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Sodium Metabisulfite

Name: Sodium Metabisulfite
SKU: 0

Sodium Metabisulfite
CAS No.: 7681-57-4
Molecular Formula: Na2O5S2
Molecular Weight: 190.095

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PRODUCT DESCRIPTION

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.

Chemical Properties

Property	Value
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

Property	Value
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 is a commonly used reducing agent and antioxidant widely applied in food, pharmaceutical, textile, and water treatment industries. In the food industry, it acts as a preservative and antioxidant to prevent browning and extend shelf life. In pharmaceuticals, it is used as a stabilizer and reducing agent in drug manufacturing. In the textile industry, it plays a role in bleaching and dyeing processes. It is also used in water treatment to remove residual chlorine, offering good chemical stability and cost-effectiveness.

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Fast transport time

Inventory 2-3 working days New manufacturing 7-10 working days

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A:Of course, we welcome customers from all over the world to visit our factory.

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A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

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A:Within 3-15 days after we confirm you requirement.

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A:T/T, L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me.

Q: Do you provide samples?
A:Yes,we could offer the sample for you to test but please pay freight fee.

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