WES review - Release 15 (Paraffin wax and others)

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 Monday 1 February 2021 and will close on 30 July 2021.

Chemicals open for comment this release:

Chemical

CAS number

Revision Proposed?
Current TWA
Recommended TWA
ppm
mg/m3
ppm
mg/m3

Ethylene glycol (vapour & particulate)

107-21-1

Yes

20 - vapour

40 (STEL) -vapour

52 – vapour

10 - particulate

104 (STEL) -vapour

20 (vapour)

40 (STEL - vapour)

52 – vapour

104 (STEL – vapour)

10 (STEL – particulate)


Methyl ethyl ketone (MEK)

78-93-3

Yes

150

300 (STEL)

445

890 (STEL)

200

300 (STEL)

590

885 (STEL)

alpha-Methyl styrene

98-83-9

No

50

100 (STEL)

242

483 (STEL)

50

100 (STEL)

242

483 (STEL)

Mineral spirits

64742-48-9
8052-41-3
64742-95-6

Yes

Various

Various

50

100 (STEL

295

593 (STEL)

Monocrotophos

6923-22-4

Yes

-

0.25

-

0.05

Nicotine


54-11-5

No - interim

-

0.5

-

0.5

Nitrapyrin

1929-82-4

Yes - removal

-

10

20 (STEL)

Not recommended

Not recommended

p-Nitroaniline

100-01-6

No

-

3

-

3

Nitroethane

79-24-3

No

100

307

100

307

2-Nitrotoluene

88-72-2

Yes

2

11

0.45 ppb

2.54 µg/m3

2,2'-Oxybis[ethanol]

111-46-6

No

23

100

23

100

Oxygen difluoride

7783-41-7

Yes - removal

0.05

(peak limitation)

0.11

(peak limitation)

Not recommended

Not recommended

Ozone


10028-15-6

No

0.1

(peak limitation)

0.2

(peak limitation)

0.1

(peak limitation)

0.2

(peak limitation)

Paraffin wax (fume)

8002-74-2

No

-

2

-

2

Parathion


56-38-2

No - interim

-

0.1

-

0.1

PCBs (42% Chlorine)


53469-21-9

Yes - removal

-

1

2 (STEL)

Not recommended

Not recommended

PCBs (54% Chlorine)


11097-69-1

Yes - removal

-

0.5

1 (STEL)

Not recommended

Not recommended

Pentachloronitrobenzene

82-68-8

No

-

0.5

-

0.5

Pentachlorophenol


87-86-5

No - interim

-

0.5

-

0.5

Perfluoroisobutylene


382-21-8

No - interim

0.01

(peak limitation)

0.082

(peak limitation)

0.01

(peak limitation)

0.082

(peak limitation)

Perfluorooctanoic acid (PFOA) and its inorganic salts

335-67-1

335-95-5

2395-00-8

New - interim

-

-

Not recommended

Not recommended

Phenothiazine

92-84-2

No

-

5

-

5

Phenyl ether (vapour)


101-84-8

No

1

2 (STEL)

7

14 (STEL)

1

2 (STEL)

7

14 (STEL)

Phenylphosphine


638-21-1

Yes - removal

0.05

(peak limitation)

0.23

(peak limitation)

Not recommended

Not recommended

N-Phenyl-2-naphthylamine

135-88-6

New – interim

-

-

Not recommended

Not recommended

o-Phenylenediamine

95-54-5

No

-

0.1

-

0.1

Phorate


298-02-2

Yes

-

0.05

0.2 (STEL)

5 ppb

0.05

Phosgene

75-44-5

Yes

0.02

0.06 (STEL)

0.08

0.25 (STEL)

0.1

0.4 (STEL)

0.41

1.6 (STEL)

Phosphorus pentasulphide


1314-80-3

No

-

1

3 (STEL)

-

1

3 (STEL)

Picloram

1918-02-1

No

-

10

-

10

Pindone

83-26-1

No

-

0.1

-

0.1

Piperazine and salts

110-85-0
142-64-3

Yes

-

5

0.03

0.09 (STEL)

0.1

0.3 (STEL)

Piperidine

110-89-4

No

1

3.5

1

3.5

Platinum, metal and soluble salts


7440-06-4


No

-

0.1 (metal)

0.002 (soluble salts as Pt)

-

0.1 (metal)

0.002 (soluble salts as Pt)

Polycyclic aromatic hydrocarbon (PAH) mixture when containing benzo[a]pyrene

50-32-8
218-01-9

New

-

-

-

0.13 µg/m3

(as benzo[a]pyrene)

Propoane-1,2-Diol (Total, vapour and particules)

57-55-6

Yes

Various

Various

-

50

Propargyl alcohol

107-19-7

No

1

2.3

1

2.3

Propionic acid

79-09-4

No

10

30

10

30

Propyl acetate (all isomers)


