodium aluminate provides solution of caustic soda with aluminum hydroxide and boiling of this solution.

SODIUM ALUMINATE

CAS No. : 1302-42-7
EC No. : 215-100-1

Synonyms:
SODIUM ALUMINATE; sodium aluminate; sodıum alumınate; sodıum aluminate; sodyum alüminat; sodyumalüminat; Sodyum aluminat; sodyumaluminat ; Sodium aluminum oxide; beta-Alumina; Dynaflock L; Monofrax H; Alumina-C; Sodium polyaluminate; ALUMINUM SODIUM OXIDE; Maxifloc 8010; Nalco 680; Sodium metaaluminate; VSA 45; 11138-49-1; Sodium aluminate solution; EINECS 234-391-6; UN1819; UN2812; J 242; Torganit; sodiumaluminate; Sodium aluminum oxide (NaAlO2); Aluminate, sodium; sodium dioxoalumanuide; Sodium aluminium oxide; AlO2.Na; Sodium aluminum dioxide; Sodium aluminate, solid; Aluminium sodium dioxide; Na/Al2O3; Sodium aluminate, solution; EC 234-391-6; AC1Q1VU5; Sodium aluminate (NaAlO2); Sodium aluminate (Na2Al2O4); Sodium metaaluminate (NaAlO2); AC1L24I9; Aluminate, (AlO21-), sodium; Aluminum sodium oxide (Al2Na2O4); Sodium aluminate, technical 100g; EINECS 215-100-1; 5478AF; MFCD00085355; LS-16501; EC 215-100-1; Sodium aluminate, solid [UN2812] [Corrosive]; Sodium aluminate, solid [UN2812] [Corrosive]; Sodium aluminate, solution [UN1819] [Corrosive]; Sodium aluminate, solution [UN1819] [Corrosive]; I14-106364; 11108-58-0; 11137-64-7; 1228935-67-8; 12393-50-9; 12598-12-8; 157482-60-5; 162264-71-3; 180395-80-6; 7758-17-0; Aluminum sodium oxide; Sodium aluminum oxide; Aluminum sodium oxide Sodium aluminum oxide; SODIUM ALUMINATE; Sodium metaaluminate; SODIUM ALUMINATE; Sodium aluminum oxide; beta-Alumina; ALUMINUM SODIUM OXIDE; Dynaflock L; Monofrax H; Alumina-C; Sodium polyaluminate; Maxifloc 8010; Nalco 680; 11138-49-1; Sodium metaaluminate; VSA 45; Sodium aluminate solution; EINECS 234-391-6; UN1819; UN2812; J 242; Torganit; Sodium aluminum oxide (NaAlO2); Aluminate, sodium; sodium dioxoalumanuide; Sodium aluminium oxide; AlO2.Na; Sodium aluminum dioxide; Sodium aluminate, solid; Aluminium sodium dioxide; Na/Al2O3; Sodium aluminate, solution; EC 234-391-6; AC1Q1VU5; Sodium aluminate (NaAlO2); Sodium aluminate (Na2Al2O4); Sodium metaaluminate (NaAlO2); AC1L24I9; Aluminate, (AlO21-), sodium; EINECS 215-100-1; 5478AF; MFCD0008535; LS-16501; EC 215-100-1; Sodium aluminate, solid [UN2812]; Sodium aluminate, solid [UN2812]; Sodium aluminate, solution [UN1819]; Sodium aluminate, solution [UN1819]; I14-106364; Sodium aluminium oxide; Sodium metaaluminate; Aluminate, ((AlO2)1-), sodium; BETA ALUMINA; aluminum sodium oxide; sodium aluminum oxide; aluminum sodium oxide sodium aluminum oxide; sodium aluminate; sodium metaaluminate; sodium aluminate; sodium aluminum oxide; beta-alumina; aluminum sodium oxide; dynaflock l; monofrax h; alumina-c; sodium polyaluminate; maxifloc 8010; nalco 680; 11138-49-1; sodium metaaluminate; vsa 45; sodium aluminate solution; einecs 234-391-6; un1819; un2812; j 242; torganit; sodium aluminum oxide (naalo2); aluminate, sodium; sodium dioxoalumanuide; sodium aluminium oxide; alo2.na; sodium aluminum dioxide; sodium aluminate, solid; aluminium sodium dioxide; na/al2o3; sodium aluminate, solution; ec 234-391-6; ac1q1vu5; sodium aluminate (naalo2); sodium aluminate (na2al2o4); sodium metaaluminate (naalo2); ac1l24i9; aluminate, (alo21-), sodium; sodium aluminate, solid [un2812]; sodium aluminate, solution [un1819]; sodium aluminate, solution [un1819]; i14-106364; sodium aluminium oxide; sodium metaaluminate; aluminate, ((alo2)1-), sodium; beta alumina; beta-alumina; dynaflock l; j 242; maxifloc 8010; monofrax h; na 150; na 170; nalco 680; sodium aluminate; sodium aluminate solution; sodium aluminate solution (45% or less); sodium aluminate, solution; sodium aluminum oxide; sodium beta alumina; sodium beta''-alumina; sodium beta-alumina; sodium polyaluminate; vsa 45; aluminum sodium oxide; sodium oxido-oxo-alumane; sodium aluminum oxide; sodium aluminate anhydrous; 11138-49-1; aluminium sodium dioxide; 234-391-6; SODIUM ALÜMİNYUM; Sodyum aluminat; sodyumaluminat; Sodyum alüminyum oksit; beta-Alümina; Dynaflock L; Monofrax H; Alümina-C; Sodyum polyalüminat; ALÜMİNYUM SODYUM OKSİT; Maxifloc 8010; Nalco 680; Sodyum alüminat çözeltisi; EINECS 234-391-6; UN1819; UN2812; J 242; Torganit; sodyumalüminat; Sodyum alüminyum oksit (NaAlO2); Alüminat, sodyum; sodyum dioksoalumanuid; Sodyum alüminyum oksit; AlO2.Na; Sodyum alüminyum dioksit sodyum Sodyum; alüminat, katı; Alüminyum sodyum dioksit; Na / Al203; Sodyum alüminat, çözelti; EC 234-391-6; AC1Q1VU5; Sodyum alüminat (NaAlO2); Sodyum alüminat (Na2Al2O4); Sodyum metaalüminat (NaAl02); -), sodyum; Sodyum alüminat, katı [UN2812] [Aşındırıcı]; Sodyum alüminat, katı [UN2812] [Aşındırıcı]; Sodyum alüminat, çözelti [UN1819] [Aşındırıcı]; Sodyum alüminat, s olution [UN1819] [Corrosive]; I14-106364; 11108-58-0; 11137-64-7; 1228935-67-8; 12393-50-9; 12598-12-8; 157482-60-5; 162264- 71-3; 180395-80-6; 7758-17-0; Alüminyum sodyum oksit; Sodyum alüminyum oksit; Alüminyum sodyum oksit Sodyum alüminyum oksit; SODYUM ALÜMİNYUM; Sodyum metaalüminat; SODYUM ALÜMİNYUM; Sodyum alüminyum oksit; Beta-alüminyum oksit; ALÜMİNYUM SODYUM OKSİT; Dynaflock L; Monofrax H; Alümina-° C; Sodyum polyalüminat; Maxifloc 8010; Nalco 680; 11138-49-1; Sodyum metaalüminat; VSA 45; Sodyum alüminat çözeltisi; Torganit; Sodyum alüminyum oksit (NaAlO2); Alüminat, sodyum; sodyum dioksoalumanuid; Sodyum alüminyum oksit; AlO2.Na; Sodyum alüminyum dioksit; Sodyum alüminat, katı; Alüminyum sodyum dioksit; Na / AI2O3; Sodyum alüminat, çözelti; EC 234-391-6; AC1Q1VU5; Sodyum alüminat (NaAlO2); Sodyum alüminat (Na2Al2O4); Sodyum metaalüminat (NaAlO2); AC1L24I9; Alüminat, (AlO21-), sodyum; DTXSID3051206; HSDB 5023; IYJYQHRNMMNLRH-UHFFFAOYSA = N; Alüminyum sodyum oksit (Al2Na2O4); sodyumalüminat; sodyum alüminyum oksit (naalo2); alüminat, sodyum; sodyum dioksoalumanuid; sodyum aluminyum oksit; alüminat, katı; alüminyum sodyum dioksit; na / al203; sodyum alüminat, çözelti; ec 234-391-6; ac1qlv5; sodyum alüminat (naalo2); sodyum alüminat (na2al204); -), sodyum; dtxsid3051206; hsdb 5023; iyjyqhrnmmnlrh-ufffaoysa-n; alüminyum sodyum oksit (al2na204); sodyum alüminat, teknik 100g; einec 215-100-1; 5478af; mfcd00085355; sodyum alüminat, katı [aşındırıcı], sodyum alüminat, katı [aşındırıcı], sodyum alüminat, çözelti [aşındırıcı]; sodyum alüminat, s olution [aşındırıcı]; alüminyum sodyum oksit; sodyum alüminyum oksit; alüminyum sodyum oksit sodyum alüminyum oksit; sodyum alüminat; sodyum metaalüminat; sodyum alüminat; sodyum alüminyum oksit; Beta-alüminyum oksit; alüminyum sodyum oksit; dynaflock l; monofrax h; alümina-c; sodyum polyalüminat; maxifloc 8010; nalco 680; 11138-49-1; sodyum metaalüminat; vsa 45; sodyum alüminat çözeltisi; einec 234-391-6; un1819; un2812; j 242; torganit; sodyum