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K. Dermal Toxicity data is summarized in the following three categories: <br /> Skin penetration <br /> A - negligible penetration (solid-polar) <br /> B - slight penetration (solid-nonpolar) <br /> C - moderate penetration(liquid-nonpolar) <br /> D - high penetration (gas/liquid-nonpolar) <br /> Systemic Potency <br /> E - slight hazard - LD50 = 500-15,000 mg/kg <br /> lethal dose for 70 kg man = 1 pint-1 quart <br /> F - moderate hazard - LD50 = 50-500 mg/kg <br /> lethal dose fcr 70 kg man = 1 ounce-1 pint <br /> G - extreme hazard - LD50 = 10-50 mg/kg <br /> lethal dose for 70 kg man = drops to 20 ml <br /> Local Potency <br /> H - slight- reddening of skin <br /> I - moderate - 1 r itation/inflammation of skin <br /> J - extreme - tissue destruction/necrosis <br /> L, Acute Exposure Symptoms <br /> A- abdominal pain <br /> B-central nervous system depression <br /> C - comatose <br /> D -convulsions <br /> E-confusion <br /> F-dizziness <br /> G -diarrhea <br /> H - drowsiness <br /> I - eye irritation <br /> J-faver <br /> K- headache <br /> L- nausea <br /> M - respiratory system irritation <br /> iy -skin irritation <br /> O -tremors <br /> P - unconsciousness <br /> Q -vomiting <br /> R -weakness <br />