Hexamethyldisiloxane(HMDSO) - NMR grade, ≥99.7% , CAS No.107-46-0

CAS: 107-46-0 Cat. No.: H105444 Formula: C₆H₁₈Si₂O Molecular Weight: 162.38 Beilstein Registry Number: 1736258 EC Number: 203-492-7

GRADE & PURITY NMR grade, ≥99.7%

Synonyms

HMDSO | 1,1,1,3,3,3-Hexamethyldisiloxane # | CAS-107-46-0 | HEXAMETHYLDISILOXANE | MFCD00008265 | Bis(trimethylsilyl) oxide | Hexamethyldisiloxane, NMR grade, >=99.5% | J-802221 | NCGC00164086-01 | BCP11630 | H0091 | NSC43346 | NSC-43346 | Tox21_112082 |

Storage

Room temperature,Argon charged

Shipped In

FedEx DG Service

Specifications

Synonyms

HMDSO | 1,1,1,3,3,3-Hexamethyldisiloxane # | CAS-107-46-0 | HEXAMETHYLDISILOXANE | MFCD00008265 | Bis(trimethylsilyl) oxide | Hexamethyldisiloxane, NMR grade, >=99.5% | J-802221 | NCGC00164086-01 | BCP11630 | H0091 | NSC43346 | NSC-43346 | Tox21_112082 |

Specifications & Purity

NMR grade, ≥99.7%

Storage

Room temperature,Argon charged

Shipped In

FedEx DG Service

Grade

NMR grade

Purity

≥99.7%

Names and Identifiers

Pubchem Sid

488182922

Pubchem Sid Url

https://pubchem.ncbi.nlm.nih.gov/substance/488182922

Canonical Smiles

C[Si](C)(C)O[Si](C)(C)C

IUPAC Name

trimethyl(trimethylsilyloxy)silane

InChIKey

UQEAIHBTYFGYIE-UHFFFAOYSA-N

INCHI

1S/C6H18OSi2/c1-8(2,3)7-9(4,5)6/h1-6H3

Isomeric SMILES

C[Si](C)(C)O[Si](C)(C)C

WGK Germany

1

RTECS

JM9237000

UN Number

1993

Packing Group

II

Molecular Weight

162.38

Beilstein

1736258

Reaxy-Rn

1736258

Reaxys-RN_link_address

https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1736258&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Organometallic compounds
    • Class Organometalloid compounds
      • Subclass Organosilicon compounds
        • Level5 Siloxanes
          • Level6 Disiloxanes

• Kingdom: Organic compounds
• Superclass: Organometallic compounds
• Class: Organometalloid compounds
• Subclass: Organosilicon compounds
• Intermediate Tree Nodes: Siloxanes
• Direct Parent: Disiloxanes
• Alternative Parents: Trialkylheterosilanes Organic metalloid salts Organic oxygen compounds Hydrocarbon derivatives
• Molecular Framework: Aliphatic acyclic compounds
• Substituents: Disiloxane - Trialkylheterosilane - Organoheterosilane - Organic metalloid salt - Organic oxygen compound - Hydrocarbon derivative - Organic salt - Aliphatic acyclic compound
• Description: This compound belongs to the class of organic compounds known as disiloxanes. These are organosilicon compounds with the general formula H[Si](R)(R')O[Si](H)(R'')R''' (R= organyl, R'-R'''= H or organyl).
• 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

• Solubility: Insoluble in water, soluble in most organic solvents.
• Sensitivity: Hygroscopic
• Refractive Index: 1.375
• Flash Point(°F): 32 °F
• Flash Point(°C): 0 °C
• Boil Point(°C): 101°C
• Melt Point(°C): -59°C
• Molecular Weight: 162.380 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 2
• Exact Mass: 162.09 Da
• Monoisotopic Mass: 162.09 Da
• Topological Polar Surface Area: 9.200 Ų
• Heavy Atom Count: 9
• Formal Charge: 0
• Complexity: 76.200
• 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

Frequently Asked Questions

What is the purity of this product?

This product is supplied at ≥99.7% purity (chemical assay). Lot-specific values are stated on the Certificate of Analysis.

What does NMR grade mean?

NMR grade indicates that the chemical has been purified and tested specifically for use in nuclear magnetic resonance (NMR) spectroscopy. Key specifications typically include controlled UV absorbance at common detection wavelengths, low non-volatile residue, controlled moisture content, and verified lot-to-lot consistency. NMR grade is used for mobile phases, sample preparation and analytical standards in this workflow.

How should this product be stored?

Store at room temperature under argon. It is supplied under an argon blanket; reseal under inert gas after each use.

How is this product shipped?

This product is classified as dangerous goods and ships via FedEx DG Service. Ground and other economy services are not available, and delivery to some destinations or address types may be restricted.

What are the CAS number, molecular formula and molecular weight?

The CAS Number is 107-46-0, the molecular formula is C6H18OSi2, and the molecular weight is 162.38 g/mol. InChIKey UQEAIHBTYFGYIE-UHFFFAOYSA-N.

What documentation is provided?

Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.