|Chemical Abstract Number (CAS #)||
||EPA Method 524.2||EPA Method 8260
Link to the National Library of Medicine's Hazardous Substances
Database for more details
on this compound.
|Use|| CHEM INT FOR DI-N-PROPYLAMINE
Solvent, dielectric fluid, intermediate
EXPTL APPLICATIONS: ULCEROGEN
|Consumption Patterns|| ESSENTIALLY 100% AS CHEM INT FOR DI-N-PROPYLAMINE
|Apparent Color|| COLORLESS LIQUID
|Odor|| PLEASANT, ETHEREAL, SWEETISH
|Boiling Point|| 97.2 DEG C @ 760 MM HG
|Melting Point|| -91.8 DEG C
|Molecular Weight|| 55.08
|Density|| SP GR: 0.7818 @ 20 DEG C/4 DEG C
|Sensitivity Data|| Immediately irritating to the eye. Cyanides
Vapor is irritating to eyes, nose & throat. Liquid is irritating to skin & eyes.
|Environmental Impact|| Propionitrile may be released to the environment as fugitive emissions or in wastewater
during its by-product formation during the electro-reduction of acrylonitrile to form adiponitrile.
It will be persistent in the atmosphere (degradation half-life 83 days). Its only effective removal
mechanism from the air is washout by rain. If released into water it will volatilize only very slowly
and may biodegrade. Adsorption to sediment and bioconcentration in aquatic organisms will not
be significant. If spilled on land, propionitrile will readily evaporate and leach into the ground
where its fate is unknown. Human exposure will most likely be via inhalation in occupational
|Environmental Fate|| TERRESTRIAL FATE: If released on land, propionitrile would be expected to leach
and/or evaporate. It is reported to biodegrade rapidly in a screening study , and, therefore
biodegradation in soil may be an important degradation process.
AQUATIC FATE: If released into water, propionitrile would volatilize (half-life 20 hr in a model
river one meter deep(1,SRC). Biodegradation is possible but there is no supporting evidence from
studies in environmental waters. Adsorption to the sediment; bioconcentration and hydrolysis
would not be significant.
ATMOSPHERIC FATE: If released into the atmosphere, propionitrile will degrade very slowly
due to reaction with hydroxyl radicals (half-life 83 days ). Due to its high water solubility, 2.14
moles/l , it should be scavenged from the air by rain.
|Drinking Water Impact|| DRINKING WATER: Detected, not quantified in one sample of groundwater-derived
drinking water in a survey of 14 treated drinking waters from different sources . Propionitrile
was not found in a sample from the same supply after distribution .
EFFL: Offgases from oil shale retort - Rio Blanco, Colorado 16-26 ppm (G/G) .