Hazard search
2,4-Toluene diisocyanate
- CAS number
- 584-84-9
- Also known as
- 2, 4-TDI (toluene diisocyanate) (isocyanates, total) · 2,4-TDI · 2,4-TDI (toluene diisocyanate) · 2,4-Toluene diisocyanate (isocyanates) · 2,4-Toluene diisocyanate (isocyanates, total) · Toluene-2,4-diisocyanate
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 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 2535 Toluene-2,4-diisocyanate by HPLC/UV Method document (opens in a new tab) | Active (pump) | Coated glass wool tube | ||
| 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 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/FD 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/FD Method document (opens in a new tab) | Active (pump) | Stainless steel IOM with coated glass fibre filter | 225-79A 225-702 | |
| OSHA 18 Diisocyantes 2,4-TDI and MDI by HPLC . WITHDRAWN. Provided for historail reference only. Method document (opens in a new tab) | Active (pump) | Impinger with fritted nozzle | 225-36-2 225-22 | |
| OSHA 5002 Organic Vapour Sampling Group 3 (OVSG-3) Diisocyanate Analytes by UHPLC-FLR Method document (opens in a new tab) | Active (pump) | Coated Glass fibre filter & support pad in open-face cassette | HPLC-UV or HPLC-FD | 225-9002 225-9013 225-1 |
| ASTM D5836-20 2,4-TDI and 2,6-TDI by HPLC/UV | Active (pump) | Coated glass fibre filter in cassette | HPLC-UV or HPLC-FD | 225-9002 225-9013 225-1 |
| ASTM D5932-20 2,4-TDI and 2,6-TDI in air by HPLC/UV | Active (pump) | Dual filter cassette: PTFE & coated glass fibre filter | HPLC-UV-FD | 225-9022 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)