Hazard search
1,5-Naphthalene diisocyanate
- CAS number
- 3173-72-6
- Also known as
- 1,5-Naphthalene diisocyanate (isocyanates, total) · Naphthylene diisocyanate · Naphthylene diisocyanate (NDI) (isocyanates) · NDI
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 0.02 mg/m³ | |
| 15-minute STEL | 0.07 mg/m³ |
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| MDHS 25/4 Organic Isocyanates in air (aerosols) by HPLC -EC Method document (opens in a new tab) | Active (pump) | Midget impinger & coated glass fibre filter | 225-36-4 225-22 | |
| MDHS 25/4 Organic Isocyanates in air (vapours only) by HPLC -EC Method document (opens in a new tab) | Active (pump) | Stainless Steel IOM with coated glass fibre filter | 225-79A | |
| MDHS 25/4 Organic Isocyanates in air (aerosols per Appendix 2) by HPLC -EC Method document (opens in a new tab) | Active (pump) | Stainless Steel IOM with coated glass fibre filter | 225-79A | |
| 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 5525 Isocyanates, total (MAP) (aerosols of aromatic isocyanates > 2µm) by HPLC/UV 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 Method document (opens in a new tab) | Active (pump) | Impinger with coated glass fibre filter | HPLC-UV | 225-7 225-4 225-27 225-36-1 225-22 225-702 225-76A |
| NIOSH 5525 Isocyanates, total (MAP) (Vapour only) by HPLC/UV Method document (opens in a new tab) | Active (pump) | Stainless steel IOM + coated glass fibre filter | 225-76A 225-702 | |
| OSHA PV2046 1,5-Napthalene diisocyanate by HPLC/UV Method document (opens in a new tab) | Active (pump) | Coated Glass fibre filter in cassette | HPLC-UV-FD | 225-9013 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)