313c suggests that although not listed by name and CAS number, this chemical is reportable below one or more of your EPCRA segment 313 chemical groups. Hydrolysis (the interaction with water) causes the wet solid to release trace quantities of hydrogen cyanide. A normal description of the smell of hydrogen https://cyanide-potassium-sodium59258.blogs-service.com/61087987/the-2-minute-rule-for-potassium-cyanide-picture