1,1,3,3-Tetramethyl-1,3-diphenyldisiloxane - ≥98%(GC) , CAS No.56-33-7

CAS: 56-33-7 Cat. No.: T161574 Molecular Weight: 286.52 EC Number: 200-265-4 PubChem CID: 5945

GRADE & PURITY ≥98%(GC)

Synonyms

DTXSID8022537 | Bis(dimethylphenylsilyl)oxide | EINECS 200-265-4 | Disiloxane, 1,3-diphenyl-1,1,3,3-tetramethyl- | NCIOpen2_006351 | BIS(PHENYLDIMETHYLSILYL) OXIDE | BIS(DIMETHYLPHENYLSILYL) ETHER | CHEBI:34061 | 1,1,3,3-tetramethyl-1,3-diphenyldisiloxan

Storage

Room temperature

Shipped In

Normal

Specifications

Synonyms

DTXSID8022537 | Bis(dimethylphenylsilyl)oxide | EINECS 200-265-4 | Disiloxane, 1, 3-diphenyl-1, 1, 3, 3-tetramethyl- | NCIOpen2_006351 | BIS(PHENYLDIMETHYLSILYL) OXIDE | BIS(DIMETHYLPHENYLSILYL) ETHER | CHEBI:34061 | 1, 1, 3, 3-tetramethyl-1, 3-diphenyldisiloxan

Specifications & Purity

≥98%(GC)

Storage

Room temperature

Shipped In

Normal

Purity

≥98%(GC)

Names and Identifiers

• Pubchem Sid: 488179967
• Pubchem Sid Url: https://pubchem.ncbi.nlm.nih.gov/substance/488179967
• Canonical Smiles: C[Si](C)(C1=CC=CC=C1)O[Si](C)(C)C2=CC=CC=C2
• IUPAC Name: [dimethyl(phenyl)silyl]oxy-dimethyl-phenylsilane
• InChIKey: YQJPWWLJDNCSCN-UHFFFAOYSA-N
• INCHI: 1S/C16H22OSi2/c1-18(2,15-11-7-5-8-12-15)17-19(3,4)16-13-9-6-10-14-16/h5-14H,1-4H3
• Isomeric SMILES: C[Si](C)(C1=CC=CC=C1)O[Si](C)(C)C2=CC=CC=C2
• RTECS: JM9236000
• PubChem CID: 5945
• Molecular Weight: 286.52
• Reaxy-Rn: 2943229

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Organometallic compounds
    • Class Organometalloid compounds
      • Subclass Organosilicon compounds

• Kingdom: Organic compounds
• Superclass: Organometallic compounds
• Class: Organometalloid compounds
• Subclass: Organosilicon compounds
• Intermediate Tree Nodes: Not available
• Direct Parent: Alkylarylsilanes
• Alternative Parents: Benzene and substituted derivatives Organoheterosilanes Organic metalloid salts Organic oxygen compounds Hydrocarbon derivatives
• Molecular Framework: Aromatic homomonocyclic compounds
• Substituents: Alkylarylsilane - Benzenoid - Monocyclic benzene moiety - Organoheterosilane - Organic metalloid salt - Organic oxygen compound - Hydrocarbon derivative - Organic salt - Aromatic homomonocyclic compound
• Description: This compound belongs to the class of organic compounds known as alkylarylsilanes. These are organosilicon compounds with the general formula R[Si]R' (R = alkyl, R' = aryl).
• External Descriptors: organosiloxane

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Refractive Index: 1.52
• Flash Point(°C): 118 °C
• Boil Point(°C): 292 °C
• Molecular Weight: 286.510 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 4
• Exact Mass: 286.121 Da
• Monoisotopic Mass: 286.121 Da
• Topological Polar Surface Area: 9.200 Ų
• Heavy Atom Count: 19
• Formal Charge: 0
• Complexity: 248.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

XLogP3

References

1. Haojie Li, Zi-An Chen, Bingyu Zhao, Junhao Xin, Longlong Wang, Ke Xiao, Huazhang Zhao, Yaodong Liu.  (2025)  Engineering carbon molecular sieve membranes with tailored microstructures via molecular doping for superior hydrogen separation.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2025.162418]