Chromium trioxide

Chromium trioxide, chromium oxides and hydroxides

CBIC CLEARANCE

HSN 2819 10 00 (Chromium trioxide) is subject to mandatory additional qualifier declarations in the import entry under Central Board of Indirect Taxes and Customs (CBIC) Circular 23/2023-Cus dated 30-09-2023, operative with effect from 15 October 2023. The circular requires importers of commodities under Chapters 28, 29, 32, 39 and CTH 3808 to furnish specific technical qualifiers at the bill-of-entry stage as stipulated in paragraphs 4.1 and 4.2.

What this is

HSN code

2819 10 00

Chapter

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

Primary regulator

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

Customs documentation

Chapter 28 qualifiers from CBIC
Technical specification declaration from importer

Compliance steps

1
At the bill-of-entry stage, furnish the mandatory additional technical qualifiers for Chromium trioxide as prescribed in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus. These qualifiers must be correctly declared in the import entry; absence or incorrect declaration attracts customs examination and potential detention of the consignment.
CBIC Circular 23/2023-Cus dated 30-09-2023, paragraphs 4.1 and 4.2, operative from 15-10-2023
2
Verify that the import declaration covers the Chapter 28 qualifier requirements in full before filing. Partial or generic declarations for Chapter 28 chemicals are flagged during customs scrutiny and may result in reassessment or misdeclaration proceedings under the Customs Act, 1962.
CBIC Circular 23/2023-Cus dated 30-09-2023

A word of counsel

The most common error on this tariff line is filing the bill of entry with a generic chemical description and omitting the specific technical qualifiers mandated for Chapter 28 commodities. CBIC Circular 23/2023-Cus requires positively stated qualifiers in the import declaration itself — not merely in attached supporting documents — and a deficient declaration triggers customs examination, demurrage, and potential misdeclaration proceedings even when the physical goods are fully compliant.

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Frequently asked

Does HSN 2819 10 00 require BIS certification?

No, Chromium trioxide falls outside the BIS Quality Control Order regime; no BIS QCO covers this product. Import compliance is governed by CBIC Circular 23/2023-Cus, which mandates specific additional qualifiers in the bill-of-entry declaration for Chapter 28 chemicals with effect from 15 October 2023.

Which specific qualifiers must be declared for Chromium trioxide under CBIC Circular 23/2023-Cus?

The qualifiers are stipulated in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus dated 30-09-2023; importers should consult those paragraphs directly to identify the precise technical attributes required for Chapter 28 commodity declarations.

Does the Chapter 28 qualifier requirement apply to all Chromium oxides and hydroxides under heading 2819?

Yes. The qualifier obligation under CBIC Circular 23/2023-Cus applies across commodities under Chapter 28 as a whole, covering Chromium trioxide (2819 10 00) and other heading 2819 sub-tariff lines alike.

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