58360

Sigma-Aldrich

Isobutyric acid

puriss. p.a., ≥99.5%

Sinônimo(s):
2-Methylpropionic acid
Fórmula linear:
(CH3)2CHCO2H
Número CAS:
Peso molecular:
88.11
Beilstein/REAXYS Number:
635770
Número EC:
Número MDL:
ID de substância PubChem:
NACRES:
NA.22

Nível de qualidade

200

densidade de vapor

3.04 (vs air)

pressão de vapor

1.5 mmHg ( 20 °C)

grau

puriss. p.a.

teor

≥99.5% (GC)
≥99.5%

temperatura de autoignição

824 °F

Lim. expl.

10 %

Impurezas

≤0.2% water

índice de refração

n20/D 1.393 (lit.)
n20/D 1.393

pb

153-154 °C (lit.)

pf

−47 °C (lit.)

densidade

0.95 g/mL at 25 °C (lit.)

traços de cátion

Al: ≤0.5 mg/kg
Ba: ≤0.1 mg/kg
Bi: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.05 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.02 mg/kg
Cu: ≤0.02 mg/kg
Fe: ≤0.1 mg/kg
K: ≤0.5 mg/kg
Li: ≤0.1 mg/kg
Mg: ≤0.1 mg/kg
Mn: ≤0.02 mg/kg
Mo: ≤0.1 mg/kg
Na: ≤2 mg/kg
Ni: ≤0.02 mg/kg
Pb: ≤0.1 mg/kg
Sr: ≤0.1 mg/kg
Zn: ≤0.1 mg/kg

SMILES string

CC(C)C(O)=O

InChI

1S/C4H8O2/c1-3(2)4(5)6/h3H,1-2H3,(H,5,6)

InChI key

KQNPFQTWMSNSAP-UHFFFAOYSA-N

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Descrição geral

Isobutyric acid can be prepared via the carbonylation of propylene.

Aplicação

Isobutyric acid may be used to synthesize methacrylic acid via oxidative dehydrogenation in the presence of a suitable heteropolyacid as catalyst.

Palavra indicadora

Danger

hazcat

Acute Tox. 3 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B

storage_class_code

3 - Flammable liquids

WGK Alemanha

WGK 1

Ponto de fulgor (ºF)

131.0 °F - closed cup

Ponto de fulgor (ºC)

55 °C - closed cup

Certificado de análise

Certificado de origem

"Acidic cesium salts of molybdovanadophosphoric acids as efficient catalysts for oxidative dehydrogenation of isobutyric acid"
Lee YK, et al.
Catalysis Today, 33(1-3), 183-189 (1997)
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The Journal of pharmacology and experimental therapeutics, 330(3), 911-921 (2009-06-09)
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Maria V Abramova et al.
The Journal of biological chemistry, 281(30), 21040-21051 (2006-05-24)
Tumor cells are often characterized by a high and growth factor-independent proliferation rate. We have previously shown that REF cells transformed with oncogenes E1A and c-Ha-Ras do not undergo G(1)/S arrest of the cell cycle after treatment with genotoxic factors....
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Molecular vision, 17, 395-403 (2011-02-12)
Histone deacetylase inhibitors (HDACi) have neuroprotective effects under various neurodegenerative conditions, e.g., after optic nerve crush (ONC). HDACi-mediated protection of central neurons by increased histone acetylation has not previously been demonstrated in rat retinal ganglion cells (RGCs), although epigenetic changes...
Kimberlee S Mix et al.
Molecular pharmacology, 65(2), 309-318 (2004-01-27)
Matrix metalloproteinases (MMPs) degrade extracellular matrix components, and overexpression of these enzymes contributes to tissue destruction in arthritis. Of particular importance are the collagenases, MMP-1 and MMP-13, which have high activity against the interstitial collagens in cartilage. In this study...
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Protocolos
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