IS 297:2001
Sodium sulphides for industrial processing
BIS QCO · ISI MARK · 1 LINES · SODIUM SULPHIDE QUALITY CONTROL ORDER, NOTIFIED VIDE S.O. 1894(E)
IS 297 specifies the requirements for technical-grade sodium sulphide, an inorganic sulphur compound used in the leather, dye intermediate and pulp-and-paper industries. The standard covers solid and flake forms supplied for industrial processing.
At a glance
1
Tariff lines covered (8-digit HSN)
Chapter 28
Primary HSN chapter
ISI
Mark scheme
Sodium Sulphide Quality Control Order, notified vide S.O. 1894(E)
Governing Quality Control Order
Tariff lines covered
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Speak to an Expert Last verified against gazette notifications: 2026-05-16. Source: BIS / Indian Customs CUSDATA.
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