Hazards have attached precautions 

Hazards for the SDS come in two varieties: Purple book hazards for section 2 and associated orange book hazards for section 14.

Precautions come in the GHS variety or hand edited by you. In fact, you must edit those precautions which contain ellipses (...). Any precaution may be reworded to suit the needs of the SDS.

Precautions may be tagged for any section including 14.

Background

When a substance gets its intrinsic physical properties during data entry, the GHS classification changes and SDS hazards (except for manually added hazards and/or edited hazards) are regenerated from scratch every time you click [Save]. 

All GHS hazards and precautions are represented as Reference Hazards and Reference Precautions. Each reference hazard has the correct reference precautions attached as per the purple book. It also has the correct reference pictograms (if any) attached. The signal word - danger or warning - is associated with the GHS hazard.

If the reference hazard has an associated UNRTDG transport hazard, the transport pictogram(s) if any will also be attached. 

Some jurisdictions have their own home-grown hazards. These exist in the system as reference hazards for particular jurisdictions. They too may have pre-associated precautions and pictograms. Jurisdictional hazards automatically replace GHS hazards in that jurisdiction if they use the same H-code number. Otherwise they need to be added manually.

Jurisdictions which don't recognise certain GHS hazards may have those hazards automatically excluded from the SDS displayed in their jurisdiction.

Each single reference hazard (of any flavour) may have up to two pictograms for the GHS hazard plus up to another two pictograms for its associated DG class - plus any number of GHS reference precautions.

In addition to hazards with their associated precautions and pictograms there are stand-alone Phrases which are arbitrary text and may appear anywhere you like. These are potentially shareable with other users.

All this is background to help understand the theory of operation.

Theory of operation

• The system auto-generates the SDS by copying GHS Reference Hazards with their pre-associated reference precautions/pictograms
• The DANGER or WARNING signal word on the SDS comes from the related GHS Reference Hazards. If you adjust it manually up or down it will be reset automatically - unless you have inserted a manual hazard with a related signal word.
• Other hazards such as unique jurisdictional hazards and DG-only hazards must be attached manually by the author
• All hazards - including manually added ones - are merely 'proposed' and must be confirmed before the SDS can become effective. There is an Agreed field for this on each hazard in the SDS
• Auto-generated hazards, precautions and pictograms are tagged as such and, unless Agreed, get deleted and reattached each time the substance is saved. 
• If auto-generated hazards have been edited by the author, they remain untouched by the system and must be manually deleted if they are not required.
• Likewise, manually attached hazards, precautions and pictograms never get deleted by the system They too must be deleted manually. 
• Precautions, pictograms and phrases may be placed in any section and tagged for a particular jurisdiction or left untagged for all jurisdictions. For example, one section might have a dozen phrases, eleven of which are tagged for different jurisdictions and one might be un-tagged and appear everywhere the SDS is displayed.
• If a phrase doesn't suit your needs, you can add a completely arbitrary precaution worded any way you like to any section and tag it with one of the action codes (prevention, response, storage, etc) and it will appear in the section you nominate and in section 2 under the correct action heading.
• Use existing phrases or write new ones as desired and add them to any section. They too can be jurisdictional.