is a colourless, volatile, highly flammable liquid that can be dissolved
in water and has a sharp, onion or garlic-like odour. Acrylonitrile
is primarily used in the production of nitril polymers. These
in turn are used to make materials such as plastics, synthetic rubbers
and acrylic fibres. Exposure to acrylonitrile can occur from inhalation,
ingestion, and skin or eye absorption.
Acrylonitrile is a respiratory, skin, and eye irritant and may cause
allergic contact dermatitis. Inhalation of acrylonitrile vapours
primarily affects the nervous system and lungs, and can cause nose
and throat irritation, tightness in the chest, difficulty breathing,
nausea, dizziness, weakness, headache, impaired judgment, and convulsions.
Prolonged exposure can cause permanent damage and is a suspected
causative agent of toxic epidermal necrosis.
Currently, there are
no regulations pertaining to acrylonitrile on construction projects.
Industrial processes involving acrylonitrile are regulated under
the Ontario Occupational Health & Safety Act, R.S.O. 1990, Regulation
835 as amended by O.Reg. 101/04, Designated Substance – Acrylonitrile.
The transport of the waste to the disposal site is controlled by
the federal Transportation of Dangerous Goods Act, 1992.