SAYTEX® RB-49 Flame Retardant

CAS Number: 632-79-1

Tetrabromophthalic Anhydride SAYTEX RB-49 flame retardant, tetrabromophthalic anhydride, is an additive or reactive intermediate containing aromatic bromine.

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Physical and Chemical Properties

Property Value

IUPAC Name

4,5,6,7-tetrabromo-2-benzofuran-1,3-dione

Molecular Weight

463.70g/mol

Appearance

Powder

Color

White

Specific Gravity

2.91

Bulk Density

Packed: 99 [1586]; Aerated: 72 [1153]

Solubility in Water

<0.01 (weight % at 25 °C)

Solubility in Other Solvents

Acetone: 2.5 (at 25 °C)
Methanol: 2.9 (at 25 °C)
Toluene: 5.1 (at 25 °C)
Ethylene Glycol: 1.0 (at 25 °C)
Propylene Glycol: 1.0 (at 25 °C)
Styrene: 8.1 (at 25 °C)

Additional Properties

% Bromine (theoretical): 68.9; Average particle size (µm): 76; Refractive index: 1.83

Applications

SAYTEX RB-49 flame retardant is designed as a reactive intermediate for use in unsaturated or saturated polyesters, polyols, esters and imides. Additional information on the use of SAYTEX RB-49 flame retardant may be found in various technical bulletins, which are available from Albemarle. These properties are typical but do not constitute a

Features

SAYTEX RB-49 flame retardant is a highly efficient reactive aromatic bromine source. In some cases SAYTEX RB-49 flame retardant’s derivatives can be substituted for higher bromine-containing flame retardants on an equal weight % basis rather than an equal % bromine basis. SAYTEX RB-49 flame retardant allows for the highest level of bromine to be reacted into unsaturated polyesters at comparable monomer levels.

Specifications

Refractive index 1.83
Solubility in: (wt. % at 25°C)
Water <0.01
Acetone 2.5
Methanol 2.9
Toluene 5.1
Ethylene Glycol <1.0
Propylene Glycol <1.0
Styrene 8.1
TGA (TA Instrument model 2950, 10°C/min,
under N2)
1% weight loss, °C 217
5% weight loss, °C 244
10% weight loss, °C 256
50% weight loss, °C 289
90% weight loss, °C 301

Handling Instructions

Transportation Classification Not regulated for transportation Harmonized tariff number 2917.39 and minimum order information is available from sales or customer service.

Legal Disclaimer

The information presented herein is believed to be accurate and reliable but is presented without guarantee or responsibility on the part of Albemarle Corporation and its subsidiaries and affiliates. It is the responsibility of the user to comply with all applicable laws and regulations and to provide for a safe workplace. The user should consider any health or safety hazards or information contained herein only as a guide and should take those precautions which are necessary or prudent to instruct employees and to develop work practice procedures in order to promote a safe work environment. Further, nothing contained herein shall be taken as an inducement or recommendation to manufacture or use any of the herein materials or processes in violation of existing or future patent.