Rochelle Salt Pharmaceutical Grade from Mexico
High-purity potassium sodium tartrate meeting USP standards for use in pharmaceutical formulations and as a sequestrant. Classified under HTS 2918.13.3000 as the specific salt of tartaric acid per the tariff description. Its dihydrate crystal structure provides mild laxative and buffering properties in medicinal products.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide USP/EP certificate of analysis; pharmaceutical grade requires heavy metal limits below 10 ppm
• Label with batch number, expiry date, and 'For Pharmaceutical Use Only' to avoid food chemical classification