Sodium Pyrosulfite CAS 7681-57-4

CAS: 7681-57-4
Molecular Formula: H2O5S2.2Na
Molecular Weight: 192.12
EINECS: 231-673-0

Synonyms: Sodium metabisulfite, SO2 58.5% min; disodiummetabisulfite; disodiumpyrosulphite; fertisilo; metabisulfitedesodium; Sodiummetabisufite; SodiumMetabisulphiteAcs; SodiumMetabisulphiteExtraPure

What is of Sodium Pyrosulfite with cas 7681-57-4?

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. It can also be applied to the wine and beer making.

Spécification

ARTICLE	RÉSULTAT DU TEST
Métabisulfite De Sodium (Na2S2O5) %	97.21
SO2 % ≥	65
Fe % ≤	0.002
La clarté	claire
Insoluble matter in nitric acid% ≤	0.009
AS%	<0.00009
Phosphoric acid test ≤	4.2
Apparence	White to slightly yellowish crystialline powder

Application

Sodium Metabisulfite is a preservative and antioxidant that exists as crystals or powder having a sulfur dioxide odor. it is readily solu- ble in water. it is used in dried fruits to preserve flavor, color, and to inhibit undesirable microorganism growth.