(kwik(II)sulfide) 
C.I. Pigment Red 106
Cas. Nr.: 1344-48-5  EINECS-Nr: 215-696-3

History and application:
Ancient
Distilled from mercury ore. Clear, flame red.
Can be used in oil, casein, glue, and lime paints and alcohol varnish. Good coverage.

Related to harm reduction this product it is not orderable outdoor Netherlands.