OEHHA Air Chronic Reference Exposure Levels Adopted by OEHHA December 2001

Chronic Reference Exposure Levels Adopted by OEHHA December 2001

Air Toxicology and Epidemiology

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Substance (CAS #)	Listed in CAPCOA (1993)	Chronic Inhalation REL>(µg/m3)	Hazard Index Target(s)	Human Data
Acrylonitrile (107-13-1)	X<	>5	Respiratory system
Beryllium (7440-41-7) and beryllium compounds	X	>0.007	Respiratory system; immune system	X
Chloropicrin (76-06-2)	X	>0.4	Respiratory system
Diethanolamine (111-42-2)		>3	Cardiovascular system; nervous system
Ethylene dibromide (106-93-4)	X	>0.8	Reproductive system	X
Isophorone (78-59-1)		>2000	Development; liver
Maleic anhydride (108-31-6)	X	>0.7	Respiratorysystem
Methyl isocyanate (624-83-9)		>1	Respiratory system; reproductive system
Methylene dianiline (4,4’-) (101-77-9)	X	>20	Eyes; alimentary system (hepatotoxicity)
Selenium and selenium compounds (other than hydrogen selenide)	X	>20	Alimentary system; cardiovascular system; nervous system	X
Sulfuric acid (7664-93-9)		>1	Respiratory system
Vinyl acetate (108-05-4)		>200	Respiratory system

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