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Phosphorus acid (H3PO3) is an oxyacid of phosphorus. Phosphorous acid is also a conjugate acid of dihydrogen phosphite. This colorless compound is also given the name trihydroxy phosphorous acid since it contains three hydroxyl groups.
Phosphorus acid chemical formula is H3PO3 .The name is phosphorus acid. is a tribasic acid with one phosphorus, four oxygen, and three hydrogen atoms. And the basicity of phosphoric acid is 3 since it contains three acidic hydrogen atoms.
Phosphorous acid is a chemical substance that is used to make other phosphorus compounds.
Phosphorous acid appears as a white or yellow crystalline solid (melting point 70.1 deg C) or a solution of the solid.
Density 1.651 g /cm3 .
Contact may severely irritate skin, eyes, and mucous membranes. Toxic by ingestion, inhalation and skin absorption.
GHS Hazard and Precautionary Statements
Hazard Statements: H290-H302-H314
May be corrosive to metals. Harmful if swallowed. Causes severe skin burns and eye damage.
Precautionary Statements: P264b-P270-P271-P280-P304+P340-P305+P351+P338-P310-P330-P331-P363-P390-P402-P403+P233-P406b-P501c
Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Rinse mouth. Do NOT induce vomiting. Wash contaminated clothing before reuse. Absorb spillage to prevent material damage. Store in a dry place. Store in a well-ventilated place. Keep container tightly closed. Store in corrosive resistant polypropylene container with a resistant inliner Dispose of contents/ container to an approved waste disposal plant
DIHYDROXYPHOSPHINE OXIDE, O-PHOSPHOROUS ACID, PHOSPHONIC ACID, PHOSPHOROUS ACID, PHOSPHOROUS ACID, ORTHO
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