Bureau of Indian Standards issues first ever License for “Acetic Anhydride” as per IS 1235:2023.

The Central Marks Department 2 (CMD 2) has granted the ‘All India First license’ for “Acetic Anhydride” as per IS 1235:2023 on 19/05/2025.

The All India First license has been granted as per the following details:

1. Branch Office : Mumbai Branch Office – II

2. Product : Acetic Anhydride

3. IS No. : 1235:2023

4. Licensee : M/s Laxmi Organic Industries Ltd.

5. License No. : 7800136816

6. Address : Plot No. B-1/1, B-2/2, 3/1/1 and 3/1/2, MIDC Industrial Area, MIDC Mahad, Mahad, Raigad, Maharashtra – 402302.

Acetic anhydride is a versatile chemical compound with a wide range of applications, particularly in the production of cellulose acetate and as a reagent in organic synthesis. Its dehydrating and acetylating properties make it a valuable tool in various industries, but it requires careful handling due to its corrosive and irritating nature.

Key Properties and Characteristics:

Formula : (CH₃CO)₂O or C₄H₆O₃

Melting Point : -73.1 °C

Boiling Point : 139.5 °C

Density : 1.08 g/cm³

Molar Mass : 102.09 g/mol

Appearance : Clear, colorless liquid with a pungent, vinegar-like odor

Solubility : Slightly soluble in water, but dissolves in common organic solvents

Flammability : Acetic anhydride is flammable

Uses and Applications:

• Production of Cellulose Acetate: A primary component in the production of cellulose acetate, used in textiles, plastics, and films.

• Reagent in Organic Synthesis: Used in various chemical reactions as a reagent to introduce acetyl groups, making it a key component in synthesizing pharmaceuticals, dyes, and other organic compounds.

• Specific Applications: Used in the production of aspirin, acetaminophen, and other pharmaceuticals.

• Dehydrating Agent: Its dehydrating properties are utilized in various industrial processes.

• Other Uses: Used in the manufacturing of explosives, perfumes, and other products.

Hazards and Considerations:

• Corrosive: Acetic anhydride is corrosive to metals and tissue.

• Eye and Skin Irritant: Contact with the eyes or skin can cause irritation and burns.

• Inhalation Hazard: Inhaling acetic anhydride vapors can cause respiratory irritation.

• Storage and Handling: Should be stored in a well-ventilated area, away from heat and ignition sources.  

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