Hazard search
o-Toluidine
- CAS number
- 95-53-4
- Also known as
- 1-Amino-2-methylbenzene · 2-Aminotoluene · 2-Methylaniline · o-Methylaniline · o-Toluidine (Amines, Aromatic) · ortho-Methylaniline · Orthotoluidine
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 0.1 ppm | |
| 8-hour TWA | 0.5 mg/m³ |
Notations
- Carc: carcinogen
- Sk: can be absorbed through the skin
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| MDHS 75 Aromatic amines by HPLC Method document (opens in a new tab) | Active (pump) | IOM & glass fibre filter (requires coating) (or coated filter in preloaded cassette) with Tenax tube (30/15mg) | HPLC | 225-70A 225-58F 225-9004 226-35 |
| MDHS 96 VOCs by solvent desorption and GC Method document (opens in a new tab) | Active (pump) | Silica gel tube (150/75mg) | GC-FID | 226-10 |
| MDHS 104 VOCs by solvent desorption and GC Method document (opens in a new tab) | Active (pump) | Silica gel tube (150/75mg) | 226-10 | |
| NIOSH 2002 Aromatic amines by GC-FID Method document (opens in a new tab) | Active (pump) | Silica gel tube (150/75mg) | GC-FID or GC-NSD | 226-10 |
| NIOSH 2017 Aniline, o-Toluidine, & Nitrobenzene by GC-FID Method document (opens in a new tab) | Active (pump) | Coated glass fibre filter in preloaded cassette with silica gel tube (520/260mg) | GC-FID | 225-9004 226-15 225-1 |
| OSHA 73 o-, m- and p-Toluidine by GC-ECD Method document (opens in a new tab) | Active (pump) | Two acid-treated glass fibre filters in preloaded cassette | GC-ECD | 225-9004 225-1 |
| Non-agency o-Toluidine by Colorimetric analysis | Direct-reading | Gastec detector tube | 810-181 |
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)