Congo Red Direct Red 83 Analytical Grade from China
Congo Red (Direct Red 83) analytical grade is high-purity dye used as pH indicator (red at pH 3-5, blue above 5) and amyloid stain in microscopy. Despite lab use, classified as the synthetic organic coloring matter under HTS 3204.14.25.00. Supplied at 85% dye content minimum.
Duty Rate — China → United States
44%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Include intended use declaration; lab dyes still classify by chemistry, not end-use
• Restricted under Toxic Substances Control Act; pre-notice may apply for first import
• Batch certificates must specify CI 22120 to avoid generic 3204.19 classification