IS 5158:1987
Phthalic anhydride, an aromatic dicarboxylic acid anhydride
BIS QCO · ISI MARK · 1 LINES · CONTROLLING QUALITY CONTROL ORDER NOTIFIED VIDE S.O. 5434(E)
IS 5158 is the Indian Standard governing phthalic anhydride, covering 1 tariff item under HSN Chapter 29. Compliance is mandatory under the ISI Mark Scheme and the controlling Quality Control Order notified vide S.O. 5434(E).
At a glance
1
Tariff lines covered (8-digit HSN)
Chapter 29
Primary HSN chapter
ISI
Mark scheme
controlling Quality Control Order notified vide S.O. 5434(E)
Governing Quality Control Order
Tariff lines covered
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Speak to an Expert Last verified against gazette notifications: 2026-05-20. Source: BIS / Indian Customs CUSDATA.
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