phosphinic acid

• ChemBase ID: 156665
• Molecular Formular: HO2P
• Molecular Mass: 63.980501
• Monoisotopic Mass: 63.9714159
• SMILES: O[P]=O
• Canonical SMILES: O[P]=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: Phosphinic acid; Hypophosphorous acid; Hypophosphorous acid; Phosphinic acid; 次磷酸; 次磷酸; 次膦酸

Database IDs

• CAS Number: 6303-21-5
• EC Number: 228-601-5
• MDL Number: MFCD02183592
• PubChem SID: 24845738; 24844926; 162250802
• PubChem CID: 22497

CALCULATED PROPERTIES

• Acid pKa: 2.5488303
• H Acceptors: 2
• H Donor: 1
• LogD (pH = 5.5): -3.4227495
• LogD (pH = 7.4): -3.5022845
• Log P: -1.2396
• Molar Refractivity: 10.8075 cm^3
• Polarizability: 4.681278 Å^3
• Polar Surface Area: 37.3 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Apperance: Liquid
• Density: 1.206 g/mL at 20 °C(lit.); 1.210 g/mL at 20 °C; 1.225

Safety Information

• European Hazard Symbols: Corrosive (C)
• UN Number: 3264; UN3264
• German water hazard class: 3
• Hazard Class: 8
• Packing Group: 2; II
• Risk Statements: 34
• Safety Statements: 20-23-26-27-36/37/39-45-60; 26-36/37/39-45
• TSCA Listed: 是
• GHS Pictograms: GHS05
• GHS Signal Word: Danger
• GHS Hazard statements: H314
• GHS Precautionary statements: P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A; P280-P305 + P351 + P338-P310
• Personal Protective Equipment: Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
• RID/ADR: UN 3264 8/PG 2

Product Information

• Purity: ~50% (T); ≥60%; 30-32%; 50% w/w aq. soln.
• Grade: puriss.; puriss. p.a.; purum
• Impurities: ≤0.002% heavy metals (as Pb); ≤0.02% total sulfur (as SO4)
• Cation Traces: As: ≤0.5 mg/kg; As: ≤1 mg/kg; As: ≤2 mg/kg; Ba: ≤50 mg/kg; Ca: ≤50 mg/kg; Cd: ≤1 mg/kg; Co: ≤1 mg/kg; Cr: ≤1 mg/kg; Cu: ≤1 mg/kg; Cu: ≤5 mg/kg; Fe: ≤10 mg/kg; Fe: ≤20 mg/kg; K: ≤10 mg/kg; Mg: ≤10 mg/kg; Mn: ≤1 mg/kg; Na: ≤1000 mg/kg; Na: ≤500 mg/kg; Ni: ≤1 mg/kg; Pb: ≤1 mg/kg; Zn: ≤1 mg/kg
• Antion Traces: chloride (Cl-): ≤200 mg/kg; phosphate, phosphite (as H3PO4): ≤1%; sulfate (SO42-): ≤200 mg/kg; sulfate (SO42-): ≤500 mg/kg
• Quality: meets analytical specification of NF
• Linear Formula: H3PO2

DETAILS

Sigma Aldrich - 94210

Application
Reducing agent; used e.g. for the replacement of the diazonium group by hydrogen