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HSChapter 32
U.S. imports of vat dyes and preparations based thereon (HS 320415) totaled $1.1M in May 2026, traded with 8 countries.
Importers of Vat Dyes and Preparations Based Thereon paid $240K in duties in May 2026 — an effective duty rate of 21% on $1.1M in dutiable value, based on actual customs collections rather than the published tariff schedule. Vat Dyes and Preparations Based Thereon imports of $1.1M in May 2026 ran 72% above the year-to-date monthly average of $650K.
Last updated: May 2026 dataVat dyes achieve exceptional wash and lightfastness on cellulosic fibers through a reduction-oxidation dyeing process, making them the preferred colorant for denim, workwear, and industrial textiles. Synthetic indigo — classified as Vat Blue 1 under line 3204151000 — is commercially the most significant product in this heading, while solubilized vat dyes (3204153000) serve specialty printing applications. India and China together account for the bulk of US import volume, reflecting their dominant roles in both indigo and anthraquinone-based vat dye production.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Synthetic indigo is specifically enumerated as Vat Blue 1 under HTS line 3204151000. Importers should confirm the Colour Index designation on the supplier's technical documentation; indigo in forms not meeting that specification may fall under a different line within 320415 or even a different heading depending on its chemical form.
Standard vat dyes are insoluble in water and require alkaline reduction before application, while solubilized vat dyes are water-soluble sulfuric acid esters of the leuco form, used mainly in printing pastes. The US schedule separates solubilized vat dyes into line 3204153000, so the physical and chemical form of the product determines which line applies.
Monthly import values over time
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HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3204158000 | VAT DYES & PREPS BASED THEREON,NESOI | $331K | 22.95% | 100.00% | $76K |
| 3204151000 | VAT DYES & PREPS, VAT BLUE 1 (SYNTHETIC INDIGO) | $121K | 20.33% | 100.00% | $25K |
| 3204153000 | VAT DYES & PREPS, SOLUBIZED VAT BLUE 5,ETC | $34K | 16.50% | 100.00% | $6K |
| 3204152000 | VAT DYES & PREPS, VAT BROWN 3, ETC | $3K | 16.51% | 100.00% | $454 |
| 3204152500 | VAT RED 1 | $0 | -- | -- | -- |
| 3204154000 | VAT DYES & PREPS,DESCRIBED IN ADD U.S. NOTE 3, SEC | $0 | -- | -- | -- |
VAT DYES & PREPS BASED THEREON,NESOI
VAT DYES & PREPS, VAT BLUE 1 (SYNTHETIC INDIGO)
VAT DYES & PREPS, SOLUBIZED VAT BLUE 5,ETC
VAT DYES & PREPS, VAT BROWN 3, ETC
VAT RED 1
VAT DYES & PREPS,DESCRIBED IN ADD U.S. NOTE 3, SEC
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3204150000 | VAT DYES & PREPARATIONS BASED THEREON | $78K |
VAT DYES & PREPARATIONS BASED THEREON
6.7K kg
MASTICS; PAINTERS' FILLINGS
HS 321410
PIGMNTS/PREPS CONT =>80% TITANIUM DIOXIDE, DRY WT
HS 320611
PRINTING INK, OTHER THAN BLACK
HS 321519
COLORING MATTER OF VEGETABLE OR ANIMAL ORIGIN
HS 320300
PIGMENTS & PREPARATIONS BASED THEREON
HS 320417
PAINTS & VARNISHES,IN NONAQUEUS MEDIUM,NESOI
HS 320890
| State | Imports | Exports | Balance |
|---|---|---|---|
| South Carolina | $322K | $6K | -$315K |
| Illinois | $62K | -- | -$62K |
| North Carolina | $41K | $19K | -$22K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHARLESTON, SC | $275K | -- | -$275K |
| NORFOLK-NEWPORT NEWS, VA | $62K | -- | -$62K |
| LAREDO, TX | $59K | -- | -$59K |