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.

Stage 3: Neutralization

Neutralisation: 
The alkylbenzene sulphonic acid is then neutralised sodium hidroxide solution to produce
alkylbenzene sulphonate salt, which is detergent.


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