Sodium dithionites (sodium hydrosulphite)

Sodium dithionites (sodium hydrosulphite) inorganic sulphur compound

CBIC CLEARANCE

HSN 2831 10 10 (Sodium dithionites) is subject to mandatory additional qualifiers in import declarations under CBIC Circular 23/2023-Cus dated 30-09-2023, applicable to all commodities under Chapter 28 with effect from 15 October 2023. The Central Board of Indirect Taxes and Customs (CBIC) requires the qualifiers stipulated in paragraphs 4.1 and 4.2 of that circular to be declared at the bill-of-entry stage.

What this is

HSN code

2831 10 10

Chapter

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

Primary regulator

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

Customs documentation

Chapter 28 qualifiers from CBIC
Import declaration from CBIC

Compliance steps

1
Ensure the import declaration for sodium dithionites includes the mandatory additional qualifiers prescribed under paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus. These qualifiers are compulsory for all Chapter 28 commodities with effect from 15 October 2023.
CBIC Circular 23/2023-Cus dated 30-09-2023 · paragraphs 4.1 and 4.2
2
Upload all supporting documentation in e-Sanchit at the bill-of-entry stage and confirm that the Chapter 28 qualifiers are correctly populated before filing. Declarations filed without the mandatory qualifiers are liable to be held for amendment or rejection at the customs officer's discretion.
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 Chapter 28 description and omitting the additional qualifiers mandated by CBIC Circular 23/2023-Cus paragraphs 4.1 and 4.2. A declaration deficient in the prescribed qualifiers is treated as an incomplete entry and can attract detention and demurrage pending amendment, even when the underlying consignment is otherwise fully compliant.

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Frequently asked

Does HSN 2831 10 10 require BIS certification?

No, sodium dithionites are not covered by any BIS Quality Control Order. Import compliance for this tariff line is governed by the Central Board of Indirect Taxes and Customs under CBIC Circular 23/2023-Cus, which mandates additional qualifiers in the import declaration for all Chapter 28 commodities.

From what date are the mandatory Chapter 28 qualifiers required, and where are they specified?

The mandatory additional qualifiers became effective 15 October 2023 and are specified in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus dated 30 September 2023.

Does the qualifier obligation under Circular 23/2023-Cus apply only to Chapter 28, or to other chapters as well?

The circular extends the mandatory qualifier requirement to commodities under Chapters 28, 29, 32, 39 and CTH 3808; for HSN 2831 10 10, the Chapter 28 obligation is directly applicable.

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