Santicizer 141 Plasticizer
Santicizer 141, chemically bis(1-methylpentyl) methylphosphonate, functions as a phosphate ester plasticizer for PVC and other polymers, classified under HTS 2931.49.00.25 due to its organo-phosphorus structure with P-C bonds. It provides flexibility and flame retardancy in flexible films and coatings.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If considered a phosphoric acid ester without direct P-C bonding emphasis
Phosphoric esters lacking strong organo-inorganic character may classify under oxygen-function phosphorus compounds.
If when supplied pre-formulated as flame-retardant additive composition
Prepared chemical compositions for specific rubber/plastic use fall under chapter 38 rather than pure compounds.
If technically classified among triaryl phosphites instead of alkyl phosphonates
Specific statistical suffixes distinguish phosphite vs phosphonate derivatives within non-halogenated organo-phosphorus.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Label containers with exact chemical name and CAS number (CAS 25550-93-6) to match HTS 2931.49.00.25 specifications
• Provide end-use statement if used in food-contact applications to address FDA regulations alongside tariff classification
• Avoid bulk mixtures; pure compound import prevents reclassification to higher-duty mixture headings
Related Products under HTS 2931.49.00.25
Bis(1-methylpentyl) Methylphosphonate
Bis(1-methylpentyl) methylphosphonate is a non-halogenated organo-phosphorus compound featuring phosphorus directly linked to carbon atoms, classified under HTS 2931.49.00.25 as a specific organo-inorganic derivative. It serves as a chemical intermediate in synthesis and has applications in flame retardants and plasticizers.
Flame Retardant P-141
Flame Retardant P-141 is bis(1-methylpentyl) methylphosphonate used in polyurethane foams and textiles for fire safety, falling under HTS 2931.49.00.25 as a non-halogenated organo-phosphorus compound. Its P-C bonded structure qualifies it as an organo-inorganic derivative per chapter notes.
Phosphonate Plastic Additive 141
Phosphonate Plastic Additive 141, identified as bis(1-methylpentyl) methylphosphonate, enhances PVC plastisol flexibility and acts as a secondary plasticizer, classified precisely under HTS 2931.49.00.25. The direct phosphorus-carbon linkage defines its organo-inorganic status.