Dinonyl Orthophthalate (DNOP)
Dinononyl orthophthalate (DNOP) is an aromatic polycarboxylic acid ester classified under HTS 2917.33.0050 as 'other' dinonyl orthophthalates. It serves as a plasticizer for PVC and other polymers, providing flexibility and durability to plastics used in industrial applications. The chemical structure features two nonyl alcohol chains esterified with orthophthalic acid, meeting the specific heading requirements.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If mixture contains mixed alkyl chains beyond dinonyl specification
Products with non-specific or mixed phthalate esters fall under general aromatic esters rather than the precise dinonyl subcategory.
If when imported as formulated plasticizer mixture with additives
Chemical preparations containing multiple plasticizers or stabilizers are classified as mixtures in Chapter 38, not pure compounds.
If for technical grade with high solvent content
If dissolved in petroleum solvents exceeding transport thresholds, may classify as synthetic lubricants rather than pure chemical compound.
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Import Tips & Compliance
• Provide detailed chemical composition certificates (COA) confirming dinonyl orthophthalate content to avoid reclassification as general phthalates
• Ensure REACH and TSCA compliance documentation; include safety data sheets (SDS) showing industrial plasticizer use, not consumer applications
• Avoid common pitfalls by verifying purity levels (>95%) as impurities may trigger classification under broader 2917.39 headings
Related Products under HTS 2917.33.00.50
Didecyl Orthophthalate (DDOP) Plasticizer
Didecyl orthophthalate (DDOP) is a high-performance plasticizer for flexible PVC applications, specifically classified under HTS 2917.33.0050 as 'other' didecyl orthophthalates. Derived from orthophthalic acid esterified with decyl alcohol, it provides excellent low-temperature flexibility and electrical properties. Used primarily in wire insulation and cable sheathing.
Mixed Dinonyl/Didecyl Orthophthalate (DNDP)
Mixed dinonyl/didecyl orthophthalate (DNDP) blends are classified under HTS 2917.33.0050 as 'other' within the dinonyl/didecyl orthophthalate category. These plasticizers combine C9 and C10 alcohol chains for optimized performance in flooring and wall coverings. The aromatic polycarboxylic structure ensures classification specificity.
Purified Dinonyl Orthophthalate 99% Technical Grade
High-purity 99% dinonyl orthophthalate technical grade is classified under HTS 2917.33.0050 for other dinonyl orthophthalates. Used in specialty polymer compounding requiring minimal impurities, this aromatic diester provides superior gelling properties. Distillation purification ensures compliance with heading specifications.
Didecyl Orthophthalate Low-Volatility Grade
Low-volatility didecyl orthophthalate grade for automotive interior PVC is classified under HTS 2917.33.0050. This specialized plasticizer maintains performance at high temperatures without migration. The purified C10 diester meets strict automotive specifications.