P-tert butyl catechol CAS  98-29-3 is a white or light yellow powder with the molecular formula C10H14O2, soluble in methanol, carbon tetrachloride, benzene, ether, ethanol, and acetone. Derived from the reaction of tert butanol with catechol or from the reaction of catechol with isobutene. Can be used as a thermosensitive polymerization inhibitor.

Chinese name: p-tert butyl catechol

Foreign name: p-tert-butylcatecho

Nickname: 4- (1,1-dimethylethyl) -1,2-benzenediol; P-tert butyl catechol

Chemical formula: C10H14O2

Molecular weight: 166.22

CAS login number: 98-29-3

Melting point: 52-57

Boiling point: 285 ℃

Water solubility: slightly soluble in hot water

Density: Relative density (water=1) 1.0490 (60/25 ℃)

Appearance: Colorless crystal flash point 151 ℃

Application: A highly effective polymerization inhibitor for olefin monomers. It can also be used as an antioxidant, insecticide, stabilizer, etc.

Physical and chemical properties

Appearance and properties: White or slightly yellow or slightly red solid.

Main use: Used as a polymerization inhibitor and antioxidant. UN: 2811, toxic solid, organic matter, not specifically listed

Melting point: 52-57 Boiling point: 285

Relative density (water=1): 1.05

Solubility: easily soluble in hot water, soluble in cold water, slightly soluble in methanol, n-octanol.

Danger of combustion and explosion

Conditions for avoiding sexual contact: light.

Flammability: Flammability (red): 1. Fire hazard classification according to regulations: C

Flash point (℃): 151

Appearance white to light yellow powder or ash content ≤ 0.2%

Viscous liquid, no mechanical impurities, polymerization inhibition effect 82 ℃, styrene initiated polymerization time ≥ 30min

Mass fraction of TBC ≥ 99.0% Melting point ≥ 53 ℃

Purpose

This product has a polymerization inhibition efficiency 25 times higher than that of hydroquinone at 60 ℃, making it a highly effective polymerization inhibitor for olefin monomer distillation or storage and transportation, especially for styrene; Butadiene; Chlorobutadiene; Isoprene and other monomers. Also used for vinyl chloride; Vinylpyridine; α- Olefins; Nonene; Cyclopentadiene; Isoprene; Acrylic acid; Methacrylic acid and its esters; Chlorinated olefins; Polyurethane, etc. This product is also used as polyethylene; Polypropylene; Polychlorobutadiene; Synthetic rubber; Antioxidants for polymers such as nylon, as well as ethyl cellulose used as oil and its derivatives; Lubricating oil; Caprolactam; Maleic anhydride; Tin and other antioxidants with various compounds such as metal soaps. In addition, it can also be used as a passivation agent for polyurethane catalysts; Stabilizers for insecticides and various organic compounds.

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