Other wastes from the chemical or allied industries: — Mainly containing organic constituents
N354667 · 2025-10-21 — The tariff classification of a residual waste stream from Canada
The item in question is called “Caustic/Red Oil”. You describe it as a residual waste stream generated from the chemical manufacture of ethylene. It is comprised of various organic substances. Once imported into the United States it will be shipped for incineration under all applicable waste and transportation regulatory requirements. In your submission, you suggest classification under subheading 3825.61.0000 Harmonized Tariff Schedule of the United States (HTSUS). We agree The applicable subheading for “Caustic/Red Oil” will be 3825.61.0000, HTSUS, which provides for for Residual products…
L89631 · 2006-01-30 — The tariff classification of Spent "Mother Liquor" from Ireland or India.
, you requested a tariff classification ruling for Spent “Mother Liquor” which is used in the production of D-Mannose. You state in your inquiry that the spent mother liquor, in its imported condition, contains diminished levels of mannose, together with rare sugars such as methyl-a-xylose, fructose, and trace amounts of lyxose and L-fructose. Additionally, there are traces of industrial methylated spirit and other solvent materials used in offshore processing operations. You claim that the spent mother liquor has no commercial use and is only fit for reprocessing when combined with virgin…
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