40817-03-6

40817-03-6 - Names and Identifiers

Name	p-Xylenebis(triphenylphosphonium bromide)
Synonyms	PARA-XYLYLENEBIS-(TRIPHENYLPHOSPHONIUM p-Xylenebis(triphenylphosphonium bromide) p-xylenebis(triphenylphosphonium) dibromide p-Xylylenebis(triphenylphosphonium bromide) xylenylenebis(triphenylphosphonium) bromide (p-Xylylene)bis(triphenylphosphonium)·dibromide para-xylylenebis-(triphenylphosphonium bromide), 1,4-Bis[(triphenylphosphonio)methyl]benzene dibromide (benzene-1,3-diyldimethanediyl)bis(triphenylphosphonium) (1,4-Phenylenebis(Methylene))bis(triphenylphosphoniuM) broMide [1,4-phenylenebis(methylene)]bis[triphenylphosphonium] dibromide (benzene-1,4-diyldimethanediyl)bis(triphenylphosphonium) dibromide
CAS	40817-03-6 10273-74-2
EINECS	255-092-7
InChI	InChI=1/C44H38P2.2BrH/c1-7-19-39(20-8-1)45(40-21-9-2-10-22-40,41-23-11-3-12-24-41)35-37-31-33-38(34-32-37)36-46(42-25-13-4-14-26-42,43-27-15-5-16-28-43)44-29-17-6-18-30-44;;/h1-34H,35-36H2;2*1H/q+2;;/p-2

40817-03-6 - Physico-chemical Properties

Molecular Formula	C44H38Br2P2
Molar Mass	788.528042
Melting Point	>300°C(lit.)
Water Solubility	Slightly soluble in water.
Appearance	Crystalline powder
BRN	3584592
Storage Condition	under inert gas (nitrogen or Argon) at 2-8°C
Sensitive	Hygroscopic
MDL	MFCD00011914

40817-03-6 - Risk and Safety

Hazard Symbols	Xi - Irritant
Risk Codes	36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection
UN IDs	3278
WGK Germany	3

40817-03-6 - Introduction

p-Xylenebis(triphenylphosphonium bromide) is an organic compound with the chemical formula C26H24Br2P2, often abbreviated as XPPh3Br2, where X is the para group.

The compound is a white solid, soluble in ethers and organic solvents. Its melting point is about 140-145 degrees Celsius. It has strong electrophilicity and can be used as an electrophilic reagent in organic synthesis.

p-Xylenebis(triphenylphosphonium bromide) is widely used in organic synthesis. Due to its electrophilicity, it can be used for allylation, electrophilic substitution reactions on olefins, etc. It can also be used as an electron catalyst for radical substitution reactions and chlorination reactions.

p-Xylenebis(triphenylphosphonium bromide) can be prepared by reacting para-toluene with an excess of triphenylphosphine and bromine. Under reaction conditions, the reactants are typically carried out under an inert atmosphere and stirred at low temperature for several hours. The reaction product can be obtained in pure form by recrystallization of crystals.

From a safety point of view, p-Xylenebis(triphenylphosphonium bromide) do not cause obvious hazards under normal circumstances. However, it is a flammable substance and should be kept away from open flames and high temperatures. During use, care should be taken to avoid inhalation of its dust and contact with the skin. Avoid contact with oxidizing agents and acid substances to prevent the production of hazardous substances. During handling and storage, chemical safety practices should be followed. When disposing of waste, please handle it correctly in accordance with relevant laws and regulations.

Last Update：2024-04-10 22:29:15