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33015 Sigma-Aldrich

Formic acid

puriss. p.a., ACS reagent, reag. Ph. Eur., ≥98%

  • CAS Number 64-18-6

  • Linear Formula HCOOH

  • Molecular Weight 46.03

  •  Beilstein/REAXYS Number 1209246

  •  EC Number 200-579-1

  •  MDL number MFCD00003297

  •  PubChem Substance ID 329754437

  •  NACRES NA.21

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Properties

Related Categories Acids, Acids & Bases, Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography,
grade   ACS reagent, reag. Ph. Eur.
vapor density   1.6 (vs air)
vapor pressure   44.8 mmHg ( 20 °C)
InChI Key   BDAGIHXWWSANSR-UHFFFAOYSA-N
grade   puriss. p.a.
assay   ≥98%
autoignition temp.   1004 °F
expl. lim.   57 %
impurities   ≤0.001% ammonium (NH4)
  ≤0.001% non-volatile matter
  ≤0.005% acetic acid (CH3COOH)
refractive index   n20/D 1.370 (lit.)
bp   100-101 °C (lit.)
mp   8.2-8.4 °C (lit.)
density   1.22 g/mL at 25 °C (lit.)
anion traces   chloride (Cl-): ≤5 mg/kg
  oxalate (C2O42-): ≤50 mg/kg
  sulfate (SO42-): ≤5 mg/kg
  sulfite (SO32-): ≤10 mg/kg
cation traces   Ag: ≤0.02 mg/kg
  Al: ≤0.05 mg/kg
  Ba: ≤0.05 mg/kg
  Be: ≤0.02 mg/kg
  Bi: ≤0.1 mg/kg
  Ca: ≤0.2 mg/kg
  Cd: ≤0.05 mg/kg
  Co: ≤0.02 mg/kg
  Cr: ≤0.05 mg/kg
  Cu: ≤0.02 mg/kg
  Fe: ≤2 mg/kg
  Ge: ≤0.05 mg/kg
  K: ≤0.1 mg/kg
  Li: ≤0.02 mg/kg
  Mg: ≤0.5 mg/kg
  Mn: ≤0.05 mg/kg
  Mo: ≤0.02 mg/kg
  Na: ≤0.5 mg/kg
  Ni: ≤0.05 mg/kg
  Pb: ≤0.02 mg/kg
  Sr: ≤0.02 mg/kg
  Ti: ≤0.1 mg/kg
  Tl: ≤0.05 mg/kg
  V: ≤0.05 mg/kg
  Zn: ≤0.05 mg/kg
  Zr: ≤0.1 mg/kg

Description

General description

Formic acid is a simple organic acid. Formate group (-COOH) plays an important role to compose the complex biomolecules (acetic acid, glycine, various amino acids). It exhibits high polarity and its dipole moment is 1.41Debye. It has been reported as a substiute for fuel in polymer electrolyte membrane (PEM) fuel cells. Its permeation through Nafion® 112 and 117 membranes has been compared with that of methanol.

Application

Formic acid has been used to evaluate its first absolute differential elastic electron scattering cross-sections and angular differential cross-sections (incident electron energies in the range of 1.8 and 50eV). It may be used in the preparation of HPLC buffer for mass spectrometric studies.

Legal Information

Nafion is a registered trademark of The Chemours Company FC, LLC

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Supplemental Hazard Statements 
Corrosive to the respiratory tract.
RIDADR 
UN 1779 3(8) / PGII
WGK Germany 
1
RTECS 
LQ4900000
Flash Point(F) 
120.2 °F
Flash Point(C) 
49 °C

Documents

Certificate of Analysis

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Protocols & Articles

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Peer-Reviewed Papers
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References

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