Notice of Intended Changes List

2025 Notice of Intended Changes List (NICs)

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CHEMICAL SUBSTANCES TLVs®
2025 NOTICE OF INTENDED CHANGES (NIC)
Appendix A
Carbon monoxide (comment period closed)
Copper naphthenate
Malathion
Molybdenum and compounds
Nicotine
Nitric acid (comment period closed)
Propargyl alcohol

PHYSICAL AGENTS TLVs®
2025 NOTICE OF INTENDED CHANGES (NIC) 
None

BIOLOGICAL EXPOSURE INDICES (BEIs®)
2025 NOTICE OF INTENDED CHANGES (NIC) 
n-Heptane
Nicotine