Product Description
Sodium metabisulfite industrial grade used for alkyl spice aldeheyde in spice industry
- Description
| Name |
Sodium Metabisulfite |
| Molecular formula |
Na2S2O5 |
| Molecular weight |
190.09 |
| Executive standard |
HG/T 2826-2008 |
| CAS NO. |
7681-57-4 |
| EINECS NO. |
231-673-0 |
| Appearance |
White or yellowish crystal powder |
| Density |
1.48g/cm3 |
| Melting point |
170ºC |
| Odor |
Strong SO2 odor |
| Solubility |
Soluble in water and acidic in aqueous solution |
| Property |
When exposed to strong acid,it emits SO2 to form corresponding salts.When exposed to air for a long time,it oxidizes to Na2S2O4,so the product can not last forever.SO2 is decomposed when the temperature is higher than 1500ºC. |
2.Specification
| Item |
Index |
| Superior quality |
First class |
| Main content(Na2S2O4),% ≥ |
96.5 |
95 |
| Iron(Fe),% ≤ |
0.005 |
0.01 |
| Water-insoluble,% ≤ |
0.05 |
0.05 |
| Arsenic(As) ,% ≤ |
0.0001 |
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3. Uses
1) Printing and dyeing mordant
2) Antichlor in after fabric bleaching
3) Chemical and medicine reducer and sulfonating agent
4) Bleaching agent of bamboo
5) Wood and paper fiber
6) Nonferrous metal dressing agent
7) Waste water finishing agent
8) Rubber coagulator
9) Alkyl spice aldeheyde in spice industry
10) Depilating agent
11) Softening agent and anti-wear agent in leather industry
12) Reducer of developer and protective agent of fixative in sensitization industry
4.Packing and Transport
Packing:25/50/1000kg bag
Transport: should be protected from rain and sunlight.It is strictly prohibited to store and transport with acids,oxidants and harmful and toxic substances.
Storage: Should be stored in a dry,clean warehouse.The package should be sealed to prevent air oxidation.Guard against moisture.
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