Dibromoneopentyl glycol
CAS 3296-90-0
EC 221-967-7
Formula C5H10Br2O2
MW 261.94 g/mol
Flame Retardants Plastics & PolymersCoatings, Adhesives, Sealants & ElastomersTextile, Leather & PaperBuilding & Construction Flame RetardancyPreservation & Biocide
Description
Dibromoneopentyl glycol (CAS 3296-90-0), also known commercially as FR 522, FR 1138, and SAYTEX FR-1138, is a brominated diol flame retardant with the molecular formula C5H10Br2O2. It carries no assigned E-code and is classified under HS code 29055900. The compound is also referenced as Pentaerythritol Dibromide or Pentaerythritol dibromohydrin.
In polyurethane foams and rigid polymer systems, dibromoneopentyl glycol acts as a reactive flame retardant, incorporating directly into the polymer backbone to deliver durable, non-migratory fire resistance. It is also applied in textile back-coatings and construction laminates, where bromine radical release during combustion interrupts the flame propagation chain. Secondary antimicrobial functionality supports use in treated paper and leather substrates.
The material is supplied as a solid and is subject to REACH registration requirements within the European Economic Area. Procurement teams should confirm supplier SDS documentation and substance compliance status prior to formulation. Standard industrial packaging formats apply; consult your supplier for available lot sizes and grade specifications.
In polyurethane foams and rigid polymer systems, dibromoneopentyl glycol acts as a reactive flame retardant, incorporating directly into the polymer backbone to deliver durable, non-migratory fire resistance. It is also applied in textile back-coatings and construction laminates, where bromine radical release during combustion interrupts the flame propagation chain. Secondary antimicrobial functionality supports use in treated paper and leather substrates.
The material is supplied as a solid and is subject to REACH registration requirements within the European Economic Area. Procurement teams should confirm supplier SDS documentation and substance compliance status prior to formulation. Standard industrial packaging formats apply; consult your supplier for available lot sizes and grade specifications.
Physical Properties
| Melting Point | 111-113 °C |
| Boiling Point | 235°C (rough estimate) |
| Density | 1.8049 (rough estimate) |
| Color | White to Off-White |
| Form | Solid |
| Water Solubility | 19.4g/L at 20℃ |
| Vapor Pressure | 10 mm Hg ( 178 °C) |
| Refractive Index | 1.5120 (estimate) |
| Log P | 1.08 |
Safety & Handling (Learn More)
Danger GHS08 GHS07
H
H302H303H319H340H341H350H351H361H373H413
P
P203P260P264P270P273P280P318P319P330P405P501P264+P265P301+P317P337+P317P305+P351+P338
Trade & Regulatory
| HS Code | 29055900 |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
| WGK (Germany) | 3 |
Other Names
2,2-bis(bromomethyl)propane-1,3-diolPentaerythritol DibromideDBNPGFR 522FR 1138SAYTEX FR-1138Pentaerythritol dibromohydrinSAYTEX(R) FR-1138 FLAME RETARDANT
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Raw Materials
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