Project Description

Product Name Sodium metabisulfite
CAS No. 7681-57-4
Molecular Formula: 2Na.O5S2
Einecs 231-673-0
Synonyms Sodium metabisulfite, anhydrous, extra pure, 97%;Sodiummetabisulfite,ACS,97%min;Sodium metabisulfite, for analysis ACS, 97+%;SODIUM META BISULFITE REAGENT (ACS);sodium metabisulfite, acs
All Items Description
COLOR White to slightly yellow
ODOR colorless crystal or white to yellowish powder
SENSITIVE Air & Moisture Sensitive
SOLUBILITY 540 g/L (20°C)
STABILITY Stable. Incompatible with strong oxidizing agents, strong acids. Contact with strong acids releases a poisonous gas. May be moisture and air sensitive.

Sodium metabisulfite (chemical formula: Na2S2O5) appears as a white crystalline or powder solid with a slight sulfur odor. It is toxic upon inhalation and can strongly irritate skin and tissue. It can be decomposed to release toxic oxide fumes of sulfur and sodium upon high temperature. It can be mixed with water to form a corrosive acid. It is generally used as disinfectant, antioxidant, and preservative agent as well as a laboratory reagent. As a kind of food additive, it can be used as a preservative and antioxidant in food. Pandachem as a leading food additives and food ingredients supplier in China, we can provide you with high quality Sodium metabisulfite.


Sodium metabisulfite in the pulp and paper industry, in the photographic industry and in the various other industries as a bleach or dechlorinator.

Food Grade sodium metabisulfite may be used as a food preservative. It is also commonly added to various food products and wines as a preservative.

Sodium metabisulfite can also be used in the manufacture of other chemicals, Used in production of cleaning agents, detergents, and soaps.

Sodium metabisulfite also acts as a corrosion inhibitor in oil and gas industry, as a bleaching agent in the production of coconut cream, as the source of sulfur dioxide and in the destruction of cyanide in commercial gold cyanidation processes.


Sodium metabisulfite is one of the popular food additives and ingredients in most countries, As a professional Sodium metabisulfite supplier and manufacturer, Pandachem International Corporation has been supplying and exporting Sodium metabisulfite from China for many years, please be assured to buy Sodium metabisulfite at Pandachem. Any inquiries and problems please feel free to send emails to us via, we will reply you within 1 working day.

Other Products CAS Number
Silicon Dioxide 7631-86-9
 Propylene Glycol Alginate(PGA) 9005-37-2
3,5-Dichloro-4-methylbenzoic acid 39652-34-1
Sodium chromate 7775-11-3
Bis(vinylsulfonyl)propanol 67006-32-0