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sodium bromate(CAS No. 7789-38-0)

sodium bromate NaBrO3 (cas 7789-38-0) Molecular Structure

7789-38-0 Structure

Identification and Related Records

【Name】
sodium bromate
【CAS Registry number】
7789-38-0
【Synonyms】
Neutralizer K-938
Sodium bromate(DOT)
sodium salt
Sodium oxolinate
Neutralizer K-140
Sodium bromate (NaBrO3)
Bromate de sodium
Sodium bromate [UN1494] [Oxidizer]
Bromic acid, sodium salt
Dyetone
BROMATE de SODIUM (FRENCH)
Sodium bromade
Sodium Bromide, Crude
Neutralizer K-126
Bromate de sodium [French]
【EINECS(EC#)】
232-160-4
【Molecular Formula】
NaBrO3 (Products with the same molecular formula)
【Molecular Weight】
150.89
【Inchi】
InChI=1/BrHO3.Na/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1
【Canonical SMILES】
[O-]Br(=O)=O.[Na+]
【MOL File】
7789-38-0.mol

Chemical and Physical Properties

【Appearance】
colorless or white solid odorless
【Density】
3.339
【Melting Point】
381℃
【Boiling Point】
1390 °C
【Vapour】
1 mm Hg ( 806 °C)
【Refractive Index】
1.594
【Flash Point】
无意义
【Water】
364 g/L (20℃)
【Solubilities】
364 g/L (20 °C) in water
【Color/Form】
Colorless cubic crystals
【Stability】
Stable. Oxidizer. Incompatible with finely powdered metals, alcohols, strong acids, strong reducing agents.
【Spectral properties】
Index of refraction: 1.594
【Computed Properties】
Molecular Weight:150.89197 [g/mol]
Molecular Formula:BrNaO3
H-Bond Donor:0
H-Bond Acceptor:3
Rotatable Bond Count:0
Exact Mass:149.892851
MonoIsotopic Mass:149.892851
Topological Polar Surface Area:57.2
Heavy Atom Count:5
Formal Charge:0
Complexity:49.8
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

Safety and Handling

【Hazard Codes】
Xi:Irritant
【Risk Statements】
R36/37;R9
【Safety Statements 】
S17;S26;S37/39
【HazardClass】
5.1
【Hazard Note】

Oxidising Agent/Harmful

【Safety】

Safety Information about Sodium bromate (CAS NO.7789-38-0):
The Hazard Codes: ?O,? Xn,Xi
The Risk Statements:?8-22-36/37/38-9
8:?Contact with combustible material may cause fire?
9:?Explosive when mixed with combustible material?
22:?Harmful if swallowed?
36/37/38:?Irritating to eyes, respiratory system and skin?
The Safety Statements:?17-26-36/37/39
17:?Keep away from combustible material?
26:?In case of contact with eyes, rinse immediately with plenty of water and seek medical advice??
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: UN 1494 5.1/PG 2
WGK Germany: 3
RTECS: VZ3150000
F: 3
Hazard Note: Oxidising Agent/Harmful
HazardClass: 5.1
PackingGroup: II
Poison by ingestion, intravenous, subcutaneous, and intraperitoneal routes. A powerful oxidizer. Violent reactions with Al, As, C, Cu, oil, F2, metal sulfides, organic matter, P, S. Mixtures with grease are shock-sensitive explosives at 120°C. When heated to decomposition it emits toxic fumes of Na2O and Br?. See also BROMATES.