108-21-4
109-60-4

Yes

200

250 (STEL)

835

1040 (STEL)

100

150 (STEL)

417

626 (STEL)

Propyl alcohol


71-23-8

No

200

250 (STEL)

492

614 (STEL)

200

250 (STEL)

492

614 (STEL)

Propylene dichloride


78-87-5

Yes - interim

75

110 (STEL)

347

508 (STEL)

10

46

Propylene glycol dinitrate

6423-43-4

Yes

0.05

0.34

0.01

0.069

Propylene glycol monomethyl ether

107-98-2

No

100

150 (STEL)

369

535 (STEL)

100

150 (STEL)

369

535 (STEL)

Propylene imine

75-55-8

Yes

2

4.7

0.2

0.5

Pyrethrum

8003-34-7

Yes

-

5

-

1

Pyridine

110-86-1

Yes

5

16

1

3.1

Quinone

106-51-4

No

0.1

0.44

0.1

0.44

Resorcinol


108-46-3


Yes

10

20 (STEL)

45

90 (STEL)

10

45

Rhodium, metal and compounds (as Rh)


7440-16-6


No

-

Various

-

Various

Ronnel

299-84-3

Yes

-

10

-

5

Rosin core solder pyrolysis products (as formaldehyde)

8050-09-7

No

-

0.1

-

0.1

Rotenone (commercial)


83-79-4

No – interim

-

5

-

5

Selenium compounds (as Se) excluding hydrogen selenide

7782-49-2

No

-

0.1

-

0.1

Selenium hexafluoride (as Se)

7783-79-1

Yes - removal

0.05

0.16

Not recommended

Not recommended

Sesone


136-78-7

Yes – removal

-

10

Not recommended

Not recommended

Silica – Amorphous






61790-53-2
7631-86-9
112926-00-8
112926-00-8

No

Various

Various

Various

Various

Silicon


7440-21-3

No – interim

-

10

-

10

Silicon carbide (fibres)


409-21-2

Yes - interim

-

10

-

0.1 fibres/mL

(respirable)

Silicon carbide (non-fibrous dust)

409-21-2

Yes

-

10

-

3 (respirable)

10 (inhalable)

Silicon tetrahydride

7803-62-5

No

5

6.6

5

6.6

Silver and its salts


7440-22-4

No

-

0.1

-

0.1 (silver, metal)

0.01 (silver salts)

Soapstone

(No CAS)

No – interim

-

6

3 (respirable)

-

6 (total dusts)

3 (respirable)

Sodium azide

26628-22-8

Yes - interim

0.11 (peak limitation)

0.3 (peak limitation)

0.04

0.11 (peak limitation)

0.1

0.3 (peak limitation)

Sodium bisulphite

7631-90-5

No

-

5

-

5

Sodium fluoroacetate

62-74-8

Yes

-

0.05

0.15 (STEL)

-

0.05

Sodium hydroxide

1310-73-2

No

-

2

(peak limitation)

-

2

(peak limitation)

Sodium metabisulphite

7681-57-4

No

-

5

-

5

Starch

9005-25-8

No

-

10

-

10

Stearates

(No CAS)

Yes

-

10

-

10 (inhalable)

3 (respirable)

Stibine

7803-52-3

Yes - removal

0.1

0.51

Not recommended

Not recommended

Strychnine

57-24-9

No

-

0.15

-

0.15

Styrene, monomer


100-42-5

Yes

50

100 (STEL)

213

426 (STEL)

20

40 (STEL)

85

170 (STEL)

Subtilisins (Proteolytic enzymes as 100% pure crystalline enzyme)

1395-21-7

9014-01-1

No

-

0.06 µg/m3

(peak limitation)

-

0.06 µg/m3

(peak limitation)

Sucrose

57-50-1

No

-

10

-

10

Sulfotep

3689-24-5

Yes - removal

0.007

0.1

Not recommended

Not recommended

Sulphur dioxide

7446-09-5

Yes

2

5 (STEL)

5.2

13 (STEL)

0.25 (STEL)

0.65 (STEL)

Sulphur hexafluoride

2551-62-4

No

1000

5970

1000

5970

Sulphur monochloride

10025-67-9

No – interim

1

(peak limitation)

5.5

(peak limitation)

1

(peak limitation)

5.5

(peak limitation)

Sulphur pentafluoride

5714-22-7

Yes – removal

0.01

(peak limitation)

0.1

(peak limitation)

Not recommended

Not recommended

Sulphur tetrafluoride

7783-60-0

No – interim

0.1

(peak limitation)

0.44

(peak limitation)

0.1

(peak limitation)

0.44

(peak limitation)

Sulphuric acid

7664-93-9

Yes

-

1

3 (STEL)

