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HSChapter 29
U.S. imports of 1,2,4-benzenetricarboxylic acid, 1,2-dianhydride (trimellitic anhydride); naphthalic anhydride; phthalic acid; and 4-sulfo-1,8-naphthalic anhydride (HS 2917390400) totaled $6.4M in June 2026, traded with 5 countries.
Importers of 1,2,4-Benzenetricarboxylic Acid, 1,2-Dianhydride (trimellitic Anhydride); Naphthalic Anhydride; Phthalic Acid; and 4-Sulfo-1,8-Naphthalic Anhydride paid $2.2M in duties in June 2026 — an effective duty rate of 36% on $6.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. 1,2,4-Benzenetricarboxylic Acid, 1,2-Dianhydride (trimellitic Anhydride); Naphthalic Anhydride; Phthalic Acid; and 4-Sulfo-1,8-Naphthalic Anhydride imports of $6.4M in June 2026 ran 227% above the year-to-date monthly average of $1.9M.
Supplier Network
Get discovered by U.S. importers searching for HS 2917390400 — 1,2,4-Benzenetricarboxylic Acid, 1,2-Dianhydride (trimellitic Anhydride); Naphthalic Anhydride; Phthalic Acid; and 4-Sulfo-1,8-Naphthalic Anhydride. Be the first supplier listed.
Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $4.8M | -- | -$4.8M |
| ITALY | $1.3M | -- | -$1.3M |
| CANADA | $174K | -- | -$174K |
| NETHERLANDS | -- | -- | -- |
| JAPAN | -- | -- | -- |
No geographic breakdown available
U.S. trade for this product is not broken down by state or port in the latest Census Bureau release.