3-метилбенз [j] акантрен

Описание

3-Methylcholanthrene (3-MC) is a member of the polycyclic aromatic hydrocarbon (PAH) family and is used as an experimental cancer research chemical. As other PAHs, 3-MC might be found in trace quantities in coal tar and heavy-end petroleum hydrocarbons.

Химические свойства

3-Methylcholanthrene is a solid that crystallizes from benzene and ether as pale yellow prisms. 3-methylcholanthrene is insoluble in water and soluble in alcohol. It is combustible, and can react with oxidizing materials.

Использование

3-Methylcholanthrene has been used to assess its tumor initiation activity by Bhas 42 cell transformation assay. It has also been used to induce the activity of cytochrome P450.

Определение

ChEBI: A pentacyclic ortho- and peri-fused polycyclic arene consisting of a dihydrocyclopenta[ij]tetraphene ring system with a methyl substituent at the 3-position.

Общее описание

Yellow crystals or solid.

Реакции воздуха и воды

Insoluble in water.

Профиль реактивности

3-METHYLCHOLANTHRENE can react with oxidizing materials. Ozone and chlorinating agents oxidize 3-METHYLCHOLANTHRENE.

Опасность

Powerful carcinogen.

Пожароопасность

Flash point data for 3-METHYLCHOLANTHRENE are not available; however, 3-METHYLCHOLANTHRENE is probably combustible.

Профиль безопасности

Suspected carcinogen with experimental carcinogenic, neoplastigenic, and tumorigenic data. Poison by intravenous and intraperitoneal routes. Experimental teratogenic and reproductive effects. Human mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes.

Возможный контакт

The coke-oven plant is the principal source of coal tar. The hot gases and vapors produced during the conversion of coal to coke are collected by means of a scrubber, which condenses the effluent into ammonia, water, crude tar, and other by-products. Crude tar is separated from the remainder of the condensate for refining and may undergo further processing. Employees may be exposed to pitch and creosote in metal and foundry operations; when installing electrical equipment; in construction, railway, utility; and briquette manufacturing.

Канцерогенность

3-Methylcholanthrene is a rapid, all-around neoplastic agent and a potent liver tumorigen.

Экологическая судьба

3-MC, when released to soil, adsorbs strongly to the soil and does not leach. It does not biodegrade or hydrolyze significantly but may evaporate from dry soil. If released to water, it is expected to adsorb strongly to sediment and to bioconcentrate in aquatic organisms. If released into the atmosphere, it may be subject to direct photolysis because it absorbs strongly in the ultraviolet (UV) spectrum of light. It may also react with peroxyl radicals already present in the atmosphere. Its estimated half-life in the atmosphere is 2.8 h. Considering an octanol/ water log concentration ratio of 6.42, a bioconcentration factor of 45 000 has been estimated.

Перевозки

UN1136 Coal tar distillates, flammable, Hazard Class: 3; Labels: 3-Flammable liquid

Несовместимости

Incompatible with strong 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. Phenols, such as creosote react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has pKa = 9.88). These materials are incompatible with strong reducing agents such as hydrides, nitrides, alkali metals, and sulfides. Flammable hydrogen gas is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases. Such heating may initiate polymerization of the organic compound. Phenols are sulfonated very readily (e.g., by concentrated sulfuric acid at room temperature). The reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid

Утилизация отходов

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.