Sixteen sections
The order is: identification, hazard identification, composition, first aid, firefighting, accidental release, handling and storage, exposure controls and personal protection, physical and chemical properties, stability and reactivity, toxicology, ecology, disposal, transport, regulatory information, other information. The order is fixed; leaving a section blank does not mean "no information" — it must carry a reason.
Joining the sheet to the inventory
On its own the sheet is worth little. The value lies in tying its hazard statements (H codes) to the substance in the inventory, to the job where it is used, and to the protective equipment issued for that job. Once linked, three questions answer themselves: who works with this substance, what protection was issued, and does the workplace need air monitoring.
The chemical inventory also feeds explosion protection and major-accident scenarios; one list serves three separate obligations.