p-Phenylenediamine Sulfate from Mexico
p-Phenylenediamine sulfate is the salt form used in oxidative hair dyes and rubber accelerator production. HTS 2921.59.80.90 classification follows Chapter 29 salt rule placing it with parent aromatic polyamine. Para positioning provides specific reactivity profile.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Cosmetic-grade material requires FDA compliance verification and impurity limits
• Include sulfate content analysis to confirm exact amine equivalent weight
• Allergen warning labeling mandatory for consumer product applications