SAYTEX® RB-79 flame retardant is a stable, reactive bromine-containing diester/ether diol of tetrabromophthalic anhydride. The nominal structure of SAYTEX RB-79 flame retardant is a mixed ester of tetrabromophthalic anhydride with diethylene glycol and propylene glycol. It is used in reactive diol for rigid polyurethane foam and urethane elastomers and coatings.

Functions: Flame Retardant, Smoke Suppressant

Chemical Family: Brominated Compounds, Diols, Halogenated Compounds

Compatible Polymers & Resins: Polyurethanes (PU)

Technical Data Sheet
  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Plastics & Elastomers Functions
EINECS No.
2438850
EUCAS
20566-35-2
CAS No.
77098-07-08

Features & Benefits

Features
  • Reactive diol
  • High bromine content
  • Scorch resistant

Applications & Uses

Compatible Polymers & Resins

Properties

Physical Form
Appearance
Amber
Soluble in
Acetone, Toluene
Typical Properties
ValueUnitsTest Method / Conditions
Acid Numbermax. 0.25mg KOH/g
Bromine45wt. %
Bulk Density15.02lb/gal³
Water Solubility (25°C)max. 0.1wt. %
Viscosity (60°C)1400 - 2100cP
Viscosity (25°C)80000 - 135000cP
TGA (90% weight loss)400°C
TGA (50% weight loss)355°C
TGA (5% weight loss)165°C
TGA (10% weight loss)210°C
TGA (1% weight loss)107°C
Specific Gravity1.8
Molecular Formula (Theoretical)C₁₅H₁₆O₇Br₄
Methanol Solubility (25°C)max. 0.1wt. %
Hydroxyl Number200 - 235mg KOH/g
HFO 1233zd(E) Solubility (25°C)max. 1.0wt. %
HFC 245fa Solubility (25°C)23wt. %
Water Contentmax. 0.2wt. %
HCFC 141b Solubility (25°C)6wt. %

Regulatory & Compliance

Chemical Inventories

Packaging & Availability

Regional Availability
  • Africa
  • Asia Pacific
  • Europe
  • Latin America
  • North America