695076

Sigma-Aldrich

Formic acid

ACS reagent, ≥96%

Fórmula linear:
HCOOH
Número CAS:
Peso molecular:
46.03
Beilstein/REAXYS Number:
1209246
Número EC:
Número MDL:
ID de substância PubChem:
NACRES:
NA.21

Nível de qualidade

200

grau

ACS reagent

densidade de vapor

1.6 (vs air)

pressão de vapor

44.8 mmHg ( 20 °C)

teor

≥96%

forma

liquid

temperatura de autoignição

1004 °F

Lim. expl.

57 %

aplicação(ões)

sample preparation: suitable

índice de refração

n20/D 1.370 (lit.)

pH

2.2 (20 °C, 2.2  g/L)

pb

100-101 °C (lit.)

pf

8.2-8.4 °C (lit.)

solubilidade

water: miscible

densidade

1.22 g/mL at 25 °C (lit.)

traços de ânion

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

traços de cátion

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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Descrição geral

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).

Embalagem

100, 500 mL in poly bottle

Palavra indicadora

Danger

hazcat

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

Perigos de suplementos

EUH071

storage_class_code

3 - Flammable liquids

WGK Alemanha

WGK 1

Ponto de fulgor (ºF)

121.1 °F - closed cup

Ponto de fulgor (ºC)

49.5 °C - closed cup

Certificado de análise

Certificado de origem

Sarela García-Santamarina et al.
Nature protocols, 9(5), 1131-1145 (2014-04-20)
Reversible thiol oxidation of cysteine residues occurs in many intracellular catalytic and signaling processes. Here we describe an optimized protocol, which can be completed in ∼5 d, to unambiguously identify specific cysteine residues that are transiently and reversibly oxidized by...
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)
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)
Artigos
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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