The Control of Substances Hazardous to Health (COSHH) Regulations, issued by the Health and Safety Executive, cover many of the materials used in concrete and in construction (including cement, admixtures etc.).
Safety Sheets are prepared by suppliers giving guidance on the storage and handling (and possibly disposal) of such materials. The materials should always be used in accordance with the supplier’s instructions.
For further information see individual Safety Sheets or The Health and Safety Executive web site.