English name : 4-Bromocinnamic acid Other names: 3-(4-Bromophenyl)acryic acid; Bromocinnamic acid,4-; P-Bromocinnamic acid; 4-Bromocinnamic acid; predominantly trans CAS No.: 1200-07-3 Molecular formula: C9H7BrO2 Molecular weight: 227.057 g/mol Molar mass: Melting point: 260-265 °C Boiling point: 310.5±17.0 °C at 760 mmHg Flash point: 114.5±8.3 °C Refractive index:1.612 Properties :white crystalline powder Purity : 98 percent Packaging: kept sealed Storage method: stored at -20°C with a cool, dry place, ensuring good ventilation or exhaust in the workshop and keep away from incompatible substances such as oxidizing agents Usage : It is usually used as the raw material to make the aroma of the main spice more aromatic and volatile. The anti - mildew and antiseptic sterilization of cinnamic acid can be used to preserve freshness and antisepsis in grain, vegetable and fruit. It has no toxic and side effects on human body. Cinnamic acid is an effective inhibitor of A-5491 human lung adenocarcinoma cells. In the agricultural industry, cinnamic acid is used as growth promoter and long-term fungicide for antisepsis of fruits and vegetables. Cinnamic acid can be used in beauty. It is one of the essential ingredients in advanced sunscreens and its significant antioxidant effect has good effect on slowing down wrinkle. 4-Bromocinnamic acid, a kind of cinnamic acid, also has this effects.