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Phosphoric Acid
CAS NO : 7664-38-2
Molecular Formula : H3PO4
Molecular Weight :97.99
UN Number:1805
UN Class : 8-corrosive substance
Structure Formula:
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Specification:
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Indexes |
Industrial
Grade |
Food
Grade |
1 |
Appearance |
Colorless, transparent
syrupy liquid or in very light color |
Colorless, transparent
syrupy liquid or in very light color |
2 |
Colour (hazen units)
Max |
20 |
20 |
3 |
Assay (asH3PO4)% Min |
85.0 |
85.0 |
4 |
Chloride(asCl-) %
Max |
0.0005 |
0.0005 |
5 |
Sulphats(as SO4 2- )%
Max |
0.005 |
0.005 |
6 |
Iron (Fe)% Max |
0.002 |
0.001 |
7 |
Arsenic (As)% Max |
0.005 |
0.00005 |
8 |
Heavy metals(as Pb)%
Max |
0.001 |
0.0005 |
9 |
Oxidable matter (as H3PO4 )% |
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0.012 |
Application:
Industrial grade is used to pre-metal treatment, waste water treatment, soaps and detergents Food grade phosphoric acid is used to acidify foods and beverages such as various colas.
Handling & Storage:
Exposure to phosphoric acid is minimized by handling within closed tanks and pipelines. Bulk tanks and delivery points are best located away from hydroxide material stores, sources of heat and fire. Tanks should be bundled to facilitate protection from accidental impact and secondary containment in the event of tank failure of spillage. |
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