Tetrahydro-1,1,2,3,3-pentamethy lindane (THPMI) (Tariff notice 27)
Check the tariff classification for Tetrahydro-1,1,2,3,3-pentamethy lindane (THPMI).
New regulation
A new regulation was published on 7 August 2024 and entered into force 20 days after this date.
L Series
Reg. 2024/2136
This is not considered a change in Northern Ireland practice.
Classification (Combined Nomenclature (CN) code)
3824 99 92
Description of goods
The product is a liquid mixture of chemicals consisting by weight of the following:
— 63% of tetrahydro-1,1,2,3,3-pentamethylindane (THPMI; CAS RN 33704-59-5); and
— 34% of hexahydro-1,1,2,3,3-pentamethylindane (HHPMI; CAS RN 33704-60-8); and
— 3% of 1,1,2,3,3-pentamethylindane (PMI; CAS RN 1203-17-4).
The mixture is obtained by catalytic hydrogenation of PMI (starting material). The products formed during the chemical reaction are THPMI (main product) and HHPMI (by-product).
The mixture is intended for direct use, without any purification, in the production of (rac)-6,7-Dihydro-1,1,2,3,3-pentamethyl-4(5H)-indanone (DPMI; CAS RN 33704-61-9) through allylicoxidation of THPMI.
Reason
Classification is determined by general rules 1 and 6 for the interpretation of the Combined Nomenclature, Note 1(a) to Chapter 29 and the wording of CN codes 3824, 3824 99 and 3824 99 92.
Due to the significant concentration of HHPMI, the product is a mixture that cannot be considered as a separate chemically defined organic compound consisting of one molecular species within the meaning of Note 1(a) to Chapter 29 (see the Harmonized System Explanatory Notes to Chapter 29, General, point (A), first paragraph). The mixture is therefore excluded from classification in Chapter 29.
Consequently, the mixture is to be classified under CN code 3824 99 92 as other preparations of the chemical or allied industries, not elsewhere specified or included.
Contact details
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