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Information about the Air Toxics Partial Listing

 
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  • These tables are updated monthly

  • NS- not subject to OAC 252:100-41

  • NE- not established

  • MAAC- maximum ambient air concentration

  • For further information on toxic categories consult OAC 252:100-41

Toxics Categories

A

Substances of high toxicity, including suspect and confirmed human carcinogens. Highly toxic substances are substances with an acute toxicity of either

oral LD50 rat

less than or equal to 50mg/kg

inhalation LC50 rat 4-hr

less than or equal to 100ppm

dermal LD50 rabbit

less than or equal to 100mg/kg

B

Substances of moderate toxicity. Moderately toxic substances are substances which have been demonstrated to produce carcinogenic, mutagenic, or teratogenic action in a single animal species with little or no human evidence of carcinogenic, mutagenic, or teratogenic action, or those chemicals having an acute toxicity of either

oral LD50 rat

greater than 50mg/kg, but less than 500mg/kg

inhalation LC50 rat 4-hr

greater than 100ppm, but less than 1000ppm

dermal LD50 rabbit

greater than 100mg/kg, but less than 500mg/kg

C

Substances of low toxicity. Substances of low toxicity are substances which have been shown to produce low toxicity or irritation, or those chemicals having an acute toxicity of either

oral LD50 rat

greater than 500mg/kg, but less than 5000 mg/kg

inhalation LC50 rat 4-hr

greater than 1000ppm, but less than 10000 ppm

dermal LD50 rabbit

greater than 500mg/kg, but less than 3000 mg/kg

 

AIR TOXICS HELP

 

 

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