Potassium ferrocyanide

Potassium ferrocyanide, complex cyanide salt

CBIC CLEARANCE

HSN 2837 20 30 (Potassium ferrocyanide) is subject to mandatory additional-qualifier declarations in the import entry administered by the Central Board of Indirect Taxes and Customs (CBIC) under CBIC Circular 23/2023-Cus dated 30-09-2023. With effect from 15 October 2023, all import declarations for commodities under Chapter 28 must include the specified qualifiers at paragraphs 4.1 and 4.2 of that circular.

What this is

HSN code

2837 20 30

Chapter

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

Primary regulator

CBIC · Circular 23/2023-Cus dated 30-09-2023, Chapter 28 mandatory qualifiers

Customs documentation

Chapter 28 qualifiers from CBIC
Import declaration to CBIC

Compliance steps

1
Include the mandatory additional qualifiers in the import declaration for this Chapter 28 commodity as stipulated in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus. This requirement has been operative with effect from 15 October 2023 and applies to every bill of entry filed for potassium ferrocyanide.
CBIC Circular 23/2023-Cus dated 30-09-2023, para 4.1 and 4.2
2
Verify at the bill-of-entry stage that the qualifier fields are correctly populated before submission; declarations filed without the Chapter 28 qualifiers are liable to be treated as deficient entries, attracting examination, detention, and potential re-assessment by the proper officer.
CBIC Circular 23/2023-Cus dated 30-09-2023, para 4.1 and 4.2

A word of counsel

The most common error on this tariff line is filing the bill of entry without the Chapter 28 mandatory qualifiers on the assumption that potassium ferrocyanide — a complex cyanide rather than a simple cyanide — falls outside the Chapter 28 qualifier mandate. It does not: CBIC Circular 23/2023-Cus applies to all commodities under Chapter 28 without carve-outs for complex cyanides, and a deficient qualifier field triggers examination orders and demurrage accumulation at the port before the deficiency is rectified.

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Frequently asked

Does HSN 2837 20 30 require BIS certification?

No, potassium ferrocyanide is not covered by any BIS Quality Control Order. The operative compliance obligation is the mandatory additional-qualifier declaration under CBIC Circular 23/2023-Cus dated 30-09-2023, administered by the Central Board of Indirect Taxes and Customs for all Chapter 28 commodities.

From what date do the Chapter 28 mandatory qualifiers apply, and which paragraphs govern the content?

The qualifier requirement is operative with effect from 15 October 2023; the specific content obligations are set out in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus dated 30 September 2023.

Does the mandatory-qualifier regime under CBIC Circular 23/2023-Cus extend beyond Chapter 28?

Yes. The same circular extends the mandatory additional-qualifier requirement to commodities under Chapters 29, 32, 39 and CTH 3808, though each chapter's qualifier specifications are governed by the relevant paragraphs of the circular applicable to that chapter.

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