WES review - Release 14 (Isocyanates and others)

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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.

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.

  • Please provide your technical comments on the recommended values for the following chemicals.

    You will be asked two questions and have the option to upload up to two documents with additional information.

    Note: You can only comment on one chemical at a time. After submitting your comment, you can then select another chemical from the drop down list and follow the same process.

    Please provide your technical comments on the recommended values for the following chemicals.

    You will be asked two questions and have the option to upload up to two documents with additional information.

    Note: You can only comment on one chemical at a time. After submitting your comment, you can then select another chemical from the drop down list and follow the same process.

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