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CAS:7681-57-4
MF:Na2S2O5
MW:190.11
EINECS:231-673-0
Other Names:sodium pyrosulfite
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.
Specification
|
ITEM
|
TEST RESULT
|
|
Sodium Metabisulphite (Na2S2O5) %
|
97.21
|
|
SO2 % ≥
|
65
|
|
Fe % ≤
|
0.002
|
|
Clarity
|
clear
|
|
Insoluble matter in nitric acid% ≤
|
0.009
|
|
AS%
|
<0.00009
|
|
Phosphoric acid test ≤
|
4.2
|
|
Appearance
|
White to slightly yellowish
crystialline powder |
Usage
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.
Packing
25kgs/drum, 9tons/20’containerPacking
