Phenyl Isothiocyanate from Mexico
Phenyl isothiocyanate (C6H5NCS) contains a phenyl group attached to an isothiocyanate (-N=C=S) functionality, qualifying as an aromatic organo-sulfur compound. It imports under HTS 2930.90.2900 as 'Other' aromatic not specified elsewhere. Primarily used in analytical chemistry for derivatizing amines in HPLC.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include end-use statement specifying analytical reagent use to prevent reclassification as Chapter 38 laboratory reagents
• Provide toxicity data; highly lachrymatory and requires specific UN 2670 shipping classification
• Confirm >98% purity to qualify as chemically defined compound per chapter note (a)