STH the P-xylol for hromatogr. (3 ml)
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STH the P - xylol for hromatogr. (3 ml)
Xylols (dimethylbenzenes) (CH3)2C6H4, pier. m 106,16; bestsv. liquid (tab. 1) with benzene smell. Mix up with ethanol, diethyl ether, acetone, chloroform, benzene; r - rimost in water less than 0,015% . Xylols - typical aromatich. hydrocarbons; are easily alkylated, chlorinated, sulphurized, are nitrated; ease of substitution decreases among: m xylol> au xylol> p - xylol. From xylols make row important pry. products. So, partial oxidation of xylols (HNO3, Cr2O3 or KMnO4) synthesize methyl - benzoic to - you, turning at will oxidize. decarboxylation in cresols, oxidation of au xylol in vapor phase at 450 - 600'C (kat. - V2O5 on SiO2) - phthalic anhydride. Deep oxidation about - m - or p - xylols action of HNO3 or O2vozdukha in liquid phase at 100 - 300 °C and 4 MPas (kat. - Mn bromides or With) receive sootv. phthalic, izoftalsvy and tsrsftalevy to - you. Nitration of mix of xylols receive mix of isomeric dimethylnitrobenzene, recovery the cut is synthesized by xylidines. Pyrolysis of n - xylol at 800 - 1000 °C receive poly - l xylylene. Xylols are condensed with CH2O, forming polymers about pier. m
Xylols (dimethylbenzenes) (CH3)2C6H4, pier. m 106,16; bestsv. liquid (tab. 1) with benzene smell. Mix up with ethanol, diethyl ether, acetone, chloroform, benzene; r - rimost in water less than 0,015% . Xylols - typical aromatich. hydrocarbons; are easily alkylated, chlorinated, sulphurized, are nitrated; ease of substitution decreases among: m xylol> au xylol> p - xylol. From xylols make row important pry. products. So, partial oxidation of xylols (HNO3, Cr2O3 or KMnO4) synthesize methyl - benzoic to - you, turning at will oxidize. decarboxylation in cresols, oxidation of au xylol in vapor phase at 450 - 600'C (kat. - V2O5 on SiO2) - phthalic anhydride. Deep oxidation about - m - or p - xylols action of HNO3 or O2vozdukha in liquid phase at 100 - 300 °C and 4 MPas (kat. - Mn bromides or With) receive sootv. phthalic, izoftalsvy and tsrsftalevy to - you. Nitration of mix of xylols receive mix of isomeric dimethylnitrobenzene, recovery the cut is synthesized by xylidines. Pyrolysis of n - xylol at 800 - 1000 °C receive poly - l xylylene. Xylols are condensed with CH2O, forming polymers about pier. m
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STH the P-xylol for hromatogr. (3 ml)
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