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Hydrogen Chloride

Acute REL (μg/m3)
2100
Species
Human
Acute REL Toxicologic Endpoint
Respiratory and eye irritation
Acute REL Target Organs
Respiratory system, eyes
Chronic Inhalation REL (μg/m3)
9
Chronic Target Organs
Respiratory system
Human Data
No
Last Chronic REL Revision
2000
Severity
Mild
Last Acute REL Revision
1999

Hydrogen Fluoride

Acute REL (μg/m3)
240
Species
Human
Acute REL Toxicologic Endpoint
Respiratory and eye irritation
Acute REL Target Organs
Respiratory system, eyes
Chronic Inhalation REL (μg/m3)
14 (inhalation); 40 μg/kg BW-day (oral)
Chronic Target Organs
Inhalation: Bone and teeth, respiratory system. Oral: Bone and teeth
Human Data
Yes
Last Chronic REL Revision
2003
Chronic Reference Exposure Levels Comments

OEHHA 2008. Technical Supporting Document for Noncancer RELs, Appendix D3. Listed in Hot Spots as Fluorides including hydrogen fluoride, with separate RELs for Hydrogen Fluoride.

Acute Reference Exposure Levels Comments

OEHHA 2008. Technical Supporting Document for Noncancer RELs, Appendix D2. Listed in Hot Spots as Fluorides including hydrogen fluoride, with separate RELs for Hydrogen Fluoride.

Severity
Mild
Last Acute REL Revision
1999

Mercury (Inorganic)

Acute REL (μg/m3)
0.6
Species
Rat
Acute REL Toxicologic Endpoint
Reproductive/ development (central nervous system disturbances)
Acute REL Target Organs
Reproductive/ development
8-Hour Inhalation REL (μg/m3)
0.06
Last 8-Hour REL Revision
2008
Chronic Inhalation REL (μg/m3)
0.03 (inhalation); 0.16 μg/kg BW-day (oral)
Chronic Target Organs
Inhalation and oral: Nervous system, kidney, development
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
Severe
Last Acute REL Revision
2008

Ammonia

Acute REL (μg/m3)
3200
Species
Human
Acute REL Toxicologic Endpoint
Respiratory and eye irritation
Acute REL Target Organs
Respiratory system; eyes
Chronic Inhalation REL (μg/m3)
200
Chronic Target Organs
Respiratory system
Human Data
Yes
Last Chronic REL Revision
2000
Severity
Mild
Last Acute REL Revision
1999