CHEMICAL SUBSTANCES TLVs^®
2005 NOTICE OF INTENDED CHANGES (NIC)
Acetylene tetrabromide (withdraw
     Documentation and adopted TLV^®;
    see NIC entry for 1,1,2,2-Tetrabromomethane)
Alachlor
Arsine
Beryllium and compounds
Calcium carbonate
Calcium sulfate
Carbon disulfide
Copper and inorganic compounds
Copper (withdraw Documentation and adopted
     TLVs^®; see NIC entry for Copper and
     inorganic compounds)
Coumaphos
Dimethyl disulfide
Fenamiphos
Fenthion
Fonofos
Hydrogen sulfide
Iron oxide
Iron oxide dust & fume (withdraw Documentation
     and adopted TLV^®; see NIC entry
     for Iron oxide)
Magnesite (withdraw Documentation and adopted
     TLV^® due to insufficient data)
2-Methoxyethanol (EGME)
2-Methoxyethyl acetate (EGMEA)
Mineral oil
Monochloroacetic acid
Oil mist, mineral (withdraw Documentation and
     adopted TLVs^®; see NIC entry for
     Mineral oil)
Perlite (withdraw Documentation and adopted
     TLV^® due to insufficient data)
Portland cement
n-Propanol
Propylene
Propylene dichloride
Ronnel
Rouge (withdraw Documentation and adopted
     TLV^®; see NIC entry for Iron oxide)
Silica, Amorphous — Diatomaceous earth
     (uncalcined) (withdraw Documentation and
     adopted TLV^® due to insufficient data on
     single-substance exposure; most are
     co-exposure with Crystalline silica)
Silica, Amorphous — Precipitated silica and silica
     gel (withdraw Documentation and adopted
     TLV^® due to insufficient data)
Silica, Amorphous — Silica fume (withdraw
     Documentation and adopted TLV^® due to
     insufficient data)
Silica, Amorphous — Silica, fused (withdraw
     Documentation and adopted TLV^® due to
     insufficient data)
Silica, Crystalline — α-Quartz and Cristabolite
Silica, Crystalline — Tripoli (withdraw
     Documentation and adopted TLV^®; see NIC
     entry for Silica, Crystalline — α-Quartz and
     Cristabolite)
Silicon (withdraw Documentation and adopted
     TLV^® due to insufficient data)
1,1,2,2-Tetrabromomethane
Tetrasodium pyrophosphate (withdraw
     Documentation and adopted TLV^® due to
     insufficient data)
Vanadium pentoxide
Vegetable oil mist (withdraw Documentation
     and adopted TLV^® due to insufficient data)

2005 ADOPTIONS
Acrylamide
Borate compounds, Inorganic
Borates, tetra, sodium salts (Documentation
     and adopted TLVs^® withdrawn; see
     Borate compounds, inorganic)
1-Bromopropane
n-Butyl glycidyl ether [BGE]
Dichloroacetic acid
Ethylene
Fensulfothion
Gallium arsenide
Hydrogen fluoride
Phorate
Silica Crystalline — Tridymite (Documentation
     and adopted TLV^® withdrawn due
     to insufficient data)
Sulfotepp (TEDP)
Temephos
Tetrahydrofuran
Tetrakis (hydroxymethyl) phosphonium salts
Wood dusts

2005 UNDER STUDY LIST
Acetaldehyde
Aldrin
Aluminum and compounds
Aluminum oxide
α-Amylase
Atrazine (and related symmetrical triazines)
Benomyl
Benz[a]anthracene
Boron tribromide
Bromochloromethane
Bromodichloromethane
Bromoform
Butene, All isomers
sec-Butyl acetate
Calcium silicate
Carbaryl
Carbon black
Chrysene
Copper phthalocyanine
Cotton dust, raw
Cresol
2,4-D
Dieldrin
Diesel exhaust
Diesel fuel (individual TLVs^® for vapor
     and aerosol)
Diethanolamine
1,4-Diethyl benzene
Diethylene glycol monobutyl ether
Diethylhydroxyamine [DEHA]
Diglycidyl ether [DGE]
N,N-Dimethylacetamide
Dimethyl carbamoyl chloride
Dimethylformamide
Dimethyl phthalate
3,5-Dinito-o-toluamide [Dinitolmide]
Emery
Endosulfan
Ethanol [Ethyl alcohol]
2-Ethoxyethanol [EGEE]
2-Ethoxyethyl acetate [EGEEA]
Ethyl amyl ketone [5-Methyl-3-heptanone]
Ethyl benzene
Ethyl cyanoacrylate
Ethylenimine
Ethyl formate
Ferbam
Gasoline, all formulations
Hafnium and compounds
Hexafluoropropylene
Hexamethyl diisocyanate
Hydroquinone
Indene
Iodine
Isophorone diisocyanate
Lead arsenate
Maleic anhydride
Manganese and inorganic compounds
Metal working fluids
Methanol

PHYSICAL AGENTS TLVs^®
2005 NOTICE OF INTENDED CHANGES (NIC)
Carcinogenicity Designations
Acoustic — Noise
Nonionizing Radiation and Fields —
     Sub-Radiofrequency (30kHz and below)
     Magnetic Fields
Nonionizing Radiation and Fields —
     Sub-Radiofrequency (30kHz and below)
     and Static Electric Fields
Nonionizing Radiation and Fields —
     Radiofrequency and Microwave Radiation

2005 ADOPTIONS
Ergonomics — Lifting

2005 UNDER STUDY LIST

1. Ergonomics
   • Localized fatigue
   • Hand-arm vibration
2. Lasers
3. Nonionizing Radiation and Fields
   • Electromagnetic interference in medical devices
   • Light and near-infrared radiation
4. Thermal Stress
   • Cold stress
   • Heat stress and strain

BIOLOGICAL EXPOSURE INDICES (BEIs^®)
2005 NOTICE OF INTENDED CHANGES (NIC)
1,3-Butadiene
Ethyl benzene
2-Propanol
Trichloroethylene

2005 ADOPTIONS
Dichloromethane
Polycyclic aromatic hydrocarbons (PAHs)

2005 UNDER STUDY LIST
Chemical Substances
Aluminum
2-Butoxyethanol
Carbon disulfide
Chlorobenzene
Fluorides
Furfural
Mercury
Methyl formate
N-Methyl-2-pyrrolidone
Pentachlorophenol
Phenol
Tetrachloroethylene
Tetrahydrofuran
Uranium

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

1. Genetic and macromolecular markers of exposure.
2. Quality control in biological monitoring.
3. Methemoglobin inducers.
4. Effect of physical exertion on body burden and the BEI^®.