1. Scope This standard applies to the food additives tea tree oil (also known as the leaf white Melaleuca) made from leaves and shoots of the Melaleuca alternifolia. 2. Technical requirements 2.1 Sensory requirements Color:Colorless to light yellow State:Transparent liquid Aroma:Characteristic aroma 2.2 Physical and chemical indicators Relative density :0.885 0.906 Refractive index :1.475 1.482 Optical rotation :+115° Uses: 1, The tea tree oil can be used in personal care products (hair care, body care, foot bath, soap, antibacterial hand sanitizer, breath freshener and oral care supplies) and health supplies, (emergency lotion, fungicide, burns care, Anti-fungal, anti-mildew); has the effects of anti-inflammatory, antibacterial, antipruritic; it has entered the US Food, Drug Administration "FDA" procurement list. 2, It has been used and has the potential use in the following products: agricultural fungicides, health disinfectants, preservatives, air fresheners, air conditioning fungicides, anti-acne (acne) cleaning cream, cleaning agents for cream, water, and bathing, car cleansers, carpet deodorants, fresheners, tableware cleansers, face, body, foot cleaners, fresheners, moisturizers, deodorants, shampoos, pet hygiene products and so on. 3, In the food field: the use of tea tree oil as a food spice has long been approved by the United States, FEMA number 3902. The average use depth in baked goods, soft drinks, alcoholic beverages, cereals, cheeses, chewing gum, candy, egg products, fish products, fats, frozen dairy products, fruit products, instant coffee, tea, meat products, dairy products, nuts products, the food products or the like is 10 ppm, and the maximum average concentration is 30 to 50 ppm. 4,In the beauty industry: to completely remove the excess oil secretion; adjust the water and oil balance; help eliminate acne, prevent acne and accelerate recovery. It provides water for the skin and at the same time strengthen the fine repair capacity to promote skin smoothness, making pores more healthy and meticulous.