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Current Position: Home > Dictionary EN > S > 7757-82-6

sodium sulfate 7757-82-6

Chemical Name sodium sulfate
CAS Registry Number 7757-82-6
PubChemID 24436
Molecular Weight 142.04200
PSA 88.64000
LogP -0.25720
EINECS 231-820-9; 268-366-6
Molecular Formula Na2O4S
 
7757-82-6 Properties
Density 2.68g/mLat 25°C(lit.)
Boiling Point 1700°C
Flash Point °C
Melting Point 884°C(lit.)
Appearance White crystals or powder
Vapour 3.35E-05mmHg at 25°C
Refractive Index 1.484
Solubility H2O18.5 mg/L
Color/Form WHITE POWDER OR ORTHORHOMBIC BIPYRAMIDAL CRYSTALS
MONOCLINIC CRYSTALS FROM 160-185 DEG C
TRANSITION POINT TO HEXAGONAL CRYSTALS IS ABOUT 241 DEG C
Stability Stable. Incompatible with strong acids, aluminium, magnesium, strong bases. Hygroscopic.
HS Code 2833190000
Storage temp Store at RT.
Spectral properties INDEX OF REFRACTION: 1.480
 
7757-82-6 Safety Infomation
Safety Statements S24/25
Risk Statements R36
Hazard Codes Xi
Safety

Hazard Codes: IrritantXi
Risk Statements: 36/37/38
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 24/25
S24/25: Avoid contact with skin and eyes.
WGK Germany: 1
RTECS: WE1650000
F: 3
HS Code: 28331100
Moderately toxic by intravenous route. Mildly toxic by ingestion. An experimental teratogen. Experimental reproductive effects. Questionable carcinogen with experimental tumorigenic effects. Violent reaction with Al. When heated to decomposition it emits toxic fumes of SOx and Na2O. See also SULFATES.
Although sodium sulfate is generally regarded as non-toxic, it should be handled with care. The dust can cause temporary asthma or eye irritation; this risk can be prevented by using eye protection and a paper mask. Transport is not limited, and no Risk Phrase or Safety Phrase apply.

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 oral 5989mg/kg (5989mg/kg)   Shokuhin Eiseigaku Zasshi. Food Hygiene Journal. Vol. 4, Pg. 15, 1963.
mouse LDLo intravenous 1220mg/kg (1220mg/kg)   Compilation of LD50 Values of New Drugs.
rabbit LD50 intravenous 1220mg/kg (1220mg/kg)   Drugs in Japan Vol. -, Pg. 1257, 1990.

Sensitive Hygroscopic
Skin, Eye, and Respiratory Irritations Considered nontoxic and nonirritating to skin and mucous membranes.
Cleanup Methods Spills on land: Contain if possible by forming mechanical barriers to prevent spreading. Shovel material into containers for recovery or disposal.
In Situ Amelioration: Apply anion exchangers. Seek professional environmental engineering assistance through EPA's Enviromental Response Team (ERT), Edison, NJ, 24-Hour No. (201) 321-6660.
Transport 无资料 
Fire Fighting Procedures Most fire extinguishing agents may be used in fires involving sodium sulfate.
Fire Potential Noncombustible solid
Nonflammable
Formulations/Preparations SODIUM SULFATE, USP (GLAUBER'S SALT) ... /DECAHYDRATE/
GRADES: TECHNICAL; CP; DETERGENT; RAYON; GLASS MAKERS.
IMPURE SODIUM SULFATE (90-99%). ... GRADES: TECHNICAL; GLASSMAKER'S (IRON-FREE). /SALT CAKE/
Kemsol
SALT CAKE
Technical, calcined grade 94-96%
Regular grade with a minimum Na2SO4 content of 97%, termed "Salt Cake;" a higher grade, "anhydrous sulfate."
Trona; ACS grade, granular; salt-cake 99.%+% high purity
Exposure Standards and Regulations DIRECT FOOD ADDITIVES- FDA 121.1059, LIMITATIONS: MISCELLANEOUS FOOD ADDITIVE IN CHEWING-GUM BASE; FDA 8.303, LIMITATIONS: IN PRODUCTION OF CARAMEL.
Reactivities and Incompatibilities Sodium sulfate reacts violently with magnesium.
INCOMPATIBILITIES: SULFATES GIVE PRECIPITATES WITH SALTS OF LEAD, BARIUM, STRONTIUM, & CALCIUM. SILVER & MERCURY FORM SLIGHTLY SOL SALTS. ALC ... /PRECIPITATES/ MOST SULFATES OUT OF SOLN. /SULFATE SALTS/
At a temperature of 800 deg C, sodium sulfate and aluminum will explode.
Protective Equipment and Clothing Considered nontoxic and nonirritating to skin and mucous membranes.
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 eyes, skin, and clothing.
Storage: Store in a cool, dry place. Store in a tightly closed container.

Report

Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

Disposal Methods Waste sodium sulfate must never be discharged directly into sewers or surface waters. Recovered sodium sulfate may be disposed of by burial in a landfill.
 
 
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