In the previous post, we continued to share guidance for section 9 properties. The guidance is from the informal group on the revision of Section 9 of Annex 4, which met during the 26th session of the UN Sub-Committee of Experts on GHS on December 4-6, 2013. Section 9 of the GHS Safety Data Sheet (SDS) includes the physical/chemical properties of the product.
In this post, we conclude with guidance for the remainder of section 9 properties.
Lower and upper explosion/flammability limits:
- Not applicable to solids.
- For flammable liquids indicate at least the lower explosion limit.
- If the flash point is approximately > -25 °C, it might not be possible to determine the upper explosion limit at standard temperature. In that case, it is recommended to indicate the upper explosion limit at elevated temperature.
- If the flash point is > +20 °C, the same holds for both, the lower and upper explosion limit.
- Not applicable to gases, aerosols and solids.
- For mixtures: Indicate a value for the mixture itself if available, otherwise indicate the flash point(s) of those substances with the lowest flash point(s) as these are generally the main contributing ones.
- Applicable to gases and liquids only.
- For mixtures: Indicate a value for the mixture itself if available, otherwise indicate “no data available” because the auto-ignition temperature of the mixture may be lower.
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Photo by Lauri Rotko. Copyright European Chemicals Agency.