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Isobutyric anhydride Structure

Isobutyric anhydride

Chemical Properties

Melting point −53.5 °C (−64.3 °F; 219.7 K)
Boiling point 181.5 °C (358.7 °F; 454.6 K)
Density  0.9535 g/cm³ (at 20 °C)
vapor density  5.45 (vs air)
vapor pressure  10 mm Hg ( 67 °C)
refractive index  1.41
Flash point 64 °C
storage temp.  Store below +30°C.
form  liquid
color  Colorless
explosive limit 1.09%, 87°F
Water Solubility  decomposes
Sensitive  Moisture Sensitive
BRN  386267
Exposure limits ACGIH: TWA 10 ppm
NIOSH: TWA 10 ppm(30 mg/m3); STEL 15 ppm(45 mg/m3)
Dielectric constant 13.9(20℃)
InChI 1S/C8H14O3/c1-5(2)7(9)11-8(10)6(3)4/h5-6H,1-4H3
InChIKey LSACYLWPPQLVSM-UHFFFAOYSA-N
SMILES CC(C)C(=O)OC(=O)C(C)C
LogP 1.1 at 25℃
CAS DataBase Reference 97-72-3(CAS DataBase Reference)
NIST Chemistry Reference Propanoic acid, 2-methyl-, anhydride(97-72-3)
EPA Substance Registry System Isobutyric anhydride (97-72-3)

Safety Information

Hazard Codes  C
Risk Statements  34-21/22
Safety Statements  26-36/37/39-45
RIDADR  2922
WGK Germany  3
RTECS  NQ5550000
F  13-21
Autoignition Temperature 624 °F
TSCA  TSCA listed
HS Code  2915900090
HazardClass  8
PackingGroup  II
Storage Class 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
Hazard Classifications Acute Tox. 3 Dermal
Acute Tox. 3 Oral
Skin Corr. 1B
Hazardous Substances Data 97-72-3(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 266 mg/kg LD50 dermal Rabbit 475 mg/kg

MSDS

Usage And Synthesis

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