The (2R,3R)-(+)-Bis(diphenylphosphino)butane, with the CAS registry number 74839-84-2, is also known as (R,R)-Chiraphos. This chemical's molecular formula is C₂₈H₂₈P₂ and molecular weight is 426.47. What's more, its systematic name is (2R,3R)-butane-2,3-diylbis(diphenylphosphane). The product should be sealed and stored in containers with dry inert nitrogen which are placed in cool, ventilated and dry places.

Physical properties of (2R,3R)-(+)-Bis(diphenylphosphino)butane are: (1)ACD/LogP: 9.43; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 9.43; (4)ACD/LogD (pH 7.4): 9.43; (5)ACD/BCF (pH 5.5): 1000000; (6)ACD/BCF (pH 7.4): 1000000; (7)ACD/KOC (pH 5.5): 3216258.25; (8)ACD/KOC (pH 7.4): 3216258.25; (9)#Freely Rotating Bonds: 7; (10)Polar Surface Area: 27.18 Å²; (11)Flash Point: 291.2 °C; (12)Enthalpy of Vaporization: 77.39 kJ/mol; (13)Boiling Point: 529.2 °C at 760 mmHg; (14)Vapour Pressure: 9.4E-11 mmHg at 25°C.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: P(c1ccccc1)(c2ccccc2)[C@@H]([C@H](P(c3ccccc3)c4ccccc4)C)C
(2)InChI: InChI=1/C28H28P2/c1-23(29(25-15-7-3-8-16-25)26-17-9-4-10-18-26)24(2)30(27-19-11-5-12-20-27)28-21-13-6-14-22-28/h3-24H,1-2H3/t23-,24-/m1/s1
(3)InChIKey: FWXAUDSWDBGCMN-DNQXCXABBB