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2931.90.70.00/Ammonium Salt of 2-Phosphonobutane-1,2,4-tricarboxylic acid/Japan

Ammonium Salt of 2-Phosphonobutane-1,2,4-tricarboxylic acid from Japan

Ammonium PBTC salt provides volatility control in certain detergent and cleaning formulations where sodium salts cause residue issues. Falls under HTS 2931.90.70.00 as salt of specifically named organo-inorganic acid.

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

• Ammonium content affects hazmat shipping; declare nitrogen content for DOT classification

• Cleaning product importers should obtain TSCA certification even for formulated ammonium salts

• Distinguish from fertilizer ammonium phosphates (Chapter 31) by declaring chelating function

Ammonium Salt of 2-Phosphonobutane-1,2,4-tricarboxylic acid from Japan — Import Duty Rate | HTS 2931.90.70.00