high quality inorganic Phosphorous Acid (PPA)

high quality inorganic Phosphorous Acid (PPA)

Quick Details

Classification: Phosphorous Acid
CAS No.: 13598-36-2
Other Names: PA; PPA;Phosphonic Acid; Hydrogen Phosphonate
EINECS No.: 237-066-7
Place of Origin: China (Mainland)
Grade Standard: Industrial Grade
Purity: 99% min.
Appearance: Colorless Crystals
Application: Industry
Model Number: Inorganic
Standard: HG/T2520-2006
Melting Point: 74℃
Boiling Point: 200℃ (Decomposes)
Density: 1.651 Kg/L (21.1℃)
Stability: Stable

Basic Information

Other Names: PA; PPA;Phosphonic Acid; Hydrogen Phosphonate ;Phosphorous Acid
Molecular Formula: H3PO3
Molecular Weight: 82.00
CAS NO.: 13598-36-2
EINECS NO.: 237-066-7
UN NO.: 2834
H.S. CODE NO.: 2811199090
Standard: HG/T2520-2006
Purity: 99% min.


Mainly used as a reducer, a nylon brightener, a plasticizer, a synthetic fiber, etc. in the plastic industry.
Also used to produce herbicides, bactericides and water quality stabilizers in the organo phosphorus pesticide industry.
Also used to produce high performance water treating agent ATMP.

Product Parameters

Guaranteed Specification
Testing Results
Main content(based on H3PO3)
99% min
Chloride (Cl)
Iron (Fe)
0.005% max.
Sulphate (SO4)
0.001% max.
Phosphate (PO4)
0.3% max.
White Crystal
White Crystal
Without smell
Without smell

Our Service

Quality Assurance
Third party testing
Routine vendor audit, approval and annual evaluation
Complete traceability of all shipments
Sample retention of 1 year
Copliance with the international standard (USP,EP ,etc.)

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