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33015

Sigma-Aldrich

Formic acid

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

Linear Formula:
HCOOH
CAS Number:
Molecular Weight:
46.03
Beilstein:
1209246
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent
puriss. p.a.

Agency

reag. Ph. Eur.

vapor density

1.6 (vs air)

vapor pressure

44.8 mmHg ( 20 °C)

assay

≥98%

form

liquid

autoignition temp.

1004 °F

expl. lim.

57 %

technique(s)

mass spectrometry (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

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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

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1A

Supplementary Hazards

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

121.1 °F - closed cup

Flash Point(C)

49.5 °C - closed cup

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

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