Product Name: Sodium Metabisulphite
Synonym:Sodium Pyrosulfite
Formula:Na2S2O5
M.W.: 190.10
Description: White or slightly yellow granular powder with the odor of sulfadioxide, soluble in water,water solution is alkaline in reaction.It will be turned into Na2SO4 when exposed to air.
Specification: (Tech. grade)
Content(as SO2) |
65% min |
Insoluble matter in water |
0.05% max |
Fe |
0.005% max |
PH |
4-4.6 |
Uses: Photographic developer, Chrome tanning of leather, Manufacture of dyes and
Chemicals. Dyeing of textiles, Antichlor in bleaching(cotton, wool, fibre, ect.),
Preservative for food, Deal with waste water containing with chrome, Reducing
agent for chemical, Handle latex emulsion, Rayon, Paper, medical industries.
Specification: (Food grade)
Content(as SO2) |
65% min |
Insoluble matter in water |
0.05% max |
Fe |
0.005% max |
PH |
4-4.6 |
Heavy metal(as Pb) |
0.002% max |
Arsenic(As) |
0.0002% max |
Uses: as preservative, bleach or loosener for food
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