79617

Phosphoric acid

BioUltra, ≥85% (T)

• Synonym(s): Orthophosphoric acid
• Linear Formula: H₃PO₄
• CAS Number: 7664-38-2
• Molecular Weight: 98.00
• Beilstein: 1921286
• EC Number: 231-633-2
• MDL number: MFCD00011340
• UNSPSC Code: 12352301
• PubChem Substance ID: 57652809
• NACRES: NA.26

Properties

• vapor density: 3.4 (vs air)
• vapor pressure: 2.2 mmHg ( 20 °C); 5 mmHg ( 25 °C)
• product line: BioUltra
• Assay: ≥85% (T)
• form: viscous liquid
• impurities: insoluble matter, passes filter test; ≤0.001% KMnO₄-reducing matter (as O); ≤0.001% volatile acids (as CH₃COOH)
• refractive index: n20/D 1.433
• bp: 158 °C (lit.)
• mp: ~40 °C (lit.)
• solubility: H₂O: 1 M at 20 °C, clear, colorless
• density: 1.685 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤2 mg/kg; fluoride (F^-): ≤1 mg/kg; nitrate (NO₃^-): ≤5 mg/kg; phosphite, hypophosphite (as H₃PO₃): ≤50 mg/kg; sulfate (SO₄^2-): ≤30 mg/kg
• cation traces: Ag: ≤1 mg/kg; Al: ≤1 mg/kg; As: ≤0.5 mg/kg; Ba: ≤1 mg/kg; Bi: ≤1 mg/kg; Ca: ≤10 mg/kg; Cd: ≤1 mg/kg; Co: ≤1 mg/kg; Cr: ≤1 mg/kg; Cu: ≤1 mg/kg; Fe: ≤10 mg/kg; K: ≤5 mg/kg; Li: ≤1 mg/kg; Mg: ≤1 mg/kg; Mn: ≤1 mg/kg; Mo: ≤1 mg/kg; Na: ≤20 mg/kg; Ni: ≤1 mg/kg; Pb: ≤1 mg/kg; Sb: ≤2 mg/kg; Sr: ≤1 mg/kg; Tl: ≤1 mg/kg; Zn: ≤1 mg/kg
• SMILES string: OP(O)(O)=O
• λ: 1 M in H₂O
• UV absorption: λ: 260 nm A_max: ≤0.05; λ: 280 nm A_max: ≤0.04
• InChI: 1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)
• InChI key: NBIIXXVUZAFLBC-UHFFFAOYSA-N
• Gene Information: human ... SRC(6714)

Description

Application

Phosphoric acid has been used in the preparation of anolyte, a constituent of the capillary isoelectric focusing (CIEF) solutions. It has also been used as a chemical oxidation reagent in flow injection analysis-chemical oxidation-isotope ratio mass spectrometry (FIA-CO-IRMS).

Other Notes

Concentrated phosphoric acid is approx. 85% H₃PO₄ (aqueous).

Caution

product may become solid; becomes liquid on heating to 50°C.

Safety Information

• Pictograms: GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H290,H302,H314
• Precautionary Statements: P234 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B
• Storage Class Code: 8A - Combustible corrosive hazardous materials
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves