CHEMICAL SUBSTANCES TLVs^®
2006 NOTICE OF INTENDED CHANGES (NIC)
Alachlor
Aldrin
Arsine
Beryllium and compounds
Calcium carbonate (withdraw Documentation and
    adopted TLV^® due to insufficient data)
Carbaryl
Copper and inorganic compounds
Copper (withdraw Documentation and adopted
    TLVs^®; see NIC entry for Copper and inorganic
    compounds)
Diglycidyl ether [DGE]
Dimethyl carbamoyl chloride
Dimethyl disulfide
Dinitolmide (withdraw Documentation and adopted
    TLVs^®; see NIC entry for 3,5-Dinitro-o
    -toluamide and inorganic compounds)
3,5-Dinitro-o-toluamide
Ethyl amyl ketone
Hexafluoropropylene
Hydrogen sulfide
Hydroquinone
Methyl demeton
1-Methyl naphthalene and 2-Methyl naphthalene
Methyl propyl ketone
α-Methyl styrene
Mineral oil
5-Nitro-o-toluidine
Oil mist, mineral (withdraw Documentation and
    adopted TLVs^®; see NIC entry for Mineral
    oil)
Portland cement
n-Propanol
Sulprofos
1,1,1,2-Tetrachloro-2,2-difluoroethane
1,1,2,2-Tetrachloro-1,2-difluoroethane
Tetraethyl pyrophosphate [TEPP]
Thiram
Toluene
Toluene-2,4- or 2,6-diisocyanate
Trichloroethylene
Vanadium pentoxide

2006 ADOPTIONS
Calcium sulfate
Carbon disulfide
Coumaphos
Fenamiphos
Fenthion
Fonofos
Iron oxide
Iron oxide dust & fume (Documentation and
    adopted TLV^® withdrawn; see entry for
    Iron oxide)
Magnesite (Documentation and adopted
    TLV^® withdrawn due to insufficient data)
2-Methoxyethanol (EGME)
2-Methoxyethyl acetate (EGMEA)
Monochloroacetic acid
Perlite (Documentation and adopted TLV^®
    withdrawn due to insufficient data)
Propylene
Propylene dichloride
Ronnel
Rouge (Documentation and adopted TLV^®
    withdrawn; see entry for Iron oxide)
Silica, Amorphous — Diatomaceous earth
    (uncalcined) (Documentation and adopted
    TLV^® withdrawn due to insufficient data
    on single-substance exposure; most are
    co-exposure with Crystalline silica)
Silica, Amorphous — Precipitated silica and
    silica gel (Documentation and adopted
    TLV^® withdrawn due to insufficient data)
Silica, Amorphous — Silica fume (Documentation
    and adopted TLV^® withdrawn due to
    insufficient data)
Silica, Amorphous — Silica, fused
    (Documentation and adopted TLV^® withdrawn
    due to insufficient data)
Silica, Crystalline — α-Quartz and Cristobalite
Silica, Crystalline — Tripoli (Documentation and
    adopted TLV^® withdrawn; see entry for
    Silica, Crystalline — α-Quartz and
    Cristobalite)
Silicon (Documentation and adopted TLV^®
    withdrawn due to insufficient data)
1,1,2,2-Tetrabromoethane
Tetrasodium pyrophosphate (Documentation and
    adopted TLV^® withdrawn due to insufficient
    data)
Vegetable oil mist (Documentation and adopted
    TLV^® withdrawn due to insufficient data)

2006 UNDER STUDY LIST
Acetaldehyde
Acetophenone
Aluminum and compounds
Aluminum oxide
α-Amylase
Atrazine (and related symmetrical triazines)
Benomyl
Benz[a]anthracene
Benzo[b]fluoranthene
Benzo[a]pyrene
Boron tribromide
Bromochloromethane
Bromodichloromethane
Bromoform
Butene, All isomers (e.g., 1-butene, 2-butene-cis,
    2-butene-trans, isobutene)
sec-Butyl acetate
Butylated hydroxytoluene [BHT]
Calcium silicate
Carbon black
Chrysene
Clopidol
Coal tar pitch volatiles
Cotton dust, raw
Creosote
Cresol
2,4-D
Dibutyl phosphate
3,3'-Dichlorobenzidine
1,3-Dichloro-5,5-dimethyl hydantoin
Dieldrin
Diesel fuel (individual TLVs^® for vapor
    and aerosol)
Diethanolamine
1,4-Diethyl benzene
Diethylene glycol monobutyl ether
Diethylhydroxyamine [DEHA]
N,N-Dimethylacetamide
Dimethylformamide
Emery
Endosulfan
Ethanol [Ethyl alcohol]
2-Ethoxyethanol [EGEE]
2-Ethoxyethyl acetate [EGEEA]
Ethyl benzene
Ethyl cyanoacrylate
Ethylenimine
Ethyl formate
Ethylidene norbornene
Ferbam
Gasoline, all formulations
Hafnium and compounds
Hexamethyl diisocyanate
Indene
Iodine
Isophorone diisocyanate
Lead arsenate
Maleic anhydride
Manganese and inorganic compounds

2006 ADOPTIONS
Carcinogenicity Designations
Acoustic — Noise
Nonionizing Radiation and Fields —
    Sub-Radiofrequency (30 kHz and below)
    Magnetic Fields
Nonionizing Radiation and Fields —
    Sub-Radiofrequency (30 kHz and below)
    Static Electric Fields
Nonionizing Radiation and Fields —
    Radiofrequency and Microwave Radiation

2006 UNDER STUDY LIST

1. Ergonomics
   • Localized fatigue
   • Hand-arm vibration
2. Lasers
3. Nonionizing Radiation and Fields
   • Electromagnetic interference in medical devices
   • Static magnetic fields
4. Thermal Stress
   • Cold stress

BIOLOGICAL EXPOSURE INDICES (BEIs^®)
2006 NOTICE OF INTENDED CHANGES (NIC)
2-Butoxyethanol
Chlorobenzene
Ethyl benzene
Furfural
N-Methyl-2-Pyrrolidone
Tetrahydrofuran
Trichloroethylene

2006 ADOPTIONS
1,3-Butadiene
2-Propanol

2006 UNDER STUDY LIST
Chemical Substances
Alachlor
Aluminum
Arsine
Beryllium
Carbon disulfide
Fluorides
Mercury
2-Methoxyethanol/2- Methoxyethyl acetate
Pentachlorophenol
Tetrachloroethylene
Trichloroethylene
Uranium
Vanadium pentoxide

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
Methyl formate
Nickel
Selenium
Trimethylbenzene
Vinyl chloride

Other Issues

1. Genetic and macromolecular markers of exposure.
2. Quality control in biological monitoring.
3. Metabolic polymorphism.
4. Effect of physical exertion on body burden and the BEI^®.
5. Need for additional notations.
6. Consistency.