1,5 Napthelene disulphonic acid (Armstrong’s acid)
1,5-naphthalene disulphonic acid (Armstrong's acid)
HSN 2904 10 20 (1,5-Naphthalene disulphonic acid / Armstrong's acid) is subject to Central Insecticides Board and Registration Committee (CIB&RC) registration and import permit under the Insecticides Act, 1968, where the substance figures in the Schedule to that Act. Narcotic Drugs and Psychotropic Substances (NDPS) conditions under Chapter VII-A of the NDPS Rules, 1985 and the Directorate General of Foreign Trade (DGFT) ITC (HS) policy condition 2 of Chapter 29 apply as additional regulatory overlays.
- Registration certificate from CIB&RC
- Import permit from CIB&RC
- Chapter 29 qualifiers from CBIC
Procedural directions for customs clearance are issued by: Directorate General of Foreign Trade, Central Board of Indirect Taxes and Customs.
- 1If the substance falls within the Schedule to the Insecticides Act, 1968, obtain registration and an import permit from the Secretariat of the Central Insecticides Board and Registration Committee before shipment. Import is permitted only through the ports specified under Rule 45 of the Insecticides Rules, 1971; consignments arriving at non-notified ports are liable to detention and seizure.Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971
- 2Where the substance qualifies as an NDPS item, secure an import certificate under Rule 53 of the NDPS Rules, 1985 for medical and scientific purposes (details at http://cbn.nic.in). Imports outside that category are governed by Appendix-I to the ITC (HS) Schedule under ITC (HS) policy condition 2 of Chapter 29.Chapter VII-A and Rule 53 of the NDPS Rules, 1985 · ITC (HS) policy condition 2 of Chapter 29
- 3Ensure the bill of entry carries all mandatory additional qualifiers for Chapter 29 commodities as stipulated in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus dated 30-09-2023, effective from 15 October 2023. Where import of a specified hazardous substance exceeds notified thresholds, an insurance policy under the Public Liability Insurance Act, 1991 must be in place per S.O. 227(E) dated 24-03-1992.CBIC Circular 23/2023-Cus dated 30-09-2023 · S.O. 227(E) dated 24-03-1992
The most common error on this tariff line is failing to determine — before filing the bill of entry — whether the specific batch of Armstrong's acid is scheduled under the Insecticides Act, 1968, and whether it simultaneously triggers NDPS conditions. Both regimes impose independent pre-import obligations: an omitted CIB&RC import permit and a missing NDPS import certificate are separate contraventions, each carrying its own enforcement consequence — port detention, monetary penalty, and, for NDPS breaches, criminal liability under the NDPS Act.