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CHEMICAL
SUBSTANCES TLVs®
2004
NOTICE OF INTENDED CHANGES (NIC)
Acrylamide
Arsine
Beryllium and compounds
Borate compounds, Inorganic
Borates, tetra, sodium salts (withdraw
Documentation and adopted TLVs®;
see Borate compounds, inorganic)
1-Bromopropane
n-Butyl glycidyl ether [BGE]
Copper and inorganic compounds
Copper (withdraw Documentation and
adopted TLVs®; see Copper and
inorganic compounds)
Dichloroacetic acid
Dimethyl disulfide
Ethylene
Fensulfothion
Gallium arsenide
Hydrogen fluoride
Hydrogen sulfide
Manganese and inorganic compounds
(withdraw from the NIC)
Mineral oil
Monochloroacetic acid
Oil mist, mineral (withdraw
Documentation and adopted TLVs®;
see entry for Mineral oil)
Phorate
Propylene
Silica Crystalline – α-Quartz and Cristabolite
Silica Crystalline – Tridymite and Tripoli
(withdraw Documentation and adopted
TLV®)
Sulfotepp (TEDP)
Temephos
Tetrahydrofuran
Tetrakis phosphonium salts
Wood dusts
2004 ADOPTIONS
Aliphatic hydrocarbon gases,
Alkane [C1-C4]
Allyl propyl disulfide
Butane (withdraw Documentation and
adopted TLV®; see Aliphatic
hydrocarbon gases; Alkane [C1-C4] [C1-C4])
Carbofuran
Dimethyl sulfide
Dodecyl mercaptan
Ethane (withdraw Documentation and
status as simple asphyxiant; see
Aliphatic hydrocarbon gases;
Alkane [C1-C4])
Hexahydrophthalic anhydride, All isomers
Hydrogen bromide
L.P.G. (Liquefied petroleum gas)
(withdraw Documentation and adopted
TLV®; see Aliphatic hydrocarbon
gases; Alkane [C1-C4])
Methane (withdraw Documentation and
status as simple asphyxiant;
see Aliphatic hydrocarbon
gases; Alkane [C1-C4])
Natural gas (see Aliphatic hydrocarbon
gases; Alkane [C1-C4])
Natural rubber latex, as total proteins
Perfluorobutyl ethylene
Phenyl mercaptan
Propane (withdraw Documentation and
adopted TLV®; see Aliphatic
hydrocarbon gases; Alkane [C1-C4])
n-Propanol
Pyridine
Sulfuric acid
Toluene-2,4- or -2,6-diisocyanate
APPENDIX B: Substances of Variable
Composition (Appendix withdrawn)
B1: Polytetrafluorethylene decomposition
products (Documentation withdrawn as a
result of Appendix removal)
B2: Welding fumes (not otherwise specified)
(Documentation and TLV® withdrawn
as a result of Appendix removal)
APPENDIX C: Threshold Limit Values for
Mixtures (New Appendix adopted)
2004 UNDER STUDY LIST
Alachlor
Aldrin
Aluminum and compounds
α-Amylase
Bromochloromethane
Bromodichloromethane
Bromoform
1-Butene
2-Butene
sec-Butyl acetate
tert-Butyl hydroquinone [TBHQ]
Calcium carbonate
Calcium silicate
Calcium sulfate
Carbaryl
Carbon black
Carbon disulfide
Chrysene
Coal tar pitch volatiles, as benzene solubles
Coumaphos
Creosote
Cresol
2,4-D
1,3-Dichloropropene
Dieldrin
Diesel exhaust
Diesel fuel (individual TLVs® for vapor
and aerosol)
Diethanolamine
1,4-Diethyl benzene
Diethylene glycol monobutyl ether
N,N-Diethylhydroxylamine [DEHA]
Diglycidyl ether [DGE]
N,N-Dimethylacetamide
Dimethylformamide
Emery
Endosulfan
Ethanol [Ethyl alcohol]
2-Ethoxyethanol [EGEE]
2-Ethoxyethyl acetate [EGEEA]
Ethyl acrylate
Ethyl amyl ketone [5-Methyl-3-heptanone]
Ethyl benzene
Ethyl cyanoacrylate
Ethyl formate
Fenamiphos
Fenthion
Ferbam
