Tetraphenylphosphonium chloride

Tetraphenylphosphonium chloride
Names
	Preferred IUPAC name Tetraphenylphosphanium chloride
Identifiers
CAS Number	2001-45-8 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL223885 ;
ChemSpider	144578 ;
ECHA InfoCard	100.016.265
EC Number	217-890-3;
PubChem CID	164911;
CompTox Dashboard (EPA)	DTXSID00897533 ;
	InChI InChI=1S/C24H20P.ClH/c1-5-13-21(14-6-1)25(22-15-7-2-8-16-22,23-17-9-3-10-18-23)24-19-11-4-12-20-24;/h1-20H;1H/q+1;/p-1 Key: WAGFXJQAIZNSEQ-UHFFFAOYSA-M ; InChI=1S/C24H20P.ClH/c1-5-13-21(14-6-1)25(22-15-7-2-8-16-22,23-17-9-3-10-18-23)24-19-11-4-12-20-24;/h1-20H;1H/q+1;/p-1 Key: WAGFXJQAIZNSEQ-REWHXWOFAO; Key: WAGFXJQAIZNSEQ-UHFFFAOYSA-M;
	SMILES [Cl-].c1c(cccc1)[P+](c2ccccc2)(c3ccccc3)c4ccccc4;
Properties
Chemical formula	[P(C6H5)4]Cl
Molar mass	374.85 g·mol−1
Appearance	colourless solid
Density	1.27 g dm−3
Melting point	272 to 274 °C (522 to 525 °F; 545 to 547 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Tetraphenylphosphonium chloride is the chemical compound with the formula [(C₆H₅)₄P]Cl, abbreviated Ph₄PCl or PPh₄Cl or [PPh₄]Cl, where Ph stands for phenyl. Tetraphenylphosphonium and especially tetraphenylarsonium salts were formerly of interest in gravimetric analysis of perchlorate and related oxyanions. This colourless salt is used to generate lipophilic salts from inorganic and organometallic anions. Thus, [Ph₄P]⁺ is useful as a phase-transfer catalyst, again because it allows inorganic anions to dissolve in organic solvents.

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