Phosphorous Acid/PA
Phosphorous acid is the compound described by the formula H3PO3. This acid is diprotic (readily ionizes two protons), not triprotic as might be suggested by this formula. Phosphorous acid is an intermediate in the preparation of other phosphorus compounds.
H3PO3 is more clearly described with the structural formula HPO(OH)2. In the solid state, HP(O)(OH)2 is tetrahedral with one shorter P=O bond of 148 pm and two longer P–O(H) bonds of 154 pm. This species exists in equilibrium with an extremely minor tautomer P(OH)3. IUPAC recommends that the latter be called phosphorous acid, whereas the dihydroxy form is called phosphonic acid. Only the reduced phosphorus compounds are spelled with an "ous" ending.
Other important oxyacids of phosphorus are phosphoric acid (H3PO4) and hypophosphorous acid (H3PO2). The reduced phosphorus acids are subject to similar tautomerism involving shifts of H between O and P.
EINECS NO: 237-066-7
Molecular weight: 81.9957
Packing: 25kg/woven bag
Description: White crystalline powder
Send product request
Other supplier products
 |
3,4-dimethylpyrazole Phosphate/DMPP | 3,4-Dimethylpyrazole(phosphate)(3,4-DMPP) is an inhibitor of nitrification deemed safe by extensive standard toxicology and ecotoxicology tests. 1... |
 |
D-isoascorbic Acid | D-isoascorbic acid(isoascorbic acid, D-araboascorbic acid, (D-)erythroascorbic acid) is a stereoisomer of ascorbic acid (vitamin C), A reaction bet... |
 |
N-(N-butyl)thiophosphoric triamide/NBPT | NBPT is the most effective inhibitor of soil urease. Positive butyl thiophosphoric triamide as inhibitors of soil urease, efficient, non-toxic, on ... |
 |
（N-butyl)thiophosphoric triamide/NBPT | Urease inhibitor is a kind of substance that can inhibit the activity of soil urease, and it is a new technology which has been studied in urea or ... |
 |
Monopotassium Phosphite | Monopotassium phosphite is an inorganic compound with the formula KH2PO3. Potassium dihydrogen phosphite cas numberis 13977-65-6. A compositionally... |
Same products
 |
Hot Melt Adhesive for Vacuum Insulation Panels | Seller: Foshan Rurga New Material Technology Co. ,Ltd | Hot Melt Adhesive for Vacuum Insulation Panels Supply & Technical Support Capabilities ... |
 |
Hot Melt Adhesive for Packaging | Seller: Foshan Rurga New Material Technology Co. ,Ltd | Hot Melt Adhesive for Packaging Bond Strength & Durability: Hot melt adhesives provide i... |
 |
Hot Melt Adhesive for Hygiene Products | Seller: Foshan Rurga New Material Technology Co. ,Ltd | Hot Melt Adhesive for Hygiene Products refers to thermoplastic pressure‑sensitive adhesives ... |
 |
LSAW Steel Pipe & Tube | Seller: HEBEI TIRICO PIPELINE CO.,LTD | LSAW Steel Pipe & Tube , or Longitudinal Submerged Arc-Welding Pipe (also known as SAWL ... |
 |
Anti-Corrosion Steel Pipe & Tube | Seller: HEBEI TIRICO PIPELINE CO.,LTD | Anti-Corrosion Steel Pipe & Tube Anti-Corrosion Steel Pipe & Tube What Is an Anti... |
