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Methyltriphenylphosphonium bromide CAS# 1779-49-3

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Chemical Name:Methyltriphenylphosphonium bromide

CAS No：1779-49-3

Molecular Formula:C19H18BrP

Molecular weight:357.22

Sample: Available

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Product Details

Products Description of Methyltriphenylphosphonium bromide CAS# 1779-49-3

Methyltriphenylphosphonium bromide is a solid quaternary phosphonium salt flame retardant. At present, halogen-containing flame retardants are widely used organic flame retardants with excellent flame retardant properties. However, when a fire occurs, halogen-containing flame retardants will release a large amount of smoke and toxic hydrogen halide gas, causing secondary hazards. With the promulgation of the EU RoHs and WEEE directives, the application of organic halogen-containing flame retardants in the fields of electronic and electrical equipment has been subject to many restrictions. Therefore, the development of high-efficiency halogen-free flame retardants has become a very important topic.

Methyltriphenylphosphonium bromide Chemical Properties

Melting point	230-234 °C (lit.)
vapor pressure	0.0000002 hPa
Fp	>240°C
storage temp.	Inert atmosphere,Room Temperature
solubility	H2O: 0.1 g/mL, clear
form	Powder
color	White
PH	6.0-6.5 (400g/l, H2O, 20℃)
Water Solubility	400 g/L (25 ºC)
Sensitive	Hygroscopic
BRN	3599467
InChIKey	LSEFCHWGJNHZNT-UHFFFAOYSA-M
LogP	-1.18
CAS DataBase Reference	1779-49-3(CAS DataBase Reference)
NIST Chemistry Reference	Methyltriphenylphosphonium bromide(1779-49-3)
EPA Substance Registry System	Phosphonium, methyltriphenyl-, bromide (1779-49-3)

Safety Information

Hazard Codes	Xn,Xi
Risk Statements	20/21/22-36/37/38
Safety Statements	36/37-36-26
RIDADR	UN 1390 4.3/PG 2
WGK Germany	3
Autoignition Temperature	410 °C
TSCA	T
HazardClass	6.1
PackingGroup	III
HS Code	29310095
Toxicity	LD50 orally in Rabbit: 118 mg/kg

Product Application of Methyltriphenylphosphonium bromide CAS# 1779-49-3

Methyltriphenylphosphonium bromide can be used as a Wittig reagent for the preparation of olefins and for increasing the carbon number of unsaturated carbon chains. It is a ylide precursor of the Wittig reaction and is widely used in the synthesis of unsaturated bonds in liquid crystal materials. It is also widely used in organic synthesis. It is a good cationic phase transition catalyst.

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