Casein Protein Isolate from China
Casein protein isolate is precipitated from skim milk, yielding a slow-digesting protein powder over 90% pure used in micellar formulations for muscle recovery. HTS 3504.00.10.00 covers it as a dairy-derived protein isolate, nesoi, distinct from renneted caseins in other headings. Its application in supplements and cheese production underscores its versatility.
Duty Rate — China → United States
22.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Differentiate from unmodified caseinates with solubility and purity certificates
• Milk protein documentation required; watch for anti-dumping duties on dairy
• Ensure no therapeutic claims to avoid Chapter 30 pharmaceutical scrutiny