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Spermine Tetrahydrochloride

Spermine tetrahydrochloride, a tetraamine salt, classified under HTS 2921.29.00.55 as acyclic polyamine derivative salt for biochemical research.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China6.5%+25.0%31.5%
🇲🇽Mexico6.5%—6.5%
🇨🇦Canada6.5%—6.5%
🇩🇪Germany6.5%—6.5%
🇯🇵Japan6.5%—6.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2936.29Lower: 10% vs 31.5%

If vitamin B6 derivative

Specific provitamins have dedicated classification regardless of amine structure

3822Lower: 10% vs 31.5%

If diagnostic reagents containing this compound

Prepared laboratory reagents shift to Chapter 38 diagnostic provisions

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Import Tips & Compliance

• Verify Sigma-Aldrich/USP reference standards matching imported specification

• Document research institution end-user to avoid pharmaceutical classification

• Maintain cold chain documentation (2-8°C storage required)

Related Products under HTS 2921.29.00.55

Ethylenediamine Dihydrochloride

Ethylenediamine dihydrochloride is the salt of ethylenediamine, an acyclic polyamine with two amino groups, classified under HTS 2921.29.00.55 as a derivative salt of acyclic polyamines. It is commonly used as a curing agent in epoxy resins and as an intermediate in pharmaceutical synthesis.

Diethylenetriamine (DETA)

Diethylenetriamine is an acyclic polyamine with three amino groups, falling under HTS 2921.29.00.55 as an 'other' acyclic polyamine. It serves as a key epoxy curing agent and chelating agent in industrial applications.

Hexamethylenediamine

Hexamethylenediamine, an acyclic diamine used primarily in nylon-6,6 production, is classified under HTS 2921.29.00.55 as an other acyclic polyamine. It meets Chapter 29 requirements for chemically defined organic compounds.

N,N-Dimethylethylenediamine

This tertiary amine derivative of ethylenediamine is an acyclic polyamine classified under HTS 2921.29.00.55. Used as a catalyst in polyurethane production and pharmaceutical intermediate.

1,3-Diaminopropane

1,3-Diaminopropane is a straight-chain acyclic polyamine with two primary amino groups, classified under HTS 2921.29.00.55. Applications include epoxy hardeners and chelating agents.

Triethylenetetramine (TETA)

Triethylenetetramine, a linear tetraamine, falls under HTS 2921.29.00.55 as an acyclic polyamine derivative. Widely used as high-performance epoxy curing agent.