Process Chemicals Co. Manufactures Iodoform NF in Yellow Crystalline Color. Process Chemicals Co. Has been awarded ISO 9001:2000 certifications. Iodoform NF in Yellow Crystalline Color has been available powder with a peculiar and a very penetrating persistent odor. Iodoform NF in Yellow Crystalline Color is practically insoluble in water. This chemical is used as topical anti- infective. The molecular weight of this chemical is 393.73 and molecular formula is CHI3. It`s CAS no. Is 75-47-8 and appears in yellow crystalline color.