Rank: Forum user 
|
I was looking at an SDS recently for nitric acid solutions in water. According to its classification it is Accute Toxic cat.3 (inhaalation). It made me think. Is there a concentration below which that category no longer applies? After all, when dilute it doesn't give off enough vapours to form a significant inhalation hazard. Where could I find this type of infomation? (It's certainly not in the SDS).
|
|
|
|
|
|
Rank: Super forum user 
|
Yes. Section 2 of the SDS tells you the hazard classification of the solution. Section 3 of the SDS tells you the hazard classifications of the ingredients. There as, as you have suggested, concentration limits which affect how section 3 translates to section 2. These are described in an incredibly complicated EU document about REACH which I will admit is not a "favourite" of mine and therefore I don't happen to have a link to hand :-)
|
|
|
|
|
|
Rank: Super forum user 
|
Kate is eluding to Annex VI of the Classification Labelling and Packaging Regulations EC 1272/2008 aka CLP.
This lists along with the harmonised substance classifications an item termed Specific Concentration Limits - these are the varying thresholds that drop particular hazard classification as the concentration of the substance decreases. The last update to writing an SDS EU 2020/878 requires Specific Concentration Limits be listed in Section 3.
echa.europa.eu the European Chemicals Agency web site has a home page with links to substance information. When you search for a substance you can see these concentration limits (when available) under classification.
|
 2 users thanked Roundtuit for this useful post.
|
Kate on 20/08/2022(UTC), Kate on 20/08/2022(UTC)
|
|
|
Rank: Super forum user
|
Kate is eluding to Annex VI of the Classification Labelling and Packaging Regulations EC 1272/2008 aka CLP.
This lists along with the harmonised substance classifications an item termed Specific Concentration Limits - these are the varying thresholds that drop particular hazard classification as the concentration of the substance decreases. The last update to writing an SDS EU 2020/878 requires Specific Concentration Limits be listed in Section 3.
echa.europa.eu the European Chemicals Agency web site has a home page with links to substance information. When you search for a substance you can see these concentration limits (when available) under classification.
|
2 users thanked Roundtuit for this useful post.
|
Kate on 20/08/2022(UTC), Kate on 20/08/2022(UTC)
|
|
|
Rank: Super forum user
|
The information on how to go about finding the Dervived No Effect Limit (DNEL) from exposure limit data can be further explained in this document...
https://www.ecetoc.org/wp-content/uploads/2014/08/ECETOC-TR-110-Guidance-on-assessment-factors-to-derive-a-DNEL.pdf
|
|
|
|
|
|
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.