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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 11534901Generated: October 23, 2026

(R,R)-2,7-DI-Tert-butyl-9,9-dimethyl-4,5-bis(methylphenylphosphino)xanthene

-9,9-dimethyL · -9H-xanthene-4,5-diyL · 4,5-DIPHENYLPHOSPHINO-2,7-DI-TERT-BUTYL-9,9-DIMETHYLXANTHENE · 4,5-Diphenylphosphino-2,7-di-tert-butyl-9,9-dimethoxyxanthene · 4,5-Bis(diphenylphosphino)-2,7-di-tert-butyl-9,9-dimethylxanthene · 2,7-DI-TERT-BUTYL-9,9-DIMETHYL-4,5-BIS(METHYLPHENYLPHOSPHINO)XANTHENE · (R,R)-2,7-Di-tert-butyl-9,9-dimethyl-4,5-bis(methylphenylphosphino)xanthene · (S,S)-2,7-DI-TERT-BUTYL-9,9-DIMETHYL-4,5-BIS(METHYLPHENYLPHOSPHINO)XANTHENE

https://huagongshe.com/en/chemical/11534901

(R,R)-2,7-DI-Tert-butyl-9,9-dimethyl-4,5-bis(methylphenylphosphino)xanthene molecular structure

Identifiers & Physical Properties

CAS No.221462-97-1
Molecular formulaC47H48OP2
Average molar mass690.8 g/mol
Monoisotopic mass690.31804015 g/mol
SMILESCC(C)(C)c1cc(P(c2ccccc2)c2ccccc2)c2c(c1)C(C)(C)c1cc(C(C)(C)C)cc(P(c3ccccc3)c3ccccc3)c1O2
InChIKeyKDKJDGIJQNFICS-UHFFFAOYSA-N
PubChem CID11534901
EC No.986-954-7

Chemical & Physical Properties

XLogP13
Topological polar surface area9.2
Hydrogen bond donors0
Hydrogen bond acceptors1
Rotatable bonds8
Heavy atoms50
Formal charge0
Complexity944
Melting point194-195 °C(Solv: toluene (108-88-3)ethanol (64-17-5))
Boiling point701.4±60.0 °C(Predicted)

Safety & Regulations

GHS classificationWarningH302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposureRespiratory tract irritation]P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.
Hazard Classes and CategoriesAcute Tox. 4 (100%)Skin Irrit. 2 (100%)Eye Irrit. 2 (100%)STOT SE 3 (100%)