1,2,3-トリメチルベンゼン 化学特性,用途語,生産方法
外観
無色～わずかにうすい黄色, 澄明の液体
溶解性
エタノール及びアセトンに極めて溶けやすく、水にほとんど溶けない。
用途
化学合成原料、プラスチックの紫外線安定剤
化学的特性
colourless liquid
物理的性質
Clear, colorless, flammable liquid with an aromatic odor similar to propylbenzene, ethylbenzenes,
or xylenes.
使用
Raw material for chemical synthesis.
定義
ChEBI: A trimethylbenzene carrying methyl groups at positions 1, 2 and 3. It has been found in Centaurium erythraea.
危険性
Combustible. Central nervous system
impairment, asthma, and hematologic effects.
安全性プロファイル
Mildly toxic by
ingestion, Flammable liquid when exposed
to heat, sparks, or flame. To fight fire, use
water spray, mist, dry chemical, CO2, foam.
When heated to decomposition it emits
acrid smoke and irritating fumes.
職業ばく露
(1,2,3-and 1,2,4-isomers): These materials
are used as solvents and in dye and perfume manufacture.
The 1,2,3-isomer is used as raw material in chemical
synthesis and as an UV stabilizer. The 1,2,4-isomer is used
as the raw material for trimellitic anhydride manufacture.
These compounds are found in diesel engine exhaust
fumes.
環境運命予測
Photolytic. Glyoxal, methylglyoxal, and biacetyl were produced from the photooxidation of
1,2,3-trimethylbenzene by OH radicals in air at 25 °C (Tuazon et al., 1986a). The rate constant for
the reaction of 1,2,3-trimethylbenzene and OH radicals at room temperature was 1.53 x 10
-11
cm
3/molecule?sec (Hansen et al., 1975). A rate constant of 1.49 x 10
-8 L/molecule?sec was reported
for the reaction of 1,2,3-trimethylbenzene with OH radicals in the gas phase (Darnall et al., 1976).
Similarly, a room temperature rate constant of 3.16 x 10
-11 cm
3/molecule?sec was reported for the
vapor-phase reaction of 1,2,3-trimethylbenzene with OH radicals (Atkinson, 1985). At 25 °C, a
rate constant of 2.69 x 10
-11 cm
3/molecule?sec was reported for the same reaction (Ohta and
Ohyama, 1985). 2,3-Butanedione was the only products identified from the OH radical-initiated
reaction of 1,2,4-trimethylbenzene in the presence of nitrogen dioxide. The amount of 2,3-
butanedione formed decreased with increased concentration of nitrogen dioxide (Bethel et al.,
2000).
Chemical/Physical. 1,2,3-Trimethylbenzene will not hydrolyze because it does not contain a
hydrolyzable group (Kollig, 1993).
輸送方法
UN3295 Hydrocarbons, liquid, n.o.s., Hazard
Class: 3; Labels: 3-Flammable liquid. UN1993 Flammable
liquids, n.o.s., Hazard Class: 3; Labels: 3-Flammable liquid,
Technical Name Required. 1,3,5-Trimethylbenzene;
UN2325, Hazard Class: 3; Labels: 3-Flammable liquid.
1,2,4-Trimethylbenzene:
不和合性
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.
廃棄物の処理
Dissolve or mix the material
with a combustible solvent and burn in a chemical incinerator
equipped with an afterburner and scrubber. All federal,
state, and local environmental regulations must be
observed.
1,2,3-トリメチルベンゼン 上流と下流の製品情報
原材料
準備製品
2,3-ジメチルベンズアルデヒド
2,6-ジメチル安息香酸
3,4,5-トリメチル安息香酸
2,3,4-トリメチルベンゼンスルホン酸
Benzaldehyde, 2,3,4-trimethyl- (6CI,8CI,9CI)