Substances and Agents Listing

ACGIH® Board Ratifies 2024 TLVs® and BEIs®

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CHEMICAL SUBSTANCES TLVs®

2024 NOTICE OF INTENDED CHANGES (NIC)
Carbon monoxide
Diacetone alcohol
Dimethenamid-P
Enflurane
Heptane, straight and branched isomers
Mesityl oxide
Methyl n-amyl ketone
Metribuzin
Nitric acid
Triethylene glycol

2024 ADOPTIONS
Acrolein
Desflurane
Difluorodibromomethane
Endotoxins
Imidacloprid
Isopropyl ether
Parathion
Propionitrile
Trimetacresyl phosphate
Trimethylolpropane
Triparacresyl phosphate

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

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

PHYSICAL AGENTS TLVs®
2024 NOTICE OF INTENDED CHANGES (NIC)
(none)

2024 ADOPTIONS
Push-Pull

2024 UNDER STUDY LIST

Electromagnetic Fields

Ergonomics

  • Hand-Arm Vibration

Other Issues Under Study

Above Shoulder Work User Guide
Cold Stress User Guide
Fatigue and its Management in the Workplace
Generalized Fatigue and Work Schedules
Heat Stress and Strain User Guide
Hyperbaric Pressure
Hypobaric Pressure
Laser User Guide
Push-Pull User Guide
TLV-PA front matter
Whole-Body Vibration User Guide

BIOLOGICAL EXPOSURE INDICES (BEIs®)
2024 NOTICE OF INTENDED CHANGES (NIC)
(none)

2024 ADOPTIONS
Platinum

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