Deutsche Gesellschaft für
Technische Zusammenarbeit (GTZ) GmbH
Convention Project Chemical Safety
29
How to allocate the R-phrases to hazard groups?
In addition, check hazard group S
>
Basic Yellow
= R41
Decide
on one group from hazard group A to E
Be
careful to accurately match R-phrases, such as R22
> Basic Yellow = R22 and R41
Also respect combinations of R-phrases,
such as R20/21/22
>
Basic Yellow
= R50/53
If a number of R-phrases appear in different hazard
groups,
always choose the higher group
always choose the higher group
> Basic Yellow = hazard group C
R50/53 does not belong to any
hazard group, because it does not refer to hazards to human health