Hazard search
Isocyanates
- CAS number
- No CAS number
- Also known as
- Isocyanates (all) (as -NCO) · Isocyanates (see specific isocyanate) · See individual compounds
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 0.02 mg/m³ | |
| 15-minute STEL | 0.07 mg/m³ |
Notations
- Sen: can cause sensitisation
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| MDHS 25/4 | Active (pump) | HPLC | 225-79A 225-9011 | |
| MDHS 25/4 Organic isocyanates in air by HPLC -UV/EC Method document (opens in a new tab) | Active (pump) | IOM Inhalable Sampler with Stainless Steel Cassette, GF/A 25 mm Filter impregnated with 1,2-MP (vapours) and Impinger (aerosols) in series | 225-76A 225-36-1 | |
| NIOSH 5521 Isocyanates (monomeric) by HPLC -ECD/UV Method document (opens in a new tab) | Active (pump) | Midget impinger | HPLC-ELCHM & HPLC-UV | 225-36-1 225-22 |
| NIOSH 5522 Isocyanates by HPLC -FD/ECD Method document (opens in a new tab) | Active (pump) | Midget impinger | HPLC-FD | 225-36-1 225-22 |
| NIOSH 5525 Isocyanates, total (MAP) (Aerosols of aromatic isocyanates > 2µm)) by HPLC -UV/FD Method document (opens in a new tab) | Active (pump) | Impinger | 225-36-1 225-22 | |
| NIOSH 5525 Isocyanates total (MAP) (Aerosols of aromatic isocyanates) by HPLC -UV/FD Method document (opens in a new tab) | Active (pump) | Impinger with coated glass fibre filter | 225-7 225-4 225-27 225-36-1 225-22 | |
| NIOSH 5525 Isocyanates total (MAP) (Aerosols of aromatic isocyanates) by HPLC -UV Method document (opens in a new tab) | Active (pump) | Impinger with coated glass fibre filter | 225-7 225-4 225-27 225-36-1 225-22 | |
| NIOSH 5525 Isocyanates,total (MAP) (Vapour only) by HPLC -UV/FD Method document (opens in a new tab) | Active (pump) | Stainless steel IOM with coated glass fibre filter | 225-79A 225-702 |
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)