1-メチルナフタレン 化学特性,用途語,生産方法
外観
無色～黄褐色, 澄明の液体
溶解性
水にほとんど不溶, エタノール, アセトンに可溶。エタノール及びアセトンに溶けやすく、水にほとんど溶けない
用途
ナフトエ酸原料、蛍光増白剤?界面活性剤原料、農薬溶剤 (化学工業日報社)
説明
1-methylnaphthalene is a methylnaphthalene carrying a methyl substituent at position. It is a polycyclic aromatic hydrocarbon (PAH). It is present in cigarette smoke, wood smoke, tar, asphalt, and at some hazardous waste sites. The main use of 1-methylnaphthalene is as a raw material for naphthoic acid, fluorescent whitening agents, and surfactants. It is also used as a raw material for dyestuff dispersants and heat transfer oils, and as a solvent for agricultural chemical.
化学的特性
1-methylnaphthalene is a colorless, bluefluorescing liquid with an earthy, phenolic odor. It is insoluble in water but dissolves in alcohol and ether. With a density greater than water, this combustible substance is obtained from coal tar and used in organic synthesis. It has a role as a carcinogenic agent and a plant metabolite.
天然物の起源
Methylnaphthalene was identified as a volatile component of cassava, roasted filberts and nectarines. Assorted types of lima, pinto, red kidney, black, navy and mung beans, soybeans, split peas and lentils were found to contain 1-methylnaphthalene at concentrations ranging from 2.8 to 49.2 ppb.
使用
The main uses of methylnaphthalene are as a raw material for dyestuff dispersants and heat transfer oils, and as a solvent for agricultural chemical. It is used in insecticide manufacturing; manufacture of phthalic anhydride; solvent in organic synthesis; asphalt and naptha constituent. It is also used as a test substance for the determination of the cetane number of diesel fuels. Further, it is employed in the preparation of 1-methylnaphthalene-d10 using deuterium oxide, sodium deuteroxide.
定義
ChEBI: 1-methylnaphthalene is a methylnaphthalene carrying a methyl substituent at position 1. It has a role as a carcinogenic agent and a plant metabolite.
製造方法
1-Methylnaphthalene is primarily derived from coal tar and petroleum oils. It is present in high-temperature coal tar in a concentration of 0.5% and is produced industrially from the methylnaphthalene fraction, which boils between 240 and 245 °C, by redistillation of the 2-methylnaphthalene filtrate following crystallization and separation of 2-methylnaphthalene.
一般的な説明
1-methylnaphthalene is a colorless liquid. Freezing point -22 °C (7.6 °F). Boiling point 240-243 °C (464-469 °F). Flash point 82 °C (180 °F). Denser than water. Derived from coal tar and used in organic synthesis.
空気と水の反応
Insoluble in water.
反応プロフィール
1-Methylnaphthalene is sensitive to heat. Reacts with strong oxidizing agents. Incompatible with oxygen and peroxides .
危険性
Moderate fire risk. Lower respiratory tractirritant and lung damage. Questionable carcinogen.
健康ハザード
Harmful if inhaled. Liquid causes irritation of the eyes and skin and skin photosensitization. Harmful if swallowed. Chronic exposure may cause liver or kidney damage.
火災危険
1-Methylnaphthalene is combustible.
発がん性
The carcinogenic potential of
1- and 2-methyl was investigated in B6C3F1 mice. Female
and male mice were given methylnaphthalene in their diets
for 81 weeks. The results indicated that 1-methyl was a
possible weak carcinogen in the lung of male but not female
mice whereas 2-methyl did not possess unequivocal
carcinogenic potential in these mice.
1-メチルナフタレン 上流と下流の製品情報
原材料
準備製品