Fonofos
Gasoline, all formulations
Hexafluoropropylene
Hydroquinone
Iron oxide/Rouge
Isoamyl alcohol
Isobutene, all isomers
Magnesite
Maleic anhydride
Manganese and inorganic compounds
Metal working fluids
Methanol
Methomyl
2-Methoxyethanol [EGME]
2-Methoxyethyl acetate [EGMEA]
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Methylacrylonitrile
Methyl n-amyl ketone [2-Heptanone]
Methyl cyclohexanol
Methyl demeton
Methyl ethyl ketone [2-Butanone]
Methyl isoamyl ketone
Methyl isobutyl ketone
1-Methyl naphthalene
2-Methyl naphthalene
Methyl parathion
Methyl propyl ketone [2-Pentanone]
α-Methyl styrene
Mineral spirits
Nickel carbonyl
Nitrogen trifluoride
5-Nitro-ortho-toluidine
Nonane
Pentachlorophenol
Perlite
Petroleum solvents
Phthalic anhydride
PNOS substances (e.g., where adopted
TLVs® were based directly or indirectly
on the old PNOC TLV®)
Polymeric MDI
Polynuclear aromatic hydrocarbons [PNAs]
Polyvinyl chloride (PVC) dust
Portland cement
n-Propanol
Propylene dichloride
Ronnel
Silica, Amorphous — Diatomaceous earth
Silica, Amorphous — Fume
Silica, Amorphous — Fused
Silica, Amorphous — Precipitated silica and gel
Silicon
Simazine
Subtilisins
Sulprofos
Tetrabromoethane
Tetraethyl pyrophosphate [TEPP]
Tetrasodium pyrophosphate
Thallium
4,4'-Thiobis(6-tert-butyl-m-cresol)
Thiram
Titanium dioxide
Toluene [Toluol]
Toluene-2,4- and 2,6-diisocyanate [TDI]
Trichloroacetic acid
1,2,3-Trichloropropane
Trichloroethylene
Trimellitic anhydride
Vanadium pentoxide
Vegetable oil mists
Other Issues
- Critical effects.
- Neurotoxicity.
- Skin notation.
- Group Guidance Values (GGV) for highly refined petroleum solvents
(C5-C15 hydrocarbons) [formerly Reciprocal Calculation Procedures (RCP)].
PHYSICAL
AGENTS TLVs®
2004
NOTICE OF INTENDED CHANGES (NIC)
Acoustic
— Noise
Ergonomics — Lifting
2004 ADOPTIONS
None
2004 UNDER STUDY LIST
- Ergonomics
- Hand Activity Level (HAL)
- Lasers
- Nonionizing Radiation and Fields
- Extremely low frequency (ELF) magnetic fields
- Contact currents
- Radiofrequency (RF) radiation and ultra-wide communications
- Light and near-infrared radiation
- Thermal Stress
- Cold stress
- Heat stress and strain
BIOLOGICAL
EXPOSURE INDICES (BEIs®)
2004
NOTICE OF INTENDED CHANGES (NIC)
Dichloromethane
Polycyclic aromatic hydrocarbons (PAHs)
Trichloroethylene
2004 ADOPTIONS
Aniline
Chromium (VI), Water-soluble fume
Cyclohexanol
Cyclohexanone
2004 UNDER STUDY LIST
Chemical Substances
Acrylonitrile
Aluminum
1,3-Butadiene
Carbon disulfide
Chlorobenzene
Ethyl benzene
Furfural
Mercury
Methanol
Methyl formate
n-Methyl pyrrolidone
Pentachlorophenol
Phenol
2-Propanol
Uranium, natural
Feasibility Assessment
Acrylonitrile
Antimony
Beryllium
Chlorpyrifos
1,4-Dichlorobenzene
2,4-Dichlorophenoxyacetic acid
2-Ethyl hexanoic acid
Hydrazines
Inorganic borates
Manganese
Methyl tert-butyl ether
Methyl n-butyl ketone
Nickel
Selenium
Trimethylbenzene
Vinyl chloride
Other Issues
- Genetic and macromolecular markers of exposure.
- Quality control in biological monitoring.
- Methemoglobin inducers.
- Effect of physical exertion on body burden and the BEI®.
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