alüminyum oksit (naalo2); alüminat, sodyum; sodyum dioksoalumanuid; sodyum alüminyum oksit; alo2.na; sodyum alüminyum dioksit; sodyum alüminat, katı; alüminyum sodyum dioksit; Na / Al2O3; sodyum alüminat, çözelti; ec 234-391-6; ac1q1vu5; sodyum alüminat (naalo2); sodyum alüminat (na2al204); sodyum metaalüminat (naalo2); ac1l24i9; alüminat, (alo21-), sodyum; alüminyum sodyum oksit (al2na204); einec 215-100-1; 5478af; mfcd0008535; LS-16501; ec 215-100-1; sodyum alüminat, katı [2828]; sodyum alüminat, katı [2828]; sodyum alüminat, çözelti [1819]; sodyum alüminat, çözelti [1819]; i14-106364; sodyum alüminyum oksit; sodyum metaalüminat; alüminat, ((alo2) 1), sodyum; beta alümina; Beta-alüminyum oksit; dynaflock l; j 242; maxifloc 8010; monofrax h; na 150; na 170; nalco 680; sodyum alüminat; sodyum alüminat çözeltisi; sodyum alüminat çözeltisi (% 45 veya daha az); sodyum alüminat, çözelti; sodyum alüminyum oksit; sodyum beta alümina; sodyum beta '' - alümina; sodyum beta-alümina; sodyum polyalüminat; vsa 45; alüminyum sodyum oksit; sodyum oksido-okso-alüman; sodyum alüminyum oksit; sodyum alüminat susuz; 11138-49-1; alüminyum sodyum dioksit; 234-391-6
 

SODIUM ALUMINATE

Sodium aluminate is an inorganic chemical substance. The formula of the chemical component is NaAIO2. Overview The powder is white in color. Sodium aluminate, an odorless structure, is also known as aluminum. Sodium aluminate provides solution of caustic soda with aluminum hydroxide and boiling of this solution. Sodium aluminate is an inorganic chemical that is used as an effective source of aluminium hydroxide for many industrial and technical applications. Pure sodium aluminate (anhydrous) is a white crystalline solid having a formula variously given as NaAlO2, NaAl(OH)4 (hydrated),[2] Na2O·Al2O3, or Na2Al2O4. Commercial sodium aluminate is available as a solution or a solid. Other related compounds, sometimes called sodium aluminate, prepared by reaction of Na2O and Al2O3 are Na5AlO4 which contains discrete AlO45- anions, Na7Al3O8 and Na17Al5O16 which contain complex polymeric anions, and NaAl11O17, once mistakenly believed to be β-alumina, a phase of aluminium oxide. Sodium Aluminate is generally immediately available in most volumes. Aluminates are compounds with a negatively-charged alumina ion and a metallic oxide with various industrial applications such as water treatment and ceramics manufacturing. In December 2012, a team of researchers created a unique type of highly-reflective pigment composed of rare earth-doped cobalt aluminate that may have potential use as an energy-efficient exterior coating. 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. Sodium Aluminate is most widely used in municipal drinking water and waste water treatment systems. As an alkali, Sodium Aluminate can work in applications where the addition of caustic is not desirable. It provides an economical source of highly reactive alumina. Liquid sodium aluminate (LSA) is becoming an increasingly popular choice for the removal of phosphorus in municipal and industrial wastewater plants. As discharge limits for nitrogen and phosphorus become more stringent, many plants are implementing both biological and chemical treatment systems for their reduction. However, both these treatment processes can deplete the available alkalinity and depress effluent pH below discharge limits.