-

0.1

Sulfuryl fluoride (Sulphurly)

2699-79-8

Yes – removal

5

10 (STEL)

21

42 (STEL)

Not recommended

Not recommended

Sulprofos

35400-43-2

Yes

-

1

0.008

0.1

Synthetic mineral fibres (SMF) or Man-made vitreous fibres (MMVF)

(No CAS)



No

0.5 f/mL (respirable)

2 (inhalable)


0.5 f/mL (respirable)


2 (inhalable)

2,4,5-T

93-76-5

No

-

10

-

10

Talc, (containing no asbestos fibres)

14807-96-6

Yes

-

2.5 (respirable)

-

2 (respirable)

Tantalum, metal & oxide dusts

7440-25-7

No

-

5

-

5

Tellurium & compounds (as Te)

13494-80-9

No

-

0.1

-

0.1

Tellurium hexafluoride (as Te)

7783-80-4

No

0.02

0.1

0.02

0.1

Temephos

3383-96-8

Yes

-

10

0.1

2

TEPP

107-49-3

Yes – removal

0.004

0.047

Not recommended

Not recommended

Terephthalic Acid

100-21-0

New

-

-

-

5

Terphenyls

26140-60-3

No

0.5

(peak limitation)

4.7

(peak limitation)

0.5

(peak limitation)

4.7

(peak limitation)

1,1,2,2-Tetrabromoethane

79-27-6

No

1

14

1

14

1,1,2,2-Tetrachloro-1,2-difluoroethane

76-12-0

No

500

4170

500

4170

1,1,1,2-Tetrachloro-2,2-difluoroethane

76-11-9

No – interim

500

4170

500

4170

1,1,2,2-Tetrachloroethane

79-34-5

No

1

7

1

7

Tetrachloronaphthalene

1335-88-2

Yes – removal

-

2

Not recommended

Not recommended

Tetraethyl lead (as Pb)

78-00-2

No

-

0.1

-

0.1

1,1,1,2-Tetrafluoroethane

811-97-2

No

1000

4240

1000

4240

Tetrafluoroethylene

116-14-3

New

-

-

2

8.2

Tetrahydrofuran

109-99-9

Yes

100

295

50

147

Tetramethyl lead (as Pb)

75-74-1

No

-

0.15

-

0.15

Tetramethyl succinonitrile

3333-52-6

No

0.5

2.8

0.5

2.8

Tetranitromethane

509-14-8

Yes – removal

1

8

Not recommended

Not recommended

Tetrasodium pyrophosphate

7722-88-5

No

-

5

-

5

Tetryl

479-45-8

No – interim

-

1.5

-

1.5

Thallium, soluble compounds (as Tl)

7440-28-0

Yes

-

0.1

-

0.02

4,4'-Thiobis (6-tert-butyl-m-cresol)

96-69-5

No -interim

-

10

-

10

Thioglycolic acid

68-11-1

No

1

3.8

1

3.8

Thionyl chloride

7719-09-7

Yes

1

(peak limitation)

4.9

(peak limitation)

0.2

(peak limitation)

1

(peak limitation)

Thiram

137-26-8

No

-

1

-

1

Tin, organic compounds (as Sn)

(No CAS)

Yes

-

0.1

0.2 (STEL)

-

0.1

Tin (metal and inorganic compounds)

7440-31-5

No

-

2

-

2

Titanium dioxide

13463-67-7

Yes

-

10

-

1 (inhalable)

o-Tolidine

119-93-7

New – interim

-

-

Not recommended

Not recommended

Toluene

108-88-3

Yes

50

150 (STEL)

191

574 (STEL)

20

75

m-Toluidine

108-44-1

No - interim

2

8.8

2

8.8

o-Toluidine

95-53-4

No – interim

2

8.8

2

8.8

p-Toluidine

106-49-0

No – interim

2

8.8

2

8.8

Tributyl phosphate

126-73-8

No

0.2

2.2

0.2

2.2

1,1,2-Trichloro-1,2,2-trifluoroethane

76-13-1

No

1000

1250 (STEL)

7670

9590 (STEL)

1000

1250 (STEL)

7670

9590 (STEL)

Trichloroacetic acid

76-03-9

No

1

6.7

1

6.7

1,2,4-Trichlorobenzene

120-82-1

No

5

(peak limitation)

37

(peak limitation)

5

(peak limitation)

37

(peak limitation)

1,1,1-Trichloroethane

71-55-6

No

100

200 (STEL)

555

1110 (STEL)

100

200 (STEL)

555

1110 (STEL)

1,1,2-Trichloroethane

79-00-5

No

10

55

10

55

Trichloroethylene

79-01-6

No

10

40 (STEL)

54

216 (STEL)

