【Chemical Name】 Crotonic acid
【Synonym】 TRANS-2-BUTENOIC ACID;TRANS-CROTONIC ACID;(2E)-2-Butenoic acid;(e)-2-butenoicaci;(E)-CH3CH=CHCOOH;(E)-Crotonic acid;(e)-crotonicaci;(e)-crotonicacid
【CAS No】 107-93-7
【Molecular Formula】 C4H6O2
【Molecular Weight】 86.09
【Properties】 Melting point 70-72 °C (lit.)Boiling point 180-181 °C (lit.)
Bulk density 543kg/m3Density1.027 g/mL at 25 °C (lit.)
【Specification】≥99
【Packing】25kg/drum
【Usage】
Crotonic acid is an unsaturated fatty acid. Its molecule contains double bonds and carboxyl groups, thus having strong reactivity. It has various uses in industry, mainly for the preparation of various resins, fungicides, surface coatings, plasticizers and pharmaceuticals. Its most important use is as a raw material for polyvinyl acetate coatings. In addition, vinyl acetate-crotonic acid copolymers can be used as hot-melt adhesives for book binding, as well as coatings for wallpaper, adhesives for paper and laminates, and components of film developers and electrostatic copying fluids. Crotonic acid series products: Crotonamide: obtained by the reaction of crotonic acid or its acyl chloride with ammonia. Crotonanilide: prepared by the reaction of crotonyl chloride or crotonic anhydride with aniline, and used in insecticides. Crotonic anhydride: obtained by the reaction of crotonyl chloride with sodium crotonate, and can also be formed by the reaction of crotonic acid with acetic anhydride or ketene, used in the preparation of crotonic acid cellulose and its derivatives. Crotonyl chloride: obtained by the action of crotonic acid with carbon trichloride, phosphorus pentachloride, benzoyl chloride or thionyl chloride, etc., used in the preparation of crotonic acid esters and their derivatives. Important crotonic acid esters include methyl crotonate, ethyl crotonate, n-butyl crotonate, vinyl crotonate, and allyl crotonate. The amyl ester, geranyl ester, 2-methylallyl ester and 2-ethylhexyl ester of crotonic acid are all used in perfumes, and their benzyl ester, cyanomethyl ester and trimethylene glycol ester are insecticides. Peroxycrotonic acid is a catalyst for the polymerization of vinyl chloride and vinylidene chloride. Crotonic acid is also used as a softener for synthetic rubber.
【Introduction】
Crotonic acid is a versatile chemical compound widely used in various industries for its diverse applications. It is commonly utilized in the production of synthetic resins, plasticizers, and pharmaceuticals. Its unique properties make it an essential ingredient in the manufacturing of synthetic rubber softeners, fungicides, surface coatings, and plasticizers.
In the field of synthetic resins, crotonic acid plays a crucial role in enhancing the durability and flexibility of the final product. It helps in improving the adhesive properties and overall performance of the resin, making it suitable for a wide range of applications. Additionally, crotonic acid is used as a plasticizer to increase the flexibility and workability of plastics, making them more malleable and easier to mold.
In the pharmaceutical industry, crotonic acid is utilized in the synthesis of various drugs and medications. Its chemical properties make it an ideal ingredient for formulating pharmaceutical products with specific characteristics and functionalities. Moreover, crotonic acid is also used as a synthetic rubber softener, providing the necessary flexibility and elasticity to rubber products.
Furthermore, crotonic acid is employed in the production of fungicides to protect crops and plants from harmful fungal infections. Its antifungal properties make it an effective and reliable solution for controlling fungal growth and preserving the health of agricultural crops. Additionally, crotonic acid is utilized in surface coatings to enhance the durability and resistance of various materials against environmental factors.
Overall, crotonic acid is a versatile and indispensable chemical compound with a wide range of applications in different industries. Its unique features and properties make it a valuable ingredient in the production of various products, from synthetic resins and plasticizers to pharmaceuticals and fungicides.