Sodium Aluminate Solutions Specs
The manufacturing process utilizes only the finest available raw materials in the production of Sodium Aluminate Solutions, in which alumina tri-hydrate (ATH) is dissolved into sodium hydroxide and water. Proprietary stabilization techniques may also be used to prevent alumina from precipitating. Sodium Aluminate Solutions are strongly alkaline products that are available in three strengths:

Molecular Weight: 81.97 g/mol
Chemical formula: NaAlO2
Appearance: white powder (sometimes light-yellowish)
hygroscopic/ when dissolved in water a colloidal black solution is formed
Odor: odorless
Density: 1.5 g/cm3
Melting point: 1,650 °C (3,000 °F; 1,920 K)
Specific Gravity: 1.55 at 77 ° F (USCG, 1999)
Boiling Point: 239 ° F at 760 mm Hg
Solubility in water: highly soluble
Solubility: Insoluble in alcohol[1]
Refractive index (nD): 1.566
Hydrogen Bond Donor Count: 0
Hydrogen Bond Acceptor Count: 3
Rotatable Bond Count: 0
Exact Mass: 81.961137 g/mol
Monoisotopic Mass: 81.961137 g/mol
Topological Polar Surface Area: 34.1 A^2
Heavy Atom Count: 4
Formal Charge: 0
Complexity: 18.3
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 2
STRUCTURE OF SODIUM ALUMINATE
Anhydrous sodium aluminate, NaAlO2, contains a three-dimensional framework of corner linked AlO4 tetrahedra. The hydrated form NaAlO2·5/4H2O has layers of AlO4 tetrahedra joined into rings and the layers are held together by sodium ions and water molecules that hydrogen bond to O atoms in the AlO4 tetrahedra.[4]
MANUFACTURING OF SODIUM ALUMINATE
Sodium aluminate is manufactured by the dissolution of- aluminium hydroxide in a caustic soda (NaOH) solution. Aluminium hydroxide (gibbsite) can be dissolved in 20-25% aqueous NaOH solution at a temperature near the boiling point. The use of more concentrated NaOH solutions leads to a semi-solid product. The process must be carried out in steam-heated vessels of nickel or steel, and the aluminium hydroxide should be boiled with approximately 50% aqueous caustic soda until a pulp forms. The final mixture has to be poured into a tank and cooled; a solid mass containing about 70% NaAlO2 then forms. After being crushed, this product is dehydrated in a rotary oven. The resulting product contains 90% NaAlO2 and 1% water, together with 1% free NaOH.
Reaction of aluminium metal and alkali
Sodium aluminate is also formed by the action of sodium hydroxide on elemental aluminium which is an amphoteric metal. The reaction is highly exothermic once established and is accompanied by the rapid evolution of hydrogen gas. The reaction is sometimes written as:
2 Al + 2 NaOH + 2 H2O → 2 NaAlO2 + 3 H2
however the species produced in solution is likely to contain the [Al(OH)4]- ion or perhaps the [Al(H2O)2(OH)4]- ion.[5].This reaction has been proposed as a potential source of fuel for hydrogen powered cars.
 
SODIUM ALUMINATE IN USAGE AREAS
In water treatment it is used as an adjunct to water softening systems, as a coagulant aid to improve flocculation, and for removing dissolved silica and phosphates.
In construction technology, sodium aluminate is employed to accelerate the solidification of concrete, mainly when working during frost.
Sodium aluminate is also used in the paper industry, for fire brick production, alumina production and so forth.
