推荐产品
等級
certified reference material
TraceCERT®
品質等級
蒸汽密度
3.04 (vs air)
蒸汽壓力
1.5 mmHg ( 20 °C)
自燃溫度
824 °F
儲存期限
limited shelf life, expiry date on the label
expl. lim.
10 %
製造商/商標名
Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
儲存條件
under inert gas
技術
gas chromatography (GC): suitable
折射率
n20/D 1.393 (lit.)
bp
153-154 °C (lit.)
mp
−47 °C (lit.)
密度
0.95 g/mL at 25 °C (lit.)
應用
cleaning products
cosmetics
food and beverages
personal care
格式
neat
儲存溫度
−20°C
SMILES 字串
CC(C)C(O)=O
InChI
1S/C4H8O2/c1-3(2)4(5)6/h3H,1-2H3,(H,5,6)
InChI 密鑰
KQNPFQTWMSNSAP-UHFFFAOYSA-N
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一般說明
Certified content by quantitative NMR incl. uncertainty and expiry date are given on the certificate.
Download your certificate at: http://www.sigma-aldrich.com.
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法律資訊
訊號詞
Danger
危險分類
Acute Tox. 3 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B
儲存類別代碼
3 - Flammable liquids
水污染物質分類(WGK)
WGK 1
閃點(°F)
131.0 °F - closed cup
閃點(°C)
55 °C - closed cup
商品
Separation of Propionic acid; Acetic acid; Heptanoic acid; Isobutyric acid; Valeric acid; Isocaproic acid; Butyric acid; Isovaleric acid
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
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
实验方案
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.
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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