Detail

Potassium carbonate

Name: Potassium carbonate

Molecular formula: K2CO3

Molecular weight: 138.2

HS CODE: 28364000

Properties:

Colorless or white hexagonal or orthorhombic crystal or granular powder. Relative density is 2.662, inversion point is 588 ℃, melting point is 1069 ℃, boiling point is 1689 ℃. Soluble in water (12G／100ML water at 25 ℃, 24.1G／100ML water at 100 ℃), insoluble in alcohol, acetone and carbon disulfide.

Uses:
Potassium carbonate functions as raw material for producing electronic valve, television pictrue tube and glass shell of computer monitors.

 

Specification: industrial grade potassium carbonate (GB/T 1587-2000)

Item Unit Superior grade TV glass grade First grade Qualified grade
Assay (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)

Item Unit Standard value
Potassium carbonate (K2CO3 ) % ≧ 99.0
Chloride (KCl) % ≦ 0.01
Sulfur compound (K2SO4) % ≦ 0.01
Iorn % ≦ 0.001
Water insoluble matter % ≦ 0.02
Loss on ignition % ≦ 0.6
Arsenic % ≦ 0.0003
Heavy metal (Pb) % ≦

0.002

 

Packing:
woven bag or plastic-plastic composite bag lined with plastic bag, net weight is 25／50／500／800／900／1000 KG.
Storage and transportation:
Keep in dry and well-ventilated warehouse. To protect from rain and damp. Separate from acids.