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Isopropylideneglycerol (Solketal)

Solketal is a protected glycerol ether (acetonide) used as a chiral building block in synthesis. It meets HTS 2909.49.20.00 as a chemically defined glycerol ether derivative. Key intermediate for pharmaceuticals.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
šŸ‡ØšŸ‡³China3.7%+133.8%137.5%
šŸ‡²šŸ‡½Mexico3.7%+106.3%110%
šŸ‡ØšŸ‡¦Canada3.7%+106.3%110%
šŸ‡©šŸ‡ŖGermanyFree+21.3%21.3%
šŸ‡ÆšŸ‡µJapanFree+23.8%23.8%

Alternative Classifications

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

2932.99Lower: 16.2% vs 137.5%

If classified as a cyclic acetal of polyhydric alcohol

Chapter notes exclude certain cyclic acetals from 2932, but unprotected polyols excluded entirely.

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

• Provide NMR spectra confirming acetonide protection on glycerol

• Declare as research chemical if lab quantities to simplify entry