Highly toxic

If the material in two process alternatives is both flammable and highly toxic, then they can be compared on both bases separately. If the assessments of the relative flammability and toxicity are in conflict, then we can only resort to a safety index. 

CaH24N.,03P2,(Me2N)2P(0)0P(0)(NMe2)z. It is not highly toxic to insects when used as a contact insecticide, but is readily absorbed by the roots and leaves of plants and translocated in the sap, so that the plant becomes toxic to species feeding on it. 

CAUTION Alkyl fluorides are said to he highly toxic. Great care should be taken not to inhale the vapours. 

Pure acrylonitrile boils at 78°. Acrylonitrile vapour is highly toxic it should therefore be handled with due caution and all operations with it should be conducted in a fume cupboard provided with an efficient draught. Acrylonitrile forms an azeotropic mixture with water, b.p. 70-5° (12-5 per cent, water). The commercial product may contain tte polymer it should be redistilled before use and the fraction b.p. 76 -5-78° collected separately as a colourless liquid. 

Diazomethane. CA UTION. Diazomethane is highly toxic its pre paration should be carried out only in a fume cupboard (hood) provided with a powerful exhaust system. The use of a screen of safely glass is recommended. 

Elemental fluorine and the fluoride ion are highly toxic. The free element has a characteristic pungent odor, detectable in concentrations as low as 20 ppb, which is below the safe working level. The recommended maximum allowable concentration for a daily 8-hour time-weighted exposure is 1 ppm. 

Crystals of uranium nitrate are triboluminescent. Uranium salts have also been used for producing yellow "vaseline" glass and glazes. Uranium and its compounds are highly toxic, both from a chemical and radiological standpoint. 

CAUTION This compound is EXTREMELY EXPLOSIVE and HIGHLY TOXIC I am not exaggerating Do not, under ANY circumstances, allow the acid to heat above room temperature (bp 37C). Use latex gloves to handle, and dispose of small quantities using plenty of water followed by dilute baking soda/water. 

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