... brown liquidPurity: 100% PurePlant Used: Stem&BarkMain Content: ≥98% Methyl SalicylateCAS: 8001-88-5Organic: YESExtraction Method: Steam DistillationOEM: ... main constituents of birch oil are Salicylic Acid, Methyl Salicylate, Betulene and Betulenol.Birch oil also named ... main components of birch oil are salicylic acid, methyl salicylate, betulene and betulenol.PrecautionsWhite birch oil is ...