Substances and Agents Listing

ACGIH® Board Ratifies 2024 TLVs® and BEIs®

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CHEMICAL SUBSTANCES TLVs®

2024 NOTICE OF INTENDED CHANGES (NIC)
Acrolein
Desflurane
Difluorodibromomethane
Dimethenamid-P
Endotoxins
Imidacloprid
Isopropyl ether
Nitric acid
Parathion
Propionitrile
Trimetacresyl phosphate
Trimethylolpropane
Triparacresyl phosphate

2024 ADOPTIONS
Benzene
Captafol
Diacetyl
Epichlorohydrin
Ethylene glycol dimethyl ether
Fenoxycarb
Fentanyl and Fentanyl Citrate, as Fentanyl
Hexane (Commercial, <54% n-Hexane) and Branched Hexane Isomers
Methylcyclohexane
Pentaborane
Phthalic anhydride

2024 UNDER STUDY LIST
Chemical Substances
Bifenazate
1-Bromo-3-chloropropane
Carbon monoxide
Cinnamaldehyde
Copper
Copper naphthlenate
Dicamba
Diethyltoluamide (DEET)
Dimethyl carbamoyl chloride
Enflurane
Fluorides
Lead and inorganic compounds, as Pb
Malathion
Mesityl oxide
4, 4′-Methylene bis(2-chloroaniline)
2-Methylimidazole
Metribuzin
Molybdenum
Nicotine
Nitroglycerin
Phosphorus
Propylene dichloride (1,2-Dichloropropane)

Sodium silicates
Subtilisins
Thorium dioxide
Trichloronaphthalene
1,2,3-Trichloropropane
Triclopyr
Triethanolamine
Triethylene glycol
Trimellitic anhydride
Vinylidene chloride
Vinylidene fluoride

PHYSICAL AGENTS TLVs®
2024 NOTICE OF INTENDED CHANGES (NIC)
Push/Pull

2024 ADOPTIONS
Above shoulder work
Infrasound and low-frequency sound
Ionizing radiation
Ultraviolet radiation
Whole-body vibration

2024 UNDER STUDY LIST

Electromagnetic Fields

Ergonomics

  • Hand-Arm Vibration

Other Issues Under Study

  • Fatigue and its Management in the Workplace
  • Generalized Fatigue and Work Schedules
  • Hyperbaric Pressure
  • Hypobaric Pressure
  • Introduction to the Physical Agents

BIOLOGICAL EXPOSURE INDICES (BEIs®)
2024 NOTICE OF INTENDED CHANGES (NIC)
Platinum

2024 ADOPTIONS
Di (2-ethylhexyl) phthalate
Ethyl benzene

2024 UNDER STUDY LIST
Chemical Substances
1,3-Butadiene
Antimony
Atrazine
Benzene
Bisphenol-A
Copper
Dibutyl phthalate
Glyphosate
Heptane
Methyl ethyl ketone
Nicotine
Trimethylbenzene

Feasibility Assessments
Formic Acid
Adipates