Sodium aluminate solutions are intermediates in the production of zeolites.
Sodium aluminate is a technology product. Sodium aluminate can be added to the mortar mixture to provide faster cooling of the spilled concrete. I also prefer paper and fire resistance. Other uses and forms of use of sodium aluminate are as follows; 
Sodium aluminate is a substance used for a long time. In this regard, it is preferred to be used in all sector branches. The automotive industry is an important cleaning material. Used to clean parts such as piston, cylinder head, valve and turbine blades. Metal work, coating or welding prepared. Used for cleaning old stains or rust. It is used to clean and brighten the matted parts of the metal.
Installation for installation in pipelines, glass decoration works, cleaning of metal surfaces, cleaning of metal molds, cleaning of materials cutting materials such as marble and granite, ceramic.
SODIUM ALUMINATE HARM
Sodium aluminate is among the non-harmful substances of any effect on human health. Although it does not cause harm with other substances it contains, it can be seen if the similarities of the problems arising in aluminum matter are slightly exposed when exposed directly. These; It may cause dizziness when the gas is in the air that may come into contact with other substances. If it comes in contact with the eye it may cause eye irritation. In such a case, the eye should thoroughly wash under constantly flowing water. When touching the skin directly, it causes irritation and slight burning in sensitive areas. Ingestion or contact with mouth may cause stomach ache. If you are exposed to such conditions, you should consult a doctor. It is also necessary to act carefully in the presence of sodium aluminate. Sodium aluminate is an important commercial inorganic chemical. Aluminum hydroxide is an important and accepted source of production. The pure anhydrous sodium aluminate is in the form of a white crystal and the molecular formula is NaAlO2, NaAl (OH) 4 (hydrate), [1] Na2O.Al2O3, or Na2Al2O4. The commercial sodium aluminate may be present in powdered or reconstituted form. The reaction of compound Na2O and Al2O3 at 1200 ° C occurs as the result.
USE OF SODIUM ALUMINATE
It is used as auxiliary coagulant to increase flocculation in helping to soften water in water pollution, and to be used for dissolved silica and phosphate.
It is used in construction sector to make concrete harden faster.
Sodium aluminate is also used in the paper industry as a paper chemistry, in the production of fire bricks, in the production of alumina and similar materials.
Sodium aluminate solution is used for zeolite production.

HAZARDS IDENTIFICATION OF SODIUM ALUMINATE
GHS Classification
GHS Hazard Statements
Aggregated GHS information provided by 313 companies from 16 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Reported as not meeting GHS hazard criteria by 2 of 313 companies. 
Of the 15 notification(s) provided by 311 of 313 companies with hazard statement code(s):
H290 (62.38%): May be corrosive to metals [Warning Corrosive to Metals]
H314 (98.71%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
H318 (77.49%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown.
Health Hazard
Material is caustic. Irritates skin, eyes, and gastrointestinal tract, causing redness of skin and eyes, burning sensation of mucous membranes.
Fire Hazard
Behavior in Fire: Containers may burst when exposed to heat. Not combustible.
Skin, Eye, and Respiratory Irritations
STRONG IRRITANT TO TISSUE.
/Aluminum powder/ may cause minor irritation to lungs & eyes. /Aluminum powder, uncoated/
Safety and Hazard Properties
Chemical Dangers
The solution in water is a strong base. It reacts violently with acid and is corrosive to aluminium, tin and zinc. Reacts with ammonium salts. This generates fire hazard.
FIRST AID MEASURES
First Aid
Get medical attention. EYES: Flush with water for 15 min., lifting lids occasionally. SKIN: Remove contaminated clothing and shoes. Flush with water and neutralize with weak vinegar. INGESTION: Dilute by drinking water or milk. Neutralize by drinking fruit juice. Do not induce vomiting.
Inhalation First Aid : Fresh air, rest. Refer for medical attention.
Skin First Aid: Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .
Eye First Aid: First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion First Aid: Rinse mouth. Do NOT induce vomiting. Refer for medical attention .
Fire Fighting Measures
Fire Fighting
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: SMALL FIRE: Dry chemical, CO2 or water spray. LARGE FIRE: Dry chemical, CO2, alcohol-resistant foam or water spray. Move containers from fire area if you can do it without risk. Dike fire-control water for later disposal; do not scatter the material. FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. 
