Phosphoric acid
Phosphoric acid
Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is a weak acid with the chemical formula H 3PO 4. It is normally encountered as a colorless syrup of 85% concentration in water. The pure compound is a colorless solid.
All three hydrogens are acidic to varying degrees and can be lost from the molecule as H ions (protons). When all three H ions are removed, the result is an orthophosphate ion PO4 , commonly called "phosphate". Removal of one or two protons gives dihydrogen phosphate ion H 2PO 4, and the hydrogen phosphate ion HPO 4, respectively. Orthophosphoric acid also forms esters, called organophosphates.
Except 85% aqueous solution, we can also supply poly phosphoric acid 115-118%.
Specification of Phosphoric acid
National standard:Food grade:GB1886.15-2015; Tech grade:GB-T202091-2008
Items | Tech grade | Food grade |
Appearance | Colorless or light color reticulated liquid. | |
Chromaticity≤ | 30.0 | 20.0 |
Content(H3P4)%≥ | 85.0 | 75-86 |
Chloride(in CL)%≤ | 0.0005 | |
Sulphates(with SO4)%≤ | 0.003 | |
Iron(Fe)%≤ | 0.002 | |
Arsenic(As)%≤ | 0.0001 | 0.00005 |
Heavy metal (Pb)%≤ | 0.001 | 0.0005 |
Oxide(with h2PO3)%≤ | 0.012 | |
Fluoride(F)%≤ | 0.001 | |
Specification of poly phosphoric acid:
Items | Specification |
Chromaticity (black) ≤ | 40.0 |
Phosphoric acid (H3PO4) content%≥ | 115-118 |
Phosphorus pentoxide (P2O5) content%≥ | 76-86 |
Chloride (Cl)%≤ | 0.0005 |
Iron (Fe)%≤ | 0.0 |
Arsenic (As)%≤ | 0.01 |
Heavy metal (Pb)%≤ | 0.002 |
Packing: 35kg plastic drums, 330kg plastic drums, 1650kg IBC drums.
