Hazard search
o-Tolidine
- CAS number
- 119-93-7
- Also known as
- 3,3'-Dimethylbenzidine · ortho-Tolidine
UK workplace exposure limits
Our data hold no UK limit for this substance.
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| NIOSH 5013 o-Tolidine-based dyes by HPLC/UV Method document (opens in a new tab) | Active (pump) | 5µm PTFE filter in cassette | 225-17A 225-3LF 225-1 | |
| OSHA 71 o-Dianisidine, 4.4-Methylenebis(2-chloroaniline), and o-Tolidine by GC-ECD Method document (opens in a new tab) | Active (pump) | Coated 37mm glass fibre filters in cassette | GC-ECD | 225-9004 225-1 |
Methods and limits as published by their agencies and summarised by SKC; check the current method and the limit that applies to you before sampling.
Source: SKC Ltd (UK), Hazard Search, used with SKC's permission (opens in a new tab); SKC Inc. (USA), Sampling Guides, used with SKC's permission (opens in a new tab)