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Description：White crystals,
melting at 100℃ while losting crystalline water, decomposing at
234℃, soluble in about nine portions of water, two portions of
boiling water and its aqueous solution appears acidity, insoluble
in alcohol.
Specification：
| HG3-1300-80 |
| Item项
目 |
Index
标 |
| Content
% |
99.5 |
| Clarity |
qualified |
| Chloride
(Cl) ≤% |
0.01 |
| Sulphate
≤% |
0.015 |
| Phosphate（PO4）≤% |
0.005 |
| Iron
(Fe) ≤% |
0.005 |
| Heavy
metals (on Pb) ≤ % |
0.005 |
| CNS
K7451 |
| Item项
目 |
Index
指 标 |
| Content(NaHC4H4O4)
% |
99.0~100.5 |
| NH4OH
insoluble matter≤% |
0.010 |
| Chloride
(Cl) ≤% |
0.002 |
| Phosphate（PO4）≤% |
0.001 |
| Sulphate(SO4)
≤% |
0.005 |
| Ammonia（
NH3）≤% |
0.02 |
| calcium
(Ca) ≤% |
0.005 |
| Heavy
metals (on Pb) ≤ % |
0.001 |
| Iron
(Fe) ≤% |
0.001 |
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