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W217905

Sigma-Aldrich

Isobutyl alcohol

≥99%, FCC, FG

Synonym(s):

2-Methyl-1-propanol, Isobutanol, Isobutyl alcohol

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About This Item

Linear Formula:
(CH3)2CHCH2OH
CAS Number:
78-83-1
Molecular Weight:
74.12
FEMA Number:
2179
Beilstein/REAXYS Number:
1730878
EC Number:
201-148-0
Council of Europe no.:
49
MDL number:
MFCD00004740
UNSPSC Code:
12164502
PubChem Substance ID:
24900892
Flavis number:
2.001
NACRES:
NA.21

biological source

synthetic

Quality Level

400

grade

FG
Fragrance grade
Halal
Kosher

agency

follows IFRA guidelines
meets purity specifications of JECFA

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 178/2002
FCC
FDA 21 CFR 117
FDA 21 CFR 172.515

vapor density

2.55 (vs air)

vapor pressure

8 mmHg ( 20 °C)
8.8 mmHg ( 0 °C)

assay

≥99%

form

liquid

autoignition temp.

801 °F

expl. lim.

10.6 %

refractive index

n20/D 1.396 (lit.)

bp

108 °C (lit.)

mp

−108 °C (lit.)

density

0.803 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

no known allergens

organoleptic

ethereal; wine-like

SMILES string

CC(C)CO

InChI

1S/C4H10O/c1-4(2)3-5/h4-5H,3H2,1-2H3

InChI key

ZXEKIIBDNHEJCQ-UHFFFAOYSA-N

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General description

Isobutyl alcohol is a water-soluble aliphatic alcohol that can be used as a flavoring agent. It has been identified as one of the aroma/flavor compounds produced by Saccharomyces cerevisiae during the semi-aerobic fermentation of grapes to form wine.

Application


  • Volatiles from nutritional fungal symbiont influence the attraction of Anisandrus maiche (Coleoptera: Curculionidae) to ethanol-baited traps.: This investigation revealed that volatiles emitted by fungal symbionts impact the attraction of Anisandrus maiche to ethanol-baited traps. The study suggests potential applications in pest management strategies by utilizing isobutanol and other volatiles (Tobin et al., 2024).

signalword

Danger

Hazard Classifications

Eye Dam. 1 - Flam. Liq. 3 - Skin Irrit. 2

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

82.4 °F - closed cup

flash_point_c

28 °C - closed cup

ppe

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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2-Methyl-1-propanol puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99% (GC)

Sigma-Aldrich

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USP

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Sigma-Aldrich

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Burdock GA
Encyclopedia of Food and Color Additives, 1, 1443-1444 (1997)
The effects of grape must fermentation conditions on volatile alcohols and esters formed by Saccharomyces cerevisiae
Mauricio JC, et al
Journal of the Science of Food and Agriculture, 75(2), 155-160 (1997)
Jeremy J Minty et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(36), 14592-14597 (2013-08-21)
Synergistic microbial communities are ubiquitous in nature and exhibit appealing features, such as sophisticated metabolic capabilities and robustness. This has inspired fast-growing interest in engineering synthetic microbial consortia for biotechnology development. However, there are relatively few reports of their use
Han Li et al.
Science (New York, N.Y.), 335(6076), 1596-1596 (2012-03-31)
One of the major challenges in using electrical energy is the efficiency in its storage. Current methods, such as chemical batteries, hydraulic pumping, and water splitting, suffer from low energy density or incompatibility with current transportation infrastructure. Here, we report
D Norbäck et al.
Occupational and environmental medicine, 52(6), 388-395 (1995-06-01)
As a part of the worldwide European Community respiratory health survey, possible relations between symptoms of asthma, building characteristics, and indoor concentration of volatile organic compounds (VOCs) in dwellings were studied. The study comprised 88 subjects, aged 20-45 years, from
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