Isobutyric acid

Modify Date: 2025-08-20 18:56:25

Isobutyric acid structure	Common Name	Isobutyric acid
	CAS Number	79-31-2	Molecular Weight	88.105
	Density	1.0±0.1 g/cm3	Boiling Point	155.2±8.0 °C at 760 mmHg
	Molecular Formula	C₄H₈O₂	Melting Point	-47 °C
	MSDS	Chinese USA	Flash Point	55.6±0.0 °C
	Symbol	GHS02, GHS05, GHS06	Signal Word	Danger

Name	isobutyric acid
Synonym	More Synonyms

Density	1.0±0.1 g/cm3
Boiling Point	155.2±8.0 °C at 760 mmHg
Melting Point	-47 °C
Molecular Formula	C₄H₈O₂
Molecular Weight	88.105
Flash Point	55.6±0.0 °C
Exact Mass	88.052429
PSA	37.30000
LogP	0.59
Vapour density	3.04 (vs air)
Vapour Pressure	1.6±0.6 mmHg at 25°C
Index of Refraction	1.408
InChIKey	KQNPFQTWMSNSAP-UHFFFAOYSA-N
SMILES	CC(C)C(=O)O
Water Solubility	210 g/L (20 ºC)

Isobutyric acid MSDS(Chinese)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: NQ4375000

CHEMICAL NAME :: Isobutyric acid

CAS REGISTRY NUMBER :: 79-31-2

BEILSTEIN REFERENCE NO. :: 0635770

LAST UPDATED :: 199710

DATA ITEMS CITED :: 7

MOLECULAR FORMULA :: C4-H8-O2

MOLECULAR WEIGHT :: 88.12

WISWESSER LINE NOTATION :: QVY1&1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Open irritation test

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: AIHAAP American Industrial Hygiene Association Journal. (AIHA, 475 Wolf Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year: 23,95,1962 ** ACUTE TOXICITY DATA **

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 280 uL/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: AIHAAP American Industrial Hygiene Association Journal. (AIHA, 475 Wolf Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year: 23,95,1962

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 500 uL/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: AIHAAP American Industrial Hygiene Association Journal. (AIHA, 475 Wolf Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year: 23,95,1962 *** REVIEWS *** TOXICOLOGY REVIEW AMIHAB AMA Archives of Industrial Health. (Chicago, IL) V.11-21, 1955-60. For publisher information, see AEHLAU. Volume(issue)/page/year: 21,100,1960 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X4110 No. of Facilities: 93 (estimated) No. of Industries: 4 No. of Occupations: 14 No. of Employees: 5052 (estimated) No. of Female Employees: 652 (estimated)

Symbol	GHS02, GHS05, GHS06
Signal Word	Danger
Hazard Statements	H226-H302-H311-H314
Precautionary Statements	P210-P260-P280-P303 + P361 + P353-P305 + P351 + P338-P370 + P378
Personal Protective Equipment	Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes	Xn:Harmful
Risk Phrases	R21/22
Safety Phrases	S23-S36/37/39
RIDADR	UN 2529 3/PG 3
WGK Germany	1
RTECS	NQ4375000
Packaging Group	III
Hazard Class	3
HS Code	2915600000

Precursor 10
CAS#:74-98-6 Propane Residua... CAS#:201230-82-2 carbon monoxide CAS#:78-84-2 Isobutyraldehyde CAS#:79-41-4 Methacrylic acid
CAS#:78-83-1 isobutanol CAS#:1759-53-1 Cyclopropanecar... CAS#:869563-40-6 (4S)-4-benzyl-3... CAS#:75-29-6 2-Chloropropane
CAS#:75-28-5 Isobutane Resid... CAS#:124-38-9 Carbon dioxide
DownStream 10
CAS#:10457-59-7 14-Isopropyldib... CAS#:5851-43-4 2-isopropyl-1H-... CAS#:5471-77-2 3-Ethoxy-2,2-di... CAS#:595-46-0 2,2-Dimethylmal...
CAS#:595-37-9 2,2-Dimethylbut... CAS#:813-72-9 Hexanoic acid,2... CAS#:14250-88-5 PENTANAL, 2,2-D... CAS#:478296-72-9 Gabapentin enacarbil
CAS#:492-37-5 DL-2-Phenylprop... CAS#:19136-93-7 2-Methyl(2-2H)p...

HS Code	2915600000
Summary	2915600000 butanoic acids and pentanoic acids and their salts and esters VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

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2-Methylpropionic acid

α-methylpropionic acid

MFCD00002658

Methylpropanoic acid, 2-

Propanoic acid, 2-methyl-

isobutanoic acid

2-methyl-propionic acid

a-Methylpropionic acid

Isopropyl formic acid

4-02-00-00843 (Beilstein Handbook Reference)

Isobutyric acid

α-methylpropanoic acid

2-Methylpropanoic acid

isopropylformic acid

propane-2-carboxylic acid

a-Methylpropanoic acid

2-methyl-propanoic acid

Propionic acid, 2-methyl-

iso-Butyric Acid

EINECS 201-195-7

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Isobutyric acid
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: Isobutyric acid
Price: ￥118.0/500ml
Purity: 99.0%
Delivery: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Isobutyric acid
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Delivery: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: Isobutyric acid
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Delivery: Inquiry
Contact: Anson
Email: info@tianfuchem.com

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