33015

Sigma-Aldrich

Formic acid

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

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

Quality Level

grade

ACS reagent
puriss. p.a.

Agency/Method

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 %

application(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

Supp Hazards

EUH071

RIDADR

UN 1779 3(8) / PGII

WGK Germany

WGK 1

Flash Point(F)

121.1 °F - closed cup

Flash Point(C)

49.5 °C - closed cup

Certificate of Analysis

Certificate of Origin

Crossover of formic acid through Nafion membranes.
Rhee Y-W, et al.
Journal of Power Sources, 117(1), 35-38 (2003)
Elastic electron scattering from formic acid (HCOOH): absolute differential cross-sections.
Vizcaino V, et al.
New Journal of Physics, 8(6), 85-85 (2006)
Heng Lu et al.
Cell communication insights, 5, 1-7 (2014-05-20)
Protein-protein interactions play a pivotal role in both inter- and intra-cellular signaling. Identification of signaling protein complexes can thus shed important new insights into cell communications. We developed a parallel affinity precipitation protocol to overcome the disadvantages of the tandem...
Yoann Rombouts et al.
Annals of the rheumatic diseases, 74(1), 234-241 (2013-10-10)
To determine whether anticitrullinated protein antibodies (ACPA) exhibit specific changes in Fc glycosylation prior to the onset of arthritis. Serum samples of patients with ACPA-positive arthralgia (n=183) were collected at baseline and at various time points of follow-up. 105 patients...
Tasqiah Julianti et al.
Journal of ethnopharmacology, 155(1), 426-434 (2014-06-04)
Leaf decoctions of Carica papaya have been traditionally used in some parts of Indonesia to treat and prevent malaria. Leaf extracts and fraction have been previously shown to possess antiplasmodial activity in vitro and in vivo. Antiplasmodial activity of extracts...

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