US imports of Nucleic acids and their salts

US imports under HTS 2934 at a glance

Between March and July 2026, US importers entered $1.20 billion of nucleic acids and their salts under HTS heading 2934, from 34 of the 55 origin countries covered here and across 38 ten-digit tariff lines — roughly $240 million a month of customs value under a single four-digit heading.

The heading belongs to chapter 29, organic chemicals. Classification disputes in this range usually turn on the six-digit subheading, which is where the rates start to diverge.

Who exports nucleic acids and their salts to the United States

China is the largest origin with $317 million, or 26.4% of the heading, with India at 17.6% and Belgium at 16.9%. The top three take 60.9% between them — enough concentration to matter when one origin's duty treatment changes, but not so much that a buyer has no alternative to qualify.

Asian origins supply 50% of the heading, led by China, India, Japan and South Korea. That means ocean transit from Asian base ports and, for most of these countries, no free-trade-agreement relief — so the tariff line you classify into carries the full cost.

What importers actually paid in duty

Duty treatment is split. 56% of the entered value was dutiable and the rest came in free, usually under a trade agreement or a duty-free provision in the tariff schedule. CBP collected $53.3 million in all, an effective 7.9% on the dutiable value and $4.44 per $100 of goods once the free entries are counted.

The spread between origins is real. Among origins with at least 2% of the heading, China paid the most duty relative to value — $7.07 per $100 — while Portugal paid $0.03. On a $250,000 purchase order that gap is about $18,000 in duty alone, which is worth pricing into a sourcing decision rather than discovering on the entry summary.

The 10-digit lines under heading 2934

38 ten-digit lines carried trade under this heading in the period. The largest, 2934.99.90.01, took 30.1% of the heading at $361 million. 2934.99.30.00, 2934.99.39.00 and 2934.10.90.00 follow. Rates diverge between those lines, so the classification your broker files is worth checking against the goods rather than carried over from the last entry.

What the duty stack looks like

The rate on an entry is not one number. It is a stack: the general (column 1) rate for the 10-digit line, less any trade-agreement preference the goods qualify for, plus whatever additional duties apply to that product and origin, all applied to the customs value declared. The $4.44 per $100 above is what that stack averaged across every entry in this heading — a benchmark, not a quote.

For the origins carrying the most volume, the per-country breakdowns go a level deeper: China (2934.99.90), India (2934.99.90) and Belgium (2934.99.30). To price a specific shipment, put your 10-digit code and country of origin into the tariff simulator.

What this means for your next shipment

The numbers above are a starting point, not the answer for a specific shipment: the rate depends on the exact 10-digit line, the origin, and any trade-agreement claim you can substantiate. Airlift USA arranges the ocean and air movement and coordinates classification and entry filing through our licensed broker network.

For the operational side rather than the tariff side, see the Chemicals & Hazardous Goods Commodities guide for how this cargo moves, the China to USA lane for transit times and ports and the heading index to compare against the rest of chapter 29.