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3,4-Dimethylphenol. Other names 4-Hydroxy-o-xylene. Identifiers CAS Number. ... Boiling point: 227 °C (441 °F; 500 K) Hazards GHS labelling: Pictograms. Signal word.
The methylation is carried out by contacting gaseous phenol and methanol at elevated temperatures in the presence of a solid acid catalyst: [2] [3] C 6 H 5 OH + 2 CH 3 OH → (CH 3) 2 C 6 H 3 OH + 2 H 2 O. Challenges associated with the production is the similarity of the boiling points of cresols and this xylenol.
Density (g cm-3) Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source; Aniline: 184.3 3.69 –5.96 –5.87 K b & K f [1] Lauric ...
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
These residue contains a few percent by weight of xylenols as well as cresols and phenol. The main xylenols in such tar are the 3,5-, 2,4, and 2,3- isomers. 2,6-Xylenol is produced by methylation of phenol using methanol in the presence of metal oxide catalysts: [1] C 6 H 5 OH + 2 CH 3 OH → (CH 3) 2 C 6 H 3 OH + 2 H 2 O
Diphenylmethanol is the organic compound with the formula (C 6 H 5) 2 CHOH. Also known as benzhydrol , it is a white solid and the parent member of a large class of diaryl alcohols. Preparation
This alkylation provides a means to separate 2,4-xylenol from 2,5-xylenol since 2,4-dimethyl-6-tert-butylphenol is insoluble in 10% NaOH but 2,5-dimethyl-6-tert-butylphenol is soluble. Subsequent to separation, the tert-butyl group can be removed in strong acid. [1]
Boiling point: 191 °C; 376 °F; 464 K Solubility in water. 31 g dm −3 (at 40 °C) ... C 6 H 5 OH + CH 3 OH → CH 3 C 6 H 4 OH + H 2 O. Over-methylation gives xylenol.