CHEMICAL SUBSTANCES TLVs^®
2009 NOTICE OF INTENDED CHANGES (NIC)
Citral
Cotton dust, raw
Cresol, all isomers
Dieldrin
Ethyl benzene
Hydrogen sulfide
Maleic anhydride
Manganese and inorganic compounds
Methyl isobutyl ketone
α-Methyl styrene
Mineral oil
Oil mist, mineral (withdraw adopted
     Documentation and TLVs^®; see
    NIC entry for Mineral oil)
Portland cement
Soapstone (withdrawn from the Notice
    of Intended Changes)
Talc (withdrawn from the Notice of
    Intended Changes)
Tantalum and tantalum oxide dusts (withdraw
    adopted Documentation and TLV^®
    due to insufficient data)
Thallium and compounds
4,4'-Thiobis(6-tert-butyl-m-cresol)
Thionyl chloride
Toluene-2,4- or 2,6-diisocyanate

2009 ADOPTIONS
Beryllium and compounds
Bromoform
Dibutyl phosphate
Diethanolamine
Endosulfan
Ethanol
Ethyleneimine
Ferbam
Lead arsenate (Documentation and
    adopted TLV^® withdrawn due to
    insufficient data)
Methyl parathion
Propyleneimine
Rubber solvent (Naphtha) (Documentation
    and adopted TLV^® withdrawn; see
    Appendix H: Reciprocal calculation
    method for certain refined hydrocarbon
    solvent vapors)
Sulfur dioxide
Sulprofos
Vanadium pentoxide
VM & P naphtha (Documentation and
    adopted TLV^® withdrawn; see Appendix H:
    Reciprocal calculation method for certain
    refined hydrocarbon solvent vapors)

2009 UNDER STUDY LIST
Acetaldehyde
Acetic anhydride
Allyl bromide
Allyl chloride
Atrazine (and related symmetrical
    triazines)
Barium sulfate
Benz[a]anthracene
Benzidine
Benzo[b]fluoranthene
Benzo[a]pyrene
Bisphenol A
Boron tribromide
Boron trifluoride
Bromodichloromethane
1-Bromopropane
sec-Butyl acetate
Butylated hydroxytoluene [BHT]
tert-Butyl hydroperoxide
Calcium silicate
Carbon black
Chlorine
Chrysene
Clopidol
Coal tar pitch volatiles
Creosote
2,4-D
Diacetyl
Dibutyl phthalate
3,3'-Dichlorobenzidine
1,3-Dichloro-5,5-dimethyl hydantoin
Dicyclopentadiene
Diethylene glycol monobutyl ether
Diethylhydroxyamine [DEHA]
Diisobutyl ketone
N,N-Dimethyl acetamide
Dimethylformamide
Dipropyl ketone
Ethyl cyanoacrylate
Ethylene oxide
Ethyl formate
Ethylidene norbornene
Gasoline, all formulations
Glycerin, mist
Hexamethylene diisocyanate
Iodoform
Isobutane
Isophorone diisocyanate
Lithium hydride
Methomyl
Methyl acetate
Methylacrylonitrile
Methylene bis(4-cyclohexylisocyanate)
Methylene bisphenyl isocyanate [MDI]
Methyl formate
Methyl isoamyl ketone
Methyl isopropyl ketone
Naphthalene
ß-Naphthylamine
Nickel carbonyl
Nitrogen dioxide
Nonane
Paraquat
Pentachlorophenol
2,4-Pentanedione

PHYSICAL AGENTS TLVs^®
2009 NOTICE OF INTENDED CHANGES (NIC)
Electromagnetic Radiation and Fields
    — Sub-Radiofrequency and Static
    Electric Fields
Electromagnetic Radiation and Fields
    — Radiofrequency and Microwave
    Radiation
Electromagnetic Radiation and Fields
    — Ultraviolet Radiation
Electromagnetic Radiation and Fields
    — Lasers
Electromagnetic Radiation and Fields
    — Ionizing Radiation

2009 ADOPTIONS
Electromagnetic Radiation and Fields
    — Static Magnetic Fields

2009 UNDER STUDY LIST

1. Ergonomics
   • Introduction/Statement on
     work-related musculoskeletal disorders
   • Hand-arm vibration
   • Localized fatigue
   • Whole body vibration
2. Thermal Stress
   • Cold stress

BIOLOGICAL EXPOSURE INDICES (BEIs^®)
2009 NOTICE OF INTENDED CHANGES (NIC)
2-Methoxyethanol/2-Methoxyethyl
    acetate
Methyl isobutyl ketone
Toluene
Uranium
Vanadium pentoxide (withdraw
    adopted Documentation and BEI^®
    due to new data)

2009 ADOPTIONS
Carbon disulfide
Tetrachloroethylene

2009 UNDER STUDY LIST
Chemical Substances
Alachlor
Beryllium
Fluorides
Manganese
Mercury
α-Methyl styrene
Naphthalene
Pentachlorophenol
Polycyclic aromatic hydrocarbons
    (PAHs)
Thallium
Toluene diisocyanate
Vanadium pentoxide
Xylenes

Other Issues

1. Metabolic polymorphisms.
2. 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