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97-72-3

Name Isobutyric anhydride
CAS 97-72-3
EINECS(EC#) 202-603-6
Molecular Formula C8H14O3
MDL Number MFCD00008913
Molecular Weight 158.19
MOL File 97-72-3.mol

Chemical Properties

Appearance clear colorless liquid
Melting point  -56 °C (lit.)
Boiling point  182 °C (lit.)
density  0.954 g/mL at 25 °C(lit.)
vapor density  5.45 (vs air)
vapor pressure  10 mm Hg ( 67 °C)
refractive index  n20/D 1.406(lit.)
Fp  152 °F
storage temp.  Store at 0°C
form  Liquid
color  Clear colorless
explosive limit 1.09%, 87°F
Water Solubility  decomposes
Sensitive  Moisture Sensitive
BRN  386267
Dielectric constant 13.9(20℃)
Exposure limits ACGIH: TWA 10 ppm
NIOSH: TWA 10 ppm(30 mg/m3); STEL 15 ppm(45 mg/m3)
LogP 1.1 at 25℃
Uses
Chemical intermediate.
CAS DataBase Reference 97-72-3(CAS DataBase Reference)
NIST Chemistry Reference Propanoic acid, 2-methyl-, anhydride(97-72-3)
EPA Substance Registry System 97-72-3(EPA Substance)

Safety Data

Hazard Codes  C
Risk Statements 
R34:Causes burns.
R21/22:Harmful in contact with skin and if swallowed .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
RIDADR  2922
WGK Germany  3
RTECS  NQ5550000
13-21
Autoignition Temperature 624 °F
TSCA  Yes
HazardClass  8
PackingGroup  II
HS Code  29159000
Hazardous Substances Data 97-72-3(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 266 mg/kg LD50 dermal Rabbit 475 mg/kg

Hazard Information

Material Safety Data Sheet(MSDS)

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