Phenol → o-Phenolsulfonic acid

HRID 280073Notes

Reaction equation

HRID 280073 reaction equation
[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[S:8](=O)(=[O:11])([OH:10])[OH:9]>>[CH:5]1[CH:4]=[CH:3][C:2]([S:8]([OH:11])(=[O:10])=[O:9])=[C:1]([OH:7])[CH:6]=1

Participants

3

Reactant 2

HCID 996PhenolHCID 1118Sulfuric Acid

Product 1

HCID 11867o-Phenolsulfonic acid

Procedure

100 g of phenolsulphonic acid (produced by a four-hour sulphonation of 250 parts of phenol with 270 parts of 98% sulphuric acid) are slowly reacted with a solution of 61.5 g of dimethylolurea in 75 g of water at 40° C. and the mixture is stirred for a few hours until a clear solution forms. The solution is then neutralised with 30% aqueous sodium hydroxide and then concentrated. About 150 g of a light coloured salt are produced.

Sources & evidence

ORD record
ord-d8515fe7702f484caff1c0e69ceec702
Source dataset
uspto-grants-1986_05
Patent number
US04588448

Reaction notes

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