10

40 (STEL)

54

216 (STEL)

Trichlorofluoromethane

75-69-4

No

1000

(peak limitation)

5620

(peak limitation)

1000

(peak limitation)

5620

(peak limitation)

Trichloronaphthalene

1321-65-9

Yes – removal

-

5

-

Not recommended

1,2,3-Trichloropropane

96-18-4

No - interim

10

60

10

60

Triethanolamine

102-71-6

No

-

5

-

5

Triethylamine

121-44-8

Yes

2

4 (STEL)

8

17 (STEL)

1

2 (STEL)

4.2

8.4 (STEL)

Trifluorobromomethane

75-63-8

No

1000

6090

1000

6090

Triglycidylisocyanurate (TGIC)

2451-62-9

Yes – interim

-

0.08

-

0.05

Trimellitic anhydride

552-30-7

Yes

0.005

0.039

0.06 ppb

0.02 ppb (peak limitation)

0.5 µg/m3

2 µg/m3 (peak limitation)

Trimethylamine

75-50-3

No

10

15 (STEL)

24

36 (STEL)

10

15 (STEL)

24

36 (STEL)

2,4,5-Trimethylaniline

137-17-7

New

-

-

Not recommended

Not recommended

Trimethylbenzene (all isomers)

25551-13-7
526-73-8
95-63-6
108-67-8

New

-

-

20

100

Trimethyl phosphite

121-45-9

No

2

10

2

10

2,4,6-Trinitrotoluene (TNT)

118-96-7

Yes

-

0.5

-

0.1

Triorthocresyl phosphate


78-30-8

No – interim

-

0.1

-

0.1

Triphenyl amine

603-34-9

No – interim

-

5

-

5

Triphenyl phosphate

115-86-6

No

-

3

-

3

Tungsten, soluble and insoluble compounds (as W)

7440-33-7

Yes

-

5 (insoluble)

10 (STEL – insoluble)

1 (soluble)

3 (STEL – soluble)

-

3 (respirable)

Turpentine (wood)

8006-64-2

Yes – interim

100

557

20

112

Uranium (natural), soluble & insoluble compounds (as H)

7440-61-1

Yes

-

0.2

0.6 (STEL)

-

0.2

Urethane

51-79-6

New

-

-

Not recommended

Not recommended

n-Valeraldehyde

110-62-3

No

50

176

50

176

Vanadium (as V2O5), (respirable dust & fume)

1314-62-1

No

-

0.05

-

0.05 (inhalable)

Vegetable oil mists (except castor oil, cashew nut or similar irritant oils)

(No CAS)

Yes - removal

-

10

-

Not recommended

Vinyl acetate

108-05-4

Yes

10

20 (STEL)

35

70 (STEL)

10

15 (STEL)

35

53 (STEL)

Vinyl bromide

593-60-2

Yes – interim

5

22

0.5

2.2

Vinyl chloride, monomer

75-01-4

Yes

5

13

7 ppb

18.2 µg/m3

4-Vinyl Cyclohexene

100-40-3

New

-

-

Not recommended

Not recommended

Vinyl cyclohexene dioxide

106-87-6

No

10

57

10

57

N-Vinyl-2-pyrrolidone

88-12-0

New

-

-

0.01

0.046

Vinyl toluene

25013-15-4

Yes

50

100 (STEL)

242

483 (STEL)

20

40 (STEL)

97

193 (STEL)

Vinylidene chloride

75-35-4

No

5

20 (STEL)

20

79 (STEL)

5

20 (STEL)

20

79 (STEL)

Vinylidene Fluoride

75-38-7

New

-

-

Not recommended

Not recommended

Warfarin

81-81-2

Yes

-

0.1

-

0.01

Welding fumes (not otherwise classified)

(No CAS)

Yes

-

5

-

Not recommended

Wood dust

(No CAS)

Yes

-

Various

-

0.5

Xylene (o-, m-, p- isomers)




1330-20-7

95-47-6

108-38-3

106-42-3

No

80

150 (STEL)

350

655 (STEL)

80

150 (STEL)

350

655 (STEL)

m-Xylene-alpha,alpha'-diamine

1477-55-0

No

-

0.1

(peak limitation)

-

0.1

(peak limitation)

Xylidine (all isomers)

1300-73-8

87-62-7

No

0.5

2.5

0.5

2.5

Yttrium, metal & compounds (as Y)

7440-65-5

No – interim

-

1

-

1

Zinc chloride (fume)

7646-85-7

Yes

1

2

-

2 (STEL)

Zinc oxide (fume & dust)

1314-13-2

Yes

-

Various

10 (STEL)

-

2 (fume and dust)

10 STEL

Zirconium compounds (as Zr)


Yes - interim

-

5

10 (STEL)

-

5

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 Monday 1 February 2021 and will close on 30 July 2021.

