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Trichloroisocyanuric Acid Tablets (Trichlor) from Mexico

Trichloroisocyanuric acid tablets, commonly known as trichlor tablets, are pressed forms of this triazine compound used for sustained chlorine release in swimming pools and spas. Classified under HTS 2933.69.60.15 due to its explicit naming as trichloroisocyanuric acid, a pesticide for algae and bacteria control in recreational water. The tablets dissolve slowly, providing long-lasting sanitization.

Duty Rate — Mexico → United States

13.5%

Rate breakdown

9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter

Import Tips

• Tablets must meet EPA pesticide registration; include product label and MSDS showing 90%+ trichlor content

• Declare tablet weight and dimensions accurately as they affect duty calculation; watch for anti-dumping duties from certain origins

• Common error is classifying as finished pool product—ensure documentation proves pure active ingredient form