Overview
Dibromoneopentyl glycol (CAS 3296-90-0 ), commonly abbreviated as DBNPG and also known by the trade reference Pentaerythritol dibromide, is a reactive brominated diol used as a flame retardant intermediate.
Unlike additive flame retardants, it chemically incorporates into the polymer backbone, delivering durable fire resistance without migration or blooming across various polymer and coating systems.
In polyurethane foams and rigid panels for construction, DBNPG is reacted into the polyol component to meet building fire safety standards without compromising structural integrity.
Unsaturated polyester resins used in composite panels and laminates incorporate it to achieve UL or EN flame classification requirements for industrial and commercial applications.
Textile and leather finishing formulations use DBNPG as a reactive component in back-coating systems where wash-durable flame retardancy is required for high-performance materials.
In adhesives, sealants, and epoxy systems, it functions as a co-monomer that imparts flame retardant performance directly into the cured network for long-term stability.
Dibromoneopentyl glycol is supplied as a white crystalline powder. Technical and industrial grades are the standard market offering, with purity levels typically at 98% or higher.
Quality is confirmed by GC or titration to ensure consistency. Packaging is available in 25 kg bags, with bulk options for high-volume polymer and resin producers.
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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
Danger GHS08 GHS07 Hazard Statements H302 Harmful if swallowed H303 May be harmful if swallowed H319 Causes serious eye irritation H340 May cause genetic defects H341 Suspected of causing genetic defects H350 May cause cancer H351 Suspected of causing cancer H361 Suspected of damaging fertility or the unborn child H373 May causes damage to organs through prolonged or repeated exposure H413 May cause long lasting harmful effects to aquatic life Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P330 Rinse mouth. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
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
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Chemical Properties
- CAS Number
- 3296-90-0
- EC Number
- 221-967-7
- Mol. Weight
- 261.94
- HS Code
- 29055900
- Category
- Flame Retardants