|
Properties:
White crystalline powder, odorless, with special sourness (with alkaline taste). It will be carbonized if heated. Melting point: about 290℃. Soluble in water (6.87g/100ml,25℃)
Molecular formula: C4H3NaO4
Molecular weight: 138.06
CAS NO.: 7704-73-6
Structural formula:
Specification:
|
Item |
Unit |
Index |
|
Purity (base on dry basis) |
% |
98-102 |
|
5% solution Properties |
|
colorless transparent |
|
PH value of 33.3% aqueous solution |
|
3-4 |
|
Sulfate (base on SO42-) |
% |
≤0.01 |
|
Heavy metal (base on Pb) |
PPM |
≤20 |
|
Arsenic (base on As) |
PPM |
≤2 |
|
Loss on drying (120℃, 4h) |
% |
≤0.5 |
|
Maleic acid |
% |
≤0.05 |
|
Lead |
PPM |
≤10 |
Usage:
Buffering agent, flavoring agent, oxidation resistance auxiliaries. Used in producing wine, cold drink, sweet products, canned fruit, jam, jelly, etc. |
