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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,
Quality Level   200
grade   ACS reagent
Agency/Method   reag. Ph. Eur.
vapor density   1.6 (vs air)
vapor pressure   44.8 mmHg ( 20 °C)
grade   puriss. p.a.
assay   ≥98%
form   liquid
autoignition temp.   1004 °F
expl. lim.   57 %
application(s)   mass spectroscopy (MS): suitable
impurities   ≤0.001% ammonium (NH4)
  ≤0.001% non-volatile matter
  ≤0.005% acetic acid (CH3COOH)
refractive index   n20/D 1.370 (lit.)
pH   2.2 (20 °C, 2.2  g/L)
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
SMILES string   OC=O
InChI   1S/CH2O2/c2-1-3/h1H,(H,2,3)
InChI key   BDAGIHXWWSANSR-UHFFFAOYSA-N

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.

Other Notes

The article number 33015-4X2.5L will be discontinued. Please order the single bottle 33015-2.5L which is physically identical with the same exact specifications.
The article number 33015-4X2.5L-M will be discontinued. Please order the single bottle 33015-2.5L-M which is physically identical with the same exact specifications.
The article number 33015-6X1L-M will be discontinued. Please order the single bottle 33015-1L-M which is physically identical with the same exact specifications.

Legal Information

Nafion is a trademark of The Chemours Company FC, LLC

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Supplemental Hazard Statements 
EUH071
RIDADR 
UN 1779 3(8) / PGII
WGK Germany 
WGK 1
RTECS 
LQ4900000
Flash Point(F) 
121.1 °F - closed cup
Flash Point(C) 
49.5 °C - closed cup
Protocols & Articles

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