CHEMICAL SUBSTANCES TLVs^®
2008 NOTICE OF INTENDED CHANGES (NIC)
Beryllium and compounds
Bromoform
Cresol, All isomers
Dibutyl phosphate
Diethanolamine
Endosulfan
Ethanol
Ethyleneimine
Ferbam
Hydrogen sulfide
Lead arsenate (withdraw adopted
    Documentation and TLV^® due to
    insufficient data)
Methyl isobutyl ketone
Methyl parathion
α-Methyl styrene
Mineral oil
Oil mist, mineral (withdraw adopted
    Documentation and TLVs^®; see NIC entry
    for Mineral oil)
Portland cement
Propyleneimine
Rubber solvent (Naphtha) (withdraw adopted
    Documentation and TLV^®; see NIC entry
    for Appendix H; Reciprocal calculation
    method for certain refined hydrocarbon
    solvent vapors)
Soapstone (withdraw adopted Documentation
    and TLVs^®; see NIC entry for Talc)
Sulfur dioxide
Sulprofos
Talc
4,4'-Thiobis(6-tert-butyl-m-cresol)
Thionyl chloride
Toluene-2,4- or 2,6-diisocyanate
Vanadium pentoxide
VM&P Naphtha (withdraw adopted
    Documentation and TLV^®; see NIC entry
    for Appendix H; Reciprocal calculation
    method for certain refined hydrocarbon
    solvent vapors)

2008 ADOPTIONS
Aluminum and compounds
    (Documentation and adopted TLVs^®
    withdrawn; see entry for Aluminum metal
    and insoluble compounds)
Aluminum metal and insoluble compounds
Aluminum oxide (Documentation and adopted
    TLV^® withdrawn; see entry for Aluminum
    metal and insoluble compounds)
Benomyl
Butenes, All isomers
Carbaryl
Emery (Documentation and adopted TLV^®
    withdrawn; see entry for Aluminum metal
    and insoluble compounds)
Hydroquinone
Indene
Iodine and iodides
Natural rubber latex
Polyvinyl chloride (PVC)
1,1,1,2-Tetrachloro-2,2,-difluoroethane
1,1,2,2-Tetrachloro-1,2-difluoroethane
Thiram
Trimellitic anhydride
Triphenyl amine (Documentation and adopted
    TLV^® withdrawn due to insufficient data)

2008 UNDER STUDY LIST
Acetaldehyde
Acetic anhydride
Acetophenone
Atrazine (and related symmetrical triazines)
Barium sulfate
Benz[a]anthracene
Benzo[b]fluoranthene
Benzo[a]pyrene
Bisphenol A
Boron oxide
Boron tribromide
Boron trifluoride
Bromodichloromethane
sec-Butyl acetate
Butylated hydroxytoluene [BHT]
tert-Butyl hydroperoxide
Calcium silicate
Carbon black
Cellulose
Chrysene
Citral
Clopidol
Coal tar pitch volatiles
Cotton dust, raw, untreated
Creosote
2,4-D
Dibutyl phthalate
3,3'-Dichlorobenzidine
1,3-Dichloro-5,5-dimethyl hydantoin
Dicyclopentadiene
Dieldrin
Diethylene glycol monobutyl ether
Diethylhydroxyamine [DEHA]
Diisobutyl ketone
N,N-Dimethylacetamide
Dimethylformamide
Dipropyl ketone
Ethyl benzene
Ethyl cyanoacrylate
Ethyl formate
Ethylidene norbornene
Gasoline, all formulations
Glycerin, mist
Hexamethyl diisocyanate
Hydrogen peroxide
Hydrogen selenide
Isobutane
Isophorone diisocyanate
Maleic anhydride
Manganese and inorganic compounds
Methanol
Methomyl
Methyl acetate
Methylacrylonitrile
Methylene bis (4-cyclohexylisocyanate)
Methylene bisphenyl isocyanate [MDI]
Methyl formate
Methyl isoamyl ketone
Methyl isopropyl ketone

PHYSICAL AGENTS TLVs^®
2008 NOTICE OF INTENDED CHANGES (NIC)
Electromagnetic Radiation and Fields
    — Static Magnetic Fields
Electromagnetic Radiation and Fields
    — Radiofrequency and Microwave
    Radiation
Electromagnetic Radiation and Fields
    — Lasers

2008 ADOPTIONS
Electromagnetic Radiation and Fields
    — Light and Near-Infrared Radiation
Electromagnetic Radiation and Fields
    — Lasers

2008 UNDER STUDY LIST

1. Acoustic
2. Electromagnetic Radiation and Fields
   • Radiofrequency and microwave radiation
   • Ultraviolet radiation
   • Lasers
   • Ionizing radiation
3. Ergonomics
   • Introduction/Statement on
     work-related musculoskeletal disorders
   • Hand-arm vibration
   • Localized fatigue
4. Thermal Stress
   • Cold stress

BIOLOGICAL EXPOSURE INDICES (BEIs^®)
2008 NOTICE OF INTENDED CHANGES (NIC)
Carbon disulfide
Tetrachloroethylene

2008 ADOPTIONS
Tetrahydrofuran
Trichloroethylene

2008 UNDER STUDY LIST
Chemical Substances
Beryllium
Fluorides
Mercury
2-Methoxyethanol/2-Methoxyethyl acetate
Methyl isobutyl ketone
α-Methyl styrene
Mineral oil
Pentachlorophenol
Toluene
Toluene diisocyanate
Uranium
Vanadium pentoxide

Other Issues

1. Metabolic polymorphisms.
2. Effects of physical exertion on body
   burden and the BEI^®.
3. Consistency of BEI^® Documentation.

Feasibility Assessment
Acrylonitrile
Aluminum
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
Perfluorooctanoic acid [PFOA]
Selenium
Trimethylbenzene
Vinyl chloride