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 31 January 2020 and will close on 28 February 2020.

Chemicals open for comment this release:

Chemical

CAS number

Revision Proposed?

Current TWA

Recommended TWA

ppm

mg/m3

ppm

mg/m3

Ethyl bromide

74-96-4

No – interim

5

22

5

22

Fenthion

55-38-9

No

–

0.2

–

0.2

Fluorides (as F)

16984-48-8

No – interim

–

2.5

–

2.5

Fluorine

7782-41-4

No

1

2 (STEL)

1.6

3.1 (STEL)

1

2 (STEL)

1.6

3.1 (STEL)

Fonofos

944-22-9

No

-

0.1

-

0.1

Glutaraldehyde

111-30-8

Yes

0.1

(Peak limitation)

0.41

(Peak limitation)

0.05

(Peak limitation)

0.2

(Peak limitation)

Glycerin mist

56-81-5

No

–

10

–

10

Hexamethyl phosphoramide

680-31-9

New

–

–

Not recommended

Not recommended

Hexane (n-Hexane)

110-54-3

Yes

20

72

50

176

Hydrazine

302-01-2

Yes

0.01

0.013

0.01 ppb

0.02 µg/m3

Indene

95-13-6

No –interim

10

48

10

48

Indium & compounds (as In)

7440-74-6

Yes –interim

–

0.1

–

Various

Isoamyl alcohol

123-51-3

Yes

100

125 (STEL)

361

452 (STEL)

20

80 (STEL)

73

292 (STEL)

Isopropyl glycidyl ether (IGE)

4016-14-2

Yes - interim

50

75 (STEL)

238

356 (STEL)

50

75 (STEL)

238

356 (STEL)

Isopropylamine

75-31-0

No

5

10 (STEL)

12

24 (STEL)

5

10 (STEL)

12

24 (STEL)

N-Isopropylaniline

768-52-5

Yes – interim

2

11

0.1

0.55

Kaolin

1332-58-7

No – interim

–

10

–

10

LPG (liquefied petroleum gas)

68476-85-7

No – interim

1000

1800

1000

1800

Maleic anhydride

108-31-6

Yes

0.25

1

0.0025

0.01

Manganese, fume, dust & compounds (as Mn)


7439-95-5

Yes

–

1

3 (STEL)

–

0.02 (respirable)

0.1 (inhalable)

4-Methoxyphenol

150-76-5

No

–

5

–

5

Methyl acetate

79-20-9

No

200

250 (STEL)

606

757 (STEL)

200

250 (STEL)

606

757 (STEL)

Methyl acetylene

74-99-7

No

1000

1640

1000

1640

Methyl acetylene-propadiene mixture (MAPP)

59355-75-8

No

1000

1250 (STEL)

1640

2050 (STEL)

1000

1250 (STEL)

1640

2050 (STEL)

Methyl acrylate

96-33-3

Yes

10

35

2

7

Methyl bromide

74-83-9

Yes

5

19

1

3.89

Methyl chloride

74-87-3

Yes

50

100 (STEL)

103

207 (STEL)

20

80 (STEL)

42

167 (STEL)

Methyl formate

107-31-3

Yes

100

150 (STEL)

246

368 (STEL)

50

100 (STEL)

123

245 (STEL)

Methyl hydrazine

60-34-4

No

0.01

0.019

0.01

0.019

Methyl iodide

74-88-4

No

2

12

2

12

Methyl isobutyl carbinol

108-11-2

No

25

40 (STEL)

104

167 (STEL)

25

40 (STEL)

104

167 (STEL)

Methyl isobutyl ketone

108-10-1

Yes

50

75 (STEL)

205

307 (STEL)

20

75 (STEL)

82

307 (STEL)

Methyl isocyanate

624-83-9

Yes

–

0.02

0.07 (STEL)

0.02

0.06 (STEL)

0.047

0.14 (STEL)

Methyl isopropyl ketone

563-80-4

Yes

200

705

20

70

Methyl mercaptan

74-93-1

No

0.5

0.98

0.5

0.98

Methyl methacrylate

80-62-6

No

50

100 (STEL)

208

416 (STEL)

50

100 (STEL)

208

416 (STEL)

Methyl parathion

298-00-0

Yes

0.2

–

0.02

–

Methyl propyl ketone

107-87-9

Yes

200

250 (STEL)

705

881 (STEL)

150 (STEL)

529 (STEL)

Methylacrylonitrile

126-98-7

No

1

2.7

1

2.7

Methylcyclopentadienyl manganese tricarbonyl
(as Mn)

12108-13-3

No

–

0.2

–

0.2

Methylene chloride

75-09-2

No

50

174

50

174

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.

Draft evaluation reports and recommendations