In case of fire in the surroundings, use appropriate extinguishing media.
Accidental Release Measures
Isolation and Evacuation
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)
Spillage Disposal
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. Wash away remainder with plenty of water.
Cleanup Methods
AQ WASTE SOLUTIONS CONTAINING SODIUM ALUMINATE ARE ACIDIFIED WITH SULFURIC ACID & TREATED WITH A WEAKLY BASIC CMPD (PH 7-11) TO IMPROVE PPT & FILTERABILITY OF ALUMINUM CMPD.
Other Preventative Measures
SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.

HANDLING AND STORAGE
Nonfire Spill Response
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2016)
Safe Storage
Separated from food and feedstuffs and acids. Dry.
Exposure Control and Personal Protection
Threshold Limit Values
8 hr Time Weighted Avg (TWA): 1 mg/cu m (Respirable fraction). /Aluminum metal and insoluble compounds/
Excursion Limit Recommendation: Excursions in worker exposure levels may exceed three times the TLV-TWA for no more than a total of 30 min during a work day, and under no circumstances should they exceed five times the TLV-TWA, provided that the TLV-TWA is not exceeded. /Aluminum metal and insoluble compounds/
A4: Not classifiable as a human carcinogen. /Aluminum metal and insoluble compounds/
Inhalation Risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.
Effects of Short Term Exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Medical observation is indicated.
Acceptable Daily Intakes
Recommended adult daily allowance for sodium at 1-2 g. /Sodium; from Table 1/
Exposure Prevention
AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! Inhalation Prevention
Use local exhaust or breathing protection. Skin Prevention
Protective gloves. Protective clothing. Eye Prevention
Wear safety goggles, face shield or eye protection in combination with breathing protection.; Ingestion Prevention
Do not eat, drink, or smoke during work.
Protective Equipment and Clothing; Full, impervious chemical protective clothing and gloves, goggles, and approved respirator. (USCG, 1999)
Stability and Reactivity; Air and Water Reactions
Sodium aluminate will dissolve in water and produce a strong corrosive alkaline solution. May generate heat when water is added.
Reactive Group; Bases, Strong; Water and Aqueous Solutions
REACTIVITY PROFILE
SODIUM ALUMINATE generates a strong base in water; reacts violently with acids and corrosive to metals. Not compatible with copper, tin, zinc, aluminum, acids, phosphorus, or chlorocarbons.

Sodium aluminate - BC, REG, Comp of boiler water additive - 173.310; GRAS, Migr to food from paper and paperboard prods - 182.90
Sodium aluminate normally contains an excess of sodium hydroxide or soda ash to maintain a sufficiently high pH to prevent aluminum hydroxide precipitation prior to its addition ... as a coagulant /in municipal water treatment/.
Sodium aluminate will dissolve in water and produce a strong corrosive alkaline solution. May generate heat when water is added.
Health: TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. /Sodium aluminate, solid; Sodium aluminate, solution/
TOXIC AND/OR CORROSIVE (NON-COMBUSTIBLE)/ Fire or Explosion: Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. /Sodium aluminate, solid; Sodium aluminate, solution/
Sodium aluminate is considered to be a highly corrosive substance, but no acute toxicity data appear to have been developed for this substance.
Albic and spodic soil horizons were sampled from old growth eastern white pine/mixed northern hardwoods sites in the Adirondacks, and an ochric soil horizon was sampled from the Appalachian Plateau of NY State. 9 Three horizon forest floo, 9 mineral soil (field moist equivalent of 12.0 oven dry albic, spodic, or ochric mineral soil) and 9 forest floor/mineral soil columns were leached with 60 ml of (a) 10 mM sodium aluminate (control), (b) 1.0 mM nitric acid in 10 mM sodium aluminate (pH 3), and (c) 1.0 mM sodium aluminate (pH 3) at the rate of 10 ml/h. The above procedure was repeated on each mineral soil without a forest floor, except leaching soln were 0.5 mM calcium nitrate or calcium sulfate, each in 10 mM sodium aluminate. Adding 2 and 0.5 cmol sub c (H+)/kg to forest floor and mineral soils, respectively, simulated snowmelt additions. Total aluminum concn in leachates from forest floor/albic or forest floor/ochric columns were greater than the sum of concn in leachates from the forest floor and mineral horizon when leached separately. This positive synergistic behavior of the forest floor-mineral horizon sequences was also observed in the forest floor-spodic horizon sequence when leached with control soln, but the synergism was negative for both labile and non-labile aluminum when leached with the acids. Sulfuric acid leached less aluminum from the spodic horizon than did nitric acid, regardless of the presence of a forest floor, but nitric acid, sulfuric acid , and control soln leached similar concn of aluminum from the albic and ochric horizons. The forest floor effects on the mineral soil leachates were attributed to effects of calcium, sulfate, nitrate, and dissolved organic C leached from the forest floor to the mineral horizon since forest floor removed nearly all added H+. 

