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Fire-Resistant Coating Additive Polyglycol Phosphonate

A reactive additive for intumescent fire-resistant coatings, consisting of polyglycol esters of methylphosphonic acid. Falls under HTS 3824.92.00.00 for its precise chemical identity as polyglycol esters of methylphosphonic acid. It promotes char formation during fire exposure for protective expansion.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China5%+35.0%40%
🇲🇽Mexico5%+10.0%15%
🇨🇦Canada5%+10.0%15%
🇩🇪Germany5%+10.0%15%
🇯🇵Japan5%+10.0%15%

Alternative Classifications

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

3208.90.00Lower: 38.2% vs 40%

If pre-formulated as paint or varnish additive

Ready-to-use coating preparations containing phosphonates are classified as paints in Chapter 32.

3824.99Lower: 15% vs 40%

If for other industrial chemical specialties not specifically listed

Unnamed chemical preparations default to the residual 3824.99 provisions.

3809.92.50Higher: 41% vs 40%

If used in finishing agents with specific pesticide-like properties

Certain phosphonate finishing agents may fall under 3809 if they meet subheading criteria.

Not sure which classification is right?

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Import Tips & Compliance

Include end-use statements for coatings to support classification and avoid paint additive scrutiny

Ensure NFPA fire testing certifications accompany shipments for regulatory validation

Distinguish from generic coating preparations in 3208/3209 via chemical specification

Related Products under HTS 3824.92.00.00

Polyglycol Ester of Methylphosphonic Acid Flame Retardant

This is a specific polyglycol ester of methylphosphonic acid used as a flame retardant additive in polyurethane foams and plastics. It falls under HTS 3824.92.00.00 because it is explicitly classified as polyglycol esters of methylphosphonic acid, a chemical preparation not elsewhere specified. These compounds provide fire resistance by releasing non-flammable gases when exposed to heat.

Antifoam Additive Based on Polyglycol Methylphosphonate

An industrial antifoam agent composed of polyglycol esters of methylphosphonic acid for use in chemical manufacturing and wastewater treatment. Classified under HTS 3824.92.00.00 due to its specific chemical structure as polyglycol esters of methylphosphonic acid. It controls foam formation in processing by altering surface tension.

Polyglycol Methylphosphonate Plasticizer for Polymers

A plasticizing agent derived from polyglycol esters of methylphosphonic acid, used to enhance flexibility in PVC and other polymers. It is specifically covered by HTS 3824.92.00.00 as polyglycol esters of methylphosphonic acid preparations. This additive improves processability without compromising flame retardancy.

Polyglycol Methylphosphonate Hydraulic Fluid Stabilizer

Chemical stabilizer for synthetic hydraulic fluids based on polyglycol esters of methylphosphonic acid, enhancing thermal stability. Classified precisely under HTS 3824.92.00.00 as these specific esters. Prevents degradation in high-pressure fluid systems.

Phosphonate-Based Polyglycol Surfactant for Detergents

Specialty surfactant incorporating polyglycol esters of methylphosphonic acid for industrial detergent formulations. HTS 3824.92.00.00 applies directly to these named chemical esters used in cleaning preparations. Provides wetting and dispersing properties with flame retardant bonus.

Flame Retardant Concentrate 75% Polyglycol Phosphonate

High-concentration (75%) masterbatch of polyglycol esters of methylphosphonic acid for compounding into thermoplastics. Specifically named under HTS 3824.92.00.00 for these phosphonate esters. Enables efficient flame retardancy in injection molding applications.