The preparation of phenol itself is by fusing the sodium salt of the sulfonic acid with sodium hydroxide: C6H5SO2.ONa + 2NaOH → C6H5ONa + Na2SO3 + H2O The phenol is then liberated by sulfuric acid: 2C6H5ONa + H2SO4→ 2C6H5OH + Na2SO4 Reactions of phenol include: 1. ...
The residue is cooled, acidified with 20% (v/v) H2SO4, and the phenol is separated, dried with CaSO4 and fractionally distilled under reduced pressure. It is then fractionally crystallised several times from its melt [Andon et al. J Chem Soc 5246 1960]. Purification via the benzoate has ...
In an example, 40 parts linseed oil and 100 parts PhOH were mixed dropwise with 1 part of 98% H2SO4, reacted for 2 hr at 130 - 170 degrees, mixed with 110 parts of 37% aq. HCHO and 40 parts of a 28% aq. NH3 soln., dild. (60% resin concn.) with toluene, and the ...
2C6H5ONa + H2SO4→ 2C6H5OH + Na2SO4 Reactions of phenol include: 1. Replacement of the hydroxyl group with a chlorine atom using phosphorus(V) chloride. 2. Reaction with acyl halides to form esters of carboxylic acids. 3. Reaction with haloalkanes under alkaline conditions to give mi...
In an example, 40 parts linseed oil and 100 parts PhOH were mixed dropwise with 1 part of 98% H2SO4, reacted for 2 hr at 130 - 170 degrees, mixed with 110 parts of 37% aq. HCHO and 40 parts of a 28% aq. NH3 soln., dild. (60% resin concn.) with toluene, and the ...
In an example, 40 parts linseed oil and 100 parts PhOH were mixed dropwise with 1 part of 98% H2SO4, reacted for 2 hr at 130 - 170 degrees, mixed with 110 parts of 37% aq. HCHO and 40 parts of a 28% aq. NH3 soln., dild. (60% resin concn.) with toluene, and the ...
core H2SO4 or oleum at 100-150 degrees C for 30 mins., (2) addn. of 0.65-0.80 mol. formalin with cooling to maintain 100 degrees C for 30 mins. (3) neutralisation to pH 7-8 with alkali hydroxide, and (4) diluting with water to a working concn. of 20% solids, giving a ...
core H2SO4 or oleum at 100-150 degrees C for 30 mins., (2) addn. of 0.65-0.80 mol. formalin with cooling to maintain 100 degrees C for 30 mins. (3) neutralisation to pH 7-8 with alkali hydroxide, and (4) diluting with water to a working concn. of 20% solids, giving a ...