Dimethyl Benzylidene Sorbitol (DMDBS)
Dimethyl benzylidene sorbitol, chemically Bis-O-[(4-methylphenyl)methylene]-D-glucitol, is an aromatic heterocyclic compound with oxygen hetero-atoms used as a nucleating agent in polypropylene plastics. It falls under HTS 2932.99.55.00 as a specifically named aromatic heterocyclic compound with oxygen hetero-atoms only. This white crystalline powder enhances clarity and crystallization rate in thermoplastics.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as formulated masterbatch with polypropylene carrier
Mixtures containing >2% of this compound with polymers classified as chemical preparations in Chapter 38 rather than pure compounds.
If chemically modified as sugar acetal derivative beyond the named structure
Sugar acetals and derivatives fall under heading 2940, taking precedence over general heterocyclic classification.
If imported as synthetic alcohol derivative for non-plastics use
Certain synthetic polyhydric alcohols classified earlier in Chapter 29 based on principal alcohol function.
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Import Tips & Compliance
• Provide chemical analysis certificates confirming identity as Bis-O-[(4-methylphenyl)methylene]-D-glucitol to avoid misclassification
• Ensure packaging meets UN standards for organic chemicals (potential 9 UN number) with proper hazard labeling
• Declare purity levels (>98% typical) as impurities may affect classification eligibility under Chapter 29 note (a)
Related Products under HTS 2932.99.55.00
Rhodamine 2C Base
Rhodamine 2C base is a fluorescent dye intermediate, specifically listed under HTS 2932.99.55.00 as an aromatic heterocyclic compound with oxygen hetero-atoms. This chemical serves as the core structure for producing rhodamine dyes used in textiles, inks, and biological staining. Its classification reflects its oxygen-containing heterocyclic ring structure.
Millad 3988 Nucleating Agent
Millad 3988 is the commercial grade of Dimethyl benzylidene sorbitol (DMDBS) used by plastics manufacturers as a clarifying nucleating agent. Classified under HTS 2932.99.55.00 due to its specific chemical identity as the named aromatic heterocyclic compound. Supplied as >99% pure white powder for injection molding applications.
Rhodamine 2C Base (CAS 477-73-6)
Laboratory-grade Rhodamine 2C base (CAS 477-73-6) specifically enumerated under HTS 2932.99.55.00 for its aromatic oxygen-heterocyclic structure. Used in synthesis of laser dyes and fluorescent probes for microscopy. Packaged in 25g-1kg quantities for R&D applications.