메타아크릴로니트릴 C화학적 특성, 용도, 생산
화학적 성질
Methylacrylonitrile is a colorless liquid with
an odor like bitter almonds. It is reported that methacrylonitrile cannot be detected by its smell even at concentrations which are already dangerous for humans. Hence,
special attention must be given to ventilation and
estimations of the amount of poison present must be carried
out frequently.
용도
This study reports the toxicity and metabolism of Methacrylonitrile (MeAN) in normal male Sprague-Dawley rats and those pre-treated with caffeine, alcohol or both. These results suggest that caffeine inhibited and alcohol enhanced toxicity and metabolism of MeAN.
생산 방법
1.Methyl acrylonitrile can be derived from isobutyraldehyde.
2.Methacrylonitrile can be produced by ammoxidation of isobutene. Its copolymerization
with methacrylic acid gives poly (methacrylimide), an engineering plastic commercialized
under the trade name Rohacell by R€ohm (Federal
Republic of Germany) .
일반 설명
A clear colorless liquid. Less dense than water. Flash point 55°F. Boiling point 195°F. Very be toxic by ingestion, inhalation and skin absorption. Used to make plastics and coatings.
공기와 물의 반응
Highly flammable. Soluble in water.
반응 프로필
METHACRYLONITRILE is a colorless, flammable, toxic liquid. Explosive in the form of vapor when exposed to heat, flame or sparks. When heated to decomposition Methacrylonitrile emits toxic fumes of nitrile and oxides of nitrogen [Lewis, 3rd ed., 1993, p. 829].
위험도
Flammable. Toxic by ingestion, inhalation,
and skin absorption.
건강위험
A lacrimator (causes tearing); an insidious poison which causes delayed skin reactions. Very readily absorbed through skin. Highly toxic.
화재위험
Methacrylonitrile evolves flammable concentrations of vapor at temperatures down to 55.04F. Thus, at room temperatures, flammable concentrations are liable to be present. Toxic fumes of nitrogen oxides are released when the material burns. Also, the chemical will explode due to its tendency to polymerize violently. Avoid heat. Hazardous polymerization may occur.
Safety Profile
Poison by ingestion,
inhalation, skin contact, and intraperitoneal
routes. An eye irritant. A dangerous fire
hazard when exposed to heat, flame, or
sparks. When heated to decomposition it
emits toxic fumes of NOx and CN-. See also
NITRILES.
잠재적 노출
This material is used as a monomer
in the preparation of polymeric coatings and elastomers
운송 방법
UN3079 Methacrylonitrile, stabilized, Labels:
6.1; Hazard class: 6.1, 3-Flammable liquid, Inhalation
Hazard Zone B.
Purification Methods
Wash it with saturated aqueous NaHSO3 (to remove inhibitors such as p-tert-butylcatechol), 1% NaOH in saturated NaCl and then with saturated NaCl. Dry it with CaCl2 and fractionally distil it under nitrogen to separate it from impurities such as methacrolein and acetone. [Beilstein 2 IV 1539.]
비 호환성
May form explosive mixture with air.
Methacrylonitrile evolves flammable concentrations of
vapor at temperatures down to 12.8C. Thus, at room temperatures, flammable concentrations are liable to be present. Incompatible with oxidizers (chlorates, nitrates,
peroxides, permanganates, perchlorates, chlorine, bromine,
fluorine, etc.); contact may cause fires or explosions. Keep
away from alkaline materials, strong bases, strong acids,
oxoacids, epoxides, aliphatic amines, alkanolamines, alkali,
and light. Heat sensitive; polymerization may occur due
to elevated temperature, visible light, or contact with
a concentrated alkali. Note: Typically contains 50 pm of monoethyl ether hydroquinone (662-62-8) as an inhibitor
to prevent polymerization.
폐기물 처리
Consult with environmental
regulatory agencies for guidance on acceptable disposal
practices. Generators of waste containing this contaminant
(≥100 kg/mo) must conform to EPA regulations governing
storage, transportation, treatment, and waste disposal. Add
alcoholic NaOH, then oxidize with sodium hypochlorite.
After reaction, flush to sewer with water
메타아크릴로니트릴 준비 용품 및 원자재
원자재
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