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P-Toluic Acid, CAS No 99-94-5

P-Toluic Acid, CAS No 99-94-5

p-Toluic acid is colorless crystal or white crystalline powder, and it is used in dyes, medicines, pesticides and plastics. We are a professional p-Toluic acid manufacturer and supplier in China. If you are looking for Propargyl alcohol, Jinan Great Chemical Industry Co.,Ltd is your good choice. For more information about p-Toluic, please don’t hesitate to contact sale001@chemgreat.com .

Description

Description

P-toluic acid is a white crystal. Used in organic synthesis intermediates, pesticide industry to prepare fungicide phosphoramide, can also be used in perfumery and film.

Preparation

1. It is obtained by catalytic oxidation of p-xylene with air. When the atmospheric pressure method is used, xylene and cobalt naphthenate can be added to the reaction pot, and the air is introduced into the reactor when heated to 90 ° C, the temperature is controlled at 110-115 ° C, the reaction is about 24 h, and about 5% of the para-xylene is converted into p-Methylbenzoic acid. Cool to room temperature, filter, filter cake washed with p-xylene and dried to give p-methylbenzoic acid.

2. It is obtained by oxidation of p-isopropyl toluene with nitric acid. 20% nitric acid and p-isopropyl toluene were mixed, stirred and heated to 80-90 ° C, reacted for 4 h, and then heated to 90-95 ° C for 6 h. After cooling, filtration, the cake was recrystallized from toluene to give p-methylbenzoic acid in a yield of 50-53%.

Parameter

Chemical   name

p-Toluic   acid

Another   name

4-METHYLBENZOIC ACID

4-METHYLBENZOIC ACID ZONE REFINED
4-TOLUIC ACID

Molecular   Formular

C8H8O2

Molecular   Weight

135.1405

Cas No.

99-94-5

EINECS No.

202-803-3

Appearance

Colorless   crystal or white crystalline powder

Purity

99%

Density

1.2±0.1   g/cm3

Melting   point

179   °C

Boiling   point

274-275 °C(lit.)

Package

25kg/drum

Storage   Conditions

Cool,dry   and hermetic place


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