N,N-Di(n-propyl)aminoethanethiol Hydrochloride from China
Protonated salt form of N,N-di(n-propyl)aminoethane-2-thiol hydrochloride. Explicitly covered under HTS 2930.90.92.22 which includes protonated salts of specified aminoethane-2-thiols (excluding dimethyl/diethyl). Used in aqueous formulations for biochemical research.
Duty Rate — China → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Specify salt counterion in COA; hydrochloride typical but others qualify if protonated
• Declare pH stability data; salts more stable than free base for import handling
• Segregate from oxidizers in shipping; thiols highly reactive even in salt form