3-Methyl-5-Pyrazolone Powder
Pure 3-Methyl-5-pyrazolone is a heterocyclic compound featuring an unfused pyrazole ring with a methyl group at position 3, classified under HTS 2933.19.70.00 as a nitrogen-heterocyclic compound containing a pyrazole ring structure. It serves as a key intermediate in organic synthesis for dyes and pharmaceuticals.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing additional substituents beyond 3-methyl
Other heterocyclic compounds with nitrogen hetero-atoms only fall under this broader category if not specifically pyrazole-based.
If pre-mixed as synthetic dye intermediate for retail
Mixtures of synthetic organic coloring matter are classified in Chapter 32 when prepared for dye production.
If imported as stabilized mixture with solvents for safety
Chemical preparations not elsewhere specified go to 3824 if additives render it a formulated product.
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Import Tips & Compliance
• Provide Certificate of Analysis (COA) confirming 99%+ purity and pyrazole structure to avoid reclassification
• Ensure proper Hazard Communication labeling as it may be irritant; comply with TSCA for US chemical import
• Declare exact CAS number (108-49-6) on entry documents to prevent customs holds
Related Products under HTS 2933.19.70.00
3-Methyl-5-Pyrazolone Technical Grade
Technical grade 3-Methyl-5-pyrazolone (98% purity) is used in industrial dye manufacturing and classified under HTS 2933.19.70.00 due to its unfused pyrazole ring structure. This compound is a fundamental building block for azo dye synthesis.
3-Methyl-5-Pyrazolone Flake Form
3-Methyl-5-pyrazolone in flake form for easier handling in pharmaceutical intermediate production falls under HTS 2933.19.70.00. Its classification stems from the core unfused pyrazole ring meeting Chapter 29 note requirements for pure heterocyclic compounds.
High Purity 3-Methyl-5-Pyrazolone 99.5%
Ultra-high purity 3-Methyl-5-pyrazolone (99.5%) for advanced pharmaceutical synthesis is classified under HTS 2933.19.70.00. This specification confirms its status as a separate chemically defined organic compound with pyrazole ring per Chapter 29.
3-Methyl-5-Pyrazolone Dye Coupler Grade
Specialty grade 3-Methyl-5-pyrazolone optimized as dye coupler in azo pigment production falls under HTS 2933.19.70.00. Its pure pyrazole structure distinguishes it from formulated dye products excluded by Chapter 29 notes.
3-Methyl-5-Pyrazolone with Stabilizer
3-Methyl-5-pyrazolone containing added stabilizer for transport preservation is classified under HTS 2933.19.70.00 per Chapter 29 note (f). The stabilizer does not alter its primary pyrazole ring classification.
Industrial 3-Methyl-5-Pyrazolone Drums
Bulk 3-Methyl-5-pyrazolone packaged in 25kg fiber drums for industrial dye manufacturing is under HTS 2933.19.70.00. Classification follows the pure heterocyclic compound regardless of industrial packaging.