Recommendations for Chemical Protective Clothing A Companion to the NIOSH Pocket Guide to Chemical Hazards TABLE T

Chemical	CAS No.	Recommendation for skin protection†	Recommended protective clothing barriers*
2,4,5-T	93-76-5	N.R.	Determine based on working conditions
Talc (containing no asbestos and less than 1% quartz)	14807-96-6	N.R.	Determine based on working conditions
Tantalum (metal and oxide dust, as Ta)	7440-25-7 (metal)	N.R.	Determine based on working conditions
TEDP	89-24-5	Prevent skin contact	Contact the manufacturer for recommendations
Tellurium	13494-80-9	N.R.	Determine based on working conditions
Tellurium hexafluoride	7783-80-4	N.R.	Determine based on working conditions
Temephos	3383-96-8	Prevent skin contact	Contact the manufacturer for recommendations
TEPP	107-49-3	Prevent skin contact	Contact the manufacturer for recommendations
o-Terphenyl	84-15-1	Prevent skin contact	Contact the manufacturer for recommendations
m-Terphenyl	92-06-8	Prevent skin contact	Contact the manufacturer for recommendations
p-Terphenyl	92-94-4	Prevent skin contact	Contact the manufacturer for recommendations
2,3,7,8-Tetrachlorodibenzo- p-dioxin	1746-01-6	Prevent skin contact	Contact the manufacturer for recommendations
1,1,1,2-Tetrachloro-2,2- difluoroethane	76-11-9	Prevent skin contact	Contact the manufacturer for recommendations
1,1,2,2-Tetrachloro-1,2- difluoroethane	76-12-0	Prevent skin contact	Contact the manufacturer for recommendations
1,1,1,2-Tetrachloroethane	630-20-6	Prevent skin contact	8 hr: PVA, Viton
1,1,2,2-Tetrachloroethane	79-34-5	Prevent skin contact	8 hr: PVA, Teflon, Viton, Barricade, Tychem
Tetrachloroethylene	127-18-4	Prevent skin contact	8 hr: PVA, Teflon, Viton, PE/EVAL, Barricade, CPF3, Responder, Trellchem, Tychem
Tetrachloronaphthalene	1335-88-2	Prevent skin contact	Contact the manufacturer for recommendations
Tetraethyl lead (as Pb)	78-00-2	Prevent skin contact (>0.1%)	8 hr: CPF3, Tychem
Tetrahydrofuran	109-99-9	Prevent skin contact	8 hr: Teflon, PE/EVAL, Barricade, CPF3, Responder, Trellchem, Tychem
Tetramethyl lead (as Pb)	75-74-1	Prevent skin contact (>0.1%)	Contact the manufacturer for recommendations
Tetramethyl succinonitrile	3333-52-6	Prevent skin contact	Contact the manufacturer for recommendations
Tetranitromethane	509-14-8	Prevent skin contact	Contact the manufacturer for recommendations
Tetrasodium pyrophosphate	7722-88-5	Prevent skin contact	Contact the manufacturer for recommendations
Tetryl	479-45-8	Prevent skin contact	Contact the manufacturer for recommendations
Thallium (soluble compounds, as Tl)		Prevent skin contact	Contact the manufacturer for recommendations for the specific compound
4,4'-Thiobis(6-tert- butyl-m-cresol)	96-69-5	N.R.	Determine based on working conditions
Thioglycolic acid	68-11-1	Prevent skin contact	8 hr: Butyl, Neoprene, Viton 4 hr: PE/EVAL
Thionyl chloride	7719-09-7	Prevent skin contact	Contact the manufacturer for recommendations
Thiram	137-26-8	Prevent skin contact	Contact the manufacturer for recommendations
Tin	7440-31-5	N.R.	Determine based on working conditions
Tin (organic compounds, as Sn)		Recommendations regarding personal protective clothing vary depending upon the specific compound.	Contact the manufacturer for recommendations for the specific compound
Tin(II) oxide (as Sn)	21651-19-4	N.R.	Determine based on working conditions
Tin(IV) oxide (as Sn)	18282-10-5	N.R.	Determine based on working conditions
Titanium dioxide	13463-67-7	N.R.	Determine based on working conditions
o-Tolidine	119-93-7	Prevent skin contact	Contact the manufacturer for recommendations
Toluene	108-88-3	Prevent skin contact	8 hr: PVA, Teflon, Viton, PE/EVAL, Barricade, CPF3, Responder, Trellchem, Tychem
Toluenediamine	25376-45-8 95-80-7 (2,4-TDA)	Prevent skin contact	Contact the manufacturer for recommendations
Toluene-2,4-diisocyanate	584-84-9	Prevent skin contact	8 hr: Butyl, Nitrile, PVA, PVC, Viton, Saranex, PE/EVAL, Barricade, CPF3, Responder 4 hr: Teflon
o-Toluidine	95-53-4	Prevent skin contact	8 hr: Barricade, Tychem 4 hr: Teflon, Saranex
m-Toluidine	108-44-1	Prevent skin contact	8 hr: Saranex
p-Toluidine	106-49-0	Prevent skin contact	Contact the manufacturer for recommendations
Tributyl phosphate	126-73-8	Prevent skin contact	4 hr: PE/EVAL
Trichloroacetic acid	76-03-9	Prevent skin contact	8 hr: Trellchem 4 hr: Nitrile
1,2,4-Trichlorobenzene	120-82-1	Prevent skin contact	8 hr: Teflon, Barricade 4 hr: Viton
1,1,2-Trichloroethane	79-00-5	Prevent skin contact	8 hr: Teflon, Viton, Tychem 4 hr: PVA
Trichloroethylene	79-01-6	Prevent skin contact	8 hr: PVA, Viton, PE/EVAL, Barricade, Trellchem, Tychem 4 hr: Teflon, Responder
Trichloronaphthalene	1321-65-9	Prevent skin contact	Contact the manufacturer for recommendations
1,2,3-Trichloropropane	96-18-4	Prevent skin contact	8 hr: Butyl, PVA, Viton
1,1,2-Trichloro-1,2,2- trifluoroethane	76-13-1	Prevent skin contact	8 hr: Nitrile, Teflon, Barricade, CPF3, Responder 4 hr: PVA, Viton, PE/EVAL
Triethylamine	121-44-8	Prevent skin contact	8 hr: Nitrile, Viton, Saranex, Responder, Trellchem, Tychem
Trifluorobromomethane	75-63-8	Frostbite	Prevent possible skin freezing from direct liquid contact
Trimellitic anhydride	552-30-7	Prevent skin contact	Contact the manufacturer for recommendations
Trimethylamine	75-50-3	Prevent skin contact (liquid)/ Frostbite	4 hr: Teflon Prevent possible skin freezing from direct liquid contact
1,2,3-Trimethylbenzene	526-73-8	Prevent skin contact	Contact the manufacturer for recommendations
1,2,4-Trimethylbenzene	95-63-6	Prevent skin contact	8 hr: PVA, Viton, PE/EVAL, Barricade, CPF3, Tychem 4 hr: Teflon, Responder
1,3,5-Trimethylbenzene	108-67-8	Prevent skin contact	Contact the manufacturer for recommendations
Trimethyl phosphite	121-45-9	Prevent skin contact	Contact the manufacturer for recommendations
2,4,6-Trinitrotoluene	118-96-7	Prevent skin contact	Contact the manufacturer for recommendations
Triorthocresyl phosphate	78-30-8	Prevent skin contact	Contact the manufacturer for recommendations
Triphenylamine	603-34-9	Prevent skin contact	Contact the manufacturer for recommendations
Triphenyl phosphate	115-86-6	N.R.	Determine based on working conditions
Tungsten	7440-33-7	N.R.	Determine based on working conditions
Tungsten (soluble compounds, as W)		Recommendations regarding personal protective clothing vary depending upon the specific compound.	Contact the manufacturer for recommendations for the specific compound
Tungsten carbide (cemented)	1: 11107-01-0 2: 12718-69-3 3: 37329-49-0	Prevent skin contact	Contact the manufacturer for recommendations
Turpentine	8006-64-2	Prevent skin contact	8 hr: Viton, PE/EVAL, Responder 4 hr: Nitrile, PVA, Teflon

