Fire-Resistant Coating Additive Polyglycol Phosphonate from Canada
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.
Duty Rate — Canada → United States
15%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• 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