Phosphoric Acid (H3PO4)

Overview

Phosphoric acid (orthophosphoric acid) is a colorless, odorless, syrupy liquid that mixes with water in any proportion. It is a medium-strength mineral acid and the basic raw material for phosphate salts.

Also known as

Orthophosphoric acid; H3PO4

CAS number

7664-38-2

Molecular formula

H3PO4

Molecular weight

98.00

Specifications

Test items	Specifications
Appearance	Colorless transparent liquid
H3PO4 content /%	As required
Chloride /%	≤0.01
Fe content /%	≤0.002
Sulfate (as SO4) /%	≤0.005
As content /%	≤0.0025
Heavy metals (as Pb) /%	≤0.001
Color (APHA, Pt-Co)	≤20
Water insoluble matter /%	≤0.1

Applications

• Production of sodium, potassium and other phosphate salts
• Metal surface treatment: phosphating, rust removal and polishing
• Water treatment and cleaning formulations
• Fertilizers and catalysts

Packaging

35 kg/drum; 330 kg/drum; 1650 kg/IBC; ISO tank on request.

Storage

Store in tightly closed, corrosion-resistant containers in a cool, ventilated place away from alkalis and metals. Phosphoric acid is corrosive.