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2.M. F. : NaC6H5O7.2H2O
3. M. W. : 294.10
4.Physical properties: colorless crystalloid or white crystalline powder; Odourless, cool and salty; Slightly deliquescent in moist air; Efflorescent in hot air; Soluble in water but insoluble in Ethanol. To decompose when heated and to lose cystal water at 150°C.
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PARTICUAR |
STANDARD PARAMETER |
RESULT |
|
Appearance |
White or light yellow crystal or powder |
White or light yellow crystal or powder |
|
Assay ≥% |
99.0-101.0 |
99.96 |
|
Heavy |
0.001 |
0.001 |
|
Moisture % |
11.0-13.0 |
12.27 |
|
Chloride≤% |
0.005 |
0.005 |
|
Sulphate≤% |
0.15 |
0.15 |
|
Qxalate≤% |
0.3 |
0.3 |
|
CONCLUSION |
Qualified |
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Storage and transport: It should be stored in a dry, ventilating and cleaning warehouse, kept away fron moisture and hot . Furthermore, it should be stored separately from poisonous.