4-methylpentan-2-one (methyl isobutyl ketone)
4-methylpentan-2-one (methyl isobutyl ketone, MIBK)
HSN 2914 13 00 (4-methylpentan-2-one, methyl isobutyl ketone) is subject to Central Insecticides Board and Registration Committee (CIB&RC) registration and import-permit requirements under the Insecticides Act, 1968, where the substance figures in the Schedule to that Act. Narcotic Drugs and Psychotropic Substances (NDPS) import-certificate conditions under Chapter VII-A of the NDPS Rules, 1985 and Directorate General of Foreign Trade (DGFT) ITC (HS) policy condition 2 of Chapter 29 apply as additional 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.
- 1Where the consignment 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 dispatch. Import is restricted to ports notified under Rule 45 of the Insecticides Rules, 1971; consignments routed through unnotified ports are liable to seizure.Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971 · ITC (HS) policy condition 2 of Chapter 29
- 2If the substance is also classified as an NDPS substance, obtain an import certificate under Rule 53 of the NDPS Rules, 1985 for medical and scientific use purposes under Chapter VII-A. Imports outside this category are governed by Appendix-I to the ITC (HS) Schedule.Chapter VII-A and Rule 53 of the NDPS Rules, 1985 · ITC (HS) policy condition 2 of Chapter 29
- 3Ensure the bill of entry includes the mandatory additional qualifiers for Chapter 29 commodities as stipulated in paras 4.1 and 4.2 of CBIC Circular 23/2023-Cus dated 30-09-2023, operative with effect from 15-10-2023. Where the import quantity exceeds the specified threshold for hazardous substances, an insurance policy under the Public Liability Insurance Act, 1991 must also 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 assuming that methyl isobutyl ketone, as an industrial solvent, falls outside the Insecticides Act, 1968 Schedule and therefore requires no CIB&RC clearance. Whether CIB&RC registration applies turns on the Schedule classification of the specific formulation being imported, not the generic substance description; an importer who files without first confirming Schedule status risks consignment detention at the notified port and monetary penalty under the Insecticides Act, independent of any NDPS or PLI Act obligations.