Appearance and OdorDeep blue fine crystals with a faint reddish hue.EMERGENCY OVERVIEW - IMMEDIATE HAZARDCAUTION! MAY BE HARMFUL IF SWALLOWED OR INHALED. MAY CAUSE IRRITATION TO SKIN AND EYES. THE TOXICOLOGICAL PROPERTIES OF THIS SUBSTANCE HAVE NOT BEEN FULLY INVESTIGATED.EMERGENCY OVERVIEW - CHRONIC HAZARD WARNINGINFORMATION ON THE HUMAN HEALTH EFFECTS FROM EXPOSURE TO THIS SUBSTANCE IS LIMITED.