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Sodium sulfate CAS#7757-82-6

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Chemical Name：Sodium sulfate

CAS No.:7757-82-6

Molecular Formula：Na2SO4

Molecular weight:142.04214

Sample: Available

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Product Details

Products Description of Sodium sulfate CAS#7757-82-6

Sodium sulfate is an important chemical raw material and the main raw material for producing chemical products such as sodium sulfide and sodium silicate. Sodium sulfate is also called glauber's salt, anhydrous sodium sulfate, and anhydrous sodium sulfate. White monoclinic crystals are fine crystals or powders. Relative density is 2.68, melting point is 884℃. Soluble in water, and the aqueous solution is neutral. Soluble in glycerol, insoluble in ethanol, exposed to air, it easily absorbs water to become hydrated sodium sulfate. It is a homogeneous polycrystalline substance, which is rhombus at a temperature of 32.4-223℃, and monoclinic crystals are formed at a higher temperature, and it turns into hexagonal crystals at 241℃. When crystallized from a solution, it has an affinity for iron, iron compounds and various organic matter; high-purity, fine-grained anhydrous sodium sulfate is called glauber's salt.

Sodium sulfate Chemical Properties

Melting point	884 °C (lit.)
Boiling point	1700°C
density	2.68 g/mL at 25 °C (lit.)
refractive index	1.484
storage temp.	Store at +5°C to +30°C.
solubility	H₂O: 1 M at 20 °C, clear, colorless
form	powder (fine)
Specific Gravity	2.68
color	White
PH	5.2-8.0 (50g/l, H2O, 20℃)
PH Range	5.2 - 9.2
Odor	wh. cryst. or powd., odorless, bitter saline taste
Water Solubility	18.5 mg/L
λmax	λ: 260 nm Amax: 0.015 λ: 280 nm Amax: 0.015
Sensitive	Hygroscopic
Merck	14,8680
Dielectric constant	2.7（Ambient）
Stability:	Stable. Incompatible with strong acids, aluminium, magnesium, strong bases. Hygroscopic.
LogP	-1.031 (est)
CAS DataBase Reference	7757-82-6(CAS DataBase Reference)
NIST Chemistry Reference	Sodium sulfate(7757-82-6)
EPA Substance Registry System	Sodium sulfate (7757-82-6)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	24/25
WGK Germany	1
RTECS	WE1650000
F	3
TSCA	Yes
HS Code	28331100
Hazardous Substances Data	7757-82-6(Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: > 2000 mg/kg

Product Application of Sodium sulfate CAS#7757-82-6

Sodium sulfate is an important raw material for making glass and paper. It is used in the papermaking and cellulose industries in the largest amount, accounting for about 70% of the total. Sodium sulfate is a component of synthetic detergents. It is a neutral salt. Adding it can reduce surface tension and increase the solubility of detergents. It is also a diluent for dyes and an auxiliary agent for dyeing and printing. It is used as an accelerator for dyeing cotton fibers with direct dyes, sulfur dyes, and vat dyes, and as a retarder for dyeing silk with direct dyes. In the chemical industry, sodium sulfate is used as a raw material for making sodium sulfide, gypsum, sodium silicate and other chemical products.

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