Description

Butyric Anhydride is a versatile organic acid anhydride with the CAS number 106-31-0, serving as a key reagent for introducing the butyryl group. It matters for its high reactivity in acylation reactions, making it a fundamental building block for synthesizing various esters, amides, and other derivatives. Industries that need it include flavor and fragrance manufacturing, pharmaceutical intermediates, plasticizers, and agrochemical production.

Application

• Flavor and Fragrance Synthesis: A primary raw material for producing butyrate esters, such as ethyl butyrate, which are essential for creating fruity flavors (e.g., pineapple, apple) and fragrances.
• Pharmaceutical Intermediates: Used as an acylating agent in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs.
• Polymer and Plasticizer Production: Acts as a modifier or intermediate in the manufacture of cellulose acetate butyrate (CAB) plastics, resins, and specialty plasticizers.
• Agrochemicals: Employed in the synthesis of herbicides, pesticides, and plant growth regulators.
• Perfumery Fixatives: Serves in the production of compounds that stabilize and prolong the scent of perfumes.
• Chemical Research & Development: A valuable reagent in organic synthesis laboratories for acylation studies and novel compound development.

Basic Information

Product Name	Butyric Anhydride
CAS No.	106-31-0
Molecular Formula	C8H14O3
Molecular Weight	158.20 g/mol
Synonyms	Butanoic Anhydride; Butyryl Oxide; n-Butyric Anhydride; Butanoic Acid Anhydride; Butyric Acid Anhydride; Butanoyl Butanoate; Butyric Ether; Butanoic Acid, 1,1'-Anhydride
EINECS	203-383-4

Quality Control

Our Butyric Anhydride is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the demands of critical applications in flavors, fragrances, and pharmaceuticals. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Due to its hygroscopic and strong acid/organic solvent nature, it must be kept dry and separated from bases, oxidizing agents, and moisture. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Free Butyric Acid	≤ 1.0%
Refractive Index (20°C)	1.410 - 1.415
Density (20°C)	0.965 - 0.975 g/mL

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