isobutyric acid

CAS No. 79-31-2

Formula: C4H8O2
Basic Info

Isobutyric acid, also known as 2-methylpropanoic acid, is a carboxylic acid with structural formula (CH3)2-CH-COOH.
It is found in the free state in carobs (Ceratonia siliqua), in vanilla and in the root of Arnica dulcis, and as an ethyl ester in croton oil.
Isobutyric acid is an isomer of n-butyric acid; they have the same chemical formula C4H8O2 but a different structure.

Formula
C4H8O2
Molecular Weight
88.1051
Exact Mass
88.0524
LogP
0.727
PSA
37.3
Synonyms

Isobutyric acid

Propanoic acid, 2-methyl-

expand collapse

Properties
Appearance & Physical State
COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR
Density
0.948
Boiling Point
153-154ºC
Melting Point
-47ºC
Flash Point
59ºC
Refractive Index
1.392-1.394
Water Solubility
210 g/L (20 ºC)
Vapor Density
3.04 (vs air)
Vapor Pressure
1.5 mm Hg ( 20 °C)
Safety Info
RTECS
NQ4375000
Safety Statements
23-36/37/39
WGK Germany
1
Risk Statements
R21/22
HS Code
2915600000
RIDADR
UN 2529
Hazard Class
3
Packing Group
III
Caution Statement
P210; P260; P280; P303 + P361 + P353; P305 + P351 + P338; P370 + P378
Hazard Codes
Hazard Declaration
Spectrum
NMR Spectrum 1H NMR : 90 MHz in CDCl3
expand collapse
IR Spectrum IR : liquid film
expand collapse
Mass Spectrum Mass
expand collapse

Related Compound Information

PRODUCTS
Coming Soon
SUPPLIERS
Coming Soon
BRANDING
Coming Soon