A technique of whitening fibres or fabrics or depriving a coloured material. This can be introduced about by using numerous bleaching-brokers. Usually chlorine is used for cotton and other vegetable fibres and peroxide and sulphur dioxide for animal fibres. The chemical products that are most commonly utilised are oxygen and https://moirai40516.theobloggers.com/42167327/cotton-manufacturing-no-further-a-mystery