We are offering chitin. cas no.: 1398-61-4 einecs: 215-744-3mf: c28h49n3o16mw: 683.6992density: 1.48gcm3 boiling point: 1114.5c at 760 mmhg flashing point: 627.8c appearance: white or slight yellow flaky matterusage: used in cosmetic flavorspacking: 25kgs drum.