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Octamethylcyclotetrasiloxane is a colorless viscous liquid.
Octamethylcyclotetrasiloxane is an odorless, colorless non-oily silicone fluid which has C8H24O4Si4 as chemical formula.
Octamethylcyclotetrasiloxane is a cyclosiloxane that is the octamethyl derivative of cyclotetrasiloxane.
CAS Number: 556-67-2
Molecular Formula: C8H24O4Si4
Molecular Weight: 296.62
EINECS Number: 209-136-7
Octamethylcyclotetrasiloxane is also known as D4.
Octamethylcyclotetrasiloxane is a cyclic organic silicon substance which can be used as monomer in the production of silicone polymers such as rubber, resins and greases.
Octamethylcyclotetrasiloxane is an organosilicon compound and a cyclosiloxane. It derives from a hydride of a cyclotetrasiloxane.
Octamethylcyclotetrasiloxane, also called D4, is an organosilicon compound with the formula [(CH3)2SiO]4.
Octamethylcyclotetrasiloxane is a colorless viscous liquid.
Octamethylcyclotetrasiloxane is a common cyclomethicone.
Octamethylcyclotetrasiloxane, often abbreviated as D4, is a chemical compound belonging to the class of organosilicon compounds.
Octamethylcyclotetrasiloxane's a type of cyclotetrasiloxane, which means it's composed of four silicon atoms, four oxygen atoms, and eight methyl (CH3) groups.
The molecular formula of octamethylcyclotetrasiloxane is (CH3)8Si4O4, and its chemical structure resembles a ring.
Octamethylcyclotetrasiloxane is a cyclosiloxane, an octamethyl derivative of cyclotetrasiloxane.
Octamethylcyclotetrasiloxane is an organosilicon compound and a cyclosiloxane.
Octamethylcyclotetrasiloxane is derived from the hydride of a cyclotetrasiloxane.
Octamethylcyclotetrasiloxane is a member of the cyclic siloxane or cyclomethicone family.
Octamethylcyclotetrasiloxane is often referred to simply as D4 because of its four dimethylsiloxane units.
Octamethylcyclotetrasiloxane exists as an oily liquid or a low melting solid.
Octamethylcyclotetrasiloxane is among the most important of all cyclic siloxanes with a global production volume of 136 million tons.
100,000–1,000,000 tons of Octamethylcyclotetrasiloxane are produced and/or imported annually in Europe.
In one of the many reactions they reported, they mixed dimethyldichlorosilane1 (Me2SiCl2) with large volumes of water.
Octamethylcyclotetrasiloxane produces a colorless oil with a composition of empirical formula close to Me2SiO.
Octamethylcyclotetrasiloxane, also called D4, is an organosilicon compound with the formula [(CH3)2SiO]4.
Octamethylcyclotetrasiloxane is a common cyclomethicone.
Octamethylcyclotetrasiloxane is widely used in cosmetics.
Octamethylcyclotetrasiloxane (D4) is a volatile methylsiloxane (VMS) with a relatively low molecular weight.
This silicone fluid has a silicon-oxygen bond in a cyclic arrangement and methyl groups are attached to the silicon atom.
Octamethylcyclotetrasiloxane can be used in the manufacture of silicone based polymers for use in medical devices and personal care products.
Octamethylcyclotetrasiloxane is produced from dimethyldichlorosilane. Hydrolysis of the dichloride produces a mixture of cyclic dimethylsiloxanes and polydimethylsiloxane.
From this mixture, the cyclic siloxanes including Octamethylcyclotetrasiloxane can be removed by distillation.
In the presence of a strong base such as KOH, the polymer/ring mixture is equilibrated, allowing complete conversion to the more volatile cyclic siloxanes:
[(CH3)2SiO]4n → n [(CH3)2SiO]4
Octamethylcyclotetrasiloxane and D5 are also precursors to the polymer.
Octamethylcyclotetrasiloxane is a cyclosiloxane, an octamethyl derivative of cyclotetrasiloxane.
Octamethylcyclotetrasiloxane is an organosilicon compound and a cyclosiloxane.
