1-ペンタンチオール 化学特性,用途語,生産方法
外観
無色～ほとんど無色、液体
化学的特性
clear colorless liquid; meaty aroma. slightly soluble in water, easily soluble in alcohol and ether.
使用
1-Pentanethiol can be used as additives for hair coloring agents.
製造方法
1-Pentanethiol is synthesized from n-pentyl alcohol and hydrogen sulfide catalyzed by thorium dioxide.
一般的な説明
1-Pentanethiol appears as a clear colorless to light-yellow liquid with an offensive odor. Flash point 65°F. Less dense than water and insoluble in water. Hence floats on water. Vapors are heavier than air. May be toxic by inhalation.
空気と水の反応
Highly flammable. Insoluble in water.
反応プロフィール
1-Pentanethiol is incompatible with oxidizing agents, reducing agents, alkali metals, calcium hypochlorite, concentrated nitric acid .
健康ハザード
Inhalation may cause nausea because of offensive odor. Contact with eyes or skin causes slight irritation. Ingestion may cause vomiting.
安全性プロファイル
Moderately toxic by inhalation. A weak sensitizer and allergen. Local contact may cause contact dermatitis. A flammable liquid and dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidming materials. Hypergolic reaction with concentrated nitric acid. To fight fire, use foam, CO2, dry chemical. See also MERCAPTANS
純化方法
Dissolve the thiol in aqueous 20% NaOH, then extract with a small amount of diethyl ether. The aqueous solution is acidified slightly with 15% H2SO4, and the thiol is distilled out, dried with CaSO4 or CaCl2, and fractionally distilled under nitrogen. [Ellis & Reid J Am Chem Soc 54 1674 1932, Beilstein 1 IV 1453.]
1-ペンタンチオール 上流と下流の製品情報
原材料
準備製品