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Propionic anhydride Structure

Propionic anhydride

Chemical Properties

Melting point -42 °C
Boiling point 167 °C(lit.)
Density  1.015 g/mL at 25 °C(lit.)
vapor density  4.5 (vs air)
vapor pressure  10 mm Hg ( 57.7 °C)
refractive index  n20/D 1.404(lit.)
Flash point 165 °F
storage temp.  Store below +30°C.
solubility  H2O: decomposes (when in contact with water)
form  clear liquid
color  Colorless to Almost colorless
Odor like acetaldehyde
PH 2.5 (100g/l, H2O, 20℃)(calculated on the free acid)
explosive limit 1.3-9.5%(V)
Water Solubility  hydrolyses
Sensitive  Moisture Sensitive
Merck  14,7826
BRN  507066
Dielectric constant 18.0(16℃)
Stability Stable. Combustible. Incompatible with strong oxidizing agents, water, moisture, most common metals, active halogen compounds, ammonia, amines.
LogP 0.33 at 20℃
CAS DataBase Reference 123-62-6(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII E3A2VV18E6
NIST Chemistry Reference Propanoic acid, anhydride(123-62-6)
EPA Substance Registry System Propionic anhydride (123-62-6)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H314
Precautionary statements P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363
Hazard Codes  C
Risk Statements  34-R34
Safety Statements  26-45-S45-S26
RIDADR  UN 2496 8/PG 3
WGK Germany  1
RTECS  UF9100000
Autoignition Temperature 545 °F
Hazard Note  Corrosive/Moisture Sensitive
TSCA  Yes
HS Code  2915 90 70
HazardClass  8
PackingGroup  III
Hazardous Substances Data 123-62-6(Hazardous Substances Data)
Toxicity LD50 orally in rats: 2.36 g/kg (Smyth)
NFPA 704:
2
3 1

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