Initial Medical Exam: A complete history & physical exam: ... Exam of blood, nervous system, GI system, & cardiovascular system should be stressed. Skin should be exam for evidence of chronic disorders. ... A complete blood count should be performed, including red cell count, a white cell count, a differential count of stained smear, as well as hemoglobin & hematocrit. Periodic Medical Exam: The ... /initial med exam/ should be repeated on an annual basis. Methemoglobin determinations should be performed if overexposure is suspected or signs & symptoms of toxicity occur. /Nitrotoluene/
... The onset of symptoms of methemoglobinemia is insidious and may be delayed up to 4 hours; headache is commonly the first symptom and may become quite intense as the severity of methemoglobinemia progresses. ... Cyanosis develops early in the course of intoxication, first the lips, the nose, and the ear lobes, and is usually recognized by fellow workers ... Until the methemeglobinemia concentration approaches approximately 40%, the individual usually feels well, has no complaints, and will insist that nothing is wrong. ... Over 40% ... weakness and dizziness; at up to 70% ... there may be ataxia, dyspnea on mild exertion, tachycardia, nausea, vomiting, and drowsiness. /Nitrotoluene/
THE COMPARATIVE TOXICITY OF 2-CHLORO-4-NITROTOLUENE (CNT) WAS INVESTIGATED IN STARLINGS, CHICKENS AND RATS. ADULT STARLINGS, 4-WK OLD NEW HAMPSHIRE CHICKENS & MALE SPRAGUE DAWLEY RATS WERE GAVAGED WITH DIFFERENT DOSES OF CNT SUSPENDED IN 2.5% CARBOXYMETHYL CELLULOSE. STARLINGS WERE FOUND TO BE EXTREMELY RESISTANT TO CNT TOXICITY, NO MORTALITY WAS OBSERVED AT THE 4000 MG/KG DOSE. THE APPROXIMATE LD50 DOSE OF CNT IN CHICKENS WAS BETWEEN 100 & 500 MG/KG. THE LD50 DOSE IN RATS WAS 2520 MG/KG. SINCE THE AMINO DERIVATIVE OF THE RELATED CMPD, 3-CHLORO-P-TOLUIDINE, IS MORE TOXIC IN STARLINGS, CHICKENS AND RATS THAN ITS NITRO DERIVATIVE, IT THEN INDICATES THAT THE BASAL ACTIVITY OF NITRO-REDUCTASE IN THESE ANIMALS IS PROBABLY ONE OF THE IMPORTANT DETERMINANTS FOR CNT TOXICITY.
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