Isobutyric acid

SIAL/58360 - puriss. p.a., ≥99.5%

Synonym: 2-Methylpropionic acid

CAS Number: 79-31-2
Empirical Formula (Hill Notation): C₄H₈O₂
Molecular Weight: 88.11
EC Number: 201-195-7
MDL Number: MFCD00002658
Linear Formula: (CH₃)₂CHCO₂H
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-58360-100ML	100 mL	$38.80 1/EA	Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

assay	≥99.5%
	≥99.5% (GC)
autoignition temp.	824 °F
bp	153-154 °C (lit.)
cation traces	Al: ≤0.5 mg/kg
	Ba: ≤0.1 mg/kg
	Bi: ≤0.1 mg/kg
	Ca: ≤0.5 mg/kg
	Cd: ≤0.05 mg/kg
	Co: ≤0.02 mg/kg
	Cr: ≤0.02 mg/kg
	Cu: ≤0.02 mg/kg
	Fe: ≤0.1 mg/kg
	K: ≤0.5 mg/kg
	Li: ≤0.1 mg/kg
	Mg: ≤0.1 mg/kg
	Mn: ≤0.02 mg/kg
	Mo: ≤0.1 mg/kg
	Na: ≤2 mg/kg
	Ni: ≤0.02 mg/kg
	Pb: ≤0.1 mg/kg
	Sr: ≤0.1 mg/kg
	Zn: ≤0.1 mg/kg
density	0.95 g/mL at 25 °C (lit.)
expl. lim.	10 %
functional group	carboxylic acid
grade	puriss. p.a.
impurities	≤0.2% water
InChI	1S/C4H8O2/c1-3(2)4(5)6/h3H,1-2H3,(H,5,6)
InChI key	KQNPFQTWMSNSAP-UHFFFAOYSA-N
mp	−47 °C (lit.)
Quality Level	200
refractive index	n20/D 1.393
	n20/D 1.393 (lit.)
SMILES string	CC(C)C(O)=O
vapor density	3.04 (vs air)
vapor pressure	1.5 mmHg ( 20 °C)

Application:	Isobutyric acid may be used to synthesize methacrylic acid via oxidative dehydrogenation in the presence of a suitable heteropolyacid as catalyst.
General description:	Isobutyric acid can be prepared via the carbonylation of propylene.

Symbol	GHS02,GHS05,GHS06
Signal word	Danger
Hazard statements	H226 - H302 - H311 - H314
Precautionary statements	P210 - P233 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
Hazard Codes	C
Risk Statements	10-21/22-34
Safety Statements	26-36/37/39-45
RIDADR	UN 2529 8(3) / PGIII
WGK Germany	WGK 1
Flash Point(F)	131.0 °F - closed cup
Flash Point(C)	55 °C - closed cup

Purity	≥99.5% (GC); ≥99.5%
bp	153-154 °C (lit.)
mp	−47 °C (lit.)
Density	0.95 g/mL at 25 °C (lit.)
Refractive Index	n20/D 1.393 (lit.); n20/D 1.393
UNSPSC	12352100

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