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

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

The tetrasodium salt of PBTC is the most common commercial form, offering better water solubility for cooling water treatment and scale inhibition applications. Classified with parent acid under HTS 2931.90.70.00 per Chapter 29 inorganic salt classification rules.

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

• Specify neutralization degree (mono-, di-, tetra-sodium) as all classified identically but affects solubility declarations

• pH and active content analysis required for water treatment chemicals entering TSCA inventory

• Avoid bulk aqueous solutions >50% water which may trigger 'dissolved in water' exclusions per Chapter 29 note 1(d)

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