Chemicals open for comment this release:

Chemical

CAS number

Revision Proposed?
Current TWA
Recommended TWA
ppm
mg/m3
ppm
mg/m3

Ethylene glycol (vapour & particulate)

107-21-1

Yes

20 - vapour

40 (STEL) -vapour

52 – vapour

10 - particulate

104 (STEL) -vapour

20 (vapour)

40 (STEL - vapour)

52 – vapour

104 (STEL – vapour)

10 (STEL – particulate)


Methyl ethyl ketone (MEK)

78-93-3

Yes

150

300 (STEL)

445

890 (STEL)

200

300 (STEL)

590

885 (STEL)

alpha-Methyl styrene

98-83-9

No

50

100 (STEL)

242

483 (STEL)

50

100 (STEL)

242

483 (STEL)

Mineral spirits

64742-48-9
8052-41-3
64742-95-6

Yes

Various

Various

50

100 (STEL

295

593 (STEL)

Monocrotophos

6923-22-4

Yes

-

0.25

-

0.05

Nicotine


54-11-5

No - interim

-

0.5

-

0.5

Nitrapyrin

1929-82-4

Yes - removal

-

10

20 (STEL)

Not recommended

Not recommended

p-Nitroaniline

100-01-6

No

-

3

-

3

Nitroethane

79-24-3

No

100

307

100

307

2-Nitrotoluene

88-72-2

Yes

2

11

0.45 ppb

2.54 µg/m3

2,2'-Oxybis[ethanol]

111-46-6

No

23

100

23

100

Oxygen difluoride

7783-41-7

Yes - removal

0.05

(peak limitation)

0.11

(peak limitation)

Not recommended

Not recommended

Ozone


10028-15-6

No

0.1

(peak limitation)

0.2

(peak limitation)

0.1

(peak limitation)

0.2

(peak limitation)

Paraffin wax (fume)

8002-74-2

No

-

2

-

2

Parathion


56-38-2

No - interim

-

0.1

-

0.1

PCBs (42% Chlorine)


53469-21-9

Yes - removal

-

1

2 (STEL)

Not recommended

Not recommended

PCBs (54% Chlorine)


11097-69-1

Yes - removal

-

0.5

1 (STEL)

Not recommended

Not recommended

Pentachloronitrobenzene

82-68-8

No

-

0.5

-

0.5

Pentachlorophenol


87-86-5

No - interim

-

0.5

-

0.5

Perfluoroisobutylene


382-21-8

No - interim

0.01

(peak limitation)

0.082

(peak limitation)

0.01

(peak limitation)

0.082

(peak limitation)

Perfluorooctanoic acid (PFOA) and its inorganic salts

335-67-1

335-95-5

2395-00-8

New - interim

-

-

Not recommended

Not recommended

Phenothiazine

92-84-2

No

-

5

-

5

Phenyl ether (vapour)


101-84-8

No

1

2 (STEL)

7

14 (STEL)

1

2 (STEL)

7

14 (STEL)

Phenylphosphine


638-21-1

Yes - removal

0.05

(peak limitation)

0.23

(peak limitation)

Not recommended

Not recommended

N-Phenyl-2-naphthylamine

135-88-6

New – interim

-

-

Not recommended

Not recommended

o-Phenylenediamine

95-54-5

No

-

0.1

-

0.1

Phorate


298-02-2

Yes

-

0.05

0.2 (STEL)

5 ppb

0.05

Phosgene

75-44-5

Yes

0.02

0.06 (STEL)

0.08

0.25 (STEL)

0.1

0.4 (STEL)

0.41

1.6 (STEL)

Phosphorus pentasulphide


1314-80-3

No

-

1

3 (STEL)

-

1

3 (STEL)

Picloram

1918-02-1

No

-

10

-

10

Pindone

83-26-1

No

-

0.1

-

0.1

Piperazine and salts

110-85-0
142-64-3

Yes

-

5

0.03

0.09 (STEL)

0.1

0.3 (STEL)

Piperidine

110-89-4

No

1

3.5

1

3.5

Platinum, metal and soluble salts


7440-06-4


No

-

0.1 (metal)

0.002 (soluble salts as Pt)

-

0.1 (metal)

0.002 (soluble salts as Pt)

Polycyclic aromatic hydrocarbon (PAH) mixture when containing benzo[a]pyrene

50-32-8
218-01-9

New

-

-

-

0.13 µg/m3

(as benzo[a]pyrene)

Propoane-1,2-Diol (Total, vapour and particules)

57-55-6

Yes

Various

Various

-

50

Propargyl alcohol

107-19-7

No

1

2.3

1

2.3

Propionic acid

79-09-4

No

10

30

10

30

Propyl acetate (all isomers)


