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Phosphorous acid, 98+%

Product Code. 11423494
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Product Code. 11423494 Supplier Thermo Scientific Alfa Aesar Supplier No. A11189.0I
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Description

CAS: 13598-36-2 | H3PO3

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 precursor in the preparation of phosphine as well 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.

Applications
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 precursor in the preparation of phosphine as well as an intermediate in the preparation of other phosphorus compounds.

Solubility
Soluble in water and alcohol.

Notes
Air sensitive. Hygroscopic. Incompatible with strong bases, oxidizing agents and metals.
TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 13598-36-2
Molecular Formula H3PO3
MDL Number MFCD00137258
Synonym Phosphonic acid

Specifications

Melting Point 74°C
Boiling Point 200°C (decomposition)
Density 1.651
Odor Odorless
Sensitivity Hygroscopic
Quantity 5000 g
UN Number UN2834
Merck Index 14,7346
Solubility Information Soluble in water and alcohol.
Formula Weight 82
Percent Purity ≥98%
Chemical Name or Material Phosphorous acid
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