WES review - Release 12 (Formic acid and others)

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Release 12 closed on Friday 13 March 2020. 

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 14 February 2020 and will close on 13 March 2020.

Chemicals open for comment this release:

Chemical

CAS number

Revision Proposed?
Current TWA
Recommended TWA
ppm
mg/m3
ppm
mg/m3
2,6-Di-tert-butyl-p-cresol

128-37-0

No – interim

10

10

Ethylenimine

151-56-4

Yes – interim

0.5

0.88

5 ppb

Formic acid

64-18-6

No

5

10 (STEL)

9.4

19 (STEL)

5

10 (STEL)

9.4

19 (STEL)

Glyoxal

107-22-2

New

0.042

0.1

Grain dust
(oats, wheat, barely)

Nil

Yes

4

1.5

Graphite
(All forms except fibres)
(Respirable dust)
(Natural and synthetic)

7782-42-5

No

3

3

Hexachlorobenzene

118-74-1

New

0.002

Iron salts, soluble (as Fe)

Nil

No – interim

1

1

Alkyl mercury compounds

7439-97-6

No – interim

0.01

0.01

Mercury and compounds

7439-97-6

No – interim

Various

Various

Mesityl oxide

141-79-7

Yes

15

25 (STEL)

60

100

2

8.1

Methomyl

16752-77-5

Yes

2.5

0.2

1-Methoxy-2-propanol acetate

108-65-6

No

50

100 (STEL)

274

548 (STEL)

50

100 (STEL)

274

548 (STEL)

Methyl alcohol

67-56-1

Yes

200

250 (STEL)

262

328 (STEL)

100

130

2-Methylbutyl acetate

624-41-9

New

50

100 (STEL)

266

532 (STEL)

Methyl demeton

8022-00-2

No – interim

0.5

0.5

4,4’-methylene bis(2-chloroaniline)

101-14-4

No – interim

0.02

0.22

0.02

0.22

4,4-Methylenedianiline

101-77-9

No

0.1

0.81

0.1

0.81

Methyl ethyl ketone peroxide

1338-23-4

No – interim

0.2

(peak limitation)

1.5

(peak limitation)

0.2

(peak limitation)

1.5

(peak limitation)

Methyl isoamyl ketone

110-12-3

Yes

50

234

20

40 (STEL)

93

186 (STEL)

Methylal

109-87-5

No

1000

3110

1000

3110

Methyl n-amyl ketone

110-43-0

No

50

233

50

233

Methyl tert-butyl ether

1634-04-4

Yes

25

75 (STEL)

92

275 (STEL)

50

180

Methyl vinyl ketone

78-94-4

New – interim

0.2

(peak limitation)

0.6

(peak limitation)

Metribuzin

21087-64-9

No

5

5

Mevinphos

7786-34-7

Yes

0.01

(0.03) STEL)

0.092

0.27 (STEL)

0.01

Mica

12001-26-2

No

2.5

2.5

Molybdenum
(insoluble compounds)

7439-98-7

Yes

10

Various

Various

Molybdenum
(soluble compounds)

7439-98-7

Yes

5

0.5

Morpholine

110-91-8

No

20

71

20

71

Naphthalene

91-20-3

Yes

10

15 (STEL)

52

79 (STEL)

10

52

Natural rubber latex

900-04-6

New – interim

0.1 µg/m3

Nitrous oxide

10024-97-2

Yes

25

45

50

90

N-methylaniline

100-61-8

No – interim

0.5

2.2

0.5

2.2

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 14 February 2020 and will close on 13 March 2020.

Chemicals open for comment this release:

Chemical

CAS number

Revision Proposed?
Current TWA
Recommended TWA
ppm
mg/m3
ppm
mg/m3
2,6-Di-tert-butyl-p-cresol

128-37-0

No – interim

10

10

Ethylenimine

151-56-4

Yes – interim

0.5

0.88

5 ppb

Formic acid

64-18-6

No

5

10 (STEL)

9.4

19 (STEL)

5

10 (STEL)

9.4

19 (STEL)

Glyoxal

107-22-2

New

0.042

0.1

Grain dust
(oats, wheat, barely)

Nil

Yes

4

1.5

Graphite
(All forms except fibres)
(Respirable dust)
(Natural and synthetic)

7782-42-5

No

3

3

Hexachlorobenzene

118-74-1

New

0.002

Iron salts, soluble (as Fe)

Nil

No – interim

1

1

Alkyl mercury compounds

7439-97-6

No – interim

0.01

0.01

Mercury and compounds

7439-97-6

No – interim

Various

Various

Mesityl oxide

141-79-7

Yes

15

25 (STEL)

60

100

2

8.1

Methomyl

16752-77-5

Yes

2.5

0.2

1-Methoxy-2-propanol acetate

108-65-6

No

50

100 (STEL)

274

548 (STEL)

50

100 (STEL)

274

548 (STEL)

Methyl alcohol

67-56-1

Yes

200

250 (STEL)

262

328 (STEL)

100

130

2-Methylbutyl acetate

624-41-9

New

50

100 (STEL)

266

532 (STEL)

Methyl demeton

8022-00-2

No – interim

0.5

0.5

4,4’-methylene bis(2-chloroaniline)

101-14-4

No – interim

0.02

0.22

0.02

0.22

4,4-Methylenedianiline

101-77-9

No

0.1

0.81

0.1

0.81

Methyl ethyl ketone peroxide

1338-23-4

No – interim

0.2

(peak limitation)

1.5

(peak limitation)

0.2

(peak limitation)

1.5

(peak limitation)

Methyl isoamyl ketone

110-12-3

Yes

50

234

20

40 (STEL)

93

186 (STEL)

Methylal

109-87-5

No

1000

3110

1000

3110

Methyl n-amyl ketone

110-43-0

No

50

233

50

233

Methyl tert-butyl ether

1634-04-4

Yes

25

75 (STEL)

92

275 (STEL)

50

180

Methyl vinyl ketone

78-94-4

New – interim

0.2

(peak limitation)

0.6

(peak limitation)

Metribuzin

21087-64-9

No

5

5

Mevinphos

7786-34-7

Yes

0.01

(0.03) STEL)

0.092

0.27 (STEL)

0.01

Mica

12001-26-2

No

2.5

2.5

Molybdenum
(insoluble compounds)

7439-98-7

Yes

10

Various

Various

Molybdenum
(soluble compounds)

7439-98-7

Yes

5

0.5

Morpholine

110-91-8

No

20

71

20

71

Naphthalene

91-20-3

Yes

10

15 (STEL)

52

79 (STEL)

10

52

Natural rubber latex

900-04-6

New – interim

0.1 µg/m3

Nitrous oxide

10024-97-2

Yes

25

45

50

90

N-methylaniline

100-61-8

No – interim

0.5

2.2

0.5

2.2

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.

    Release 12 closed on Friday 13 March 2020. 
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