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W222208

Isobutyric acid

Name: Isobutyric acid
Brand: ALDRICH

≥99%, FCC, FG

Synonym(s):

Isobutanoic acid, 2-Methylpropionic acid

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About This Item

Linear Formula:

(CH₃)₂CHCO₂H

CAS Number:

79-31-2

Molecular Weight:

88.11

FEMA Number:

2222

Council of Europe no.:

UNSPSC Code:

12164502

PubChem Substance ID:

24900936

Flavis number:

8.006

EC Number:

201-195-7

NACRES:

NA.21

MDL number:

MFCD00002658

Beilstein/REAXYS Number:

635770

Organoleptic:

butter; acidic; rancid

Grade:

FG, Kosher

Biological source:

synthetic

Agency:

meets purity specifications of JECFA

Food allergen:

no known allergens

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Properties

biological source

synthetic

Quality Level

300, 400

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

Description

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.

Application

Isobutyric acid enhances the anti-tumour effect of anti-PD-1 antibody.: This study presents groundbreaking research on how isobutyric acid can enhance the efficacy of anti-PD-1 antibodies, offering significant implications for improving cancer immunotherapy treatments (Murayama et al., 2024).

Biochem/physiol Actions

Odor at 10 ppm

Taste at 15 ppm

Other Notes

Natural occurrence: Roman chamomile, strawberry, dairy products.

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pictograms

GHS02,GHS06,GHS05

signalword

Danger

hcodes

H226,H302,H311,H314

pcodes

P210 - P233 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338

Hazard Classifications

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

Storage Class

3 - Flammable liquids

wgk

WGK 1

flash_point_f

131.0 °F - closed cup

flash_point_c

55 °C - closed cup

ppe

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

Regulatory Information

危险化学品

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Global Trade Item Number

SKU	GTIN
W222208-5KG-K	04061838191168
W222208-SAMPLE-K	04061837508936
W222208-10KG-K	04061838179715
W222208-1KG-K	04061837508929
W222208-25KG-K	04061838191151