알파-메틸 스타이렌 C화학적 특성, 용도, 생산
화학적 성질
clear colourless liquid
물리적 성질
Colorless liquid with a sharp aromatic odor. Odor threshold concentration is 290 ppb (quoted,
Amoore and Hautala, 1983).
용도
Polymerization monomer, especially forpolyesters.
생산 방법
α-Methylstyrene (AMS) is produced as a by-product in the production of phenol and acetone from cumene.
일반 설명
A colorless liquid. Insoluble in water and less dense than water. Flash point 115°F. May be mildly toxic by ingestion, inhalation and skin absorption. Vapors may be narcotic by inhalation. Used as a solvent and to make other chemicals.
공기와 물의 반응
Flammable. Oxidizes readily in air to form unstable peroxides that may explode spontaneously [Bretherick, 1979 p.151-154, 164]. Insoluble in water.
반응 프로필
2-Phenyl-1-propene is easily peroxidizable; the peroxide may initiate exothermic polymerization of the bulk material. Reacts violently with strong oxidizing agents [Handling Chemicals Safely, 1980 p. 866; Bretherick, 1979 p. 160].
위험도
Moderate fire risk. Explosive limits in air1.9–6.1%. Avoid inhalation and skin contact. Upperrespiratory tract irritant, kidney and female repro-ductive damage. Possible carcinogen.
건강위험
Inhalation causes irritation of respiratory tract, headache, dizziness, light-headedness, and breathlessness. Ingestion causes irritation of mouth and stomach. Contact with liquid irritates eyes. Prolonged skin contact can cause severe rashes, swelling, and blistering.
Safety Profile
Mildly toxic by
inhalation. Human systemic effects by
inhalation: irritant effects. A skin and eye
irritant. Flammable when exposed to heat or
flame; can react vigorously with oxidizing
materials. When heated to decomposition it
emits acrid smoke and irritating fumes.
잠재적 노출
Methylstyrene is used as additive,
plasticizer, and copolymer; used in the production of
modified polyester and alkyd resin formulations.
환경귀착
Chemical/Physical. Polymerizes in the presence of heat or catalysts (Hawley, 1981).
운송 방법
UN2303 Isopropenylbenzene, Hazard Class: 3;
Labels: 3-Flammable liquid
Purification Methods
Wash the monomer three times with aqueous 10% NaOH (to remove inhibitors such as quinol), then six times with distilled water, dry with CaCl2 and distil it unde
비 호환성
Vapors may form explosive mixture
with air. 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, peroxides, halogens, catalysts for vinyl or ionic
polymers; aluminum, iron chloride; copper. Methylstyrene
may form unstable peroxides; may polymerize. Usually
contains an inhibitor, such as tert-butyl catechol.
폐기물 처리
ncineration, often by admixture with a more flammable solvent
알파-메틸 스타이렌 준비 용품 및 원자재
원자재
준비 용품
Antioxidant ZM-405
High temperature levelling agent BOF
트리페닐포스페이트
1-(1-cycloprop-2-enyl)-2-methyl-benzene
Atropaldehyde
Benzene, 1,1'-(1,4-dimethyl-1,3-butadiene-1,4-diyl)bis-
1H-Indene, 2,3-dihydro-1,1-dimethyl-3-phenyl-
1,1,2,3,3-pentamethylindan
METHYLCINNAMALDEHYDE
