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As a professional chemical exporter, we specialize deeply in the field of chemical raw materials, offering you:
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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.
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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Packaging And Shipping
We provide fully compliant, safe and customizable packaging solutions for Sodium Hydroxide, Calcium Chloride, Sodium Carbonate, Potassium Hydroxide and all our industrial chemical products. All packaging strictly follows UN, IMDG and IATA international transport standards, with anti-leakage, moisture-proof and corrosion-resistant design. We also offer professional loading, container reinforcement and full-process traceable global shipping services, ensuring your goods arrive safely and on time at any destination worldwide.
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