The Bureau of Indian Standards (BIS) on April 20, 2023, notified the date of establishment and withdrawals of Acetic Acid, Maleic Anhydride, and Phthalic Anhydride.
The Indian standards will be established on April 13, 2023, and the date of withdrawal will be July 12, 2023:
• IS 695: 2020 Acetic Acid — Specification (Fourth Revision)
• IS 5149: 2020 Specification for Maleic Anhydride, Technical (Second Revision)
• IS 5158: 1987 Specification for Phthalic Anhydride, Technical (Second Revision)
[Notification no. HQ-PUB014/1/2020-PUB-BIS (560)]