2023 Notice of Intended Changes List (NICs)

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CHEMICAL SUBSTANCES TLVs^®
2023 NOTICE OF INTENDED CHANGES (NIC)

Benzene (Updated 7-1-2023)
Captafol (Added 7-1-2023)
Diacetyl (Added 7-1-2023)
Dimethenamid-P
Endotoxins
Epichlorohydrin (Added 7-1-2023)
Ethylene glycol dimethyl ether
Fenoxycarb (Added 7-1-2023)
Fentanyl and Fentanyl Citrate (Added 7-1-2023)
Hexane (Commercial, < 54%) and Hexane Isomers, Other Than n-Hexane (Added 7-1-2023)
Methylcyclohexane (Added 7-1-2023)
Nitric acid
Pentaborane (Added 7-1-2023)
Phthalic Anhydride (Added 7-1-2023)
Trimetacresyl phosphate
Triparacresyl phosphate

PHYSICAL AGENTS TLVs^®
2023 NOTICE OF INTENDED CHANGES (NIC) 
Infrasound and low-frequency sound
Whole-body vibration

2023 Notice of Intent to Establish (NIE)
Above shoulder work

BIOLOGICAL EXPOSURE INDICES (BEIs^®)
2023 NOTICE OF INTENDED CHANGES (NIC) 

Di(2-ethylhexyl) phthalate (Added 7-1-2023)
Platinum