Sodium sulphides

Sodium sulphides for industrial processing

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 297

HSN 2830 10 00 (sodium sulphides) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 297:2001 (reaffirmed 2017) is mandatory under the ISI Mark Scheme by virtue of the Sodium Sulphide (Quality Control) Order, 2020, with effect from 16 December 2020. A mandatory additional-qualifiers requirement in import declarations under Central Board of Indirect Taxes and Customs Circular 23/2023-Cus applies as a separate customs-clearance overlay.

What this is

HSN code

2830 10 00

Chapter

28 · Inorganic chemicals; organic or inorganic compounds of precious metals

BIS QCO

Applicable · ISI Mark Scheme · CM/L required

Indian Standard

IS 297:2001 · effective 16-12-2020

Applicable Partner Government Agencies

BISBIS·Bureau of Indian Standards

Procedural directions for customs clearance are issued by: Central Board of Indirect Taxes and Customs.

Compliance steps

1
Source only from a Bureau of Indian Standards CM/L-licensed manufacturer holding a current licence against IS 297:2001 (reaffirmed 2017). Verify the supplier's CM/L number, licensed product scope (solid or flake form), and manufacturing facility on the BIS online register before placing the purchase order.
Sodium Sulphide (Quality Control) Order, 2020 · S.O. 1894(E) dated 16-06-2020 · IS 297:2001 reaffirmed 2017
2
Ensure each consignment bears the ISI mark and the supplier's CM/L number per Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. The standard mark must appear on the product or its immediate packaging.
Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · Sodium Sulphide (Quality Control) Order, 2020
3
Include mandatory additional qualifiers in the import declaration for Chapter 28 commodities as required under paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus. This requirement applies with effect from 15 October 2023 and is independent of the BIS QCO obligation.
CBIC Circular 23/2023-Cus dated 30-09-2023 · General Note 2 of the ITC (HS) Import Policy
4
Quote the supplier's BIS CM/L number on the bill of entry and ensure the ISI-marked goods match the licensed scope. Customs verifies the CM/L in real time against the BIS register; an absent, expired, or scope-mismatched licence triggers consignment detention.
Sodium Sulphide (Quality Control) Order, 2020 · S.O. 1894(E) · BIS Act, 2016 · Customs Act, 1962

A word of counsel

The single most common error on this tariff line is confusion between the QCO publication date and the operative enforcement date for importers. The Sodium Sulphide (Quality Control) Order, 2020 was published on 16 June 2020 (S.O. 1894(E)), but the with-effect-from date binding on importers is 16 December 2020, as stated in the CCR. Importers who rely on the gazette publication date alone when computing compliance timelines — or who carry documentation referencing the wrong date — face scrutiny at customs on the question of whether the ISI-marked requirement was in force at the time of dispatch.

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Frequently asked

Does HSN 2830 10 00 require BIS certification?

Yes. Conformity to IS 297:2001 (reaffirmed 2017) is mandatory under the ISI Mark Scheme; imports are permitted only from manufacturers holding a current BIS CM/L licence covering the relevant form (solid or flake) and facility, with effect from 16 December 2020.

Are there additional customs declaration requirements for this HSN beyond BIS QCO compliance?

Yes. CBIC Circular 23/2023-Cus mandates additional qualifiers in import declarations for Chapter 28 commodities under paragraphs 4.1 and 4.2, with effect from 15 October 2023; this is a separate customs-clearance requirement independent of the BIS QCO.

Does the BIS CM/L licence cover both solid and flake forms of sodium sulphide under IS 297:2001?

No. IS 297:2001 covers both solid and flake forms, but a CM/L licence is scope-specific by product form and manufacturing facility; flake-form sodium sulphide from a facility not listed under the licensed scope is not covered by a CM/L granted for solid form.

What is the effective enforcement date for the sodium sulphide BIS QCO obligation?

The operative date binding on importers is 16 December 2020, per the CCR. The Sodium Sulphide (Quality Control) Order, 2020 was gazetted on 16 June 2020 under S.O. 1894(E); the six-month gap is the phase-in period before mandatory compliance.

Last verified against gazette notifications: 2026-05-16. Source: BIS / CBIC / Indian Customs CUSDATA.