Ethyl acetoacetate, 99.5%, domestic 200kg/drum; Eastman 210kg/drum
Ethyl acetoacetate has a pleasant fruity odor, is miscible with common organic solvents, and is soluble in water. It is classified as a Class 3.2 flammable liquid, but Qitian claims this product is general cargo.
Content: 99.3%
Packaging: 200kg/drum.
Chinese name: Ethyl acetoacetate
English name: Ethyl Acetoacetate
Also known as: Ethyl 3-oxobutanoate
Chemical formula: C6H10O3
Molecular weight: 130.14
CAS registry number: 141-97-9
EINECS registry number: 205-516-1
Melting point: -39°C (keto form); -44°C (enol form)
Boiling point: 180.8°C (760 mm Hg)
Water solubility: Slightly soluble in water, soluble in organic solvents
Density: 1.0282 g/cm3
Appearance: Colorless liquid with a pleasant fruity aroma
Flash point: 84.4°C (closed cup)
2. Upstream raw materials and production processes
Upstream raw materials: Ethanol; Sodium ethoxide; Ethyl acetate; Diketene; Sulfuric acid.
The esterification of diketene with ethanol is currently the main method for industrial production in China. Diketene and anhydrous ethanol undergo esterification catalyzed by copper sulfate to obtain crude ethyl acetoacetate, which is then purified by vacuum distillation. Ethyl acetate self-condensation method: Ethyl acetate undergoes reaction and is finally purified to obtain the product (mainly used in laboratories).
3. Main uses and downstream products
Primarily used as a solvent in industry; in pesticides for synthesizing organophosphorus insecticides, fungicides, and herbicides. In food, used for flavoring apple, apricot, and other fruit essences; in pharmaceuticals for producing aminopyrine and vitamin B, among others; in dyes for film staining.
Downstream products: Used in organic synthesis to produce pyridine, cyclic ketones, etc.; in pharmaceuticals, triethyl and resorcinol cyclization yield 7-hydroxy-4-methylcoumarin (an intermediate for antiallergic drugs).
Ethyl acetoacetate cyclized with thiourea yields the antithyroid drug methylthiouracil.