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Molecular formula: C15H24O2
molecular weight: 220.36
CAS:
density: 1.048 (20 ° C)
melting point: 71 ° C
Boiling Point: 265 ° C
flash point: 126.7 ° C
index : 1.4859 (75 ° C)
toxicity LD50 (mg / kg): rat oral 1800.
characters: the white to light yellow crystalline powder or tablet bar. No olfactory tasteless.
solution: do not dissolve in water, propylene glycol, glycerin, 20 ° C in other solubility in solvents (%): 25 of methanol, benzene 40, 20 ethanol, isopropanol 20, 43 toluene, methyl ethyl ketone 45, 40 acetone, petroleum ether 50 , corn oil and soybean oil 40 to 50.
purposes: respect for the polyolefin plastic, polyester, polystyrene, cellulose of resin, ABS \ PVC and other anti-oxidants and thermal stability; In respect for natural rubber and diene rubber, butadiene - styrene, butyl, chloroprene, isoamyl, butadiene, acrylonitrile-butadiene, B Bingdeng Anti-aging agents and synthetic rubber anti-degradation; also can be used as foodstuffs (such as seafood and gum, etc.), petroleum products, feed antioxidants, and is provided to allow the use of food antioxidants; Lubricant Additives can improve stability and prevent slurry viscosity increase and production; use as a fuel additive to prevent the storage process of oxidation and polymerization modification to enhance stability; also for oil, spices, soap, cosmetics, paint and other unsaturated fatty acids antioxidants; this non-toxic materials, discoloration, clean, strong antioxidant capacity, cheap; volatile .
preparation or sources: (1) - methyl phenol and isobutene as raw materials, sulfuric acid or phosphoric acid as catalyst, alumina for dehydrating agent, at 65 ° C under pressure and the reaction of crude products, and in the isolated, washed and then vacuum distillation, and then in ethanol - crystallization of a system. (2) m-cresol and butane - butene fractions for the four carbon materials in the system.
Note: This chemical phenol similar nature, but because of 2 - and 6 - possession of alkyl, 3 - and 5 - position it is very difficult to alkylation, at the same time as 2 - and 6 - Oil-tert-butyl - existence, hydroxy affected by the activity, but a phase transfer Methods can still generate ether. Still halocarbons. The palladium catalyst, in the next 250 to 300 ° C can be ammoniated to generate 2,6 - di-tert-butyl - aniline; Oxidation can be to generate one or quinone, the goods in the air due to discoloration caused by oxidation.
categories: Antioxidants
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