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96499

Supelco

Isobutyric acid

certified reference material, TraceCERT®

Sinônimo(s):
2-Methylpropionic acid
Fórmula linear:
(CH3)2CHCO2H
Número CAS:
Peso molecular:
88.11
Beilstein:
635770
Número EC:
Número MDL:
ID de substância PubChem:
NACRES:
NA.24

Nível de qualidade

100

grau

certified reference material
TraceCERT®

densidade de vapor

3.04 (vs air)

pressão de vapor

1.5 mmHg ( 20 °C)

temperatura de autoignição

824 °F

prazo de validade

limited shelf life, expiry date on the label

Lim. expl.

10 %

condição de armazenamento

under inert gas

technique(s)

gas chromatography (GC): suitable

índice de refração

n20/D 1.393 (lit.)

pb

153-154 °C (lit.)

pf

−47 °C (lit.)

densidade

0.95 g/mL at 25 °C (lit.)

application(s)

cleaning products
cosmetics
food and beverages
personal care

formato

neat

temperatura de armazenamento

−20°C

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

This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025 and ISO 17034. This CRM is traceable to primary material from an NMI, e.g. NIST or NMIJ.
Certified content by quantitative NMR incl. uncertainty and expiry date are given on the certificate.
Download your certificate at: http://www.sigma-aldrich.com.

Informações legais

TraceCERT is a registered trademark of Sigma-Aldrich Co. LLC

Palavra indicadora

Danger

Classificações de perigo

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

Código de classe de armazenamento

3 - Flammable liquids

WGK

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

Tingxu Yan et al.
International journal of biological macromolecules, 144, 427-440 (2019-12-22)
The present study aimed to evaluate the antidepressant-like effect of a polysaccharide (OP), which is isolated from okra (Abelmoschus esculentus (L) Moench), in CUMS-induced mice and its possible mechanisms. OPT, FST and TST were employed to examine the anxiety and

Artigos

GC Analysis of C2-C7 Free Fatty Acids on Nukol™

Separation of Propionic acid; Acetic acid; Heptanoic acid; Isobutyric acid; Valeric acid; Isocaproic acid; Butyric acid; Isovaleric acid

GC Analysis of C2-C22 Free Fatty Acids on Nukol™

Separation of Methyl oleate; Caprylic acid; Heptanoic acid; Methyl decanoate; Methyl dodecanoate; Myristic acid; Methyl palmitate; Methyl palmitoleate; Methyl stearate; Methyl linoleate; Methyl linolenate; Acetic acid; Arachidic acid; Behenic acid; Propionic acid; Isobutyric acid; Valeric acid; Isovaleric acid; Isocaproic acid; Butyric acid

Protocolos

GC Analysis of Free Fatty Acids in Parmesan Cheese using Nukol™ after SPME using 65 μm Carbowax/DVB Fiber

In this study, SPME was used for the analysis of free fatty acids in Parmesan cheese using a 65 μm Carbowax/divinylbenzene (DVB) SPME fiber. Headspace extraction of the cheese sample was conducted at 65 °C for 15 minutes and analyzed by GC with FID detection. SPME is ideal for analyzing the volatiles associated with solid food samples. The phase chemistry of the Nukol GC column provides excellent peak shape of acidic compounds.

GC Analysis of Fermentation Compounds on a Packed Column (6.6% Carbowax® 20M on 80/120 Carbopack™ B AW)

Separation of Acetone; Acetic acid; Propionic acid; Ethyl butyrate; Ethanol; Isoamyl acetate; Isobutyric acid; 3-Methyl-2-butanol; Methyl acetate; 1-Propanol; Acetal, ≥98%, FG; 2-Methyl-1-pentanol; Butyl acetate; Ethyl propionate; 3-Pentanol; 2-Pentanol, 98%; Ethyl isobutyrate; Isobutyl acetate; Acetaldehyde; Furfural; Butyric acid; Methanol; Ethyl acetate

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