§ Mr. Laurence Robertson
To ask the Secretary of State for Trade and Industry if he will make a statement on the requirements on companies to disclose the chemicals which they use in household cleaning products. 
§ Dr. Howells
The safety of chemical products, such as cleaning products, is governed by the Chemicals (Hazard Information and Packaging for Supply) Regulations 1994. These Regulations require that manufacturers must assess a chemical product for its health effects (toxicity, irritancy etc.). If dangerous, the product must then be labelled with a warning symbol and phrases indicating the dangers. The particular chemical(s) which cause the product to be classified must be named on the label.
The Regulations also require that all potentially dangerous chemicals supplied to the public must be in packaging which is properly labelled and contains warnings about the potential hazards, and gives brief advice on suitable precautions. Manufacturers or suppliers of cleaning products would also be required to give details of how to use the product safely.