Persulfate Mixture for Polymerization from Mexico
Technical grade blend of ammonium and sodium persulfates for initiating acrylic emulsion polymerization. Still classified HTS 2833.40.60.50 as 'other' peroxosulfates if chemically defined and predominant. Meets Chapter 28 purity standards when not prepared mixtures.
Duty Rate — Mexico → United States
13.1%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Blend ratio documentation essential; >90% persulfates keeps in 2833.40 vs 3824
• Specify 'for industrial polymerization use only' to avoid consumer prep reclass
• TSCA declaration for new chemical substances if novel blend