Phosphorous acid, 98+%, Thermo Scientific Chemicals

Description

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.

Specifications

• Melting Point: 74°C
• Boiling Point: 200°C (decomposition)
• Density: 1.651
• Odor: Odorless
• Sensitivity: Hygroscopic
• Quantity: 250 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

Safety and Handling

Hazard Category	H290-H302-H314-H335
Hazard Statement	GHS H Statement H314-H318-H302 Causes severe skin burns and eye damage. Causes serious eye damage. Harmful if swallowed.
Precautionary Statement	P234-P260-P264b-P270-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P390-P501c
DOTInformation	Transport Hazard Class: 8; Packing Group: III; Proper Shipping Name: PHOSPHOROUS ACID
EINECSNumber	237-066-7
RTECSNumber	SZ6400000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only