108-21-4
109-60-4

Yes

200

250 (STEL)

835

1040 (STEL)

100

150 (STEL)

417

626 (STEL)

Propyl alcohol


71-23-8

No

200

250 (STEL)

492

614 (STEL)

200

250 (STEL)

492

614 (STEL)

Propylene dichloride


78-87-5

Yes - interim

75

110 (STEL)

347

508 (STEL)

10

46

Propylene glycol dinitrate

6423-43-4

Yes

0.05

0.34

0.01

0.069

Propylene glycol monomethyl ether

107-98-2

No

100

150 (STEL)

369

535 (STEL)

100

150 (STEL)

369

535 (STEL)

Propylene imine

75-55-8

Yes

2

4.7

0.2

0.5

Pyrethrum

8003-34-7

Yes

-

5

-

1

Pyridine

110-86-1

Yes

5

16

1

3.1

Quinone

106-51-4

No

0.1

0.44

0.1

0.44

Resorcinol


108-46-3


Yes

10

20 (STEL)

45

90 (STEL)

10

45

Rhodium, metal and compounds (as Rh)


7440-16-6


No

-

Various

-

Various

Ronnel

299-84-3

Yes

-

10

-

5

Rosin core solder pyrolysis products (as formaldehyde)

8050-09-7

No

-

0.1

-

0.1

Rotenone (commercial)


83-79-4

No – interim

-

5

-

5

Selenium compounds (as Se) excluding hydrogen selenide

7782-49-2

No

-

0.1

-

0.1

Selenium hexafluoride (as Se)

7783-79-1

Yes - removal

0.05

0.16

Not recommended

Not recommended

Sesone


136-78-7

Yes – removal

-

10

Not recommended

Not recommended

Silica – Amorphous






61790-53-2
7631-86-9
112926-00-8
112926-00-8

No

Various

Various

Various

Various

Silicon


7440-21-3

No – interim

-

10

-

10

Silicon carbide (fibres)


409-21-2

Yes - interim

-

10

-

0.1 fibres/mL

(respirable)

Silicon carbide (non-fibrous dust)

409-21-2

Yes

-

10

-

3 (respirable)

10 (inhalable)

Silicon tetrahydride

7803-62-5

No

5

6.6

5

6.6

Silver and its salts


7440-22-4

No

-

0.1

-

0.1 (silver, metal)

0.01 (silver salts)

Soapstone

(No CAS)

No – interim

-

6

3 (respirable)

-

6 (total dusts)

3 (respirable)

Sodium azide

26628-22-8

Yes - interim

0.11 (peak limitation)

0.3 (peak limitation)

0.04

0.11 (peak limitation)

0.1

0.3 (peak limitation)

Sodium bisulphite

7631-90-5

No

-

5

-

5

Sodium fluoroacetate

62-74-8

Yes

-

0.05

0.15 (STEL)

-

0.05

Sodium hydroxide

1310-73-2

No

-

2

(peak limitation)

-

2

(peak limitation)

Sodium metabisulphite

7681-57-4

No

-

5

-

5

Starch

9005-25-8

No

-

10

-

10

Stearates

(No CAS)

Yes

-

10

-

10 (inhalable)

3 (respirable)

Stibine

7803-52-3

Yes - removal

0.1

0.51

Not recommended

Not recommended

Strychnine

57-24-9

No

-

0.15

-

0.15

Styrene, monomer


100-42-5

Yes

50

100 (STEL)

213

426 (STEL)

20

40 (STEL)

85

170 (STEL)

Subtilisins (Proteolytic enzymes as 100% pure crystalline enzyme)

1395-21-7

9014-01-1

No

-

0.06 µg/m3

(peak limitation)

-

0.06 µg/m3

(peak limitation)

Sucrose

57-50-1

No

-

10

-

10

Sulfotep

3689-24-5

Yes - removal

0.007

0.1

Not recommended

Not recommended

Sulphur dioxide

7446-09-5

Yes

2

5 (STEL)

5.2

13 (STEL)

0.25 (STEL)

0.65 (STEL)

Sulphur hexafluoride

2551-62-4

No

1000

5970

1000

5970

Sulphur monochloride

10025-67-9

No – interim

1

(peak limitation)

5.5

(peak limitation)

1

(peak limitation)

5.5

(peak limitation)

Sulphur pentafluoride

5714-22-7

Yes – removal

0.01

(peak limitation)

0.1

(peak limitation)

Not recommended

Not recommended

Sulphur tetrafluoride

7783-60-0

No – interim

0.1

(peak limitation)

0.44

(peak limitation)

0.1

(peak limitation)

0.44

(peak limitation)

Sulphuric acid

7664-93-9

Yes

-

1

3 (STEL)

