4-трет-бутилкатехола химические свойства, назначение, производство
Описание
Para-tertiary butyl catechol is specially prepared by
reacting the impure catechol fraction with tertiary
butyl alcohol. Used for its various properties (inhibition
of polymerization and as an antioxidizing agent)
in the manufacture of rubber, plastics and paints, in
the preparation of petrolatum products, and as an
antioxidant in oils, it may induce vitiligo.
Химические свойства
white to cream flakes
Использование
Polymerization inhibitor for styrene-butadiene and other olefins.
Inhibitor-remover packings and ready-to-use, disposable prepacked columns offer a quick and convenient means of removing small amounts of inhibitors which are added to reagents or solvents that would otherwise be unstable (e.g., they may polymerize, oxidize or darken) on storage.
The inhibitor removers are useful in applications which require that the stabilizer or inhibitor [i.e., hydroquinone (HQ), hydroquinone monomethyl ether (MEHQ, 4-methoxyphenol) or 4-tert-butylcatechol (TBC)] be removed prior to use.
Общее описание
4-tert-Butylcatechol,in the presence of O2 catalyzed by tyrosinase, yields 4-tert-butyl-o-benzoquinone. Electrochemical oxidation of 4-tert-Butylcatechol in the presence of 4-hydroxycoumarin as nucleophile has been studied using cyclic voltammetry and controlled-potential coulometry. It undergoes electrochemical trimerization via anodic oxidation and mechanism of trimerization has been studied using cyclic voltammetry and controlled-potential coulometry.
Опасность
Toxic by ingestion and skin absorption.
Контактные аллергены
p-tert-Butyl catechol is specially prepared by reacting
the impure catechol fraction with tertiary butyl alcohol.
It is used for its various properties (inhibitor of
polymerization and antioxidizing agent) in the manufacture
of rubber, plastics, and paints, in the preparation
of petrolatum products, and as an antioxidant in
oils. It may induce vitiligo.
Профиль безопасности
A poison by
intravenous route. Moderately toxic by
ingestion and skin absorption. A severe skin
and eye irritant. Mutation data reported.
Combustible when exposed to heat or
flame. To fight fire, use Con, dry chemical,
fog, mist. When heated to decomposition it
emits acrid and irritating fumes
Методы очистки
Distil it in a vacuum, then recrystallise it from pentane or pet ether (or *C6H6). [Beilstein
4-трет-бутилкатехола препаратная продукция и сырье
сырьё
препарат