Phthalic anhydride

Phthalic anhydride, an aromatic dicarboxylic acid anhydride

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 5158 · CIB&RC OVERLAY · NDPS OVERLAY

HSN 2917 35 00 (Phthalic anhydride) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 5158:1987 is mandatory under the ISI Mark Scheme with effect from 15 October 2023, by virtue of the Phthalic Anhydride (Quality Control) Second Amendment Order, 2022. Central Insecticides Board and Registration Committee, Narcotic Drugs and Psychotropic Substances, and Central Board of Indirect Taxes and Customs additional-qualifier requirements apply as separate customs-clearance overlays.

What this is

HSN code

2917 35 00

Chapter

29 · Organic chemicals

BIS QCO

Applicable · ISI Mark Scheme · CM/L required

Indian Standard

IS 5158:1987 · effective 15-10-2023

Applicable Partner Government Agencies

BISBIS·Bureau of Indian Standards

CIB&RCCIB&RC·Central Insecticides Board and Registration Committee

NDPSNDPS·Narcotics Control Bureau

Procedural directions for customs clearance are issued by: Central Board of Indirect Taxes and Customs, Directorate General of Foreign Trade.

Compliance steps

1
Source only from a Bureau of Indian Standards CM/L-licensed manufacturer holding a current licence against IS 5158:1987 for phthalic anhydride. Verify the supplier's CM/L number, licensed product scope, and manufacturing facility on the BIS online register before placing the purchase order.
Phthalic Anhydride (Quality Control) Second Amendment Order, 2022 · S.O. 5434(E) dated 24-12-2021 as amended · S.O. 5989(E) dated 21-12-2022
2
Ensure every consignment lot bears the ISI standard mark and the supplier's CM/L number under Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. Marking must appear on the product or its primary packaging as specified in IS 5158:1987.
Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · S.O. 5434(E) dated 24-12-2021
3
If the product or any co-imported derivative figures in the Schedule to the Insecticides Act, 1968, obtain registration and a permit from the secretariat of the Central Insecticides Board and Registration Committee. Import is restricted to places specified under Rule 45 of the Insecticides Rules, 1971.
Insecticides Act, 1968 Schedule · Rule 45 of the Insecticides Rules, 1971
4
Upload mandatory e-Sanchit documents — certificate of analysis (0010DC), batch release certificate (0030DC), consignment label (0110DC), registration certificate for drugs (101DC1), and import licence for drugs (9111DC) — before the proper officer grants out-of-charge on PGA-facilitated bills.
CBIC Circular 23/2023-Cus dated 30-09-2023 · ITC (HS) policy condition 2 to Chapter 29
5
Include mandatory additional qualifiers in the import declaration for Chapter 29 commodities as stipulated in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus, effective 15 October 2023. Quote the supplier's BIS CM/L number alongside these qualifiers on the bill of entry.
CBIC Circular 23/2023-Cus dated 30-09-2023 · Phthalic Anhydride (Quality Control) Second Amendment Order, 2022

A word of counsel

The single most common error on this tariff line is treating the IS 5158:1987 enforcement date of 22 June 2023 (cited in the CCR) and the QCO-amended operative date of 15 October 2023 interchangeably, leading importers to present CM/L documentation anchored to the wrong date and face detention on date-of-effect grounds. The CCR records both dates — the original BIS applicability date of 22-06-2023 and the QCO Second Amendment date of 15-10-2023 — and customs officers verify the CM/L validity window against the operative enforcement date, not the earlier reference date. Ensure the CM/L licence was in force on and after 15 October 2023 and covers the specific manufacturing facility supplying the consignment.

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Frequently asked

Does HSN 2917 35 00 require BIS certification?

Yes. Conformity to IS 5158:1987 is mandatory under the ISI Mark Scheme with effect from 15 October 2023 under the Phthalic Anhydride (Quality Control) Second Amendment Order, 2022; import is permitted only from manufacturers holding a current BIS CM/L licence against IS 5158:1987.

Is a Central Insecticides Board and Registration Committee permit required for every phthalic anhydride import?

Only if the product or a co-imported derivative figures in the Schedule to the Insecticides Act, 1968. Where applicable, registration and a permit from the Central Insecticides Board and Registration Committee are required, and import is restricted to ports specified under Rule 45 of the Insecticides Rules, 1971.

What additional declaration requirements apply to Chapter 29 imports under CBIC Circular 23/2023-Cus?

Mandatory additional qualifiers must be included in the import declaration per paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus, effective 15 October 2023. Absent qualifiers cause the bill of entry to be held pending amendment before out-of-charge is granted.

Does a single CM/L licence cover all grades and manufacturing facilities for phthalic anhydride?

No. The CM/L licence is facility-specific and scope-specific under IS 5158:1987; product from a plant or grade outside the licensed scope is not covered, and customs detains consignments where the bill of entry facility does not match the BIS register.

Last verified against gazette notifications: 2026-05-18. Source: BIS / CIB&RC / NDPS / DGFT / CBIC / Indian Customs CUSDATA.