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HSChapter 29
U.S. imports of unfused triazine ring compounds (excluding melamine) (HS 293369) totaled $34.6M in May 2026, traded with 21 countries.
Importers of Unfused Triazine Ring Compounds (Excluding Melamine) paid $1.9M in duties in May 2026 — an effective duty rate of 6.8% on $27.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: May 2026 dataCompounds containing an unfused triazine ring but excluding melamine cover a commercially diverse set of chemicals, including cyanuric chloride (2933696010), sodium dichloroisocyanurate and trichloroisocyanuric acid (2933696015) — both widely used as pool and water-treatment disinfectants — hexamethylenetetramine (2933695000), and triazine-based pesticides (2933696021). Cyanuric chloride is also a key intermediate in dye and agrochemical synthesis, while the isocyanurate disinfectants are subject to EPA registration requirements as antimicrobial pesticides. The rubber-processing subheading (2933696030) captures triazine-based vulcanization accelerators, illustrating the heading's cross-industry reach. Classification turns on the specific compound identity and its declared end use.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yes. Both compounds function as antimicrobial pesticides and are subject to EPA registration under FIFRA. Importers must ensure the product is registered or exempt, and shipments may be subject to EPA review at the port of entry in addition to standard CBP clearance.
The pesticide lines (e.g., 2933696021) capture triazine-ring compounds whose primary commercial use is crop protection or biocidal activity, while 2933696030 covers compounds used as rubber processing aids such as vulcanization accelerators. The declared end use and product documentation — including safety data sheets and product labels — are key evidence in determining the correct subheading.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2933696050 | OTHER CMPDS CONT AN UNFUSED TRIAZINE RING ETC | $11.8M | 8.16% | 92.03% | $960K |
| 2933696015 | SODIUM DICHLOROISOCYANURATE & TRICHLOROISOCYANURIC | $8.4M | 2.10% | 49.49% | $176K |
| 2933696021 | PESTICIDES W/ UNFUSED TRIAZINE RING ETC, NESOI | $4.1M | 5.22% | 100.00% | $213K |
| 2933696030 | CMPDS CONT AN UNFUSED TRIAZINE RING USED AS RUB PR | $472K | 8.82% | 100.00% | $42K |
| 2933696010 | CYANURIC CHLORIDE | $284K | 9.20% | 100.00% | $26K |
| 2933695000 | HEXAMETHYLENETETRAMINE | $228K | 16.30% | 100.00% | $37K |
| 2933692000 | 2,4-DIAMINO-6PHENYL-1,3,5-TRIAZINE | $98K | 33.85% | 100.00% | $33K |
OTHER CMPDS CONT AN UNFUSED TRIAZINE RING ETC
SODIUM DICHLOROISOCYANURATE & TRICHLOROISOCYANURIC
PESTICIDES W/ UNFUSED TRIAZINE RING ETC, NESOI
CMPDS CONT AN UNFUSED TRIAZINE RING USED AS RUB PR
CYANURIC CHLORIDE
HEXAMETHYLENETETRAMINE
2,4-DIAMINO-6PHENYL-1,3,5-TRIAZINE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2933690000 | CMPDS (EXC MELAMINE) CONT AN UNFUSED TRIAZINE RING | $5.9M |
CMPDS (EXC MELAMINE) CONT AN UNFUSED TRIAZINE RING
1.8M kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
SULPHONAMIDES, NESOI
HS 293590
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
AMINO-ACIDS & ESTERS, 1 OXYGEN FUNCTION NESOI
HS 292249
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $3.4M | $25K | -$3.4M |
| Texas | $2.4M | $834K | -$1.5M |
| Michigan | $2.8M | $6K | -$2.7M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LOS ANGELES, CA | $5.3M | $162K | -$5.2M |
| NEWARK, NJ | $3.9M | $59K | -$3.9M |
| HOUSTON, TX | $3.4M | -- | -$3.4M |