HS Code for Acetic anhydride

Acetic anhydride, with the chemical formula (CH3CO)2O, is an organic compound classified under HS code 291524. This code is found within Chapter 29 of the Harmonized System, which encompasses organic chemicals. Specifically, heading 2915 is dedicated to saturated acyclic monocarboxylic acids and their derivatives. The subheading 291524 precisely identifies "acetic anhydride," recognizing its unique chemical structure as an acid anhydride formed by the dehydration of two acetic acid molecules. Its distinct reactivity, particularly as a potent acetylating agent, and its specific chemical identity are the primary factors determining this dedicated classification, separating it from the parent acid, its salts, or its esters.

Products Included

• Pure acetic anhydride
• Acetic anhydride in various industrial grades
• Laboratory-grade acetic anhydride

Common Misclassification

Acetic anhydride (291524) is often confused with acetic acid or its other derivatives. HS code 291521 is for "Acetic acid," which is the parent carboxylic acid. Acetic anhydride is a distinct compound formed from acetic acid but possesses different chemical properties and reactivity, particularly its strong acetylating capability. Another common misclassification involves HS code 291539, which covers "Esters of acetic acid n.e.c. in item no. 2915.3." Esters are formed from an acid and an alcohol, whereas anhydrides are formed from two acid molecules with the loss of water. These are fundamentally different chemical classes and require distinct HS classifications. Accurate identification of the functional group is crucial.

FAQ

What is the HS code for Acetic anhydride?

The HS code for Acetic anhydride is 291524. This code specifically designates acetic anhydride as a distinct organic chemical within the broader category of saturated acyclic monocarboxylic acids and their derivatives, reflecting its unique chemical structure and properties.

What are the main industrial uses of Acetic anhydride?

Acetic anhydride is a critical industrial chemical with several significant applications. Its primary use is in the production of cellulose acetate, which is vital for manufacturing photographic films, textile fibers, and cigarette filters. It is also a key reagent in the synthesis of pharmaceuticals, notably aspirin (acetylsalicylic acid), and various other organic compounds. Furthermore, it serves as a dehydrating agent and a powerful acetylating agent in numerous organic synthesis processes.