Recommendations for skin protection^†

Prevent skin contact....	Wear appropriate personal protective clothing to prevent skin contact. Suggested barriers for use should be confirmed with the vendor and for additional information and use limitations.
Frostbite....................	Wear appropriate personal protective clothing to prevent the skin from becoming frozen from contact with the evaporating liquid or from contact with vessels containing the liquid.
N.R...........................	No specific recommendation can be made. Actual working conditions will determine the need and type of personal protective equipment.

†Bold type indicates a change from or an addition to what is published in the NIOSH Pocket Guide to Chemical Hazards, June 1997 Edition.

Recommended protective clothing barriers^*

Butyl = Butyl Rubber (Gloves, Suits, Boots) Natural = Natural Rubber (Gloves) Neoprene = Neoprene Rubber (Gloves, Suits, Boots) Nitrile = Nitrile Rubber (Gloves, Suits, Boots) PE = Polyethylene (Gloves, Suits, Boots) PVA = Polyvinyl Alcohol (Gloves) PVC = Polyvinyl Chloride (Gloves, Suits, Boots) Teflon = Teflon™ (Gloves, Suits, Boots)

Viton = Viton™ (Gloves, Suits) Saranex = Saranex™ coated suits PE/EVAL = 4H™ and Silver Shield™ brand gloves Barricade = Barricade™ coated suits CPF3 = CPF3™ suits Responder = Responder™ suits Trellchem = Trellchem HPS™ suits Tychem = Tychem 10000™ suits

8 hr = More than 8 hours of resistance to breakthrough >0.1 µg/cm²/min.

4 hr = At least 4 but less than 8 hours of resistance to breakthrough >0.1 µg/cm²/min.

*Neoprene is a tradename and Teflon™, Barricade™ and Tychem 10000™ are trademarks of the DuPont Company. Viton™ is a registered trademark of DuPont Dow Elastomers. Saranex is a tradename of the Dow Chemical Company. 4H is a trademark of the Safety 4 Company. Silver Shield is a trademark of the Siebe North Company. CPF3 and Responder are trademarks of the Kappler Company. Trellchem HPS is a trademark of the Trelleborg Company. Recommendations are NOT valid for very thin Natural Rubber, Neoprene, Nitrile, and PVC gloves (0.3 mm or less).

This page was last updated April 12, 1999

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