Tetramethylguanidine with Stabilizer
Stabilized tetramethylguanidine containing BHT preservative for transport, classified HTS 2925.29.70.00 per Chapter 29 note (f). Remains chemically defined imine compound. Used in fine chemical manufacturing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for bulk chemical preparations
Preparations not qualifying under Chapter 29 notes become Chapter 38 mixtures.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document stabilizer as necessary for preservation per note (f); excess may trigger note (g)
• Include formulation certificate showing <1% additives
• Avoid coloring/emetic additions unless for safety identification
Related Products under HTS 2925.29.70.00
Tetramethylguanidine (TMG)
Tetramethylguanidine is a strong organic base classified under HTS 2925.29.70.00 as an imine-function compound and derivative. It features a guanidine structure with four methyl groups, making it a chemically defined compound fitting Chapter 29 note (a). Primarily used as a catalyst in chemical synthesis.
99% Pure Tetramethylguanidine
High-purity tetramethylguanidine (99%) used in pharmaceutical intermediate synthesis, classified under HTS 2925.29.70.00 as a separate chemically defined imine derivative. Meets Chapter 29 requirements for organic compounds without excluded additives. Common in organic catalysis applications.
Industrial Grade Tetramethylguanidine
Tetramethylguanidine in industrial grade (95-98% purity) for use as catalyst in polymerization reactions, under HTS 2925.29.70.00. Qualifies as chemically defined organic imine per Chapter 29 scope, with minor impurities allowed. Key in polyurethane production.
Pharma-Grade Tetramethylguanidine Base
Pharmaceutical-grade tetramethylguanidine meeting USP standards, under HTS 2925.29.70.00 as imine derivative. Chemically defined for drug synthesis intermediates. Excludes immunological products per chapter note.