Sodium Metabisulfite CAS#7681-57-4

Sodium Metabisulfite CAS#7681-57-4

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Sodium Metabisulfite CAS#7681-57-4
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Chemical Name:Sodium Metabisulfite
CAS No.:7681-57-4
Molecular Formula:H2O5S2.2Na
Sample: Available
Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
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Product Description

Sodium Metabisulfite CAS#7681-57-4

Sodium metabisulfite is a widely used inorganic compound, usually in the form of white or slightly yellowish crystalline powder or small crystals, with a strong smell of sulfur dioxide. It has a density of 1.48g/cm³, is highly soluble in water, and its aqueous solution is acidic. At 20℃, its solubility in water is 54g/100ml, and at 100℃, it is 81.7g/100ml.

Sodium metabisulfite Chemical Properties

Melting point

>300 °C (lit.)

density

1.48

bulk density

1000-1200kg/m3

refractive index

1.474

storage temp.

Store at +5°C to +30°C.

solubility

540 g/L (20°C)

form

Powder/Solid

Specific Gravity

1.48

color

White to slightly yellow

PH

3.5-5 (50g/l, H2O, 20℃)

Odor

Sulphorous

PH Range

4.5 at 50 g/l at 20 °C

Water Solubility

540 g/L (20 ºC)

Sensitive

Air & Moisture Sensitive

Merck

14,8638

Exposure limits

ACGIH: TWA 5 mg/m3NIOSH: TWA 5 mg/m3

Stability:

Stable. Incompatible with strong oxidizing agents, strong acids. Contact with strong acids releases a poisonous gas. May be moisture and air sensitive.

InChIKey

HRZFUMHJMZEROT-UHFFFAOYSA-L

CAS DataBase Reference

7681-57-4(CAS DataBase Reference)

EPA Substance Registry System

Sodium metabisulfite (7681-57-4)


Safety Information

Hazard Codes

Xn,Xi

Risk Statements

22-31-41-36/37/38-52

Safety Statements

26-39-46-36-16

RIDADR

3260

OEB

B

OEL

TWA: 5 mg/m3

WGK Germany

1

RTECS

UX8225000

TSCA

Yes

HS Code

2832 10 00

PackingGroup

III

Hazardous Substances Data

7681-57-4(Hazardous Substances Data)

Toxicity

LD50 orally in Rabbit: 1540 mg/kg LD50 dermal Rat > 2000 mg/kg

Product Usage

Sodium metabisulfite, as an inorganic compound with strong reducing properties, can be used as a food antioxidant, preservative and bleaching agent in food grade, and in industrial grade in the synthesis of chemical products, paper bleaching, rubber solidification, etc. In the medical field, it can also be used as a raw material for the production of chloroform, benzaldehyde and other drugs.


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