【PackingGroup 】
II
【Skin, Eye, and Respiratory Irritations】
Irritating to eyes, respiratory system and skin.
【Cleanup Methods】
Cover with dry lime or soda ash, pick up, keep in a closed container, and hold for waste disposal. Ventilate area and wash spill site after material pickup is complete.
【Transport】
UN 1494 5.1/PG 2
【Fire Fighting Procedures】
99%) 6 pp. (October 16, 2006) Available from, as of August 3, 2008: http://www.sigmaaldrich.com/catalog/search/SearchResultsPage/Expand ] **PEER REVIEWED**">FIREFIGHTING. Protective Equipment: Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes. Specific Hazard(s): Contact with other material may cause fire.
99%) 6 pp. (October 16, 2006) Available from, as of August 3, 2008: http://www.sigmaaldrich.com/catalog/search/SearchResultsPage/Expand ] **PEER REVIEWED**">EXTINGUISHING MEDIA: Water spray.
If material on fire or involved in fire: Flood with water. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Evacuation: If fire becomes uncontrollable-consider evacuation of one-half (1/2) mile radius.
【Fire Potential】
It forms very flammable mixtures with combustible materials and this mixture may be explosive if the combustible material is very finely divided. The mixture can be ignited by friction. Prolonged exposure to fire or heat by the material may result in an explosion.
【Formulations/Preparations】
Article of commerce contains about 99% sodium bromate..
/Available as/ BP, Cosmetic, aqueous solution, and technical grades
Pure, min 99.5%, and Reagent, min 99.7%, grades available
Trade names: Dyetone, Neutralizer K-126, Neutralizer K-140, Neutralizer K-938 [DHHS/NTP;Toxicology Studies of Sodium Bromate (CAS No. 7789-38-0) in Genetically Modified (FVB Tg.AC Hemizygous) Mice (Dermal and Drinking Water Studies) and Carcinogenicity Studies of Sodium Bromate in Genetically Modified
... Permanent hair wave neutralizing solutions ... usually contain either 2% potassium bromate or 10% sodium bromate.
【DOT Emergency Guidelines】
/GUIDE 141: OXIDIZERS - TOXIC/ Fire or Explosion: These substances will accelerate burning when involved in a fire. May explode from heat or contamination. Some may burn rapidly. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.
/GUIDE 141: OXIDIZERS - TOXIC/ Health: Toxic by ingestion. Inhalation of dust is toxic. Fire may produce irritating, corrosive and/or toxic gases. Contact with substance may cause severe burns to skin and eyes. Runoff from fire control or dilution water may cause pollution.
/GUIDE 141: OXIDIZERS - TOXIC/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. Keep unauthorized personnel away. Stay upwind. Keep out of low areas. Ventilate closed spaces before entering.
/GUIDE 141: OXIDIZERS - TOXIC/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing will only provide limited protection.
/GUIDE 141: OXIDIZERS - TOXIC/ Evacuation: Large spill: Consider initial downwind evacuation for at least 100 meters (330 feet). 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.
/GUIDE 141: OXIDIZERS - TOXIC/ Fire: Small fires: Use water. Do not use dry chemicals or foams. CO2 or Halon may provide limited control. Large fires: Flood fire area with water from a distance. Move containers from fire area if you can do it without risk. Do not move cargo or vehicle if cargo has been exposed to heat. Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.
/GUIDE 141: OXIDIZERS - TOXIC/ Spill or Leak: Keep combustibles (wood, paper, oil, etc.) away from spilled material. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Small dry spills: With clean shovel place material into clean, dry container and cover loosely; move containers from spill area. Large spills: Dike far ahead of spill for later disposal.
/GUIDE 141: OXIDIZERS - TOXIC/ First Aid: Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. Contaminated clothing may be a fire risk when dry. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. Keep victim warm and quiet. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves.
【Reactivities and Incompatibilities】
It forms very flammable mixtures with combustible materials and this mixture may be explosive if the combustible material is very finely divided. Prolonged exposure to fire or heat by the material may result in an explosion.
Mixtures with grease are shock-sensitive explosives at 120 deg C.
A combination of finely divided /sodium bromate with aluminum, arsenic, carbon, copper, org matter, metal sulfides, phosphorus, or sulfur/...can be exploded by heat, percussion, and, sometimes, light friction.
Violent reactions with aluminum, arsenic, carbon, copper, oil, F2, metal sulfides, organic matter, phosphorus, sulfur.
A combination of finely divided aluminum with finely divided bromates (also chlorates and iodates) of ... sodium ... can be exploded by heat, percussion, and sometimes, light friction.
A combination of finely divided arsenic with finely divided bromates (also chlorates and iodates) of ... sodium ... can be exploded by heat, percussion, and sometimes, by light friction.
A combination of finely divided organic matter with finely divided bromates (also chlorates and iodates) of ... sodium ... can be exploded by heat, percussion, and sometimes, light friction.
A combination of finely divided carbon with finely divided bromates (also chlorates and iodates) of ... sodium ... will explode with heat, percussion, and sometimes light friction.
A combination of finely divided copper with finely divided bromates (also chlorates and iodates) of ... sodium ... will explode with heat, percussion, and sometimes light friction.
A combination of finely divided metal sulfides with finely divided bromates (also chlorates and iodates) of ... sodium ... can be exploded by heat, percussion, and, sometimes, light friction.
A combination of finely divided phosphorus with finely divided bromates (also chlorates and iodates) of ... sodium ... will explode with heat, percussion, and, sometimes, light friction.
A combination of finely divided sulfur with finely divided bromates (also chlorates and iodates) of ... sodium ... will explode with heat, percussion, and sometimes, light friction.
【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.
99%) 6 pp. (October 16, 2006) Available from, as of August 3, 2008: http://www.sigmaaldrich.com/catalog/search/SearchResultsPage/Expand ] **PEER REVIEWED**">Avoid breathing dust. Do not get in eyes, on skin, on clothing. Avoid prolonged or repeated exposure.
99%) 6 pp. (October 16, 2006) Available from, as of August 3, 2008: http://www.sigmaaldrich.com/catalog/search/SearchResultsPage/Expand ] **PEER REVIEWED**">Wear self-contained breathing apparatus, rubber boots, and heavy rubber gloves. In case of leak or spill, evacuate area.
If material not on fire and not involved in fire: Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers.
Personnel protection: ... Do not handle broken packages unless wearing appropriate personal protective equipment. Wash away any material which may have contacted the body with copious amounts of water or soap and water.
【Protective Equipment and Clothing】
99%) 6 pp. (October 16, 2006) Available from, as of August 3, 2008: http://www.sigmaaldrich.com/catalog/search/SearchResultsPage/Expand ] **PEER REVIEWED**">ENGINEERING CONTROLS. Use only in a chemical fume hood. Safety shower and eye bath. PERSONAL PROTECTIVE EQUIPMENT. Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing.
Personnel protection: Wear appropriate chemical protective gloves, boots and goggles. Wear positive pressure self-contained breathing apparatus when fighting fires involving this material.
【Specification】

