1,Formula: C6H5Na3O7·2H2O
2,Formula wt, dihydrate 294.10
3,CAS: dihydrate [6132-04-3]
4,Specificity: Colorless or white crystalline granule or crystalline powder odorless; taste salty and cold, soluble in water, difficulty in ethanol; slightly deliquescence in moist air,PH7.5－9 in 5% aqueous solution, when heated to 150℃,it may lose crystal water.
5,Packing: 25kg net paper bag or 1mt big bag with PE liner.
| Name of index |
BP98 |
E-331(iii) |
| Description |
Crystalline white powder or colourless crystals |
| Content |
99.0-101.0% |
≥99.0%( anhydrous basis) |
| Acidity and Alkalinity |
Accord with the test |
-- |
| Sulphate,≤% |
0.015 |
-- |
| Heavy metals(As Pb), ≤% |
0.001 |
0.0005 |
| Oxalate(As H2C2O4), ≤% |
0.03 |
0.01 |
| Easy carbonify substance |
Accord with the test |
-- |
| Chloride, ≤% |
0.005 |
-- |
| Loss on drying, |
11.0-13.0% |
≤13.5% |
| pH value(5% aqueous solution) |
-- |
7.5-9 |
| Arsenic(As),≤ppm |
-- |
1 |
| Lead(Pb),≤ppm |
-- |
1 |
| Mercury(Hg),≤ppm |
-- |
1 |
|