Octamethylcyclotetrasiloxane is derived from the hydride of a cyclotetrasiloxane.
Octamethylcyclotetrasiloxane is produced from dimethyldichlorosilane.
Octamethylcyclotetrasiloxane is added dropwise to water, temperature is maintained at 30-40°C, stratified, acid water
Once released, the oily material is hydrolyzed with sodium hydroxide solution, hydrolyzate and 0.5%-2% potassium hydroxide.
Octamethylcyclotetrasiloxane is added to the crushing vessel and crushed at 120-140°C and 99.8 kPa vacuum.
Octamethylcyclotetrasiloxane is often used in cosmetics, skincare, and haircare products due to its ability to act as a skin conditioning agent and emollient.
Octamethylcyclotetrasiloxane can enhance the texture and feel of products, making them smoother and more spreadable.
Octamethylcyclotetrasiloxane can be found in certain cleaning products, polishes, and automotive care items due to its ability to provide a protective layer and enhance shine.
Octamethylcyclotetrasiloxane's used as a starting material in the synthesis of various polymers and silicone products.
Octamethylcyclotetrasiloxane serves as a precursor to longer siloxane chains.
Octamethylcyclotetrasiloxane's lubricating properties make it suitable for use in industrial lubricants and greases.
Octamethylcyclotetrasiloxane can be used as a component in heat transfer fluids and dielectric materials due to its thermal stability and electrical insulating properties.
The cracked material is fragmented and the fragment is collected at 173-176°C to obtain octamethylcyclotetraoxysilane.
Octamethylcyclotetrasiloxane (D4) is a volatile methylsiloxane (VMS) of relatively low molecular weight.
Octamethylcyclotetrasiloxane has a cyclic silicon-oxygen bond and methyl groups are attached to this bond.
Octamethylcyclotetrasiloxane is also known as cyclotetrasiloxane.
Octamethylcyclotetrasiloxane (D4) is a volatile methylsiloxane (VMS) with a relatively low molecular weight.
This silicone fluid has a silicon-oxygen bond in a cyclic arrangement and methyl groups are attached to the silicon atom.
Octamethylcyclotetrasiloxane can be used in the manufacture of silicone based polymers for use in medical devices and personal care products.
Octamethylcyclotetrasiloxane is produced from dimethyldichlorosilane.
Dimethyldichlorosilane is added dropwise to water, the temperature is maintained at 30-40°C, stratified, the acid water is released, the oily material is hydrolyzed with sodium hydroxide solution, the hydrolysate and 0.5%-2% potassium hydroxide are added to the cracking kettle and cracked at 120-140°C and 99.8 kPa vacuum.
The cracked material is fractionated and the fraction is collected at 173-176°C to obtain octamethylcyclotetraoxysilane.
Octamethylcyclotetrasiloxane is a member of the cyclic siloxane, or cyclomethicone, family.
Octamethylcyclotetrasiloxane is often called simply D4 because of its four dimethylsiloxane units.
Octamethylcyclotetrasiloxane exists as an oily liquid or low-melting solid.
In 1946, Winton Patnode and Donald F. Wilcock at General Electric (Schenectady, NY) prepared Octamethylcyclotetrasiloxane as part of an extensive study of methylpolysiloxanes made by hydrolyzing methylchlorosilanes.
In one the many reactions they reported, they mixed dimethyldichlorosilane1 (Me2SiCl2) with large volumes of water to produce a colorless oil with a composition that had an empirical formula close to that of Me2SiO.
Melting point: 17-18 °C (lit.)
Boiling point: 175-176 °C (lit.)
Density: 0.956 g/mL at 25 °C (lit.)
vapor denity: 1 (vs air)
vapor pressure: 1.32hPa at 25℃
refractive index: n20/D 1.396(lit.)
