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58360

Sigma-Aldrich

Isobutyric acid

puriss. p.a., ≥99.5%

Sinonimo/i:

2-Methylpropionic acid

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About This Item

Formula condensata:
(CH3)2CHCO2H
Numero CAS:
Peso molecolare:
88.11
Beilstein:
635770
Numero CE:
Numero MDL:
Codice UNSPSC:
12352100
ID PubChem:
NACRES:
NA.22

Densità del vapore

3.04 (vs air)

Livello qualitativo

Tensione di vapore

1.5 mmHg ( 20 °C)

Grado

puriss. p.a.

Saggio

≥99.5% (GC)
≥99.5%

Temp. autoaccensione

824 °F

Limite di esplosione

10 %

Impurezze

≤0.2% water

Indice di rifrazione

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

P. eboll.

153-154 °C (lit.)

Punto di fusione

−47 °C (lit.)

Densità

0.95 g/mL at 25 °C (lit.)

Cationi in tracce

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

Stringa SMILE

CC(C)C(O)=O

InChI

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

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Descrizione generale

Isobutyric acid can be prepared via the carbonylation of propylene.

Applicazioni

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

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

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

Codice della classe di stoccaggio

3 - Flammable liquids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

131.0 °F - closed cup

Punto d’infiammabilità (°C)

55 °C - closed cup


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Lee YK, et al.
Catalysis Today, 33(1-3), 183-189 (1997)
E M Faed et al.
Clinical and experimental pharmacology & physiology, 5(2), 195-198 (1978-03-01)
1. Two main conjugates of CPIB (2-[chlorophenoxy]-2-methylpropionic acid) are present in the urine of subjects taking clofibrate. The metabolites can be separated by thin-layer chromatography (TLC). 2. Both conjugates are hydrolysed by dilute alkali, but only one is hydrolysed by
A Vyalikh et al.
Physical chemistry chemical physics : PCCP, 9(18), 2249-2257 (2007-05-10)
Solid state deuterium NMR has been used to study the molecular motion of d(6)-isobutyric acid (d(6)-iBA) in the pure (unconfined) state and confined in the cylindrical pores of two periodic mesoporous silica materials (MCM-41, pore size 3.3 nm and SBA-15
Nicoletta Beffagna et al.
Journal of experimental botany, 58(15-16), 4183-4194 (2007-11-28)
In Arabidopsis thaliana cells, fusicoccin (FC) treatment induced an early and marked increase in the extracellular H(2)O(2) level. It also increased the huge hypo-osmotic stress-induced oxidative wave and, in addition, prevented the H(2)O(2) peak drop. These effects were apparently not
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Molecular vision, 17, 395-403 (2011-02-12)
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