Peroxosulphates (persulphates)

Peroxosulphates (persulphates), inorganic sulphate compounds

CBIC CLEARANCE

HSN 2833 40 00 (Peroxosulphates / persulphates) is subject to mandatory additional qualifiers in the import declaration administered by the Central Board of Indirect Taxes and Customs (CBIC) under CBIC Circular 23/2023-Cus dated 30-09-2023. The qualifier requirement, operative from 15 October 2023, applies to all Chapter 28 commodity imports and must be satisfied at the bill-of-entry stage before out-of-charge.

What this is

HSN code

2833 40 00

Chapter

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

Primary regulator

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

Customs documentation

Chapter 28 qualifiers from CBIC
Import declaration from 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. The qualifier regime is operative with effect from 15 October 2023 and applies to all consignments declared under HSN 2833 40 00.
CBIC Circular 23/2023-Cus dated 30-09-2023, Para 4.1 and 4.2
2
Upload the completed import declaration with the Chapter 28 qualifiers in e-Sanchit before filing the bill of entry. The proper officer will verify qualifier compliance before granting out-of-charge; a declaration that omits the required qualifiers is liable to detention pending amendment.
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, treating persulphates as a routine industrial chemical outside the qualifier regime. CBIC Circular 23/2023-Cus extends the requirement to all Chapter 28 commodities without sub-heading carve-outs, and an incomplete qualifier field triggers a mismatch at the system level — resulting in consignment hold, demurrage, and ground rent accumulating at port until the declaration is amended and re-verified.

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Frequently asked

Does HSN 2833 40 00 require BIS certification?

No, peroxosulphates (persulphates) are not covered by any BIS Quality Control Order. The operative requirement is compliance with the CBIC mandatory-qualifier regime for Chapter 28 commodities under CBIC Circular 23/2023-Cus dated 30-09-2023.

From which date are the Chapter 28 mandatory qualifiers required for this HSN?

The mandatory additional qualifier requirement under CBIC Circular 23/2023-Cus applies with effect from 15 October 2023 and covers all import declarations for commodities under Chapters 28, 29, 32, 39 and CTH 3808.

What happens if the import declaration omits the mandatory qualifiers at the bill of entry?

The proper officer may withhold out-of-charge until the declaration is corrected to include the qualifiers per paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus, exposing the consignment to detention, demurrage, and ground rent charges.

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