Search result for: selenium*

Table showing details for selenium*

Chemical	Category & User Codes	DG Class	DG PG	UN CAS No	Guidance notes
selenium*  . . . powder	Tch 1 2 - - 5 - -	6.1 DHS CW   Hazardous Chemical	III	2658 7782-49-2	Highly toxic by all routes of exposure. Avoid inhaling or contacting fine particles with skin. Recommend use of exhibition specimen in a sealed container for observation by students Years 7-12. When testing properties use in a fume cupboard if practicable, otherwise use small quantities in a well-ventilated area. Use eye and skin protection when splashes are possible. Reacts with water to form selenious acid. Do not heat or burn, due to the possibility of fine toxic particles being generated. 38 See also metal powders and reductants.