HNOC

An adverse effect that does not meet the criteria for any defined GHS hazard class but still warrants warning.

A Hazard Not Otherwise Classified covers an adverse physical or health effect identified during classification that does not meet the criteria of any defined GHS class.

HNOCs are disclosed in Section 2 of the safety data sheet but do not require a pictogram or signal word, since neither is defined for them.

They appear as physical HNOC or health HNOC depending on the nature of the effect.

Related terms

• GHSThe UN system that standardises how chemical hazards are classified, labelled and described on safety data sheets.
• Hazard classThe nature of a chemical hazard under GHS: flammable liquid, skin corrosion, carcinogenicity and so on.
• SDS Section 2Hazard identification: the GHS classification, signal word, hazard statements and pictograms.

A plain-English explanation, not legal advice. Figures are the federal baseline; your state may differ, so see the state-by-state requirements.