Section VI — Products of the chemical or allied industries
Chapter 29 — Organic chemicals
Heading 2931 — Other organoinorganic compounds.
National subdivision 2931.4 — Nonhalogenated organophosphorous derivatives:
Subheading 2931.48 — 3,9Dimethyl2,4,8,10tetraoxa3,9diphosphaspiro[5.5] undecane 3,9dioxide
HS code
2931.48.00
3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5] undecane 3,9-dioxide
Last Verified Date - 1 October 2026
Common commodities
Pure Spiro Phosphonate Flame Retardant PrecursorDiphosphaspiro Undecane Dioxide for Fire Resistant MaterialsSpirophosphonate Organo-Phosphorous Derivative (293148)Flame Retardant Precursor: 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5] undecane 3,9-dioxideIndustrial Grade Diphosphaspiro Undecane DioxidePure Phosphorus Compound for Flame Retardant Applications (293148)Solids for Synthesis: 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5] undecane 3,9-dioxideOrgano-Phosphorous Derivative (293148) for Fire Safety SolutionsPure Diphosphaspiro Undecane Dioxide: Flame Retardant PrecursorFlame Resistant Chemical: 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5] undecane 3,9-dioxide