プロピルベンゼン 化學(xué)特性,用途語(yǔ),生産方法
外観
無(wú)色～黃褐色, 澄明の液體
溶解性
水に不溶, エタノールに可溶, エーテルに易溶。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
染色剤、セルロースアセテートの溶剤
化學(xué)的特性
colourless or light yellow liquid
物理的性質(zhì)
Clear, colorless, mobile liquid with an odor similar to ethylbenzene or toluene. An odor threshold
concentration of 3.8 ppb
v was determined by a triangular odor bag method (Nagata and Takeuchi,
1990). Cometto-Mu?iz and Cain (1994) reported an average nasal pungency threshold
concentration of 1,487 ppm
v.
使用
n-Propylbenzene is used to prepare benzoic acid. It is employed as a solvent for gas chromatography. It is also used as a solvent and an intermediate in organic synthesis. Further, it is used in fuels and fuel additives.
定義
ChEBI: An alkylbenzene that is benzene having one of its aromatic hydrogens substituted by a propyl group.
一般的な説明
A clear colorless liquid. Insoluble in water and less dense than water. Flash point 86°F. Mildly toxic by ingestion and inhalation. Used to make other chemicals.
空気と水の反応
Highly flammable. Insoluble in water.
反応プロフィール
Vigorous reactions, sometimes amounting to explosions, can result from the contact between aromatic hydrocarbons, such as PROPYL BENZENE, and strong oxidizing agents. They can react exothermically with bases and with diazo compounds. Substitution at the benzene nucleus occurs by halogenation (acid catalyst), nitration, sulfonation, and the Friedel-Crafts reaction.
危険性
Flammable, moderate fire risk.
健康ハザード
May be harmful by inhalation, ingestion, or skin absorption. May cause eye and skin irritation.
火災(zāi)危険
Special Hazards of Combustion Products: Vapor may travel considerable distance to a source of ignition and flashback.
環(huán)境運(yùn)命予測(cè)
Biological. A Nocardia sp., growing on n-octadecane, biodegraded propylbenzene to
phenylacetic acid (Davis and Raymond, 1981). Propylbenzene was cometabolized by a strain of
Micrococcus cerificans to cinnamic acid (Pitter and Chudoba, 1990).
Estimated half-lives of propylbenzene (0.8 μg/L) from an experimental marine mesocosm
during the spring (8–16 °C), summer (20–22 °C), and winter (3–7 °C) were 19, 1.3, and 11 d,
respectively (Wakeham et al., 1983).
Photolytic. A rate constant of 3.7 x 10
-9 L/molecule?sec was reported for the reaction of
propylbenzene with OH radicals in the gas phase (Darnall et al., 1976). Similarly, a room
temperature rate constant of 5.7 x 10
-12 cm
3/molecule?sec was reported for the vapor-phase
reaction of propylbenzene with OH radicals (Atkinson, 1985). At 25 °C, a rate constant of 6.58 x
10-12 cm
3/molecule?sec was reported for the same reaction (Ohta and Ohyama, 1985).
Chemical/Physical. Propylbenzene will not hydrolyze because it does not contain a
hydrolyzable functional group (Kollig, 1993).
プロピルベンゼン 上流と下流の製品情報(bào)
原材料
準(zhǔn)備製品