Sodium aluminate was introduced to the paper industry over 40 years ago. Its acceptance as an excellent wet end additive grew extensively in Europe and the U.S. paper making operations. Sodium aluminate was found to be very effective when used in conjunction with other cationic sources, such as alum, to optimize and improve wet end paper machine operations.
Simply stated, sodium aluminate is an alkaline form of aluminum which has been dissolved in caustic. Aluminum, because of its amphoteric nature, can be easily dissolved either in an acid or alkaline medium. Aluminum dissolved in sulfuric acid forms aluminum sulfate, or alum, and aluminum dissolved in caustic forms sodium aluminate. Sodium aluminate possesses an anionically charged alumina particle.
Sodium aluminate performs two basic functions in the paper maker process. One of these is primarily a chemical function which is to furnish a portion of the alumina required for sizing. Second function is best considered a physical function of coagulation and retention. System conditions created by these two reactions and the reaction products are the basis for the benefits provided by sodium aluminate.
Other benefits from sodium aluminate usage are:
Improved strength and durability
Cleaner machine system
Reduced foam
Reduced corrosion
Sodium aluminate is a product obtained from the dissolution of aluminium hydroxide (gibbsite) in sodium hydroxide. IQE produces sodium aluminates in solution, in the form of a transparent liquid, within the ALNA series.
The products of the ALNA series are an excellent source of reactive alumina in alkaline solution and this is the main reason for its use as a raw material in many industrial processes.
A method for preparing sodium aluminate from basic aluminum sulfate (BAS) is presented.  The process consists of two steps.  In the first step, BAS was transformed into sodium dawsonite (NaAl∙(OH)2∙CO3) by treating BAS with sodium carbonate aqueous solution at various temperatures and times.  The best experimental conditions for preparing sodium dawsonite were established.  In the second step of this work, sodium aluminate was obtained by heating sodium dawsonite.  In this case, several samples of sodium dawsonite were heated at different temperatures in the range of 600-1100°C for 30 minutes.  Sodium dawsonite decomposed at 320°C with the evolution of carbon dioxide and water.  At 500°C, a pattern corresponding to a transition alumina was observed by X-ray diffraction.  The first traces of crystalline sodium aluminate could be detected in the solid heated at 800°C, whereas at 1000°C a mixture of sodium aluminate and alpha alumina was obtained. Thus, the scheme of phase evolution on progressive heating could be expressed as sodium dawsonite, amorphous, transition alumina (gamma/eta) and crystalline sodium aluminate.  By this method, crystalline sodium aluminate could be obtained under mild conditions by heating sodium dawsonite at 900°C for 30 minutes.

Introduction
Sodium aluminate is an important commercial inorganic chemical.  It has been used as an effective source of aluminium hydroxide for many applications.  Pure sodium aluminate (anhydrous) is a white crystalline solid having a formula variously given as NaAlO2, Na2O Al2O3, or Na2Al2O4.
The commercial importance of sodium aluminate is due to the versatility of its technological applications.  In water treatment systems it is used as an adjunct to water softening systems, as a coagulant to remove suspended solids and some metals (Cr, Ba, Cu), and for removing dissolved silica.  In construction technology, sodium aluminate is employed to accelerate the solidification of concrete, mainly when working during frosty periods [1-3].  It is also used in the paper industry, for refractory brick production and alumina production [4-5], etc.  Furthermore, it is used as an intermediate in the production of zeolites for detergents, molecular sieves, adsorbents and catalysts [6-8].
