Antiblaze 182 Flame Retardant

Antiblaze 182 is a registered trademark for bis(polyoxyethylene) methylphosphonate in primary form, specifically for textile and paper coatings. HTS 3907.21.00.00 applies due to its precise chemical identification as the named polyether. Provides reactive flame retardancy without migration.

Import Duty Rates by Country of Origin

Origin Country	MFN Rate	Ch.99 Surcharges	Total Effective Rate
🇨🇳China	6.5%	+25.0%	31.5%
🇲🇽Mexico	6.5%	—	6.5%
🇨🇦Canada	6.5%	—	6.5%
🇩🇪Germany	6.5%	—	6.5%
🇯🇵Japan	6.5%	—	6.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3907.29.00.00Higher: 41.5% vs 31.5%

If other unsaturated polyethers

Different ether structures use 'Other' polyethers subheading.

2835.29Lower: 14.1% vs 31.5%

If phosphonate salts

Salt forms rather than esters shift to inorganic chemicals chapter.

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Import Tips & Compliance

• Include commercial invoice specifying 'bis(polyoxyethylene) methylphosphonate CAS [number]' for verification

• Ensure DOT hazardous material declaration for Class 9 liquids

• Avoid bulk packaging declarations that suggest Chapter 38 mixtures

Related Products under HTS 3907.21.00.00

Bis(polyoxyethylene) methylphosphonate (BPEMP)

Bis(polyoxyethylene) methylphosphonate is a specific polyether compound classified under HTS 3907.21.00.00 due to its chemical structure as a phosphonate ester of polyoxyethylene chains. It is primarily used as a flame retardant additive in plastics, textiles, and coatings. This primary form polymer meets the subheading note requiring the named structure to predominate by weight.

Phosflex 71B Flame Retardant

Phosflex 71B is a commercial grade bis(polyoxyethylene) methylphosphonate used as a low-viscosity reactive flame retardant. It falls under HTS 3907.21.00.00 as it matches the specific polyether phosphonate structure in primary liquid form. Commonly incorporated into polyurethane foams and coatings during manufacturing.

TEP-Enhanced BPEMP Polyether

This is a triethyl phosphate-modified bis(polyoxyethylene) methylphosphonate formulation maintaining >95% named polymer content. Classified under 3907.21.00.00 per subheading note (a)(1) as the core monomer units predominate. Used in flexible PU foams for furniture and automotive applications.