Flash point: 140 °F
storage temp.: Store below +30°C.
solubility: <0.001g/l Hydrolysis
form: liquid
color: colorless
Specific Gravity: 0.956
explosive limit: 0.4-11.7%(V)
Viscosity: 1.6mm2/s
Water Solubility: INSOLUBLE
Sensitive: Moisture Sensitive
Merck: 14,6747
BRN: 1787074
InChIKey: HMMGMWAXVFQUOA-UHFFFAOYSA-N
LogP: 6.98 at 21.7℃
Octamethylcyclotetrasiloxane is used to prepare silicone oil, silicone rubber and silicone resin having different degrees of polymerization through ring opening and polymerizing.
Octamethylcyclotetrasiloxane is also widely used in various fields, construction, electronics, textile, automobile, personal care, food, and machining.
Octamethylcyclotetrasiloxane is an organometallic reagent utilized for the preparation of siloxane polymers having high surface-hydrophobicity restoration.
Octamethylcyclotetrasiloxane is colorless, inflammable, and can not dissolve in water, but dissolve in organic solvents such as benzene, etc.
Octamethylcyclotetrasiloxane can be used to synthesize organic silicon polymer by acid or alkali catalysis to manufacture silicone oil, silicone rubber, etc.
Octamethylcyclotetrasiloxane can also be used directly as a treating agent for rubber stuffing and the raw material for cosmetics.
Hoshine Octamethylcyclotetrasiloxane (D4) is a volatile polydimethylcyclosiloxane, mainly composed of octamethylcyclotetrasiloxane.
Under the catalysis of acid and base, Octamethylcyclotetrasiloxane is polymerized into silicone polymer, which is the basic raw material of silicone oil and silicone rubber.
Octamethylcyclotetrasiloxane, also known as cyclotetrasiloxane and Octamethylcyclotetrasiloxane.
Octamethylcyclotetrasiloxane is an industrial product used in many applications, primarly in cosmetic products and polymers, in its pure form and in mixtures with other siloxanes.
All silicone polymers have residual of Octamethylcyclotetrasiloxane, because it is a byproduct of polymerisation.
Octamethylcyclotetrasiloxane was identified as a harmfull compound to the environment, and it may accumulate in living organisms and cause complications.
Octamethylcyclotetrasiloxane (D4) is a volatile methylsiloxane (VMS) of relatively low molecular weight.
Octamethylcyclotetrasiloxane has a silicon-oxygen bond in a cyclic arrangement and methyl groups are attached to the silicon atom.
Octamethylcyclotetrasiloxane can be used in the manufacture of silicone-based polymers for use in medical devices and personal care products.
Octamethylcyclotetrasiloxane applications: Octamethylcyclotetrasiloxane can be polymerized via the ring-opening mechanism with a rare earth solid superacid as a catalyst for potential use in vinyl synthesis.
Octamethylcyclotetrasiloxane can also be used as a probe fluid for nuclear magnetic resonance cryoporometry (NMRC) to analyze pore size.
The chemical vapor deposition (CVD) method of Octamethylcyclotetrasiloxane can be used to prepare siloxane-based thin films.
Production and polymerization of octamethylcyclotetrasiloxane: commercially, Octamethylcyclotetrasiloxane is produced from dimethyldichlorosilane.
Hydrolysis of the dichloride produces a mixture of cyclic dimethylsiloxanes and polydimethylsiloxane.
From this mixture, cyclic siloxanes, including Octamethylcyclotetrasiloxane, can be removed by distillation.
Octamethylcyclotetrasiloxane is classified as a volatile organic compound (VOC).
Octamethylcyclotetrasiloxane are chemicals that can easily evaporate into the air at room temperature and can contribute to the formation of ground-level ozone and smog.
Ground-level ozone is a major component of air pollution and can have negative effects on human health and the environment.
There has been concern about the potential for octamethylcyclotetrasiloxane to bioaccumulate in aquatic organisms.
Bioaccumulation refers to the process by which a substance accumulates in the tissues of living organisms over time, often moving up the food chain.
Octamethylcyclotetrasiloxane can break down in the environment, it can also persist to some extent, potentially leading to its accumulation in aquatic ecosystems.
Uses Of Octamethylcyclotetrasiloxane:
Octamethylcyclotetrasiloxane is used as a monomer in the production of silicone polymers and as an intermediate in the production of other organosilicon substances.
