2,4,6,8-Tetramethylcyclotetrasiloxane

• CAS: 2370-88-9
• Catalog Number: ACM2370889
• Category: Micro/NanoElectronics
• Molecular Weight: 236.48
• Molecular Formula: C4H16O4Si4
• Description: Atomic number of base material: 14 Silicon
• Synonyms: 1,2,5,7-Tetramethylcyclotetrasiloxane
• Canonical SMILES: C[Si]1O[Si](O[Si](O[Si](O1)C)C)C
• InChI: InChI=1S/C4H12O4Si4/c1-9-5-10(2)7-12(4)8-11(3)6-9/h1-4H3
• InChI Key: WZJUBBHODHNQPW-UHFFFAOYSA-N
• Boiling Point: 134 °C
• Melting Point: -69 °C
• Flash Point: 76 °F
• Density: 0.986 g/mL at 25 °C (lit.)
• Solubility: Miscible with most organic solvents
• Appearance: Colorless liquid
• Application: 2, 4, 6, 8-Tetramethylcyclotetrasiloxane (TMCTS) is an important precursor for the deposition of polysiloxane, cyclic siloxane, silicon dioxide, oxycarbide thin films with low dielectric constant for microelectronics, semiconductors and other applications
• Storage: 2-8 °C
• Assay: ≥99.5% (GC)
• Complexity: 99
• Covalently-Bonded Unit Count: 1
• EC Number: 219-137-4
• Exact Mass: 235.981265
• Form: liquid
• Formal Charge: 0
• Grade: deposition grade
• Hazard Statements: H319 : Causes serious eye irritation.; H226 : Flammable liquid and vapour.
• H-Bond Acceptor: 4
• H-Bond Donor: 0
• Heavy Atom Count: 12
• HS Code: Hazardous for shipping
• MDL Number: MFCD00039567
• Monoisotopic Mass: 235.981265
• Odor: Ether-like odor
• Packaging: 25 g
• Precautionary Statements: P210 : Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.; P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection.; P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.; P337 + P313 : If eye irritation persists: Get medical advice/ attention.; P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.; P403 + P235 : Store in a well-ventilated place. Keep cool.
• PubChem ID: 253659681
• Quality Level: 100
• Refractive Index: 1.387
• Rotatable Bond Count: 0
• Signal Word: Warning
• Specific Gravity: 0.99
• Topological Polar Surface Area: 36.9 Ų

Custom Q&A

What is the molecular formula of 2,4,6,8-Tetramethylcyclotetrasiloxane?

The molecular formula of 2,4,6,8-Tetramethylcyclotetrasiloxane is C4H12O4Si4.

What is the molecular weight of 2,4,6,8-Tetramethylcyclotetrasiloxane?

The molecular weight of 2,4,6,8-Tetramethylcyclotetrasiloxane is 236.48 g/mol.

What are some synonyms for 2,4,6,8-Tetramethylcyclotetrasiloxane?

Some synonyms for 2,4,6,8-Tetramethylcyclotetrasiloxane are 2370-88-9, 1,3,5,7-Tetramethylcyclotetrasiloxane, and Tetramethylcyclotetrasiloxane.

What is the InChIKey for 2,4,6,8-Tetramethylcyclotetrasiloxane?

The InChIKey for 2,4,6,8-Tetramethylcyclotetrasiloxane is WZJUBBHODHNQPW-UHFFFAOYSA-N.

How many hydrogen bond acceptor counts are present in 2,4,6,8-Tetramethylcyclotetrasiloxane?

There are 4 hydrogen bond acceptor counts in 2,4,6,8-Tetramethylcyclotetrasiloxane.

What is the exact mass of 2,4,6,8-Tetramethylcyclotetrasiloxane?

The exact mass of 2,4,6,8-Tetramethylcyclotetrasiloxane is 235.98126500 g/mol.

How many heavy atoms are there in 2,4,6,8-Tetramethylcyclotetrasiloxane?

There are 12 heavy atoms in 2,4,6,8-Tetramethylcyclotetrasiloxane.

Is the compound 2,4,6,8-Tetramethylcyclotetrasiloxane canonicalized?

Yes, the compound 2,4,6,8-Tetramethylcyclotetrasiloxane is canonicalized.

What is the topological polar surface area of 2,4,6,8-Tetramethylcyclotetrasiloxane?

The topological polar surface area of 2,4,6,8-Tetramethylcyclotetrasiloxane is 36.9Ų.

How many covalently-bonded units are present in 2,4,6,8-Tetramethylcyclotetrasiloxane?

There is 1 covalently-bonded unit in 2,4,6,8-Tetramethylcyclotetrasiloxane.

Synthetic Use

Upstream Synthesis Route 1

• 75-54-7
• 75-77-4

• 1873-88-7
• 16066-09-4
• 2370-88-9
• 6166-86-5

Reference: [1] J. Gen. Chem. USSR (Engl. Transl.), 1991, vol. 61, # 6.2, p. 1257 - 1261[2] Zhurnal Obshchei Khimii, 1991, vol. 61, # 6, p. 1378 - 1383

Upstream Synthesis Route 2

• 75-54-7
• 75-77-4

• 1873-88-7
• 16066-09-4
• 2370-88-9
• 17478-13-6
• 6166-86-5
• 17998-54-8

Reference: [1] J. Gen. Chem. USSR (Engl. Transl.), 1991, vol. 61, # 6.2, p. 1257 - 1261[2] Zhurnal Obshchei Khimii, 1991, vol. 61, # 6, p. 1378 - 1383

Upstream Synthesis Route 3

• 75-54-7
• 75-77-4

• 1873-88-7
• 16066-09-4
• 2370-88-9
• 17478-13-6
• 6166-86-5
• 17998-54-8

Reference: [1]Varaprath, Sudarsanan; Stutts, Debra H.
[Journal of Organometallic Chemistry, 2007, vol. 692, # 10, p. 1892 - 1897]
[2]Varaprath, Sudarsanan
[Journal of Organometallic Chemistry, 1999, vol. 572, # 1, p. 37 - 47]
[3]Sokolow et al.
[Zhurnal Obshchei Khimii, 1956, vol. 26, p. 933,934;engl.Ausg.S.1061]

Upstream Synthesis Route 4

• 75-54-7
• 75-77-4

• 1873-88-7
• 16066-09-4
• 2370-88-9
• 6166-86-5

Reference: [1]Journal of general chemistry of the USSR,1991,vol. 61,p. 1257 - 1261
Zhurnal Obshchei Khimii,1991,vol. 61,p. 1378 - 1383

Downstream Synthesis Route 1

• 2370-88-9

• 18148-76-0

Reference: [1]Sokolow et al.
[Zhurnal Obshchei Khimii, 1956, vol. 26, p. 933,934;engl.Ausg.S.1061]
[2]Current Patent Assignee: MERCK KGAA - CN108395450, 2018, A
Location in patent: Paragraph 0193; 0194

* For details of the synthesis route, please refer to the original source to ensure accuracy.