Specification of Phosphoric Acid

CAS No.

7664-38-2

EINECS No.

231-633-2

Formula  

H3PO4

Mol Wt.

97.99

H.S.Code   

2809.10

Physical and Chemical Properties

Physical State  

Clear syrupy liquid

Melting Point

41 °C

Boiling Point

158 °C

Specific Gravity

1.69

Solubility In Water

Miscible

PH

1.5 (0.1 N aqueous sol.) 

Viscosity

3.86 mPa at 20 C

Vapor Density

3.4

Flash Point  

Not considered to be a fire hazard

Stability

Stable under ordinary conditions.

Grade

75%

85%

89%

Content (H3PO4)

75.0% min

85.0% min

89.0% min

Cl   

0.0005% max

Specific Gravity

1.575 min

1.675 min

1.725 min

Color APHA      

 30 max