Making of Detergent
Preparation of Sodium Alkyl Sulphate
Stage 1: Sulphonation of alcohol
The long chain alcohol is reacted with concentrated sulphuric acid to form alkyl sulphonic acid.
Stage 2: Neutralization
The alkyl sulphonic acid is then neutralised sodium hydroxide solution to produce sodium alkyl sulphate salt, which is detergent .
Preparation of Sodium Alkyl Benzene Sulphonate
Stage 1: Alkylation
The long chain alkene is reacted with benzene to form alkylbenzene.
Stage 2: Sulphonation
Sulphonation of alkylbenzene:
The alkylbenzene is reacted with concentrated sulphuric acid to form
alkylbenzene sulphonic acid.