3-Mercaptopropionic Acid from Germany
3-Mercaptopropionic acid (HSCH₂CH₂COOH) is a straight-chain organo-sulfur carboxylic acid with sulfur directly linked to carbon, falling under HTS 2930.90.4950. Excluded from sulfonated derivatives per Chapter 29 note 6; qualifies as chemically defined compound. Applications include surface modification and polymer cross-linking.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Provide FTIR spectra confirming absence of sulfonic/sulfonyl groups excluded from heading 2930
• Declare if anti-dusting agent added per Chapter 29(g); must not render product use-specific
• Verify batch purity >95% to maintain 'separate chemically defined' status