-

0.1

Sulfuryl fluoride (Sulphurly)

2699-79-8

Yes – removal

5

10 (STEL)

21

42 (STEL)

Not recommended

Not recommended

Sulprofos

35400-43-2

Yes

-

1

0.008

0.1

Synthetic mineral fibres (SMF) or Man-made vitreous fibres (MMVF)

(No CAS)



No

0.5 f/mL (respirable)

2 (inhalable)


0.5 f/mL (respirable)


2 (inhalable)

2,4,5-T

93-76-5

No

-

10

-

10

Talc, (containing no asbestos fibres)

14807-96-6

Yes

-

2.5 (respirable)

-

2 (respirable)

Tantalum, metal & oxide dusts

7440-25-7

No

-

5

-

5

Tellurium & compounds (as Te)

13494-80-9

No

-

0.1

-

0.1

Tellurium hexafluoride (as Te)

7783-80-4

No

0.02

0.1

0.02

0.1

Temephos

3383-96-8

Yes

-

10

0.1

2

TEPP

107-49-3

Yes – removal

0.004

0.047

Not recommended

Not recommended

Terephthalic Acid

100-21-0

New

-

-

-

5

Terphenyls

26140-60-3

No

0.5

(peak limitation)

4.7

(peak limitation)

0.5

(peak limitation)

4.7

(peak limitation)

1,1,2,2-Tetrabromoethane

79-27-6

No

1

14

1

14

1,1,2,2-Tetrachloro-1,2-difluoroethane

76-12-0

No

500

4170

500

4170

1,1,1,2-Tetrachloro-2,2-difluoroethane

76-11-9

No – interim

500

4170

500

4170

1,1,2,2-Tetrachloroethane

79-34-5

No

1

7

1

7

Tetrachloronaphthalene

1335-88-2

Yes – removal

-

2

Not recommended

Not recommended

Tetraethyl lead (as Pb)

78-00-2

No

-

0.1

-

0.1

1,1,1,2-Tetrafluoroethane

811-97-2

No

1000

4240

1000

4240

Tetrafluoroethylene

116-14-3

New

-

-

2

8.2

Tetrahydrofuran

109-99-9

Yes

100

295

50

147

Tetramethyl lead (as Pb)

75-74-1

No

-

0.15

-

0.15

Tetramethyl succinonitrile

3333-52-6

No

0.5

2.8

0.5

2.8

Tetranitromethane

509-14-8

Yes – removal

1

8

Not recommended

Not recommended

Tetrasodium pyrophosphate

7722-88-5

No

-

5

-

5

Tetryl

479-45-8

No – interim

-

1.5

-

1.5

Thallium, soluble compounds (as Tl)

7440-28-0

Yes

-

0.1

-

0.02

4,4'-Thiobis (6-tert-butyl-m-cresol)

96-69-5

No -interim

-

10

-

10

Thioglycolic acid

68-11-1

No

1

3.8

1

3.8

Thionyl chloride

7719-09-7

Yes

1

(peak limitation)

4.9

(peak limitation)

0.2

(peak limitation)

1

(peak limitation)

Thiram

137-26-8

No

-

1

-

1

Tin, organic compounds (as Sn)

(No CAS)

Yes

-

0.1

0.2 (STEL)

-

0.1

Tin (metal and inorganic compounds)

7440-31-5

No

-

2

-

2

Titanium dioxide

13463-67-7

Yes

-

10

-

1 (inhalable)

o-Tolidine

119-93-7

New – interim

-

-

Not recommended

Not recommended

Toluene

108-88-3

Yes

50

150 (STEL)

191

574 (STEL)

20

75

m-Toluidine

108-44-1

No - interim

2

8.8

2

8.8

o-Toluidine

95-53-4

No – interim

2

8.8

2

8.8

p-Toluidine

106-49-0

No – interim

2

8.8

2

8.8

Tributyl phosphate

126-73-8

No

0.2

2.2

0.2

2.2

1,1,2-Trichloro-1,2,2-trifluoroethane

76-13-1

No

1000

1250 (STEL)

7670

9590 (STEL)

1000

1250 (STEL)

7670

9590 (STEL)

Trichloroacetic acid

76-03-9

No

1

6.7

1

6.7

1,2,4-Trichlorobenzene

120-82-1

No

5

(peak limitation)

37

(peak limitation)

5

(peak limitation)

37

(peak limitation)

1,1,1-Trichloroethane

71-55-6

No

100

200 (STEL)

555

1110 (STEL)

100

200 (STEL)

555

1110 (STEL)

1,1,2-Trichloroethane

79-00-5

No

10

55

10

55

Trichloroethylene

79-01-6

No

10

40 (STEL)

54

216 (STEL)

10

40 (STEL)

54

216 (STEL)

