N-Cyclohexylthiophthalimide (NTP) Rubber Accelerator
N-Cyclohexylthiophthalimide is an aromatic organo-sulfur compound used primarily as a rubber accelerator and vulcanization retarder in tire and rubber manufacturing. It features a phthalimide ring with a cyclohexyl group and sulfur linkage, fitting Chapter 29 note for organo-sulfur compounds where sulfur is directly linked to carbon. Classified under 2930.90.24.00 as a specific aromatic thiophthalimide derivative.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported pre-mixed as rubber accelerator formulation for retail/industrial sale
Blended preparations with rubber accelerators containing organo-sulfur compounds shift to Chapter 38 as chemical preparations, not pure compounds.
If classified based on heterocyclic nitrogen structure rather than sulfur function
Nucleic acids and derivatives fall under 2934, but sulfur-dominant organo-sulfur compounds take precedence per Chapter 29 classification rule to last numerical heading.
If supplied as solution in solvent for safety/transport per Chapter note (e)
Dissolved forms for transport allowed in Chapter 29 only if solvent doesn't confer specific use; otherwise, reclassified as chemical products of heading 3824.
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Import Tips & Compliance
• Verify chemical purity via Certificate of Analysis (CoA) to meet EPA import requirements; ensure SDS includes GHS classifications for hazardous materials handling
• Common pitfall: misdeclaring as general rubber chemical under 3812, leading to audits
Related Products under HTS 2930.90.24.00
High-Purity N-Cyclohexylthiophthalimide for Synthetic Rubber
This high-purity grade of N-Cyclohexylthiophthalimide serves as a nitrosamine inhibitor and retarder in synthetic rubber compounding, particularly for automotive tires. As an aromatic organo-sulfur compound with sulfur directly bonded to carbon in the thiophthalimide structure, it complies with Chapter 29 definitions excluding sulfonated derivatives. Specific subheading 2930.90.24.00 covers this exact chemical entity.
Industrial Grade N-Cyclohexylthiophthalimide Vulcanization Retarder
Industrial grade N-Cyclohexylthiophthalimide acts as a precise vulcanization retarder in natural rubber processing, controlling cross-linking for enhanced tire durability. Its aromatic structure with organo-sulfur functionality—sulfur directly linked to carbon—qualifies under heading 2930 per chapter notes, specifically named in subheading 2930.90.24.00.
NTP N-Cyclohexylthiophthalimide for Tire Manufacturing
NTP, or N-Cyclohexylthiophthalimide, is a specialty organo-sulfur accelerator used in tire manufacturing to prevent premature vulcanization and reduce nitrosamine formation. This aromatic compound matches 2930.90.24.00 as it contains sulfur directly linked to carbon atoms, per Chapter 29 notes excluding sulfonated types.
Phthalimide Derivative N-Cyclohexylthiophthalimide Chemical Intermediate
This phthalimide derivative, N-Cyclohexylthiophthalimide, serves as a chemical intermediate in organo-sulfur synthesis for rubber chemicals. Classified in 2930.90.24.00 due to its aromatic organo-sulfur nature with direct carbon-sulfur bonds, aligning with Chapter 29 provisions for separate chemically defined compounds.