CHEMICAL SUBSTANCES TLVs^®
2010 NOTICE OF INTENDED CHANGES (NIC)
Acetic anhydride
Allyl bromide
Allyl chloride
Calcium silicate
Carbon black
Ethyl benzene
Maleic anhydride
Manganese, elemental and inorganic
    compounds
Methylacrylonitrile
Methyl isopropyl ketone
2,4-Pentanedione
Piperazine
Piperazine dihydrochloride (withdraw adopted
    Documentation and TLV^®)
Soapstone (withdraw adopted Documentation
    and TLV^®)
4,4'-Thiobis(6-tert-butyl-m-cresol)
Toluene-2,4- or 2,6-diisocyanate (or as
    a mixture)

2010 ADOPTIONS
Citral
Cotton dust, raw, untreated
Cresol, all isomers
Dieldrin
Hexafluoropropylene
Hydrogen sulfide
Methyl isobutyl ketone
α-Methyl styrene
Mineral oil, excluding metal working fluids
Oil mist, mineral (Documentation and
    adopted TLV^® withdrawn; see Mineral oil,
    excluding metal working fluids)
Portland cement
Silica, Crystalline: a-Quartz and Cristobalite
Talc
Tantalum and Tantalum oxide dusts,
    as Ta (Documentation and adopted
    TLV^® withdrawn due to insufficient data)
Thallium and compounds, as TI
Thionyl chloride
Wood Dusts

2010 UNDER STUDY LIST
Acetaldehyde
Acetone
Aliphatic hydrocarbon gases
tert-Amyl methyl ether
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
Butane
sec-Butyl acetate
tert-Butyl hydroperoxide
N-Butyl isocyanate
Butylated hydroxytoluene [BHT]
Calcium silicate, synthetic nonfibrous
Carbonyl sulfide
Chlorine
Chrysene
Clopidol
Coal tar pitch volatiles
Cobalt
Creosote
Cyanogen chloride
2,4-D
Diacetyl
Dibutyl phthalate
3,3'-Dichlorobenzidine
1,3-Dichloro-5,5-dimethyl hydantoin
Dicyclopentadiene
Diethyl phthalate
Diethylene glycol monobutyl ether
Diethylhydroxyamine [DEHA]
Diisobutyl ketone
N,N-Dimethyl acetamide
Dimethylformamide
Dipropyl ketone
Ethane
Ethyl cyanoacrylate
Ethyl formate
Ethyl isocyanate
Ethylene oxide
Ethylidene norbornene
Gasoline, all formulations
Glycerin, mist
Hexamethylene diisocyanate
Iodoform
Isobutane
Isophorone diisocyanate
d-Limonene
Liquefied petroleum gas
Lithium hydride
Lithium hydroxide
Mercury, alkyl compounds
Methane
Methomyl
Methyl acetate
Methyl formate
Methyl isoamyl ketone
Methyl isocyanate
Methylene bis (4-cyclohexylisocyanate)
Methylene bisphenyl isocyanate [MDI]
Naphthalene
1-Naphthylamine
2-Naphthylamine
Natural gas
Nickel carbonyl
Nitrogen dioxide
n-Nonane
Nonane, all isomers
Paraquat
Pentachlorophenol

PHYSICAL AGENTS TLVs^®
2010 NOTICE OF INTENDED CHANGES (NIC)
Electromagnetic Radiation and Fields
    — Lasers

2010 ADOPTIONS
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
    — Ionizing Radiation

2010 UNDER STUDY LIST

1. Ergonomics
   • Hand-arm vibration
   • Localized fatigue
   • Whole body vibration
2. Thermal Stress
   • Cold stress

BIOLOGICAL EXPOSURE INDICES (BEIs^®)
2010 NOTICE OF INTENDED CHANGES (NIC)
There are no substances proposed for the 2010 Notice of Intended Changes

2010 ADOPTIONS
2-Methoxyethanol (EGME)/2-Methoxyethyl
    acetate (EGMEA)
Methyl isobutyl ketone (MIBK)
Polycyclic Aromatic Hydrocarbons (PAHs)
Toluene
Uranium
Vanadium pentoxide (adopted
    Documentation and BEI^® withdrawn
    due to new data)

2010 UNDER STUDY LIST
Chemical Substances
Beryllium
3,3-Dichlorobenzidine
N,N-Dimethylacetamide
Ethyl benzene
Ethylene oxide
Fluorides
Manganese
Mercury
Methyl ethyl ketone
α-Methyl styrene
Naphthalene
Pentachlorophenol
Thallium
Toluene diisocyanate
Vanadium pentoxide
Xylenes

Other Issues

1. Metabolic polymorphisms
2. Consistency of BEI^® Documentation
3. BEI^® Sampling Strategies/Frequency of Sampling

Feasibility Assessment
Acrylonitrile
Alachlor
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
Vanadium pentoxide
Vinyl chloride