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1,4-Dichlorobenzene

Acute REL (μg/m3)
8700
Species
Rat
Acute REL Toxicologic Endpoint
Development
8-Hour Inhalation REL (μg/m3)
5
Last 8-Hour REL Revision
2025
Chronic Inhalation REL (μg/m3)
10
Chronic Target Organs
Respiratory system, male reproductive system
Human Data
No
Last Chronic REL Revision
2025
Last Acute REL Revision
2025

Benzene

Acute REL (μg/m3)
27
Species
Mouse
Acute REL Toxicologic Endpoint
Reproductive/ development; aplastic anemia and acute myelogenous leukemia
Acute REL Target Organs
Reproductive/ development, immune system, hematologic system
8-Hour Inhalation REL (μg/m3)
3
Last 8-Hour REL Revision
2014
Chronic Inhalation REL (μg/m3)
3
Chronic Target Organs
Hematologic system, nervous system, development
Human Data
Yes
Last Chronic REL Revision
2014
Severity
Severe
Last Acute REL Revision
2014

Epichlorohydrin

Acute REL (μg/m3)
1300
Species
Human
Acute REL Toxicologic Endpoint
Respiratory and eye irritation
Acute REL Target Organs
Respiratory system, eyes
Chronic Inhalation REL (μg/m3)
3
Chronic Target Organs
Respiratory system, eyes
Human Data
No
Last Chronic REL Revision
2000
Severity
Mild
Last Acute REL Revision
1999

Manganese & Manganese Compounds

8-Hour Inhalation REL (μg/m3)
0.17
Last 8-Hour REL Revision
2008
Chronic Inhalation REL (μg/m3)
0.09
Chronic Target Organs
Nervous system
Human Data
Yes
Last Chronic REL Revision
2008
Chronic Reference Exposure Levels Comments
8-Hour Reference Exposure Levels Comments