Sodium
Metabisulphite
Technical Literature
Properties : White or buff
crystal powder.
Application: Mainly
used in printing and dyeing, medicine, tanning,
etc.
Packing:< 25kg/bag
Formula:
Na2S2O5
Standard: GB 1893-86
Items |
Specification |
Result |
Sodium Metabisulphite(as
SO2) |
65% min |
65.2% |
Iron Content |
0.005% max |
0.003% |
Water-insoluble |
0.05% max |
0.043% |
pH Value |
4.0~4.6 |
4.4 |
Heavy Metal(as Pb) |
0.001% max |
0.001% max |
As |
0.0002% max |
0.0001%
max |
Main
use:
Dye printing mordant;
Textile antichlor after being
bleached;
Reducing agent and
sulfonating agent for chemical and medical
use;
Bamboo, wood, paper fiber
bleaching agent, non-ferrous metal ore dressing
agent, waste water treating , rubber freezing
agent; Bleaching agent(such as candy, cakes,
dried slices of tender bamboo shoots etc.)
Loosening agent（such as bread,
biscuits etc.）preservative,disinfector（such as
jam and can etc.）；Antioxidant, antistaling
agent（such as seafood, fruits, vegetables
etc.）
Packaging: Polypropylene woven bag
lined with polyethylene plastic bag.NW:25,50,
1000kg/bag.
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