SPECTRUM

Chemical Fact Sheet

Chemical Abstract Number (CAS #) 107120
CASRN 107-12-0
SynonymsEthyl cyanide
Propionitrile
Propanenitrile
2-Methylacetonitrile
Analytical Methods EPA Method 524.2
EPA Method 8260
Molecular FormulaC3H5N

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 settings.
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) .

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