CAS 556-67-2

Octametilciclotetrasilossano

Descrizione:

Octametilciclotetrasilossano, comunemente noto come D4, è un composto di silossano ciclico caratterizzato dalla sua struttura unica composta da quattro atomi di silicio e quattro atomi di ossigeno, che formano un anello con otto gruppi metilici attaccati agli atomi di silicio. Questo composto è un liquido incolore e inodore a temperatura ambiente ed è noto per la sua bassa viscosità e volatilità. D4 mostra un'eccellente stabilità termica e resistenza chimica, rendendolo utile in varie applicazioni, tra cui prodotti per la cura personale, polimeri di silicone e lubrificanti industriali. Ha una tensione superficiale relativamente bassa, che contribuisce alla sua efficacia come agente di diffusione. Tuttavia, sono state sollevate preoccupazioni ambientali e sanitarie riguardo al suo potenziale bioaccumulo e alle proprietà di interferenza endocrina, portando a un controllo normativo in diverse regioni. Di conseguenza, il suo utilizzo è monitorato e limitato in alcune applicazioni. In generale, Octametilciclotetrasilossano è un composto versatile con significative applicazioni industriali, ma il suo impatto ambientale richiede un'attenta considerazione nel suo utilizzo e smaltimento.

Formula: C₈H₂₄O₄Si₄

InChI: InChI=1S/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3

InChI key: InChIKey=HMMGMWAXVFQUOA-UHFFFAOYSA-N

SMILES: C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1

Sinonimi:

• 2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-Tetroxatetrasilocane
• 2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
• 2,2,4,4,6,6,8,8-Octamethylcyclotetrasiloxane
• Abil K 4
• Additive 8030
• Cyclic dimethylsiloxane tetramer
• Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octamethyl-
• Cyclotetrasiloxane, octamethyl-
• D 4
• D4
• Dabco DC 5258
• Dc 244
• Dc 344
• Dc 5258
• Dow Corning 244
• Dow Corning 244 Fluid
• Dow Corning 344
• Dwq 110
• Dwq 120
• Kf 994
• L 6907
• Ls 8620
• Mirasil CM 4
• NUC Silicone VS 7207
• Nsc 345674
• Octamethyl cyclotetrasilazane
• Octamethylcyclotetrasiloxan
• Octamethylcyclotetrasiloxane
• Octamethylcyclotetrasiloxanes
• Octametilciclotetrasiloxano
• Octaphenyl Silsesquioxane
• Pmx 0110
• SH 244 Fluid
• Sf 1173
• Sh 244
• Sh 30
• Sh 344
• Silbione 70045V2
• Silbione V 2
• Tetracyclomethicone
• Tsf 404
• Uc 7207
• Union Carbide 7207
• Volasil 244
• Vs 7207
• Xf 3803
• Y 7175
• Yf 393

Octamethylcyclotetrasiloxane

CAS: 556-67-2

Formula: C₈H₂₄O₄Si₄

Purezza: >98.0%(GC)

Colore e forma: Colorless to Almost colorless clear liquid

Peso molecolare: 296.62

Ref: 3B-O0142

Octamethylcyclotetrasiloxane, 98%

CAS: 556-67-2

Octamethylcyclotetrasiloxane is used to prepare silicone oil, silicone rubber and silicone resin having different degrees of polymerization through ring opening and polymerizing. It is also widely used in various fields viz. construction, electronics, textile, automobile, personal care, food, and ma

Formula: C₈H₂₄O₄Si₄

Purezza: 98%

Colore e forma: Clear colorless, Liquid

Peso molecolare: 296.62

Ref: 02-A15240

Octamethylcyclotetrasiloxane, 98%

CAS: 556-67-2

Octamethylcyclotetrasiloxane, 98%

Formula: C₈H₂₄O₄Si₄

Purezza: 98%

Colore e forma: colorless liq.

