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THALLIUM


 Thallium is a soft white heavy metal with lustrous color which on exposure to air form thallus oxide. The metal and its compound are highly toxic. Eg- Thallium acetate, thallium sulphate, Theses salts being soluble, colorless and tasteless.

 Sign and symptoms:-
 Symptoms may appear 12-36 hours from a toxic dose. They include abdomenal pain, vomiting and diarrhea. Neurological symptoms include peripheral neuritis, impaired vision, Ataxia and convulsions, loss of hair may precede.
Thallium poisoning should normally be suspended when there are gastrointestinal symptoms, polyneuritis and loss of hair from head, lateral 2/3 of the eyebrow and from axilla. And X-ray of the abdomen showing a high density of hepatic opacity is diagnostic.

 Fatal dose:- 1 gm
Fatal period:- 2 days to 2 weeks.

 Treatment:- 
 Stomach wash should be used.

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