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Anhydrous Sodium Sulfite CAS#7757-83-7

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Chemical Name：Anhydrous Sodium Sulfite

CAS No.:7757-83-7

Molecular Formula：Na2O3S

Sample: Available

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Product Details

Anhydrous Sodium Sulfite CAS#7757-83-7

Sodium sulfite anhydrous is a widely used inorganic chemical product, which is highly soluble in water. Its aqueous solution shows an alkaline reaction, and its solubility increases with the rise in temperature. For instance, at 0℃, its solubility is 12.54g/100ml of water, and at 80℃, it is 283g/100ml of water. It is insoluble in ethanol and almost insoluble in ether. It has a relatively high melting point and is not prone to spontaneous combustion.

Anhydrous Sodium Sulfite CAS#7757-83-7

Sodium sulfite Chemical Properties

Melting point	500 °C
density	2.63
bulk density	1480kg/m3
refractive index	1,484
storage temp.	Store at +5°C to +30°C.
solubility	H2O: 1 M at 20 °C, clear, colorless
form	Solid
Specific Gravity	2.633
color	White to slightly yellow
Odor	Odorless
PH Range	9.0 - 10.5 at 126 g/l at 25 °C
PH	9.0-10.5 (25℃, 1M in H2O)
Water Solubility	23 g/100 mL (20 ºC)
Sensitive	Hygroscopic
Merck	14,8682
Stability:	Stable. Incompatible with strong acids. Moisture and air sensitive.
CAS DataBase Reference	7757-83-7(CAS DataBase Reference)
NIST Chemistry Reference	sodium sulfite(7757-83-7)
EPA Substance Registry System	Sodium sulfite (7757-83-7)
Absorption	cut-off at 265nm in H2O at 1M

Safety Information

Hazard Codes	Xn
Risk Statements	31-36/37/38-22-40-36/38
Safety Statements	24/25-36-26-22
WGK Germany	1
RTECS	WE2150000
F	3-10
TSCA	Yes
HS Code	28321000
Hazardous Substances Data	7757-83-7(Hazardous Substances Data)
Toxicity	LD50 i.v. in mice: 175 mg/kg, Hoppe, Goble, J. Pharmacol. Exp. Ther. 101, 101 (1951)

Product Usage

Sodium sulfite anhydrous, as an inorganic compound with strong reducing properties, can be used in industrial grade for defiltration in dyeing and printing, food grade as a compliant additive for the preservation of fruits, vegetables and seafood, photographic grade for development in the photosensitive industry, and pharmaceutical grade as an intermediate raw material for chloroform, benzaldehyde and other drugs. It is also widely used in papermaking, electronics and other fields.

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