Further Octamethylcyclotetrasiloxane finds its application in electronics, textiles, personal care products and household care products.
Polydimethylsiloxane by the Polymerization of Octamethylcyclotetrasiloxane: To a resin flask equipped with a thermometer, stirrer, and reflux eondenser is added 1000 gm of octamethylcyclotetrasiloxane.
The siloxane is heated to 165°C, and then 0.14gm of a potassium hydroxide-isopropanol complex (neutral equivalent = 193.5) is added to give a Si : Κ ratio of 4470:1. In 25 min the stirrer begins to stall, and the polymer is now heated for 3(1/2) hr at 150°C to complete polymerization.
The resulting polymer has an intrinsic viscosity of 1.5 dl/gm corresponding to a molecular weight of 804,600.
Octamethylcyclotetrasiloxane is used to prepare silicone oil, silicone rubber and silicone resin having different degrees of polymerization through ring opening and polymerizing.
Octamethylcyclotetrasiloxane is also widely used in various fields viz. construction, electronics, textile, automobile, personal care, food, and machining.
Octamethylcyclotetrasiloxane is an organometallic reagent utilized for the preparation of siloxane polymers having high surface-hydrophobicity restoration.
Octamethylcyclotetrasiloxane is commonly used in personal care products such as shampoos, conditioners, lotions, and creams.
Octamethylcyclotetrasiloxane functions as a viscosity regulator, emollient, and skin conditioning agent, helping to improve the texture and feel of products.
Octamethylcyclotetrasiloxane is used as a building block in the synthesis of various silicone polymers.
Octamethylcyclotetrasiloxane can be polymerized to form longer siloxane chains, which have a wide range of applications, including in medical devices, sealants, adhesives, and coatings.
Octamethylcyclotetrasiloxane's used in the textile industry as a softening agent for fabrics, providing a smoother feel and reducing static cling.
Octamethylcyclotetrasiloxane can be found in heat transfer fluids used in electronic devices to dissipate heat and maintain optimal operating temperatures.
Octamethylcyclotetrasiloxane's also used in the manufacturing of certain types of electronic components.
Octamethylcyclotetrasiloxane's used in automotive care products such as car waxes, polishes, and tire treatments to enhance the appearance and protect surfaces.
Octamethylcyclotetrasiloxane is used as a lubricant in various industrial processes, as well as in mold release agents for plastic and rubber manufacturing.
Octamethylcyclotetrasiloxane can be polymerized through ring opening mechanism with a rare earth solid super acid as a catalyst for potential usage in the synthesis of vinyl coated polydimethylsiloxane (PDMS).
Octamethylcyclotetrasiloxane may also be used as a probe liquid for nuclear magnetic resonance cryoporometry (NMRC) to analyze the pore size distribution (PSD) of oil-bearing tight sandstone.
Chemical vapor deposition (CVD) of D4 may be utilized for the preparation of siloxane based thin films.
Octamethylcyclotetrasiloxane is used in the following products: cosmetics and personal care products, washing and cleaning products, polishes and waxes, inks and toners.
Other releases of this substance into the environment are likely to result from: indoor use (e.g. machine washes/detergents, automotive care products, paints and coatings or adhesives, fragrances and air fresheners) and outdoor use.
Octamethylcyclotetrasiloxane is used as a monomer in the production of silicone polymers and as an intermediate in the production of silicone polymers.
Octamethylcyclotetrasiloxane can be used in the manufacture of silicone-based polymers for use in medical devices and is used in personal Care products.
Octamethylcyclotetrasiloxane is used to prepare different grades of silicone oil, silicone rubber and silicone resin.
Octamethylcyclotetrasiloxane is also widely used in various fields. It is also used in construction, electronics, textiles, automobiles, personal care, food and processing.
Octamethylcyclotetrasiloxane is an organometallic reagent used in the preparation of siloxane polymers with high properties.
Octamethylcyclotetrasiloxane, D4 is an industrial product used in many applications, especially cosmetic products.
