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Home » Products » Flame Retardants » Halogenated Flame Retardant » EcoFlame B-627 (Tetrabromophthalic Anhydride Based Diol)

EcoFlame B-627 (Tetrabromophthalic Anhydride Based Diol)

Product: EcoFlame B-627
Equivalent Product: PHT-4 DIOL
CAS Code: 20566-35-2
Molecular Formula: C15H16O7Br4
Molecular Weight: 627.5
Chemical Structural Formula:

Features and Application
The EcoFlame B-627 is used as the intermediary retardant agent with a light amber thick liquid appearance. It is mainly used for the manufacturing of B1 and B2 type of PUR. Products with EcoFlame B-627 burns with less smoke and at less spreading speed. Hence the foam-plastic product with EcoFlame B-627 has good physical performance and low cost. It is popular as binding agent for painting layers and wovens as well as elastic materials and flame retardant PU washers.

Parameters :
Item B-627 HV B-627 LV
Indicator Test Result Indicator Test Result Indicator Test Result
Form Amber liquid Amber liquid Amber liquid Amber liquid Amber liquid Amber liquid
Bromine content ( % ) 44.0min 46.3 42.5min 43.0 42.0min 42.8
Acid value ( mgKOH/g ) 1.0max 0.86 1.00max 0.42 1.00max 0.25
Hydroxyl value ( mgKOH/g ) 150-235 208 190-265 245 210-275 260
Viscosity ( cps , 25 ℃ ) 70,000-120,000 100,000 30,000-70,000 35,000 15,000-30,000 20,000
Moisture ( % ) 0.20max 0.07 0.20max 0.07 0.20max 0.10
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