Potassium carbonate
- Số CAS
- 584-08-7
- Khối lượng phân tử
- 138.20
- Công thức phân tử / ký hiệu hóa học
- K2CO3
Mô tả
Apearances: The white crystalline powder.Density 2.428g/cm3. The melting point 89l ℃. Boiling decomposition. Soluble in water, aqueous solution is alkaline, insoluble in ethanol, acetone and ether. Strong hygroscopicity, and exposed to the air can absorb carbon dioxide and moisture, converted to potassium bicarbonate. Hydrate monohydrate, dihydrate, trihydrate. Its very hygroscopic, deliquescent in the air. Potassium carbonate aqueous solution is alkaline. Gradually absorb carbon dioxide and potassium bicarbonate solid long-term storage, K2CO3 not soluble in ethanol and ether.
ỨNG DỤNG
For
optical glass, welding electrodes, tubes, television tubes, light bulbs,
printing and dyeing, dyes, inks, photographic drugs, sodium silicate,
polyester, explosives, electroplating, tanning, ceramic, building materials,
crystal, potassium soap and Drug production.
Used
as a gas adsorbent powder extinguishing agent, rubber antioxidant.
Used
for removal of the fertilizer in the synthesis gas carbon dioxide. Can also be
used as a potassium fertilizer. With the continuous development of high-tech,
potassium carbonate in washing additives and MSG, food and other fields are
also increasingly expanding.
Keywords:Surface treatment chemicals
Phiếu kiểm nghiệm
|
|
(GR) |
(AR) |
(CP) |
|
≥ |
99.0% |
99.0% |
98.0% |
|
The highest impurity content |
|
|
|
|
Clarity Test |
Qualified |
Qualified |
Qualified |
|
Water insoluble matter |
0.005 |
0.01 |
0.03 |
|
Chloride (Cl) |
0.001 |
0.002 |
0.01 |
|
Sulfur compounds (SO4) |
0.002 |
0.004 |
0.01 |
|
Nitrogen compound (N) |
0.001 |
0.001 |
0.01 |
|
Phosphate (PO4) |
0.002 |
0.005 |
0.01 |
|
Silicate (SiO3) |
0.002 |
0.005 |
0.01 |
|
Na |
0.02 |
0.05 |
0.10 |
|
Mg |
0.0005 |
0.002 |
0.005 |
|
Ca |
0.01 |
0.015 |
0.02 |
|
Al |
0.005 |
0.01 |
0.03 |
|
Fe |
0.0005 |
0.001 |
0.002 |
|
Heavy metals (as Pb) |
0.0005 |
0.0005 |
0.0005 |
|
As |
0.00005 |
0.00005 |
0.00005 |