Hazard search
Methyl chloride
- CAS number
- 74-87-3
- Also known as
- Chloromethane · Chloromethane (methylchloride) · Methyl chloride (Chloromethane) · Monochloromethane
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 50 ppm | |
| 8-hour TWA | 105 mg/m³ | |
| 15-minute STEL | 100 ppm | |
| 15-minute STEL | 210 mg/m³ |
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| MDHS 96 VOCs by solvent desorption and GC Method document (opens in a new tab) | Active (pump) | Two charcoal tubes in series (front 400/200mg, back 100/50mg) | GC-FID | 226-09 226-01 |
| MDHS 104 VOCs by solvent desorption and GC Method document (opens in a new tab) | Active (pump) | Two charcoal tubes in series (front 400/200mg, back 100/50mg) | 226-09 226-01 | |
| NIOSH 1001 Methyl chloride by GC-FID Method document (opens in a new tab) | Active (pump) | Two charcoal tubes in series (front 400/200mg, back 100/50mg) | GC-FID | 226-09 226-01 |
| ASTM D 5466 | GC-MS | |||
| Non-agency Methyl chloride by Colorimetric analysis | Direct-reading | Gastec detector tube | 810-51 810-51L | |
| Non-agency VOCs by solvent desorption and GC-FID Method document (opens in a new tab) | Passive | Passive sampler | 575-001 575-002 | |
| Other | Passive | GC-FID | 575-001 575-002 |
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)