HS Code for Dinonyl phthalate

Dinonyl phthalate (DNP) is classified under HS code 2917.33. This classification is determined by its chemical structure as an ester of orthophthalic acid. Specifically, it falls within Chapter 29, which covers organic chemicals, and heading 2917, which encompasses polycarboxylic acids and their derivatives. Subheading 2917.33 is explicitly reserved for dinonyl or didecyl orthophthalates. These compounds are primarily used as plasticizers in the polymer industry, particularly for polyvinyl chloride (PVC), to enhance flexibility and durability. The classification is based on the length of the alkyl chain (nine carbons for dinonyl) and the aromatic nature of the parent acid. Under the General Rules of Interpretation (GRI), specifically GRI 1, the product is classified according to the terms of the headings and any relative section or chapter notes, which in this case provide a specific line item for this chemical.

Products Included

• Dinonyl orthophthalate
• Di-n-nonyl phthalate
• Isodecyl phthalate (when meeting specific didecyl criteria)
• Didecyl orthophthalate
• Mixed dinonyl and didecyl phthalate plasticizers

Common Misclassification

Dinonyl phthalate is frequently confused with HS code 2917.32, which is reserved for dioctyl orthophthalates (DOP/DEHP). While both are phthalate plasticizers, the distinction lies in the carbon chain length of the alcohol used in esterification. It may also be confused with 2917.34, which covers other esters of orthophthalic acid like dibutyl phthalate. Accurate classification requires verifying the specific alkyl group through a technical data sheet (TDS).

FAQ

What is the HS code for Dinonyl phthalate?

The HS code for Dinonyl phthalate is 2917.33.

Is this code the same for didecyl phthalate?

Yes, HS code 2917.33 covers both dinonyl and didecyl orthophthalates as they are grouped together in the Harmonized System nomenclature.