2,4,6-TRIBROMOPHENOL (BROMOL)

2,4,6-TRIBROMOPHENOL
PRODUCT IDENTIFICATION
CAS NO.	118-79-6
EINECS NO.	204-278-6
FORMULA	Br₃C₆H₂OH
MOL WT.	330.82
H.S. CODE	2908.19.6000

TOXICITY	Oral rat LD50: 200 mg/kg
SYNONYMS	Tribromophenol; Bromol; Bromkal Pur 3; 三溴苯酚; Xeroform;
SMILES	c1(c(cc(Br)cc1Br)Br)O
CLASSIFICATION	Flame Retardant, Fungicide, Organobromide
EXTRA NOTES	TSCA Flag T [Subject to the Section 4 test rule under TSCA]
PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE	white to pink powder
MELTING POINT	92 - 94 C
BOILING POINT	282 - 290 C
SPECIFIC GRAVITY	2.55
SOLUBILITY IN WATER	Slightly soluble
VAPOR DENSITY	11.4
pKa	6.8 (Dissociation Constant at 20 C)
log Pow	4.13 (Octanol-water)
VAPOR PRESSURE	3.03E-04 (mmHg at 25 C)
HENRY LAW CONSTANT	3.55E-08 (atm-m3/mole at 25 C)
OH RATE CONSTANT	4.75E-13 (cm3/molecule-sec at 25 C Atmospheric )
AUTOIGNITION
NFPA RATINGS	Health: 1; Flammability: ; Reactivity: 0
REFRACTIVE INDEX
FLASH POINT	178 C
STABILITY	Stable under ordinary conditions
EXTERNAL LINKS & GENERAL DESCRIPTION
Wikipedia Linking Material Safety Data Sheet Google Scholar Search http://www.inchem.org/ The production volume of 2,4,6-tribromophenol was estimated at approximately 2,500 t/year in Japan and 9,500 t/year world-wide in 2001. This substance is produced in a closed system. This substance is used almost entirely as a chemical intermediate to make a flame retardant or directly as a flame retardant. The way to use this substance as a flame retardant is called "capping" i.e. the terminal -OH group of a polymer is capped with 2,4,6-tribromophenol which is then covalently bound to the polymer. The reaction occurs during polymerization of oxirane to form 2,4,6-tribromophenoxy-ether. Consequently, the resulting polymer becomes flame retardant/resistant. The presence of the free substance itself in the polymer would give the resin a stinking odor because of the sublimating property of the substance and the resin would not be of commercial value. The potential for release of this substance from resins “capped" with it are not higher than the potential for release of 2,4,6-tribromophenol from polymers added with flame retardants derived from this substance. Other than that, antiseptic and germicide use (e.g., in pharmaceutical prepns) is reported [Danish EPA, 2000]. However, the amount is too small to be detected by the producer of the chemical. Local: Flame retardant in epoxy, polyurethane, plastics, paper and textiles. Fire extinguishing media. 2,4,6-Tribromophenol is used also as an flame retardant in epoxy, polyurethane, plastics, paper, textiles and others. It can be combined with a synergist such as antimony trioxide for maximum flame retardant performance. Tribromophenol may also be used as an intermediate for the production of other commercial flame retardants and fire extinguishing media. It can be used as an antiseptic agent.
SALES SPECIFICATION
APPEARANCE	white to pink powder
BROMINE CONTENT	71.5% min
MELTING POINT	90 C min
LOSS ON DRYING	0.5% max
TRANSPORTATION
PACKING	25kgs in bag
HAZARD CLASS	6.1 (Packing group : III)
UN NO.	2811
GENERAL DESCRIPTION OF FLAME RETARDANT AGENT
Flame Retardant are substances that can be chemically inserted into the polymer molecule or be phisically blended in polymers after polymerization to suppress, reduce, delay or modify the propagation of a flame through a plastic materials. There are several classes of flame retardants; Halogenated Hydrocarbons (Chlorine and Bromine containing compounds and reactive flame retardants), Inorganic flame retardants ( Boron compounds, Antimony oxides, Aluminium Hydroxide, molybdenum compounds, zinc and magnesium oxides ), Phosphorous containing compounds (Organic phosphate esters, phosphates, halogenated phosphorus compounds and inorganic phosphorus containing salts).
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