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Phosphorous acid, 97%, Thermo Scientific Chemicals

Catalog Number AA89407A3
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500 g
2 kg
Phosphonic acid
Phosphonic acid

Phosphorus acid is used as an intermediate in the preparation of other phosphorus compounds like potassium phosphite, ammonium phosphite and calcium phosphite. It is actively involved in the preparation of phosphites like aminotris(methylenephosphonic acid) (ATMP), 1-hydroxyethane 1,1-diphosphonic acid (HEDP) and 2-phosphonobutane-1,2,4-tricarboxylic Acid (PBTC), which find application in water treatment as a scale or corrosive inhibitor. It is also used in chemical reactions as a reducing agent. Its salt, lead phosphite is used as PVC stabilizer. It is also used as a precursor in the preparation of phosphine and as an intermediate in the preparation of other phosphorus compounds.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Melting Point 74°C
Boiling Point 200°C (decomposition)
Density 1.651 g/mL
Odor Odorless
Sensitivity Air sensitive; Hygroscopic
Assay Percent Range 97%
Quantity 2 kg
Physical Form Crystalline
UN Number UN2834
Merck Index 14,7346
Solubility Information Soluble in water and alcohol.
Formula Weight 82
Percent Purity 97%
Chemical Name or Material Phosphorous acid
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GHS H Statement
Causes severe skin burns and eye damage.
Causes serious eye damage.
Harmful if swallowed.

DOTInformation Transport Hazard Class: 8; Packing Group: III; Proper Shipping Name: PHOSPHOROUS ACID
EINECSNumber 237-066-7
RTECSNumber SZ6400000
Recommended Storage Ambient temperatures



RUO – Research Use Only

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