Synthetic Naphthalene Sulfonic Acid Tanning Agent
This synthetic organic tanning substance based on naphthalene sulfonic acid provides retannage and fatliquoring in leather processing. It qualifies for HTS 3202.90.50.00 as other synthetic organic tanning preparations.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pure chemical form without tanning preparation
Naphthalene sulfonates as basic organic chemicals under Chapter 29, not tanning substances.
If functioning primarily as surfactant
Surface-active preparations classified under Chapter 34 when primary use is wetting rather than tanning.
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Import Tips & Compliance
• Provide formulation details showing tanning functionality to distinguish from general sulfonated organics
• Test for biodegradability compliance with wastewater regulations
• Avoid bulk packaging that could lead to classification as industrial chemicals
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