Trichlorofluoromethane

75-69-4

No

1000

(peak limitation)

5620

(peak limitation)

1000

(peak limitation)

5620

(peak limitation)

Trichloronaphthalene

1321-65-9

Yes – removal

-

5

-

Not recommended

1,2,3-Trichloropropane

96-18-4

No - interim

10

60

10

60

Triethanolamine

102-71-6

No

-

5

-

5

Triethylamine

121-44-8

Yes

2

4 (STEL)

8

17 (STEL)

1

2 (STEL)

4.2

8.4 (STEL)

Trifluorobromomethane

75-63-8

No

1000

6090

1000

6090

Triglycidylisocyanurate (TGIC)

2451-62-9

Yes – interim

-

0.08

-

0.05

Trimellitic anhydride

552-30-7

Yes

0.005

0.039

0.06 ppb

0.02 ppb (peak limitation)

0.5 µg/m3

2 µg/m3 (peak limitation)

Trimethylamine

75-50-3

No

10

15 (STEL)

24

36 (STEL)

10

15 (STEL)

24

36 (STEL)

2,4,5-Trimethylaniline

137-17-7

New

-

-

Not recommended

Not recommended

Trimethylbenzene (all isomers)

25551-13-7
526-73-8
95-63-6
108-67-8

New

-

-

20

100

Trimethyl phosphite

121-45-9

No

2

10

2

10

2,4,6-Trinitrotoluene (TNT)

118-96-7

Yes

-

0.5

-

0.1

Triorthocresyl phosphate


78-30-8

No – interim

-

0.1

-

0.1

Triphenyl amine

603-34-9

No – interim

-

5

-

5

Triphenyl phosphate

115-86-6

No

-

3

-

3

Tungsten, soluble and insoluble compounds (as W)

7440-33-7

Yes

-

5 (insoluble)

10 (STEL – insoluble)

1 (soluble)

3 (STEL – soluble)

-

3 (respirable)

Turpentine (wood)

8006-64-2

Yes – interim

100

557

20

112

Uranium (natural), soluble & insoluble compounds (as H)

7440-61-1

Yes

-

0.2

0.6 (STEL)

-

0.2

Urethane

51-79-6

New

-

-

Not recommended

Not recommended

n-Valeraldehyde

110-62-3

No

50

176

50

176

Vanadium (as V2O5), (respirable dust & fume)

1314-62-1

No

-

0.05

-

0.05 (inhalable)

Vegetable oil mists (except castor oil, cashew nut or similar irritant oils)

(No CAS)

Yes - removal

-

10

-

Not recommended

Vinyl acetate

108-05-4

Yes

10

20 (STEL)

35

70 (STEL)

10

15 (STEL)

35

53 (STEL)

Vinyl bromide

593-60-2

Yes – interim

5

22

0.5

2.2

Vinyl chloride, monomer

75-01-4

Yes

5

13

7 ppb

18.2 µg/m3

4-Vinyl Cyclohexene

100-40-3

New

-

-

Not recommended

Not recommended

Vinyl cyclohexene dioxide

106-87-6

No

10

57

10

57

N-Vinyl-2-pyrrolidone

88-12-0

New

-

-

0.01

0.046

Vinyl toluene

25013-15-4

Yes

50

100 (STEL)

242

483 (STEL)

20

40 (STEL)

97

193 (STEL)

Vinylidene chloride

75-35-4

No

5

20 (STEL)

20

79 (STEL)

5

20 (STEL)

20

79 (STEL)

Vinylidene Fluoride

75-38-7

New

-

-

Not recommended

Not recommended

Warfarin

81-81-2

Yes

-

0.1

-

0.01

Welding fumes (not otherwise classified)

(No CAS)

Yes

-

5

-

Not recommended

Wood dust

(No CAS)

Yes

-

Various

-

0.5

Xylene (o-, m-, p- isomers)




1330-20-7

95-47-6

108-38-3

106-42-3

No

80

150 (STEL)

350

655 (STEL)

80

150 (STEL)

350

655 (STEL)

m-Xylene-alpha,alpha'-diamine

1477-55-0

No

-

0.1

(peak limitation)

-

0.1

(peak limitation)

Xylidine (all isomers)

1300-73-8

87-62-7

No

0.5

2.5

0.5

2.5

Yttrium, metal & compounds (as Y)

7440-65-5

No – interim

-

1

-

1

Zinc chloride (fume)

7646-85-7

Yes

1

2

-

2 (STEL)

Zinc oxide (fume & dust)

1314-13-2

Yes

-

Various

10 (STEL)

-

2 (fume and dust)

10 STEL

Zirconium compounds (as Zr)


Yes - interim

-

5

10 (STEL)

-

5

For any assistance in providing your comments please contact us at WESconsult@swa.gov.au.