U.S. imports of Polyphenols, Not Elsewhere Specified or Included (HS 290729) totaled $10.6M in September 2026, imported from 24 countries.
Importers of Polyphenols, Not Elsewhere Specified or Included paid $1.5M in duties in September 2026, an average duty rate of 14.17% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Polyphenols, Not Elsewhere Specified or Included imports of $10.6M in September 2026 ran 22% above the year-to-date monthly average of $8.7M.
Last updated: September 2026 dataTert-butylhydroquinone (TBHQ, 2907292500), 4,4'-biphenol (2907291500), pyrogallic acid (2907291000), and phenol-alcohols (2907290500) are among the commercially distinct compounds grouped in this residual polyphenol heading, each serving different industrial niches from food-grade antioxidants to liquid-crystal polymer monomers. France and India are the leading suppliers to the US market. The heading's breadth means that classification at the 10-digit level requires careful matching of chemical identity to the enumerated lines before defaulting to the NESOI basket (2907299000). Goods of Chinese origin are subject to Section 301 tariffs.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
130 import shipments a month
TBHQ has its own dedicated 10-digit line, 2907292500, and should not be entered under the NESOI basket 2907299000. Importers should confirm the chemical identity with a certificate of analysis and cite the specific line on the entry to avoid classification disputes.
4,4'-Biphenol is a monomer used in the production of high-performance liquid-crystal polymers (LCPs) and specialty epoxy resins for electronics and aerospace applications. Its relatively niche demand profile means supply is concentrated among a small number of specialty chemical producers, making lead-time management a key procurement consideration.
Subheading 1 of 9 in heading 2907
Subheading 290729 · $10.6M of $19.2M
Trade Directory
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ImportsExports
Imports
$10.6MYoY · free account
Exports
$5.2MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to September 2026, the U.S. imported $99.3M of Polyphenols, Not Elsewhere Specified or Included and exported $37.2M.
Through September 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2907299000 | Polyphenols, NESOI | $7.0M | 17.83% | 99.95% | $1.2M |
| 2907291500 | 4,4'-Biphenol | $161K | 10.00% | 100.00% | $16K |
| 2907292500 | Tert-Butylhydroquinone | $66K | 18.59% | 100.00% | $12K |
| 2907291000 | Pyrogallic Acid | $45K | 13.80% | 100.00% | $6K |
| 2907290500 | Phenol-Alcohols | $38K | 0.00% | 100.00% | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2907299000 | Polyphenols, NESOI | $2.5M |
| 2907291500 | 4,4'-Biphenol | $712K |
| 2907290500 | Phenol-Alcohols | $324K |
| 2907292500 | Tert-Butylhydroquinone | $275K |
| 2907291000 | Pyrogallic Acid (1,2,3-Trihydroxybenzene) | $3K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · September 2026
origin
India and Germany together supply 55% of it. China pays 23.1% duty; Taiwan 8.5%.
customs district
destination
entry
rate provision · imports
duty collected equals 14.17% of imports for consumption.