Polymers are also used in pure form of octamethylcyclotetrasiloxane and in admixture with other siloxanes.
Octamethylcyclotetrasiloxane is a cyclic organic silicone material that can be used as a monomer in its production.
Octamethylcyclotetrasiloxane is used as a monomer in the production of silicone polymers and as an intermediate in the production of silicone polymers.
In addition, Octamethylcyclotetrasiloxane finds application in electronics, textiles, personal care products and household appliances.
Octamethylcyclotetrasiloxane is widely used in cosmetics.
Octamethylcyclotetrasiloxane is used to make methyl silicone oils, silicone fluids and elastomers.
Octamethylcyclotetrasiloxane is also used in various applications such as fermentation processes, instant coffee.
Octamethylcyclotetrasiloxane uses and applications include: Silicone oils; methyl silicone oils; synthesis; reagent; plasticizer for cosmetics, hair care products, skin care products; antiperspirants and deodorants; cleaning solvent; binder; blocking agent; release agent; it is a lubricant.
Octamethylcyclotetrasiloxane (D4) is an odorless, colorless, non-oily silicone fluid primarily used for making other silicones.
During this production process, almost all of the material is consumed and very little material is consumed.
In a small handful of personal care products, Octamethylcyclotetrasiloxane can be used as an additive with a specific effect.
Cyclic siloxane Octamethylcyclotetrasiloxane and linear siloxane hexamethyldisiloxane have numerous industrial uses.
In addition, Octamethylcyclotetrasiloxane finds application in electronics, textiles, personal care products and home care products.
Octamethylcyclotetrasiloxane is a cyclic organic silicone material that can be used as a monomer in its production.
Octamethylcyclotetrasiloxane is used in cosmetics such as foundations, lipsticks, and eyeshadows to improve their texture and spreadability.
Octamethylcyclotetrasiloxane can also give products a smooth, silky feel.
Octamethylcyclotetrasiloxane's used in shampoos, conditioners, and styling products to enhance the smoothness and manageability of hair.
Octamethylcyclotetrasiloxane can help reduce frizz and provide a soft, silky texture.
Octamethylcyclotetrasiloxane serves as a building block in the production of longer silicone polymers.
These polymers find applications in medical devices, adhesives, sealants, and coatings due to their heat resistance, electrical insulating properties, and durability.
In the textile industry, Octamethylcyclotetrasiloxane is used as a softening agent for fabrics, giving them a smoother and more luxurious feel.
Octamethylcyclotetrasiloxane can also help reduce static cling.
Octamethylcyclotetrasiloxane is used in automotive care products such as waxes, polishes, and tire treatments to enhance the appearance and protect surfaces from environmental elements.
Octamethylcyclotetrasiloxane's used as a lubricant and anti-stick agent in various industrial processes, including plastic and rubber manufacturing.
Octamethylcyclotetrasiloxane is used as a heat transfer fluid to dissipate heat from electronic components, helping to maintain optimal operating temperatures.
Octamethylcyclotetrasiloxane's also used in the manufacturing of certain electronic devices and components.
Octamethylcyclotetrasiloxane can be found in some medical and healthcare products due to its lubricating properties and inert nature. It may be used in certain medical devices and equipment.
In the construction and manufacturing sectors, Octamethylcyclotetrasiloxane can be used in the formulation of adhesives and sealants to enhance their properties and improve application characteristics.
Octamethylcyclotetrasiloxane's used in certain cleaning products, polishes, and surface treatments to provide a protective layer and enhance shine.
Octamethylcyclotetrasiloxane can be found in some personal lubricants due to its lubricating properties.
Octamethylcyclotetrasiloxane's used as a component in dielectric fluids, which are used to insulate and cool electrical equipment.
Health Hazard Of Octamethylcyclotetrasiloxane:
Octamethylcyclotetrasiloxane (D4) can interfere with the body’s hormones.
In animals, it can affect the reproductive system.
Octamethylcyclotetrasiloxane is classified as a category 1 endocrine disruptor by the European Commission.
The Global Harmonized System Label Requirements classified Octamethylcyclotetrasiloxane as suspected to produce reproductive toxicity.
