2,2',6,6'-Tetraisopropyldiphenylcarbodiimide (TIPC)
2,2',6,6'-Tetraisopropyldiphenylcarbodiimide, commonly known as TIPC, is a sterically hindered aromatic carbodiimide used as a coupling agent in peptide synthesis and polymer chemistry due to its stability. It is explicitly named in HTS 2925.19.30.00 as an aromatic imide derivative, qualifying under Chapter 29 for pure, chemically defined imine-function compounds.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for similar but unnamed sterically hindered diphenylcarbodiimides
Only the two specific compounds are named; other aromatic imides go to the 'other' provision in the same subheading.
If classified based on precursor aromatic alcoholate structure
Chapter notes direct metal alcoholates or certain derivatives to alcohol headings, but pure carbodiimides remain in 2925.
If when diluted in solvent for safe transport as per Chapter 29 note (e)
Solvent-dissolved products for transport safety classify as chemical preparations if not rendered for specific use.
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Import Tips & Compliance
• Verify TSCA inventory status and pre-register if new chemical; use UN-approved packaging for flammable liquids; provide SDS with detailed reactivity hazards for CBP clearance
Related Products under HTS 2925.19.30.00
Bis(o-tolyl)carbodiimide
Bis(o-tolyl)carbodiimide is a specific aromatic imide-function compound used primarily as a dehydrating agent and coupling reagent in organic synthesis, particularly for peptide bond formation. It falls under HTS 2925.19.30.00 as one of the explicitly named aromatic imides, meeting Chapter 29 requirements for separate chemically defined organic compounds with imide functionality.
Bis(o-tolyl)carbodiimide 98% Pure Technical Grade
This technical-grade Bis(o-tolyl)carbodiimide at 98% purity is supplied for industrial organic synthesis applications like amide coupling. It remains classified under HTS 2925.19.30.00 as the named aromatic imide, as minor impurities do not exclude it from Chapter 29's chemically defined compounds.
TIPC 2,2',6,6'-Tetraisopropyldiphenylcarbodiimide Lab Grade
Lab-grade TIPC is a high-purity version of 2,2',6,6'-Tetraisopropyldiphenylcarbodiimide for research peptide synthesis, explicitly covered by HTS 2925.19.30.00 as a named aromatic imide-function compound under Chapter 29.
Bis(o-tolyl)carbodiimide with Stabilizer Additive
This form includes a stabilizer for transport stability, as permitted by Chapter 29 note (f), and is still classified as Bis(o-tolyl)carbodiimide under HTS 2925.19.30.00 since the addition is solely for preservation without specific use adaptation.