Several methods for preparing solid sodium aluminate have been developed.  In most methods, an aqueous sodium aluminate solution is prepared in a first step.  Then, the sodium aluminate solution is dried in order to obtain the solid phase.  A typical process for producing aqueous sodium aluminate is by dissolving aluminium hydroxides in a caustic soda solution [9].  In this case, a suspension of aluminum hydroxide with excess NaOH is prepared.  Then, the suspension is passed through heated reaction tubes and the resulting sodium aluminate solution is spray dried.  The product of this process is NaAlO2, NaAlO2∙1.5H2O or NaAlO2∙xH2O.  In another process, sodium aluminate is prepared by solid state reaction of sodium hydroxide and subdivided aluminum hydrate, at a temperature above the melting point of the caustic soda but below 600°C [10].  It has been reported that sodium aluminate could be recovered from sodium dawsonite found in association with oil shales [11].  In this case, sodium aluminate was obtained by the reaction of homogeneously mixed sodium oxide and aluminum oxide, which were generated during thermal decomposition of sodium dawsonite.
In the present work, the preparation of sodium aluminate was investigated using basic aluminum sulfate (BAS) as a precursor.  This latter compound was obtained by homogeneous precipitation of aluminum sulfate aqueous solution using ammonium bisulfite as a precipitant, as reported elsewhere [12].  In the next step of the process, the preparation of sodium dawsonite was investigated by treating BAS with sodium carbonate aqueous solution.  Finally, this latter compound was heated at different temperatures to determine the formation temperature of sodium aluminate.
Experimental Procedure
The basic aluminum sulfate used in this work was obtained by precipitation in homogeneous solution by heating an aqueous solution of aluminum sulfate and ammonium bisulfite.  This latter solution was obtained by passing sulfur dioxide through an ammonium hydroxide solution until a solution pH 4 was obtained.  The 1 M sodium carbonate solution was prepared from reactive grade sodium carbonate from J. T. Baker.
To determine the thermal decomposition process and the crystallization temperature of sodium aluminate, several one gram samples of sodium dawsonite were heated at different temperatures in the range of 500-1100°C, for 30 minutes.  After heating, the solids were characterized by X-ray diffractometry (XRD) and Fourier transform infrared (FTIR).
The FTIR spectra of the samples heated at 800°C, 900°C and 1100°C are shown in Figure 12.  In this case, sharp absorption peaks at 559 cm-1, 711 cm-1 and 883 cm-1 and the absorption peak corresponding to carbonate stretching band at 1450 cm-1 appear.  As the temperature raises, the intensity of the absorptions peaks at 559 cm-1, 711 cm-1 and 1100 cm-1 increase in intensity, indicating that crystalline sodium aluminate begins to form at 800°C.  Its important to notice  that the sample heated at 1100°C exhibits sharp absorption peaks at 456 cm-1, 594 cm-1 and 649 cm-1 corresponding to alpha alumina, which could be produced by thermal decomposition of sodium aluminate at high temperature as reported by Zvezdinskaya et al. [23].
Conclusion
Sodium aluminate was prepared by using basic aluminum sulfate as a raw material.  In the first step of the process, sodium dawsonite was obtained by treating basic aluminum sulfate with sodium carbonate aqueous solution at 60°C for 4 hours.  Higher heating temperatures gave rise to the formation of pseudoboehmite as well as sodium dawsonite in the sample.  The crystallization of sodium dawsonite in the solid occurred through the formation of an amorphous basic aluminum carbonate as an intermediate compound.  The dawsonite powder was formed by highly agglomerated acicular particles, whose size ranged from 0.1-0.2μm.  In order to obtain sodium aluminate, sodium dawsonite was heated at different temperatures for 30 minutes and the phase transformation sequence was determined.  Based on the XRD patterns of the solids obtained after heating sodium dawsonite at different temperatures, the phase sequence could be determined as sodium dawsonite, amorphous, transition alumina (gamma/eta) and crystalline sodium aluminate.  By this method, crystalline sodium aluminate could be obtained by heating sodium dawsonite at 900°C for 30 minutes.

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