Flavors and flavors are a large class of food additives. They generally refer to perfume monomers or mixtures for food aromas that meet national hygiene requirements. They are one of the most important raw material excipients for food production. Flavors and flavors are also natural and synthetic. The ingredients of the spices are relatively simple, such as orange oil, rose oil, lemon oil, etc., which are natural flavors and can be used as monomers in other applications or in combination with other flavors: ethyl acetate, vanillin, γ- decalactone, δ - Eleven lactone, ethyl maltol, etc. are artificial synthetic monomer fragrances. A fragrance consists of a mixture of one or more aromatic substances, solvents or food processing aids with a certain aroma characteristics and concentration. The composition of the essence is complex, few monomeric perfumes are composed, and dozens of dozens are even Hundreds of spices, such as orange flavor, yogurt flavor and so on. With the improvement of people's living standards, people's awareness of safety and health has gradually increased, and more and more attention has been paid to the word " natural " . In particular, in recent years, some illegal manufacturers have violated relevant laws and regulations in the production process, which has also caused people to worry about the safety of food additives. As a food flavor spices production enterprises, should be good "quality" to improve the stability and safety of the product quality, to provide safe, reliable, high-quality food flavors and fragrances, and now it has become increasingly important, Become one of the eternal goals pursued by the company.    Linalool (Linalool) is home fragrance and soap products most frequently used spices varieties flavor formulations, linalool is also an important chemical raw materials. There are also two optical isomers, left-handed and right-handed. Among the essential oils from different sources, racemates are present in scented sesame oil, jasmine oil, or synthetic linalool. Specific rotation +19.30 ; left-handed body is present in linden oil, sassafras oil, bergamot oil, lavender oil, rosewood oil (the total alcohol content is more than 82% according to linalool ), and the proportion of essential oils is 0.8622 . The boiling point is 198 °C, and the specific rotation is -20.10 . REPO-1 Total Sugar Refractive Optical Transducer , REPO-5 Tri-Scale Refractive Optical Rotator , both refractive index and optical rotation are used for industry-standard compliance verification. These data can help check the authenticity of raw materials and avoid adulteration. Or use inferior materials, can be quickly used for raw material inspection and rapid inspection of finished products.