WES review - Release 15 (Paraffin wax and others)

Release 15 closed on Monday 2 August 2021. 

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

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