Description

Acetoacetic Acid n-Butyl Ester is a versatile organic ester widely used as a key chemical intermediate. Its primary value lies in its reactive methylene group, making it an essential building block for synthesizing a wide range of heterocyclic compounds, pharmaceuticals, and agrochemicals. This product is particularly needed by manufacturers in the pharmaceutical, agrochemical, and fine chemical industries for producing active ingredients and complex molecules.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of various active pharmaceutical ingredients (APIs), including heterocyclic compounds like pyrazoles and pyrimidines.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and fungicides, where it serves as a core building block for active molecules.
• Fine Chemical Production: Employed in the manufacture of dyes, pigments, and other specialty chemicals requiring acetoacetate chemistry.
• Polymer Modifier: Acts as a co-monomer or cross-linking agent in specific polymer formulations to alter properties like flexibility or reactivity.
• Flavor and Fragrance Ingredient: Used in the synthesis of certain esters that contribute to fruity flavor and aroma profiles.
• Chemical Research & Development: A valuable reagent in organic synthesis laboratories for developing new chemical entities and methodologies.

Basic Information

Product Name	Acetoacetic Acid n-Butyl Ester
CAS No.	591-60-6
Molecular Formula	C8H14O3
Molecular Weight	158.20 g/mol
Synonyms	Butyl Acetoacetate; n-Butyl Acetoacetate; 3-Oxobutanoic Acid Butyl Ester; Acetoacetic Acid Butyl Ester; Butyl 3-Oxobutanoate; AAAE; BAA; Ethylacetoacetate butyl ester (related)
EINECS	209-722-2

Quality Control

Our Acetoacetic Acid n-Butyl Ester is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for sensitive synthesis applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to minimize moisture absorption and volatilization.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.418 - 1.422
Density (20°C)	0.97 - 1.00 g/mL

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.