%1

Carbon Tetrachloride

Acute REL (μg/m3)
1900
Species
Rat
Acute REL Toxicologic Endpoint
Reproductive/ development; hepatoxicity; headaches, nausea, vomiting
Acute REL Target Organs
Reproductive/ developmental, alimentary system (liver), nervous system
Chronic Inhalation REL (μg/m3)
40
Chronic Target Organs
Alimentary system (liver), development, nervous system
Human Data
No
Last Chronic REL Revision
2000
Severity
Severe
Last Acute REL Revision
1999

Hydrogen Sulfide

Acute REL (μg/m3)
42
Species
Human
Acute REL Toxicologic Endpoint
Headache, nausea, physiological responses to odor
Acute REL Target Organs
central nervous system
Chronic Inhalation REL (μg/m3)
10
Chronic Target Organs
Respiratory system
Human Data
No
Last Chronic REL Revision
2000
Severity
Mild
Last Acute REL Revision
1999

Formaldehyde

Acute REL (μg/m3)
55
Species
Human
Acute REL Toxicologic Endpoint
Eye irritation
Acute REL Target Organs
Eyes
8-Hour Inhalation REL (μg/m3)
9
Last 8-Hour REL Revision
2008
Chronic Inhalation REL (μg/m3)
9
Chronic Target Organs
Respiratory system
Human Data
Yes
Last Chronic REL Revision
2008
Chronic Reference Exposure Levels Comments
8-Hour Reference Exposure Levels Comments
Acute Reference Exposure Levels Comments
Severity
Mild
Last Acute REL Revision
2008

Chlorine

Acute REL (μg/m3)
210
Species
Human
Acute REL Toxicologic Endpoint
Respiratory and eye irritation
Acute REL Target Organs
Respiratory system, eyes
Chronic Inhalation REL (μg/m3)
0.2
Chronic Target Organs
Respiratory system
Human Data
No
Last Chronic REL Revision
2000
Severity
Mild
Last Acute REL Revision
1999

Chloropicrin

Acute REL (μg/m3)
29
Species
Mouse
Acute REL Toxicologic Endpoint
Respiratory and eye irritation
Acute REL Target Organs
Respiratory system, eyes
Chronic Inhalation REL (μg/m3)
0.4
Chronic Target Organs
Respiratory system
Human Data
No
Last Chronic REL Revision
2001
Severity
Mild
Last Acute REL Revision
1999

Selenium

Chronic Inhalation REL (μg/m3)
20 (inhalation); 5 μg/kg BW-day (oral)
Chronic Target Organs
Inhalation and oral: Alimentary system (liver), cardiovascular system, nervous system
Human Data
Yes
Last Chronic REL Revision
2001
Chronic Reference Exposure Levels Comments

OEHHA 2008. Technical Supporting Document for Noncancer RELs, Appendix D3. Listing is for Selenium and selenium compounds (other than hydrogen selenide). REL for hydrogen selenide listed separately.