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Dimethicone 350 is polydimethylsiloxane, also known as dimethylpolysiloxane or dimethicone.
Dimethicone 350 is a silicone polymer with a wide variety of uses, from cosmetics to industrial lubrication.
Dimethicone 350 is particularly known for its unusual rheological properties.
Dimethicone 350 is optically clear.
Dimethicone 350 is generally inert.
Dimethicone 350 is non-toxic and non-flammable.
Dimethicone 350 is one of several types of silicone oil.
CAS Number: 9006-65-9
Molecular Formula: (C2H6OSi)nC4H12Si
The chemical formula of PDMS is CH3[Si(CH3)20]nSi(CH3)3.
Here n is the number of repeated monomer [Si(CH3) 20] units.
Industrial synthesis can begin with the following net reaction from dimethyldichlorosilane and water;
The polymerization reaction develops hydrochloric acid.
A process has been developed for medical and domestic applications in which the chlorine atoms in the silane precursor are replaced with acetate groups.
In this case, polymerization produces acetic acid, which is less chemically aggressive than HCl.
As a side effect, the curing process is also much slower in this case.
Acetate is used in consumer applications such as silicone caulk and adhesives.
Hydrolysis of Si(CH3)2Cl2 produces a polymer terminated in silanol groups (−Si(CH3) 2OH).
Dimethicone is well characterized with a low polydispersity index and high homogeneity.
Dimethicone 350 is produced by controlled anionic ring-opening polymerization of hexamethylcyclotrisiloxane.
Using this methodology, it is possible to synthesize linear block copolymers, heterostranded star-shaped block copolymers, and many other macromolecular architectures.
The polymer is produced in a variety of viscosities, from a thin pourable liquid to a thick rubbery semi-solid.
Dimethicone 350 is viscoelastic.
Dimethicone 350 acts as a viscous liquid similar to honey.
At short flow times, dimethicone behaves as an elastic solid, similar to rubber.
Dimethicone 350 may cause mold growth upon contact with any substance.
Dimethicone 350 provides a higher hardness.
dimethicone 350 is hydrophobic.
Plasma oxidation can be used to alter the surface chemistry by adding silanol groups to the surface.
Dimethicone 350 makes its surface hydrophilic, allowing water to wet it.
Dimethicone 350 can be further functionalized by reacting with trichlorosilanes.
Regardless of whether Dimethicone 350 is air or water, restoring the hydrophobicity of the surface is inevitable.
Dimethicone 350 oxidized surface is stable in air for approximately 30 minutes.
Techniques such as dynamic surface modification with Dimethicone 350-embedded surfactants can be used.
Dimethicone 350 derivatives are common surfactants.
Dimethicone 350 is a component of antifoams.
Dimethicone 350, in a modified form, is used as a herbicide penetrant.
Dimethicone 350 is a critical ingredient.
Dimethicone 350 is used in many areas.
Dimethicone 350 is used in active silicone fluid in automotive viscous limited slip differentials and couplings.
Dimethicone 350 has a high rate of reflecting sunlight and radiating heat.
Dimethicone 350 is a common surface material used in passive daytime radiative cooling as a broadband emitter.
Dimethicone 350 is added as an additive to many care products.
Dimethicone 350 also has anxiety-inducing properties.
Dimethicone 350 can be used as a sorbent for headspace in food materials.
Dimethicone 350 comes in various viscosities.
Dimethicone 350 is a medium viscosity of 350 centistokes, which offers excellent barrier properties when used in skin protective formulations.
reduces stickiness.
Dimethicone 350 offers softening properties when used in hair and skin care applications.
Dimethicone 350 can be added to any cosmetic product and listed in descending order on the ingredients label.
produced to yield essentially linear polymers over a wide range of average kinematic viscosities.
Dimethicone 350 is a clear, colorless, medium viscosity polydimethylsiloxane polymer.
Dimethicone 350 is highly soluble in organic solvents.
Dimethicone 350 is easily emulsified in water with standard emulsifiers.
Dimethicone 350 can be used to desoap creams and lotions.
Dimethicone 350 spreads easily on both skin and hair, protecting the skin and giving a soft, velvety skin feeling.
Dimethicone 350 is non-comedogenic.
Therefore, Dimethicone 350 helps improve the skin barrier and protects it from environmental damage.
Dimethicone 350 prevents moisture loss in skin and hair.
Dimethicone 350 keeps the hair moisturized and frizz-free.
Dimethicone 350 works as an antifoam agent when used as a base ingredient in various formulations.
Dimethicone 350 works by acting as an emulsifier and prevents the product from separating.
Dimethicone 350 is insoluble in water and oils and soluble in mineral spirits, acetone, ethanol, glycol and fatty acids.
Dimethicone 350 can also be used for hair protection.
SYNONYMS
OCTAMETHYLTRISILOXANE
107-51-7
Trisiloxane, octamethyl-
1,1,1,3,3,5,5,5-Octamethyltrisiloxane
dimethyl-bis(trimethylsilyloxy)silane
Dimeticone
63148-62-9
Dimethicone 350
Pentamethyl(trimethylsilyloxy)disiloxane
Dimethylbis(trimethylsiloxy)silane
9G1ZW13R0G
CHEBI:9147
DTXSID9040710
Dimethicones
Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl-
MFCD00084411
MFCD00148360
CCRIS 3198
EINECS 203-497-4
dimeticonum
UNII-9G1ZW13R0G
Dimeticona
FRD 20
Ctamethyltrisiloxane
MFCD00008264
Pentamethyl(trimethylsiloxy)disiloxane
octamethyl-trisiloxane
dimethicone macromolecule
VOLASIL DM-1
TRISILOXANE [INCI]
EC 203-497-4
Octamethyltrisiloxane, 98%
OS 20 (SILOXANE)
SCHEMBL23459
Dow Corning High-Vacuum Grease
CHEMBL2142985
DTXCID7020710
CHEBI:31498
CXQXSVUQTKDNFP-UHFFFAOYSA-
KF 96A1
OCTAMETHYLTRISILOXANE [MI]
CXQXSVUQTKDNFP-UHFFFAOYSA-N
dimethylbis(trimethylsiloxy)siliane
Dimethylbis(trimethylsilyloxy)silane
[(CH3)3SiO]2Si(CH3)2
Tox21_301002
CO9816
MFCD00134211
MFCD00165850
Silane, dimethylbis(trimethylsiloxy)-
AKOS015840180
FS-4459
NCGC00164100-01
NCGC00164100-02
NCGC00254904-01
CAS-107-51-7
FT-0631598
FT-0696355
O0257
O9816
C07261
D91850
S12475
A801717
J-001906
Q2013799
2,2,4,4,6,6-hexamethyl-3,5-dioxa-2,4,6-trisilaheptane
InChI=1/C8H24O2Si3/c1-11(2,3)9-13(7,8)10-12(4,5)6/h1-8H3
28349-86-2
