Product Introduction
Dibromoneopentyl Glycol contains 60% fatty bromine and provides a more effective flame retardant effect after use.It is a brominated derivative of pentaerythritol, with a bifunctional group and a symmetrical structure.
Product Properties
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Product Name： |
Dibromoneopentyl Glycol |
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Other Name: |
2,2-Bis(bromomethyl)propane-1,3-diol ,DBNPG; FR-522 |
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CAS No.： |
3296-90-0 |
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Molecular Formula: |
C5H10O2B2 |
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Structural formula: |
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Product Index
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Item |
Test result |
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Appearance |
White crystalline powder |
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Purity % |
≥99% |
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Melting point ℃ |
≥110℃ |
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Color (APHA) |
≤20APHA |
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Bromine content |
60% |
Product Application
Dibromoneopentyl Glycol is a reactive flame retardant used in rigid polyurethane foam, resins, coatings, and other polymer materials. Its high bromine content and ease of binding with polyurethane make it especially suitable for rigid polyurethane foam. It is also increasingly used in CFC-free foam systems to enhance their flame retardant rating.
Product Packaging & Storage
Packaging:
The product can be packaged in 25 kg woven bags, 25 kg kraft paper bags, or bulk bags, depending on customer requirements.
Storage:
It should be stored in a dry, well-ventilated area, and the container must remain sealed. Keep away from heat sources, sparks, and open flames. Store away from incompatible substances. Follow proper storage practices for stacking, bundling, shrink wrapping, and/orpiling.
FAQ
Q: What is the molecular formula of 2,2-Bis(bromomethyl)propane-1,3-diol?
A: The molecular formula is C₅H₁₀Br₂O₂. It is a 1,3-propylene glycol derivative containing two bromomethyl groups.
Q: What are the main uses of 2,2-Bis(bromomethyl)propane-1,3-diol?
A: It is an important reactive flame retardant that effectively enhances the flame retardant properties of materials, particularly in unsaturated polyester resins, thermoplastic resins, and polyurethane resins. It is also used as an intermediate in organic synthesis.
Q: How is DBNPG produced?
A: The production process involves the reaction of pentaerythritol with a 40% hydrobromic acid solution in the presence of acetic acid, using electric agitation and heating under reflux conditions for 6 to 8 hours. Afterward, water and unreacted hydrogen bromide are removed by reducing the pressure, and the final product is processed through mixing, filtration, recrystallization, decolorization, and vacuum drying.
Q: Is the product subject to environmental regulations?
A: As a brominated flame retardant, It may be subject to regional or international environmental regulations, such as the European Union's REACH regulation. It is important to comply with local environmental regulations during its use and disposal.
Q: What is the purity of the product and the common packaging specifications?
A: Dibromoneopentyl glycol typically has a purity of 99% (HPLC). Common packaging sizes include 1 kg, 5 kg, and 25 kg, with some suppliers also offering 25 kg cardboard drum packaging.
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