What hazards does ClF3 pose and why shouldn't I work with it?

[mgb_phys]

I just came across this chemists blog with hilarious descriptions of stuff you really don't want to meet:

As an example, ClF3 which apparently can ignite wet sand - producing HF in the process !
http://pipeline.corante.com/archives/2008/02/26/sand_wont_save_you_this_time.php

 

[Borek]

Nice one. Err... interesting one.