Peso molecolare: 296.62

Ref: 08-14-5400

POLYSILOXANE D4 CRS

CAS: 556-67-2

POLYSILOXANE D4 CRS

Ref: 41-Y0002533

Cyclomethicone 4

CAS: 556-67-2

Organo-inorganic compounds, nesoi

Formula: C₈H₂₄O₄Si₄

Colore e forma: Liquid

Peso molecolare: 296.07517

Ref: 45-1154707

Octamethylcyclotetrasiloxane

CAS: 556-67-2

Octamethylcyclotetrasiloxane

Purezza: ≥95%

Peso molecolare: 296.618g/mol

Ref: 54-OR1000035

Octamethylcyclotetrasiloxane

CAS: 556-67-2

Formula: C₈H₂₄Si₄O₄

Peso molecolare: 296.62

Ref: 4Z-C-330001

Octamethylcyclotetrasiloxane

Prodotto controllato

CAS: 556-67-2

Formula: C₈H₂₄O₄Si₄

Colore e forma: Neat

Peso molecolare: 296.62

Ref: 04-C15710800

Octamethylcyclotetrasiloxane

CAS: 556-67-2

S12400 - Octamethylcyclotetrasiloxane

Formula: C₈H₂₄O₄Si₄

Purezza: 98%

Colore e forma: Clear Liquid

Peso molecolare: 296.616

Ref: 10-S12400

Siloxane Mixture 61 100 µg/mL in Acetonitrile

CAS: 107-46-0, 107-51-7, 107-52-8, 141-62-8, 141-63-9, 540-97-6, 541-02-6, 541-05-9, 556-67-2

Colore e forma: Mixture

Ref: 04-A30000061AL

Octamethylcyclotetrasiloxane

Prodotto controllato

CAS: 556-67-2

Applications Octamethylcyclotetrasiloxane, is an organometallic reagent , that can be used for the preparation of siloxane polymers, with high surface-hydrophobicity restoration.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Fritz, O., et al.: MRS Online Proceedings Library, 1535 (2012); Vanossi, A., et al.: Condensed Matter (2013);

Formula: C₈H₂₄O₄Si₄

Colore e forma: Colourless

Peso molecolare: 296.62

Ref: TR-O237145

OCTAMETHYLCYCLOTETRASILOXANE, 98%

CAS: 556-67-2

ALD Material
Atomic layer deposition (ALD) is a chemically self-limiting deposition technique that is based on the sequential use of a gaseous chemical process. A thin film (as fine as -0.1 Å per cycle) results from repeating the deposition sequence as many times as needed to reach a certain thickness. The major characteristic of the films is the resulting conformality and the controlled deposition manner. Precursor selection is key in ALD processes, namely finding molecules which will have enough reactivity to produce the desired films yet are stable enough to be handled and safely delivered to the reaction chamber.
Octamethylcyclotetrasiloxane; D4; Cyclic tetramer; Cyclomethicone; Cyclohexasiloxane; Cyclotetrasiloxane; OMCTS
Viscosity: 2.3 cStΔHfus: 18.4 kJ/molΔHvap: 45.6 kJ/molDipole moment: 1.09 debyeVapor pressure, 23 °C: 1 mmDielectric constant: 2.39Ring strain: 1.00 kJ/molSurface tension, 20 °C: 17.9 mN/mCritical temperature: 314 °CCritical pressure: 1.03 mPaSpecific heat: 502 J/g/°Coefficient of thermal expansion: 0.8 x 10-3Cryoscopic constant: 11.2Henry’s law constant, Hc: 3.4 ± 1.7Ea, polym: 79 kJ/molOctanol/water partition coefficient, log Kow: 5.1Basic building block for silicones by ring-opening polymerizationSolubility, water: 50 ?g/l

Formula: C₈H₂₄O₄Si₄

Purezza: 98%

Colore e forma: Colourless Liquid

Peso molecolare: 296.61

Ref: 3H-SIO6700.0

(7.0-8.0% VINYLMETHYLSILOXANE) - DIMETHYLSILOXANE COPOLYMER, TRIMETHYLSILOXY TERMINATED, 800-1,200 cSt

CAS: 556-67-2, 67762-94-1

VDT-731: Vinylmethylsiloxane-Dimethylsiloxane Copolymer, TMS Terminated (Pendant Functional Fluid)
Vinyl containing copolymers are used as crosslinkers in Pt and peroxide 2-part addition cure elastomers.
VDT-731 Properties
Viscosity: 800-1,200 cStMolecular Weight: 28,000 g/molVinyl (eq/kg): 0.9-1.1

Colore e forma: Liquid

Peso molecolare: 28000.0

Ref: 3H-VDT-731