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2835.31.00.00/Sodium Tripolyphosphate for Water Treatment/Japan

Sodium Tripolyphosphate for Water Treatment from Japan

STPP for boiler water treatment sequesters scale-forming ions to prevent corrosion. It is chemically defined sodium triphosphate under HTS 2835.31.00.00 in polyphosphates subheading.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• EPA registration under FIFRA if sold as pesticide/anti-fouling; otherwise TSCA

• Specify dosage rates in technical data sheet