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Factory wholesale analysis pure reagent grade liquid 85% content phosphoric acid chemical national standard high quality industrial grade phosphoric acid 85
The pure industrial phosphoric acid is a colorless transparent viscous liquid or orthorhombic crystal, which is odorless and tastes very acidic; the commercially available phosphoric acid content is mostly 85%, which is colorless transparent or slightly light-colored, thick liquid. Mainly used in electroplating industry, pharmaceutical industry, phosphate industry and metallurgical industry. Phosphoric acid vapor has a strong corrosive effect on the skin, and the staff pay attention to protect the respiratory organs and skin.
Phosphoric acid industrial use
Wet process phosphoric acid is mainly used in the manufacture of various phosphates such as ammonium phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, trisodium phosphate, and the like, and condensed phosphates. Refined phosphoric acid is used to make calcium hydrogen phosphate for feed. It is used for phosphating of metal surfaces, preparing electrolytic polishing liquid and chemical polishing liquid for polishing aluminum products. The pharmaceutical industry is used to manufacture oil sodium phosphate, iron phosphate, etc., and is also used in the manufacture of zinc phosphate as a dental filling adhesive. Used as a catalyst for the condensation of phenolic resins, a desiccant for the production of fuels and intermediates. The printing industry is used to prepare cleaning solutions for stains on off-print offset printing plates. Also used to prepare matchstick stains. The metallurgical industry is used to produce phosphoric acid refractory mud and improve the life of steelmaking furnaces. It is a coagulant for rubber slurries and a raw material for the production of inorganic binders. The paint industry is used as a metal anticorrosive paint.
Physicochemical properties Pure product is a colorless transparent viscous liquid or orthorhombic crystal, odorless, very acidic. The 85% phosphoric acid sold in the market is a colorless transparent or slightly light, thick liquid. The temperature of 42.35 ° C. At a boiling point of 213 ° C (loss of H 2 O), pyrophosphoric acid is formed. Heating to 300 ° C becomes metaphosphoric acid. The relative density is d181.834. Soluble in water, soluble in ethanol. Its acidity is weaker than strong acids such as sulfuric acid, hydrochloric acid and nitric acid, but stronger than weak acids such as acetic acid and boric acid. Can stimulate the skin to inflame and destroy the body tissue. Concentrated phosphoric acid has an erosive effect when heated in porcelain. It is hygroscopic.
Liquid 85 phosphate index:
|
sample name |
Liquid 85 phosphate |
Quality of inspection |
500ML |
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|
Sample unit |
Finished product library |
Sample date |
2019.05.25 |
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|
Analysis standard |
GB-T 2091-2008 |
Inspection date |
2019.05.25 |
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|
Serial number |
Test items |
standard value |
test result |
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|
1 |
Chromaticity (number)≤ |
30 |
29.6 |
||
|
2 |
(H3PO4 )% ≥ |
85 |
85.7 |
||
|
3 |
( Cl )% ≤ |
0.0005 |
0.0005 |
||
|
4 |
( SO4 )% ≤ |
0.003 |
0.003 |
||
|
5 |
(Fe)% ≤ |
0.002 |
0.002 |
||
|
6 |
(As)% ≤ |
0.0001 |
0.0001 |
||
|
7 |
Exterior |
Colorless transparent liquid |
Colorless transparent liquid |
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