Overview
Safe Work Australia is evaluating the Workplace exposure standards for airborne contaminants to ensure they are based on the highest quality, contemporary evidence and supported by a rigorous scientific approach.
We would like your feedback on the draft evaluation reports and recommendations. In particular comments of a technical nature are sought about:
the toxicological information and data that the recommended workplace exposure standard is based upon, and
the measurement and analysis information provided.
For more information on other chemicals and their release dates, please see the release schedule.
Comments are open from Friday 13 March 2020 and will close on 10 April 2020.
Chemicals open for comment this release:
Chemical | CAS number | Revision Proposed? | Current TWA | Recommended TWA | ||
ppm | mg/m3 | ppm | mg/m3 | |||
Isocyanates, (pol-) (as-NCO) | 584-84-9 91-08-7 822-06-0 4098-71-9 101-68-8 5124-30-1 | Yes | – | 0.02 0.07 (STEL) | – | 0.0001 |
Methacrylic acid | 79-41-4 | No | 20 | 70 | 20 | 70 |
Methoxychlor | 72-43-5 | No – interim | – | 10 | – | 10 |
2-Methoxyethanol | 109-86-4 | Yes | 5 | 16 | 0.1 | 0.3 |
2-methoxyethyl acetate | 110-49-6 | Yes | 5 | 24 | 0.1 | 0.5 |
(2-Methoxymethylethoxy) propanol | 34590-94-8 | No | 50 | 308 | 50 | 308 |
Methylamine | 74-89-5 | Yes – interim | 10 | 13 | 10 15 (STEL) | 13 19 (STEL) |
Methylcyclohexane | 108-87-2 | Yes | 400 | 1610 | 200 | 810 |
Methylcyclohexanol | 25639-42-3 | No | 50 | 234 | 50 | 234 |
1-methyl-2-pyrrolidone | 872-50-4 | Yes | 25 75 (STEL) | 103 309 (STEL) | 20 | 80 |
Methyl silicate | 681-84-5 | No | 1 | 6 | 1 | 6 |
Nickel carbonyl | 13463-39-3 | Yes | 0.05 | 0.12 | 0.05 (peak limitation) | 0.12 (peak limitation) |
Nickel, metal and insoluble compounds | 7440-02-0 | Yes | – | 1 | – | 0.1 |
Nickel, soluble compounds | 7718-54-9 13138-45-9 | No | – | 0.1 | – | 0.1 |
Nitric acid | 7697-37-2 | Yes | 2 4 (STEL) | 5.2 10 (STEL) | 2 | 5.2 |
Nitric oxide | 10102-43-9 | Yes | 25 | 31 | 2 | 2.5 |
Nitrogen trifluoride | 7783-54-2 | Yes - removal | 10 | 29 | Not recommended | Not recommended |
Nitroglycerine | 55-63-0 | Yes | 0.05 | 0.46 | 0.01 0.02 (STEL) | 0.1 0.19 (STEL) |
Nitromethane | 75-52-5 | No | 20 | 50 | 20 | 50 |
1-Nitropropane | 108-03-2 | No – interim | 25 | 91 | 25 | 91 |
2-Nitropropane | 79-46-9 | No | 10 | 36 | 10 | 36 |
N-nitrosodimethylamine | 62-75-9 | New – interim | – | – | – | – |
Pentaborane | 19624-22-7 | Yes | 0.005 0.015 (STEL) | 0.013 0.039 (STEL) | 0.005 | 0.013 |
Pentachloronaphthalene | 1321-64-8 | Yes – removal | – | 0.5 | Not recommended | Not recommended |
2,4-pentanedione | 123-54-6 | New | – | – | 25 | 102 |
Perchloromethyl mercaptan | 594-42-3 | Yes – removal | 0.1 | 0.76 | Not recommended | Not recommended |
Perlite dust | 93763-70-3 | No | – | 10 | – | 10 |
Persulfates, ammonium- and alkali metal salts | 7727-54-0 7727-21-1 7775-27-1 | No | – | 0.1 | – | 0.1 |
Petrol (Gasoline) | – | Yes | – | 900 | 300 500 (peak limitation) | 900 1480 (peak limitation) |
Phenyl glycidyl ether | 122-60-1 | No | 1 | 6.1 | 1 | 6.1 |
Phosphine | 7803-51-2 | Yes | 0.3 1 (STEL) | 0.42 1.4 (STEL) | 0.05 0.15 (peak limitation) | 0.07 0.21 (peak limitation) |
Phosphorus pentachloride | 10026-13-8 | No | 0.1 | 0.85 | 0.1 | 0.85 |
Phosphorus trichloride | 7719-12-2 | No | 0.2 0.5 (STEL) | 1.1 2.8 (STEL) | 0.2 0.5 (STEL) | 1.1 2.8 (STEL) |
m-Phthalodinitrile | 626-17-5 | No | – | 5 | – | 5 |
beta-Propiolactone | 57-57-8 | No | 0.5 | 1.5 | 0.5 | 1.5 |
Propranolol | 525-66-6 | Yes – interim | 0.188 0.565 (STEL) | 2 6 (STEL) | – | – |
Propylene oxide | 75-56-9 | Yes | 20 | 48 | 2 | 4.8 |
Note: | Chemicals scheduled for release not listed above have been deferred to future releases. | |||||
For any assistance in providing your comments please contact us at WESconsult@swa.gov.au.