Sodium bicarbonate
- Số CAS
- 144-55-8
- Khối lượng phân tử
- 84.01
- Công thức phân tử / ký hiệu hóa học
- NaHCO3
Mô tả
Apearances: White crystalline powder or granules. Soluble in water, almost insoluble in ethanol, about the loss of carbon dioxide at 50 ℃ hot all becomes sodium carbonate at 100 ℃. Rapid decomposition in weak acid aqueous solution at 20 ℃ decomposition of carbon dioxide and sodium carbonate decomposed to the boiling point. 25 ℃ was dissolved in 10 parts of water were dissolved in 12 parts of water, about 18 ℃ cold made no solution agitation, the of phenolphthalein test strips fresh preparation of 0.1mol / L aqueous solution pH of 8.3. Low toxicity.
ỨNG DỤNG
Used in the production of
biscuits, cakes, bread, bread, soft drinks, carbon dioxide generating agent;
alkaline baking powder and alum composite with soda ash composites for civil
stone base; can also be used as a butter preservative. Fire equipment for the
production of acid-base extinguishers and foam extinguishers.
The
rubber industry to take advantage of its the hair holes agent with alum, H with
the role of a uniform fat hole for rubber, sponge production. Metallurgical
industry as a casting ingot flux.
Machinery industry as a cast (foundry) sand forming additives. Printing and dyeing industry as a fixing agent for dyeing printing, pH buffering agents, fabric dyeing and post-processing agent. The raw materials of the pharmaceutical industry as antacids.
Keywords:Surface treatment
chemicals
Phiếu kiểm nghiệm
|
Product name |
Sodium bicarbonate |
CAS: 144-55-8 |
|
|
Apearances |
White crystalline powder or granules |
||
|
TEST ITEMS |
TEST RESULT |
||
|
|
(GR) |
(AR) |
(CP) |
|
(NaHCO3) ≥ |
99.8 |
99.8 |
99.8 |
|
Aqueous reaction |
Qualified |
Qualified |
Qualified |
|
Clarity Test |
Qualified |
Qualified |
Qualified |
|
Water insolubles ≤ |
0.005 |
0.01 |
0.02 |
|
Chloride and chlorate (as Cl)≤ |
0.001 |
0.002 |
0.005 |
|
Sulfur compounds (SO4)≤ |
0.001 |
0.002 |
0.005 |
|
The nitrogen compound (N)≤ |
0.0005 |
0.001 |
0.002 |
|
Phosphate (PO4) ≤ |
0.001 |
0.002 |
0.005 |
|
Silicate (SiO3)≤ |
0.001 |
0.005 |
0.01 |
|
(Mg) ≤ |
0.002 |
0.003 |
0.005 |
|
(K） ≤ |
0.005 |
0.01 |
0.02 |
|
(Al) ≤ |
0.005 |
0.01 |
0.02 |
|
(Ca) ≤ |
0.005 |
0.007 |
0.001 |
|
(Fe) ≤ |
0.0005 |
0.001 |
0.002 |
|
Heavy metals (Pb)≤ |
0.0005 |
0.001 |
0.002 |
|
Restore iodine substances (HCOOH) ≤ |
0.005 |
-- |
-- |