Primuline Base
Primuline base is the primary aromatic amine derivative of benzothiazole used as the key intermediate for primuline direct dyes, explicitly listed under HTS 2934.20.3000. This chemically defined compound contains the unfused benzothiazole ring system required by the heading.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when diazotized or coupled to form actual primuline dye chromophore
Completed synthetic azo dyes classified in Chapter 32 by color function.
If other thiazole ring intermediates not specifically enumerated
Adjacent subheading for unspecified benzothiazole dye intermediates.
If amine function considered principal characteristic
Imine-function compounds may classify here if ring system secondary.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Reference historical dye intermediate status and CAS registry in commercial invoices
• Include synthesis pathway documentation showing benzothiazole ring derivation
• Distinguish from finished primuline dye (3204) by providing purity >95% specs
Related Products under HTS 2934.20.30.00
2-Amino-6-methoxybenzothiazole
2-Amino-6-methoxybenzothiazole is a specific benzothiazole derivative with an amino group at position 2 and a methoxy group at position 6, explicitly listed under HTS 2934.20.3000. It is a chemically defined heterocyclic compound used primarily as an intermediate in dye synthesis and pharmaceutical production.
6-Ethoxy-2-benzothiazolethiol
6-Ethoxy-2-benzothiazolethiol features ethoxy substitution at position 6 and thiol (-SH) functionality at position 2 on the benzothiazole ring, explicitly covered by HTS 2934.20.3000. Used in synthesis of vulcanization accelerators and specialty dyes.
3-Methylbenzothiazole-2-hydrazone
3-Methylbenzothiazole-2-hydrazone is a benzothiazole derivative with methyl at nitrogen position 3 and hydrazone (=NNH2) at position 2, specifically named in HTS 2934.20.3000. Primarily used as intermediate for pharmaceutical hydrazone derivatives and analytical reagents.
2-Amino-6-methylbenzothiazole
2-Amino-6-methylbenzothiazole contains the precise benzothiazole ring system with amino at position 2 and methyl at position 6, directly enumerated in HTS 2934.20.3000. This pure organic compound serves as a key intermediate for azo dyes and fluorescent brighteners.