hi, I am yuebingke at hn jyd chem factory we do thermochromic leuco dye chemicial for thermochromic items( x ray film, powder, ink , paint ) . hope get your connection if it is useful for your company . thanks very much. leuco dye apperance is white crystal . it cannt forms the color directly. frst they need en-micocapsulated need work with some acide solvent to forms color or color less. our chemical leuco dye mostly used in some factory industries who have microcapsulate machine and coating machine such as the x ray film , cpt plate mills . V-1 CAS RN 50293-29-3 color former VIOLET JYDR-2 CAS RN 50292-91-6 color former RED JYDGN-1 CAS RN 132467-74-4 color former GREEN JYDO-1 CAS RN 21934-68-9 color former ORANGE JYDB-6 CAS RN 75805-17-3 color former BLUE JYDB-5 CAS RN 98660-18-5 color former BLUE JYDB-1 CAS RN 69898-40-4 color former BLUE JYDR-7 CAS RN 21121-62-0 color former RED JYDR-4 CAS RN 26567-23-7 color former RED JYDR-3 CAS RN 50292-95-0 color former RED JYDR-1 CAS RN 26628-47-7 color former RED
