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04107 Sigma-Aldrich

Phosphoric acid

puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, 85.0-88.0%

Synonym: Orthophosphoric acid

  • CAS Number 7664-38-2

  • Linear Formula H3PO4

  • Molecular Weight 98.00

  •  Beilstein/REAXYS Number 1921286

  •  EC Number 231-633-2

  •  MDL number MFCD00011340

  •  PubChem Substance ID 329747880

  •  NACRES NA.21

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Properties

Related Categories Acids, Acids & Bases, Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography,
Quality Level   200
vapor density   3.4 (vs air)
vapor pressure   2.2 mmHg ( 20 °C)
  5 mmHg ( 25 °C)
InChI Key   NBIIXXVUZAFLBC-UHFFFAOYSA-N
grade   puriss.
assay   85.0-88.0%
quality   meets analytical specification of Ph. Eur., BP, NF, FCC
impurities   alkali phosphates, in accordance
  residual solvents, in accordance
  substance precip. by Ammonia, in accordance
  ≤0.0005% heavy metals (as Pb)
  ≤0.001% volatile acids (as CH3COOH)
bp   158 °C (lit.)
mp   ~40 °C (lit.)
density   1.685 g/mL at 25 °C (lit.)
anion traces   chloride (Cl-): ≤5 mg/kg
  fluoride (F-): ≤5 mg/kg
  nitrate (NO3-): ≤5 mg/kg
  nitrate (NO3-): in accordance
  phosphite, hypophosphite (as H3PO3): ≤30 mg/kg
  phosphite, hypophosphite (as H3PO3): in accordance
  sulfate (SO42-): ≤50 mg/kg
  sulfate (SO42-): in accordance
cation traces   As: ≤2 mg/kg
  Cd: ≤3 mg/kg
  Cu: ≤10 mg/kg
  Fe: ≤10 mg/kg
  Hg: ≤1 mg/kg
  Pb: ≤3 mg/kg
  Zn: ≤10 mg/kg
suitability   passes test for appearance of solution
Gene Information   human ... SRC(6714)

Description

Other Notes

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

Safety & Documentation

Safety Information

Symbol 
GHS05  GHS05
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 1805 8 / PGIII
WGK Germany 
1
Protocols & Articles

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