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Merck

W310204

Sigma-Aldrich

Isovaleric acid

≥99%, FCC, FG

Sinónimos:

3-Methylbutanoic acid, 3-Methylbutyric acid

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About This Item

Fórmula lineal:
(CH3)2CHCH2COOH
Número de CAS:
Peso molecular:
102.13
FEMA Number:
3102
Beilstein/REAXYS Number:
1098522
EC Number:
Council of Europe no.:
8
MDL number:
UNSPSC Code:
12164502
PubChem Substance ID:
Flavis number:
8.008
NACRES:
NA.21

biological source

synthetic

Quality Level

grade

FG
Halal

agency

meets purity specifications of JECFA

reg. compliance

EU Regulation 1334/2008 & 872/2012
FCC
FDA 21 CFR 172.515

vapor pressure

0.38 mmHg ( 20 °C)

assay

≥99%

autoignition temp.

824 °F

refractive index

n20/D 1.403 (lit.)

bp

175-177 °C (lit.)

mp

−29 °C (lit.)

density

0.925 g/mL at 20 °C (lit.)

application(s)

flavors and fragrances

documentation

see Safety & Documentation for available documents

food allergen

no known allergens

organoleptic

cheese; fatty; acidic; sour

SMILES string

CC(C)CC(O)=O

InChI

1S/C5H10O2/c1-4(2)3-5(6)7/h4H,3H2,1-2H3,(H,6,7)

InChI key

GWYFCOCPABKNJV-UHFFFAOYSA-N

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General description

Isovaleric acid is the main volatile flavor constituent of Swiss cheese and beer. It has been identified as the key odor-active compound responsible for "Brett" flavor in wine.

pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class

8A - Combustible corrosive hazardous materials

wgk_germany

WGK 1

flash_point_f

176.0 °F - Pensky-Martens closed cup

flash_point_c

80 °C - Pensky-Martens closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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Certificados de análisis (COA)

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Visite la Librería de documentos

Isovaleric acid is mainly produced by Propionibacterium freudenreichii in Swiss cheese.
Thierry A, et al.
International dairy journal, 14(9), 801-807 (2004)
The flavour of beer?a review.
Journal of the Institute of Brewing, 76(5), 486-495 (1970)
What is" Brett"(Brettanomyces) flavor?: A preliminary investigation.
ACS Symp. Ser., 714, 96?115-96?115 (1998)
Haiyan Wu et al.
Journal of hazardous materials, 172(1), 196-201 (2009-08-01)
The effect of pH in the range of 3.0-11.0 on anaerobic fermentation of primary sludge (PS) was investigated at room temperature. The experimental results showed that the concentrations of soluble chemical oxygen demands (SCOD), soluble protein and carbohydrate and short-chain
Wolfgang R Mukabana et al.
Journal of chemical ecology, 38(3), 235-244 (2012-03-20)
Estimating the biting fraction of mosquitoes is of critical importance for risk assessment of malaria transmission. Here, we present a novel odor-based tool that has been rigorously assessed in semi-field assays and traditional African villages for estimating the number of

Artículos

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

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

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.

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