Flame Retardants
REACH
Dibromoneopentyl glycol
CAS Number
3296-90-0
EC Number
221-967-7
Abbreviation
DBNPG
What is Dibromoneopentyl glycol?
Dibromoneopentyl glycol (CAS 3296-90-0), abbreviated DBNPG and also known as Pentaerythritol dibromide, is a reactive brominated diol used as a flame retardant intermediate.
Where is Dibromoneopentyl glycol used?
- Polyurethane foams and rigid construction panels: reacted into the polyol component to meet building fire safety standards
- Unsaturated polyester resins for composite panels and laminates: achieves UL or EN flame classification
- Textile and leather finishing: reactive component in back-coating systems for wash-durable flame retardancy
- Adhesives, sealants and epoxy systems: co-monomer imparting flame retardant performance into the cured network
- Unlike additive flame retardants, it chemically incorporates into the polymer backbone, delivering durable fire resistance without migration or blooming.
Good to know: Unlike additive flame retardants, it chemically incorporates into the polymer backbone rather than migrating or blooming.
Commercial specifications
- Purity typically 98% or higher
- Quality confirmed by GC or titration
- Packaging in 25 kg bags, with bulk options
Other Names (Synonyms)
2,2-Bis(bromomethyl)propane-1,3-diol|2,2-BIS(BROMOMETHYL)-1,3-PROPANEDIOL|Pentaerythritol dibromide|1,3-Propanediol, 2,2-bis(bromomethyl)-|Pentaerythritol dibromohydrin|FR 1138|NCI-C55516|2,2-Dibromomethyl-1,3-propanediol|DBNPG
What are the physical properties of Dibromoneopentyl glycol?
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
How is Dibromoneopentyl glycol classified and handled safely? Learn More
Danger
GHS08· Health Hazard GHS07· Irritant
Hazard Statements
H302 Harmful if swallowed
H303 May be harmful if swallowed
H319 Causes serious eye irritation
H340 May cause genetic defects
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.
Which trade and regulatory codes apply to Dibromoneopentyl glycol?
HS Code 29055900
Storage Class 6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects
WGK (Germany) 3