Isobutyric anhydride , >95.0%(GC) , 97-72-3

Synonym(s):
2-Methylpropionic anhydride;Bis(2-methylpropionic acid) anhydride, 2-Methylpropionic anhydride;Isobutyric anhydride

CAS NO.：97-72-3

Empirical Formula: C8H14O3

Molecular Weight: 158.2

MDL number: MFCD00008913

EINECS: 202-603-6

PRODUCT Properties

• 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.)
• Flash point: 152 °F
• storage temp.: Store below +30°C.
• form: Liquid
• color: Clear 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℃）
• 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)

Description and Uses

Isobutyric anhydride was used in the synthesis of 4-O-isobutyryl derivative via reaction with octyl β-D-glucopyranoside in the presence of C₂-symmetric chiral 4-pyrrolidinopyridine as a catalyst.

Safety

• Symbol(GHS): GHS05,GHS06
• Signal word: Danger
• Hazard statements: H301+H311-H314
• Precautionary statements: P270-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P361+P364
• 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: Yes
• HS Code: 2915 90 70
• HazardClass: 8
• PackingGroup: II
• Hazardous Substances Data: 97-72-3(Hazardous Substances Data)
• Toxicity: LD50 orally in Rabbit: 266 mg/kg LD50 dermal Rabbit 475 mg/kg
• Limited Quantities: 5.0 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid)
• Excepted Quantities: Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)