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695076

Sigma-Aldrich

Formic acid

ACS reagent, ≥96%

Fórmula lineal:
HCOOH
Número de CAS:
Peso molecular:
46.03
Beilstein:
1209246
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

grade

ACS reagent

vapor density

1.6 (vs air)

vapor pressure

44.8 mmHg ( 20 °C)

assay

≥96%

form

liquid

autoignition temp.

1004 °F

expl. lim.

57 %

application(s)

sample preparation: suitable

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.)

solubility

water: miscible

density

1.22 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.003%
sulfite (SO32-): passes test

cation traces

Fe: ≤0.001%
NH4+: ≤0.005%
heavy metals (as Pb): ≤0.001%

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 the simplest carboxylic acid. Crystal structure study by single-crystal X-ray diffraction technique at -50°C has shown that it has an orthorhombic structure with space group Pna. The photodegradation of formic acid has been investigated using ab intio calculations and time-resolved Fourier transform infrared spectroscopy. Its utility as a fuel in direct fuel cells has been studied. The momentum distribution for its monomer have been evaluated by electron momentum spectroscopy (EMS).

Packaging

100, 500 mL in poly bottle

signalword

Danger

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 Germany

WGK 1

Flash Point F

121.1 °F - closed cup

Flash Point C

49.5 °C - closed cup

Certificado de Análisis

Certificado de origen

Electron momentum spectroscopy of formic acid.
Nixon KL, et al.
Chemical Physics Letters, 474(1), 23-27 (2009)
Direct formic acid fuel cells.
Rice C, et al.
Journal of Power Sources, 111(1), 83-89 (2002)
Photodissociation of formic acid.
Su H, et al.
J. Chem. Phys. , 113(5), 1891-1897 (2000)
The crystal structure of formic acid.
Holtzberg F, et al.
Acta Crystallographica, 6(2), 127-130 (1953)
Switchgrass pretreatment and hydrolysis using low concentrations of formic acid.
Marzialetti T, et al.
Journal of Chemical Technology and Biotechnology, 86(5), 706-713 (2011)

Artículos

Development of a Simple and Rapid Digestion Protocol for Proteomics Sample Preparation

In this study, we developed a rapid trypsin digest kit that, at elevated temperatures, yielded reliable, reproducible results in less than 2 hours on a wide variety of substrates for mass spectrometry.

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