General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Substance is noncombustible.
Extinguishing Media: Use extinguishing media most appropriate for the surrounding fire.?
Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Storage: Store in a cool, dry place. Store in a tightly closed container.

【Report】

Reported in EPA TSCA Inventory.

【Disposal Methods】
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.
99%) 6 pp. (October 16, 2006) Available from, as of August 3, 2008: http://www.sigmaaldrich.com/catalog/search/SearchResultsPage/Expand ] **PEER REVIEWED**">Cautiously acidify a 3% solution or a suspension of the material to pH 2 with sulfuric acid. Gradually add a 50% excess of aqueous sodium bisulfite with stirring at room temperature. An increase in temperature indicates that a reaction is taking place. If no reaction is observed on the addition of about 10% of the sodium bisulfite solution initiate it by cautiously adding more acid. If manganese, chromium, or molybdenum are present adjust the pH of the solution to 7 and treat with sulfide to precipitate for burial as hazardous waste. Destroy excess sulfide, neutralize, and flush the solution down the drain. Observe all federal, state, and local environmental regulations.

Use and Manufacturing

【Use and Manufacturing】
Methods of Manufacturing

By passing bromine into a solution of sodum carbonate, sodium bromide and sodium bromate being formed.
Electrolytic oxidation of sodium bromide
U.S. Exports

(1986) No Data
U.S. Imports

(1986) No Data
U.S. Production

(1986) No Data
Production volumes for non-confidential chemicals reported under the Inventory Update Rule. Year Production Range (pounds) 1986 No Reports 1990 No Reports 1994 10 thousand - 500 thousand 1998 No Reports 2002 10 thousand - 500 thousand

Biomedical Effects and Toxicity

【Biomedical Effects and Toxicity】
... The clinical course of a 2-year-old male (13 kg) with acute BrO3- poisoning /was described/. The child had ingested 1-2 ounces (30-60 mL) of a permanent wave solution containing 10-12 g BrO3-/100 mL. The child's estimated dose was 230-460 mg BrO3-/kg. Serum bromide levels peaked 12 hours after ingestion. The amount of bromide recovered from dialysate and urine was 1,850 mg, accounting for approximately 60%-70% of the bromate ingested. /Permanent wave solution containing 10-12 g BrO3-/100 mL/
Skin penetration of sodium bromate is slight as judged by blood bromide levels of somewhat less than 1 mg % from a 7-hr moistened application of the salt to rabbit's skin.

Supplier Location

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