Substances and Agents Listing

ACGIH® Board Ratifies 2021 TLVs® and BEIs®

CLICK HERE to purchase 2021 Documentation below.

CHEMICAL SUBSTANCES TLVs®

2021 NOTICE OF INTENDED CHANGES (NIC)
Acetamiprid
Antimony Hydride
Benzoic Acid and Alkali Benzoates
Clothianidin
Cyclopentane
Cyromazine
Di(2-ethylhexyl) Phthalate
Dipropylene Glycol Methyl Ether
Ethyl Benzene
Ethylene Glycol Dinitrate
Imazosulfuron
Iodoform
Isoflurane
2-methyl-2-butene
Phosgene
Prometon
Prometryn
Titanium Dioxide
Trimetacresyl phosphate
Trimethyl Benzene
Triparacresyl phosphate
Xylene

2021 ADOPTIONS
Antimony Trioxide
Cumene
Hexamethylenetetramine
Isopropylamine
Ketene
Methylcyclohexanone
Mica
Perchloryl Fluoride
sec-Hexyl acetate
Titanium Tetrachloride
Toluene
Trichlorfon
Triflumizole

2021 UNDER STUDY LIST
Chemical Substances
Acetyl salicylic acid
Alkyl acrylates
Antimony and compounds
Bensulfide
Benzene
Benzidine
Benzoquinone
(1,3) beta, D-glucan
Bifenazate
Buprofezin
1,3-Butadiene
n-Butyl isocyanate
Carbon dioxide
Carbon monoxide
Carbon nanotubes
Catechol
Chlorodiphenyl, 42%
Chlorodiphenyl, 54%
Chloromethyl methyl ether
Cobalt carbonyl
Cobalt hydrocarbonyl
Copper
Crotonaldehyde
Diacetyl
Diazinon
Dicamba
1,1-Dichloro-1-nitroethane
1,3-Dichloro-5,5-dimethyl hydantoin
3,3ʹ-Dichlorobenzidine
1,2-Dichloropropane
Diesel exhaust
Difluorodibromomethane
Diiodomethyl p-tolyl sulfone
Dimethenamid-P
1,2-Dimethoxyethane
4,4-Dimethyloxazolidine
Dinotefuran
Divinylbenzene
Enflurane
Epichlorohydrin
Ethyl acrylate
Ethylene oxide
Ethyl ether
2-Ethyl hexane-1-ol
Fenoxycarb
Fluorides
Furan

Furfural
Furfuryl alcohol
Germanium tetrahydride
Glycidyl methacrylate
Glyphosate
Gram negative bacterial endotoxins
Hafnium and compounds
Halothane
Hexachloronapthalene
Hydrogen peroxide
Imidacloprid
Indium and compounds
Iodine and Iodides
Isoprene
4,4’-Isopropylidene diphenol
Lead and inorganic compounds
Lindane
Malathion
Manganese cyclopentadienyl tricarbonyl
Methylene bisphenyl isocyanate
Methyl acrylate
Methyl n-butyl ketone
2-Methylcyclopentadienyl manganese
tricarbony
Methyl naphthalene, All Isomers
Metribuzin
1-Naphthlamine
2-Naphthlamine
Neonicotinoids
Nickel and inorganic compounds, including
Nickel subsulfide
Nitric acid
Nitroglycerin
Octachloronaphthalene
Parathion
Pentaborane
Phenothiazine
Phenylenediamine (o,m,p)
Phosphoric acid
Phosphorus (red)
Phosphorus (white)
Phosphorus (yellow)
Propane sultone
n-Propyl nitrate
Propylene glycol dinitrate
Quinone
Sevoflurane
Silicic acid
Silicon carbide
Sodium hypochlorite
Sodium Silicate
Sodium sulfate
Stoddard solvent
Subtilisins
Sulfur trioxide
Talc
Tetrachlorophthalic anhydride
Tetrachlorvinphos
Tetraethyl lead
1,2,3,6-Tetrahydrophthalic anhydride
Tetramethyl lead
Thiamethoxam
Tin, organic compounds
Tolclofos-methyl
o-Toluidine
Trichloronaphthalene
Triclopyr
Triclosan
Triethanolamine
Trifloxystrobin
Trimethyl phosphite
Uranium and compounds
Vinylidene chloride
Vinylidene fluoride
Welding fume

PHYSICAL AGENTS TLVs®
2021 NOTICE OF INTENDED CHANGES (NIC)

Appendix C: Statement on Fatigue and its Management in the Workplace
Ultraviolet Radiation

2021 ADOPTIONS

Appendix B: Physiological Monitoring in the Workplace
Infrasound and Low-Frequency Sound
Ionizing Radiation
Lasers
Whole-Body Vibration

2021 UNDER STUDY LIST

Acoustic

  • Audible sound

Optical Radiation

  • Light and Near-infrared radiation

Ergonomics

  • Over shoulder work
  • Push/Pull
  • Upper limb localized fatigue

Thermal Stress

  • Heat stress and strain
  • Cold stress

Other Issues Under Study

  1. Head supported mass and neck loading
  2. Hypobaric pressure
  3. Personal physiologic monitoring

BIOLOGICAL EXPOSURE INDICES (BEIs®)
2021 NOTICE OF INTENDED CHANGES (NIC)
Cyclohexane

2021 ADOPTIONS
Aniline
Chromium
Indium
Methemoglobin Inducers
Methyl Chloroform
Nickel and Inorganic Compounds

2021 UNDER STUDY LIST
Chemical Substances
Acrylamide
Acrylinitril
Adipates
Arsenic
Atrazine
Benzene
Bisphenol A
Butadiene
Copper
3,3ʹ-Dichlorobenzidine
Diethylhexyl adipate
Di(2-ethylhexyl)phthalate (DEHP)
Dimethylacetamide
Ethoxyethanol
Ethylene glycol
Ethylene glycol dinitrate
Furfural
Heptane
Iodine
Methylcyclohexane
Nicotine
Nitrobenzene
Phthalates (see DEHP)
Platinum
Styrene
Styrene oxide

Other Issues Under Study

  1. Sq Notation
  2. Introduction to the Documentation of the BEIs

Feasibility Assessments
Acrylonitrile
Alachlor
Aluminum
Antimony
Beryllium
1-Bromopropane
Chlorpyrifos
1,4-Dichlorobenzene
2,4-Dichlorophenoxy acetic acid
Diethanolamine
2-Ethyl hexanoic acid
Hydrazines
Inorganic borates
Manganese
Methyl tert-butyl ether
Methyl n-butyl ketone
Methylcyclohexane
Methyl formate
Methyl isobutyl carbinol
a-Methylstyrene
Nitrobenzene
Perfluorooctanoic acid
Selenium
Thallium
Trimethylbenzene
Vanadium pentoxide
Vinyl chloride