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W222208

Sigma-Aldrich

Isobutyric acid

≥99%, FCC, FG

Synonym(s):
Isobutanoic acid, 2-Methylpropionic acid
Linear Formula:
(CH3)2CHCO2H
CAS Number:
Molecular Weight:
88.11
FEMA Number:
2222
Beilstein:
635770
EC Number:
Council of Europe no.:
6
MDL number:
PubChem Substance ID:
Flavis number:
8.006
NACRES:
NA.21

Quality Level

biological source

synthetic

grade

FG
Kosher

Agency

meets purity specifications of JECFA

reg. compliance

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

vapor density

3.04 (vs air)

vapor pressure

1.5 mmHg ( 20 °C)

assay

≥99%

autoignition temp.

824 °F

expl. lim.

10 %

refractive index

n20/D 1.393 (lit.)

bp

153-154 °C (lit.)

mp

−47 °C (lit.)

density

0.95 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

Organoleptic

butter; acidic; rancid

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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General description

Isobutyric acid is a volatile fatty acid that can be used as a flavoring agent. It occurs naturally in Ceratonia siliqua L. The gum obtained from the kernels of this species is used as a thickener in the food industry.

Packaging

1 kg in glass bottle
5, 10, 25 kg in composite drum

Biochem/physiol Actions

Odor at 10 ppm
Taste at 15 ppm

Other Notes

Natural occurrence: Roman chamomile, strawberry, dairy products.

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

131.0 °F - closed cup

Flash Point(C)

55 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

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