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

1. Ozone

2. Tetrairon tris(pyrophosphate)

3. 2-phenylpropene

4. Tetraphosphorus trisulphide

5. Pethoxamid

6. Dinitrogen oxide

7. Bis(N-hydroxy-N-nitrosocyclohexylaminato-O,O’)copper