The Phosphine,tris(4-methoxyphenyl)-, with the CAS registry number 855-38-9 and EINECS registry number 212-723-0, has the systematic name of tris(4-methoxyphenyl)phosphane. It is a kind of white to pale yellow crystalline powder, and belongs to the following product categories: Ligand; Phosphine Ligands; Synthetic Organic Chemistry; Basic Phosphine Ligands Catalysis and Inorganic Chemistry; Catalysis and Inorganic Chemistry; Cross-Coupling; Phosphine Ligands; Phosphorus Compounds. And the molecular formula of the chemical is C₂₁H₂₁O₃P.

The characteristics of Phosphine,tris(4-methoxyphenyl)- are as followings: (1)ACD/LogP: 5.44; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.44; (4)ACD/LogD (pH 7.4): 5.44; (5)ACD/BCF (pH 5.5): 7969.69; (6)ACD/BCF (pH 7.4): 7969.69; (7)ACD/KOC (pH 5.5): 21589.49; (8)ACD/KOC (pH 7.4): 21589.49; (9)#H bond acceptors: 3; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 6; (12)Polar Surface Area: 41.28 Å²; (13)Flash Point: 287.3 °C; (14)Enthalpy of Vaporization: 69.05 kJ/mol; (15)Boiling Point: 457.8 °C at 760 mmHg; (16)Vapour Pressure: 3.93E-08 mmHg at 25°C.

Uses of Phosphine,tris(4-methoxyphenyl)-: It can react with iodomethane to produce Methyl-tris-(4-methoxy-phenyl)-phosphoniumjodid. And the yield is about 93%.

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin. Therefore, you had better take the following instructions: Wear suitable gloves and eye/face protection, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O(c3ccc(P(c1ccc(OC)cc1)c2ccc(OC)cc2)cc3)C
(2)InChI: InChI=1/C21H21O3P/c1-22-16-4-10-19(11-5-16)25(20-12-6-17(23-2)7-13-20)21-14-8-18(24-3)9-15-21/h4-15H,1-3H3
(3)InChIKey: UYUUAUOYLFIRJG-UHFFFAOYAD