Octamethylcyclotetrasiloxane was added to the Toxic Substances Control Act work plan due to reproductive toxicity, moderate environmental persistence, and high bioaccumulation potential.
Adverse reproductive effects including estrogenic effects have been observed in rodents.
The European Chemicals Agency characterized Octamethylcyclotetrasiloxane as a persistent, bioaccumulative, and toxic chemical, and designated Octamethylcyclotetrasiloxane as a Substance of Very High Concern.
Environmental Impact Of Octamethylcyclotetrasiloxane:
Octamethylcyclotetrasiloxane is considered a volatile compound, which means it can evaporate and contribute to air pollution.
There have been concerns about its potential persistence in the environment and its potential to bioaccumulate in aquatic organisms.
Regulatory agencies such as the U.S. Environmental Protection Agency (EPA) and the European Chemicals Agency (ECHA) have evaluated the safety of Octamethylcyclotetrasiloxane.
In some regions, there are restrictions or limitations on its use in certain types of consumer products.
Some studies have raised concerns about potential health effects associated with exposure to Octamethylcyclotetrasiloxane, including its possible role as an endocrine disruptor.
However, the scientific consensus on its health impacts is still evolving, and more research is needed to fully understand its effects on human health.
Octamethylcyclotetrasiloxane (D4) can interfere with the body’s hormones.
Octamethylcyclotetrasiloxane can affect the reproductive system
Synonyms Of Octamethylcyclotetrasiloxane:
OCTAMETHYLCYCLOTETRASILOXANE
556-67-2
Cyclotetrasiloxane, octamethyl-
2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
Oktamethylcyklotetrasiloxan
Cyclic dimethylsiloxane tetramer
OMCTS
NUC silicone VS 7207
Union carbide 7207
Silicone SF 1173
Oktamethylzyklotetrasiloxan
Cyclomethicone 4
C8H24O4Si4
CCRIS 1327
HSDB 6131
Oktamethylcyklotetrasiloxan [Czech]
EINECS 209-136-7
KF 994
NSC 345674
SF 1173
UC 7207
VS 7207
BRN 1787074
UNII-CZ227117JE
DTXSID7027205
CHEBI:25640
CZ227117JE
2,2,4,4,6,6,8,8-octamethyl-1,3,5,7,2,4,6,8-tetroxatetrasilocane
NSC-345674
EC 209-136-7
DTXCID107205
MFCD00003269
CAS-556-67-2
octamethyl cyclotetrasiloxane
bmse000765
octamethyl-cyclotetrasiloxane
SCHEMBL18354
BIDD:ER0157
Dimethylsiloxane Cyclic Tetramer
CHEMBL1869229
CYCLOTETRASILOXANE [INCI]
HMMGMWAXVFQUOA-UHFFFAOYSA-
OCTAMETHYCYCLOTETRASILOXANE
C8-H24-O4-Si4
D4 (Octamethylcyclotetrasiloxane)
HMMGMWAXVFQUOA-UHFFFAOYSA-N
Octamethylcyclotetrasiloxane, 98%
CYCLOMETHICONE 4 [USP-RS]
Octamethyl-cyclotetrasiloxane (D4)
Tox21_201398
Tox21_300547
CO9810
NSC345674
AKOS008901191
OCTAMETHYLCYCLOTETRASILOXANE [MI]
NCGC00164099-01
NCGC00164099-02
NCGC00164099-03
NCGC00254406-01
NCGC00258949-01
LS-58853
OCTAMETHYLCYCLOTETRASILOXANE [HSDB]
CS-0213747
FT-0688100
O0142
O9810
F83065
Octamethylcyclotetrasiloxane, analytical standard
Ciclotetrasiloxano, 2,2,4,4,6,6,8,8-octametil-
Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octamethyl-
octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
Q2013804
C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1
2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane #
Cyclomethicone 4, United States Pharmacopeia (USP) Reference Standard
D4 Cyclomethicone, Pharmaceutical Secondary Standard; Certified Reference Material
d-4
InChI=1/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3
