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Properties:
colorless or white hexagonal or orthorhombic crystal or granular powder. Relative density 2.662 Softening point 588 ℃, melting point 1069 ℃, boiling point 1689 ℃. Soluble in water (12G/100ML water at 25 ℃, 24.1G/100ML water at 100 ℃), insoluble in alcohol, acetone and carbon disulfide.
Specification: Industrial grade potassium carbonate (GB/T 1587-2000)
Index |
Unit
|
Superior
|
Color tube grade
|
First class
|
Qualified
|
|
Content(K2CO3)
|
% ≧
|
99.0
|
99.0
|
98.5
|
96.0
|
|
Chloride(KCl)
|
% ≦
|
0.01
|
0.03
|
0.10
|
0.20
|
|
Sulfur compound (K2SO4)
|
% ≦
|
0.01
|
0.04
|
0.10
|
0.15
|
|
Iron
|
% ≦
|
0.001
|
0.001
|
0.003
|
0.010
|
|
Water insoluble matter
|
% ≦
|
0.02
|
0.04
|
0.05
|
0.10
|
|
Loss on ignition
|
% ≦
|
0.6
|
0.8
|
1.00
|
1.00
|
Specification: Food additive potassium carbonate (HG2452-93)
Index |
Unit
|
Standard value
|
|
Potassium carbonate(K2CO3)
|
% ≧
|
99.0
|
|
Chloride(KCl)
|
% ≦
|
0.01
|
|
Sulfur compound (K2SO4)
|
% ≦
|
0.01
|
|
Iron
|
% ≦
|
0.001
|
|
Water insoluble matter
|
% ≦
|
0.02
|
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Loss on ignition
|
% ≦
|
0.6
|
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Arsenic
|
% ≦
|
0.0003
|
|
Heavy metal(Pb)
|
% ≦
|
0.002
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Packing:
Woven bag or paper-plastic composite bag, lined with plastic bag, net weight 25/50/500/800/900/1000 KG.
Storage and transportation:
Keep in dry and well-ventilated warehouse. To protect from damp and rain.
Notes:
Separate from organic matters and sulfur.
Uses:
As raw material for producing electronic valve, television pictrue tube, glass envelope of computer monitor, food additive potassium sorbate, monopotassium phosphate. Moreover, it can also be used in ink, polyester, explosive, electroplating, leather, porcelain, buiding material, crystal and drugs.
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