Dihydroxyacetone Dimer (DHA Dimer)
DHA Dimer is the cyclic trimer form of 1,3-Dihydroxyacetone, a stable ketone-alcohol used in self-tanning formulations to prevent oxidation during storage. Classified under HTS 2914.40.60.00 as it retains the core ketone-alcohol structure with oxygen functions. It dimerizes in solution but is imported as a white powder for reconversion to active DHA.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If considered primarily as a polyhydric alcohol without ketone emphasis
Chapter notes prioritize oxygen function classification; if alcohol groups dominate over ketone, it may fall under acyclic alcohols of heading 2905.
If pre-mixed with tanning enhancers for direct dye use
Synthetic organic products used as tanning agents shift to Chapter 32 if formulated beyond simple chemical compounds.
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Import Tips & Compliance
• Provide stability data and dimer conversion specs in documentation; label as 'for further manufacturing' to avoid cosmetic mixture classification; watch for humidity control in shipping to prevent premature dimerization
Related Products under HTS 2914.40.60.00
1,3-Dihydroxyacetone (DHA) Powder
Pure 1,3-Dihydroxyacetone (DHA) is a ketone-alcohol compound used primarily as a self-tanning agent in cosmetics, reacting with skin proteins to produce a natural-looking tan. It falls under HTS 2914.40.60.00 as a chemically defined ketone-alcohol with other oxygen functions, specifically the simple triose sugar derivative. This white crystalline powder is supplied at 98%+ purity for industrial formulation.
Ph Eur Grade 1,3-Dihydroxyacetone
European Pharmacopoeia (Ph Eur) grade DHA is high-purity 1,3-Dihydroxyacetone meeting strict pharma standards for use in medical-grade self-tanning treatments. It is classified under HTS 2914.40.60.00 as a separate chemically defined ketone-alcohol per Chapter 29 note (a). This grade ensures minimal impurities for sensitive skin applications.
Cosmetic-Grade DHA Flakes
Cosmetic-grade DHA flakes are 1,3-Dihydroxyacetone in flake form for easy dissolution in self-tanning lotions and sprays. Falls under HTS 2914.40.60.00 as a pure ketone-alcohol compound with added stabilizer only for transport per Chapter note (f). Purity exceeds 97% for consumer product formulations.
USP Grade Dihydroxyacetone
United States Pharmacopeia (USP) grade 1,3-Dihydroxyacetone is a purified ketone-alcohol for pharmaceutical and high-end cosmetic self-tanning agents. Classified in HTS 2914.40.60.00 as a chemically defined organic compound under Chapter 29. Meets USP monograph standards for identity, assay, and impurities.
1,3-Dihydroxyacetone 99% Technical Grade
Technical grade DHA at 99% purity is 1,3-Dihydroxyacetone for industrial self-tanning and biochemical applications. HTS 2914.40.60.00 covers this ketone-alcohol as a separate organic compound, allowing minor impurities. Used in large-scale cosmetic manufacturing.
DHA with Anti-Caking Stabilizer
1,3-Dihydroxyacetone powder with added anti-caking agent for preservation during transport, per Chapter 29 note (f). This ketone-alcohol is used in self-tanning formulations and remains classified under HTS 2914.40.60.00 as the additions do not change its general use nature.