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Sodium pyrosulphate

Sodium pyrosulphate, inorganic sulphate salt

CBIC CLEARANCE

HSN 2833 19 20 (Sodium pyrosulphate) is subject to mandatory additional qualifier declarations in the import bill of entry, administered by the Central Board of Indirect Taxes and Customs (CBIC) under CBIC Circular 23/2023-Cus dated 30-09-2023. The qualifier requirement applies to all commodities under Chapter 28 with effect from 15 October 2023 and must be reflected in the import declaration at the time of filing.

What this is
HSN code
2833 19 20
Chapter
28 · Inorganic chemicals; organic or inorganic compounds of precious metals
Primary regulator
CBIC · Mandatory Chapter 28 qualifiers per CBIC Circular 23/2023-Cus
Customs documentation
  • Chapter 28 qualifiers from CBIC
  • Import declaration to CBIC
Compliance steps
  1. 1
    Include the mandatory additional qualifiers in the import declaration for sodium pyrosulphate as stipulated in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus dated 30-09-2023. The requirement has been operative with effect from 15 October 2023 and non-compliance renders the bill of entry deficient.
    CBIC Circular 23/2023-Cus dated 30-09-2023, para 4.1 and 4.2
  2. 2
    Verify that the qualifier declarations align with the actual chemical composition and specifications of the imported consignment before filing the bill of entry. Mismatched or absent qualifiers may trigger examination, detention, and a request for re-filing.
    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 sodium pyrosulphate as a straightforward inorganic chemical with no special declaration burden. CBIC Circular 23/2023-Cus applies across Chapters 28, 29, 32, 39 and CTH 3808; the qualifier omission is detected at the system level and results in examination or detention pending re-filing, with attendant demurrage and ground rent exposure.

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Frequently asked
Does HSN 2833 19 20 require BIS certification?
No, no BIS Quality Control Order covers sodium pyrosulphate or this product family. Import is governed by the Central Board of Indirect Taxes and Customs mandatory-qualifier regime under CBIC Circular 23/2023-Cus, which applies to all Chapter 28 commodity declarations with effect from 15 October 2023.
From which date are the Chapter 28 mandatory qualifiers operative for this HSN?
The mandatory additional qualifier requirement under CBIC Circular 23/2023-Cus became operative with effect from 15 October 2023 and applies to all import declarations for commodities under Chapter 28, including HSN 2833 19 20.
What happens if the mandatory qualifiers are omitted from the bill of entry?
An import declaration filed without the stipulated qualifiers is treated as deficient under paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus, exposing the consignment to examination, detention, and demurrage until the declaration is corrected or re-filed.
Last verified against gazette notifications: 2026-05-16. Source: CBIC / Indian Customs CUSDATA.
Related
ChapterChapter 28 · Inorganic chemicals; organic or inorganic compounds of precious metalsIndustryChemicals industryHSNSULPHATES; ALUMS; PEROXOSULPHATES (PERSULPHA-TES)