3912.31.00—Carboxymethylcellulose and its salts
General duty rate
6.4%
Across 2 10-digit lines
Coverage on this page
Plain-English explanation
HTS 3912.31.00 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Carboxymethylcellulose and its salts. It sits in Chapter 39: Plastics and articles thereof, Section VII: Plastics and Articles Thereof; Rubber and Articles Thereof and rolls up 2 10-digit statistical lines, all with a general duty rate of 6.4%. No Chapter 99 tariff modifications or AD/CVD orders currently flag any line under this tariff item in Tandom's catalog.
10-digit lines under 3912.31.00(2)
Pick a line to view full rate detail and compute landed duty
Frequently asked questions
What does HTS 3912.31.00 cover?
HTS 3912.31.00 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Carboxymethylcellulose and its salts. It belongs to Chapter 39 and rolls up 2 10-digit statistical lines that brokers actually file at entry.
What is the duty rate for HTS 3912.31.00?
Every 10-digit line under HTS 3912.31.00 carries a general (Column 1) duty rate of 6.4%. Section 301, Section 232, and AD/CVD overlays may stack on top of this rate at the per-line level — open a specific 10-digit code to see its complete tariff stack.
How do I find the right 10-digit line under HTS 3912.31.00?
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader tariff item HTS 3912.31.00 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
Are there AD/CVD orders affecting HTS 3912.31.00?
Learn more
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