The UK Health and Safety Executive (HSE) has published GB MCL Agency Opinions for the following substances:

1. Nonylphenol, branched and linear, ethoxylated (with average molecular weight < 352 g/mol) [includes orthometa-, para- isomers or any combination thereof]

2. Nonylphenol, branched and linear, ethoxylated (with 352 g/mol ≤ average molecular weight < 704 g/mol) [includes ortho-, meta-, para- isomers or any combination thereof]

3. Nonylphenol, branched and linear, ethoxylated (with 704 g/mol ≤ average molecular weight ≤ 1540 g/mol) [includes ortho-, meta-, para- isomers or any combination thereof]

4. Hydrogen sulphide

5. 1-phenylethan-1-one (1-phenylethylidene)hydrazone

6. Diuron

7. Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide

8. Clothianidin

9. Benzyl alcohol

10. Dimethyl propylphosphonate