... , Relative density2.1109, Melting Point 333°C. Use: Mainly for CRT glass bulbs, auto lights bulbs, glass clarifying agent. Used ... for crops and flowers of compound fertilizers, foliar fertilization. Used to ... a hair color agent; preservatives, such as for bacon, luncheon meat played a preservative.. Potassium nitrate for sale CAS NO#7757-79-1