1, molecular formula: C6H5K3O7●H2O , molecular weight: 324.41
2, white or slightly yellow crystalline granule or crystalline powder, no smell, taste salty, cool, slight deliquescence, easily soluble in water or glycerine, almost insoluble in ethanol, Relative density 1.98. Melting point is 230 degrees Celsius.
3, use: used as buffer in the food industry, chelating agent, stabilizer, antioxidant, emulsifying agent and flavoring agent. Can be used for milk and dairy products, jelly, jam, meat, canned gel snacks, is also used for cheese , citrus preservation, etc.Used for hypokalemia…in pharmaceutical industry, potassium deficiency and alkalization of urine.
4, Packing: Packed with polyethylene plastic bag as liner, and woven bag as the outer layer. The net weight of each bag is 25kg.
指标名称 |
Name of index |
|
BP2010 |
E-332(ii) |
USP-30 |
外观 |
Description |
|
White, hygroscopic, granular powder or transparent crystals |
鉴别试验 |
Identification |
|
Pass test |
Pass test |
Pass test |
溶解度 |
Solubility |
|
Very soluble in water, practically insoluble in ethanol (96 per cent) |
-- |
-- |
溶液外观 |
Appearance of solution |
|
Solution is clear and colorless |
-- |
-- |
含量(以干基计) |
Assay (anhydrous basis) |
% |
99.0—101.0 |
≥99.0 |
99.0-100.5 |
氯化物 |
Chloride |
≤ppm |
50 |
-- |
-- |
重金属 |
Heavy metals |
≤ppm |
10 |
-- |
10 |
有机挥发杂质 |
Organic volatile impurities |
|
-- |
-- |
Pass test |
钠 |
Sodium, |
≤% |
0.3 |
-- |
-- |
草酸盐 |
Oxalates |
≤% |
0.03 |
0.01 |
-- |
硫酸盐 |
Sulphates |
≤% |
0.015 |
-- |
-- |
酸碱度 |
Acidity or Alkalinity |
|
Pass test |
-- |
Pass test |
酒石酸盐 |
Tartrate |
|
-- |
-- |
Pass test |
易碳化物 |
Readily carbonisable substances |
|
Pass test |
-- |
-- |
干燥失重 |
Loss on drying |
% |
4.0-7.0 |
≤6(180℃,4h) |
3.0-6.0(180℃,4h) |
pH(5%水溶液) |
pH(5% aqueous solution) |
|
-- |
7.5-9.0 |
-- |
砷 |
Arsenic(As), |
≤ppm |
-- |
1 |
-- |
铅 |
Lead(Pb) |
≤ppm |
-- |
1 |
-- |
汞 |
Mercury(Hg) |
≤ppm |
-- |
1 |
-- |
|