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Key Documents

78651

Supelco

Isovaleric acid

analytical standard

Sinonimo/i:

3-Methylbutanoic acid, 3-Methylbutyric acid

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About This Item

Formula condensata:
(CH3)2CHCH2COOH
Numero CAS:
Peso molecolare:
102.13
Beilstein:
1098522
Numero CE:
Numero MDL:
Codice UNSPSC:
85151701
ID PubChem:
NACRES:
NA.24

Grado

analytical standard

Livello qualitativo

Tensione di vapore

0.38 mmHg ( 20 °C)

Saggio

≥98.5% (GC)

Temp. autoaccensione

824 °F

Durata

limited shelf life, expiry date on the label

tecniche

HPLC: suitable
gas chromatography (GC): suitable

Impurezze

≤0.3% water

Indice di rifrazione

n20/D 1.402-1.404
n20/D 1.403 (lit.)

P. eboll.

175-177 °C (lit.)

Punto di fusione

−29 °C (lit.)

Densità

0.925 g/mL at 20 °C (lit.)

applicazioni

cleaning products
cosmetics
flavors and fragrances
food and beverages
personal care

Formato

neat

Stringa SMILE

CC(C)CC(O)=O

InChI

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

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Applicazioni

Isovaleric acid may be used as an analytical reference standard for the quantification of the analyte in the following:
  • Rose apple (Syzygium jambos Alston) fruit using gas chromatography with flame ionization detection (GC-FID), mass spectrometry (GC-MS) and olfactometry/aroma extract dilution analysis (GC-O/AEDA).
  • Sicilian goat cheese using gas chromatography with flame ionization detection (GC-FID) and mass spectrometry (GC-MS).
  • Food products using gas chromatography with flame ionization detection (GC-FID).

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Pittogrammi

Corrosion

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

Eye Dam. 1 - Skin Corr. 1B

Codice della classe di stoccaggio

8A - Combustible corrosive hazardous materials

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

176.0 °F - Pensky-Martens closed cup

Punto d’infiammabilità (°C)

80 °C - Pensky-Martens closed cup


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Certificati d'analisi (COA)

Lot/Batch Number

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Articoli

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

Protocolli

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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