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Name Propionic anhydride
CAS 123-62-6
EINECS(EC#) 204-638-2
Molecular Formula C6H10O3
MDL Number MFCD00009303
Molecular Weight 130.14
MOL File 123-62-6.mol

Chemical Properties

Appearance Propionic anhydride is a colorless liquid. Strong, pungent, unpleasant odor.
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.)
Fp  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)
Stability: Stable. Combustible. Incompatible with strong oxidizing agents, water, moisture, most common metals, active halogen compounds, ammonia, amines.
explosive limit 1.3-9.5%(V)
Water Solubility  hydrolyses
Sensitive  Moisture Sensitive
Merck  14,7826
BRN  507066
Dielectric constant 18.0(16℃)
LogP 0.33 at 20℃
CAS DataBase Reference 123-62-6(CAS DataBase Reference)
NIST Chemistry Reference Propanoic acid, anhydride(123-62-6)
EPA Substance Registry System 123-62-6(EPA Substance)

Safety Data

Hazard Codes  C
Risk Statements 
R34:Causes burns.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
RIDADR  UN 2496 8/PG 3
WGK Germany  1
RTECS  UF9100000
Autoignition Temperature 545 °F
Hazard Note  Corrosive/Moisture Sensitive
HazardClass  8
PackingGroup  III
HS Code  29159000
Safety Profile
Moderately toxic by ingestion. Mildly toxic by skin contact. A corrosive irritant to skin, eyes, and mucous membranes. Combustible when exposed to heat or flame; can react with oxidizing materials. To fight fire, use CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. Used as an esterifyng agent and dehydrating agent. See also ANHYDRIDES.
Hazardous Substances Data 123-62-6(Hazardous Substances Data)
LD50 orally in rats: 2.36 g/kg (Smyth)

Hazard Information

Material Safety Data Sheet(MSDS)

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