phosphinic acid

• ChemBase ID: 127772
• Molecular Formular: H3O2P
• Molecular Mass: 65.996381
• Monoisotopic Mass: 65.98706597
• SMILES: O=PO
• Canonical SMILES: OP=O
• InChI: InChI=1S/HO2P/c1-3-2/h(H,1,2)
• InChIKey: GQZXNSPRSGFJLY-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: phosphinic acid
• IUPAC Traditional name: hypophosphorous acid
• Synonyms: Hydroxy(oxo)-λ^5-phosphane; Hydroxy-λ^5-phosphanone; Oxo-λ^5-phosphanol; Oxo-λ^5-phosphinous acid; Hypophosphorous acid; Hypophosphorous acid; Phosphinic acid; Phosphinic acid; Hypophosphorous acid solution; 次磷酸; 次膦酸; 卑磷酸; 次磷酸 溶液

Database IDs

• CAS Number: 6303-21-5
• EC Number: 228-601-5
• MDL Number: MFCD02183592
• PubChem SID: 162222090; 24852853
• PubChem CID: 22497; 3085127
• CHEBI ID: 29031
• Chemspider ID: 10449263
• KEGG ID: D02334
• Wikipedia Title: Hypophosphorous_acid

CALCULATED PROPERTIES

• Acid pKa: -4.0671873
• H Acceptors: 2
• H Donor: 1
• LogD (pH = 5.5): -2.8514
• LogD (pH = 7.4): -2.8514
• Log P: -0.5876
• Molar Refractivity: 9.2075 cm^3
• Polarizability: 4.0328 Å^3
• Polar Surface Area: 37.3 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: miscible in water; very soluble in alcohol, ether
• Apperance: colorless, deliquescent crystals or oily liquid
• Melting Point: 26.5°C
• Boiling Point: 130 °C decomp.
• Flash Point: Non-flammable
• Density: 1.206 g/mL at 20 °C(lit.); 1.206 g/mL at 25 °C; 1.493 g/cm^3
• Vapor Pressure: <17 mmHg ( 20 °C)
• pKa: 1.2

Safety Information

• European Hazard Symbols: Corrosive (C)
• UN Number: 3264; UN 3264
• German water hazard class: 3
• Hazard Class: 8
• Packing Group: 2
• Risk Statements: 34
• Safety Statements: 26-36/37/39-45
• EU Index: Not listed
• GHS Pictograms: GHS05
• GHS Signal Word: Danger
• GHS Hazard statements: H314
• GHS Precautionary statements: P280-P305 + P351 + P338-P310
• RID/ADR: UN 3264 8/PG 2

Product Information

• Purity: 49.5-50.5%
• Concentration: 30.0-32.0% in H2O; 50 wt. % in H2O
• Grade: SAJ first grade; technical
• Impurities: ≤0.005% heavy metals (as Pb)
• Cation Traces: Cu: ≤10 mg/kg; Fe: ≤50 mg/kg
• Antion Traces: chloride (Cl-): ≤500 mg/kg; sulfate (SO42-): ≤5000 mg/kg
• Linear Formula: H3PO2

DETAILS

Sigma Aldrich - 214906

Packaging
100, 500 g in poly bottle
4, 4×4 kg in poly bottle