Hypophosphorous acid

Hypophosphorous acid 50% solution is typically used in the electroplating industry where it acts as a wetting, emulsifying and dispersing agent. It can also be used as an acidifying compound, chemical reducing agent, anti-oxidant or catalyst in electroless nickel plating. It can also be used in the manufacturing of a variety of products spanning from washing and cleaning chemicals, to fillers and putties, to welding and soldering products. It can act as processing aid as bleaching agent, decolourizing agent or colour stabilizer. Can it be used as a laboratory chemical as well? -Yes!

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H₃PO₂

Details

Chemical Formula

H₃PO₂

REACH Registered by W&F

Yes

EC Number

228-601-5

CAS Number

6303-21-5

Industries

Surface treatment & Coatings
Industry chemicals
Home & Personal care

Applications

Electroless plating
Electroplating
Laboratory chemical
Processing aid
Intermediate

Specification

Assay (gravimetry): min. 50.0%
Phosphorous acid: ≤0.3%
Iron (Fe): ≤5 ppm
Chloride (Cl): ≤100 ppm
Sulphate: ≤100 ppm
Calcium (Ca): ≤100 ppm
Copper (Cu): ≤1 ppm
Arsenic (As): ≤1 ppm
Lead (Pb): ≤1 ppm
Antimony (Sb): ≤1 ppm
APHA colour/Hazen: ≤30

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