TRISILOXANE

Trisiloxane is a linear siloxane. 
Trisiloxane acts as a good antifoaming and skin conditioning agent in personal care applications.
Trisiloxane surfactants or polyetherdimethylsiloxanes (PEMS), often referred to as superspreaders or superwetters, are added to pesticides to enhance the activity and the rainfastness of the active substance by promoting rapid spreading over the hydrophobic surfaces of leaves. 

CAS Number : 107-51-7
EC  Number : 203-497-4
EINECS/ELINCS No : 203-497-4
Molecular Formula    :  C8H24O2Si3
Molecular Weight    :  236.53

These surfactants are also added to a range of other products including cosmetics, polyurethane foams, textiles and fibers, paints and coatings, and car care products.
Trisiloxane is an organosiloxane that is trisiloxane in which all the hydrogens have been replaced by methyl groups.

Use and Manufacturing of Trisiloxane
Used as a base for extreme temperature silicone oils/fluids and as a foam suppressant in petroleum lubricating oils; [Merck Index] Used mainly to make polydimethylsiloxane (PDMS) polymers, oligomers, and mixtures; Also used to make basic chemicals, paints, coatings, adhesives, soaps, cleaning compounds, toiletries, plastics, semiconductors, and other electronic components, and in building construction, lubricants, diluents, solvents, and cosmetics

Industry Uses of Trisiloxane
-Heat transferring agent
-Intermediate
-Other

Household Products of Trisiloxane
Household & Commercial/Institutional Products
Information on 28 consumer products that contain Trisiloxane in the following categories is provided:
-Auto Products
-Personal Care

General Manufacturing Information    
Industry Processing Sectors
-All Other Basic Inorganic Chemical Manufacturing
-All Other Chemical Product and Preparation Manufacturing
-Other (requires additional information)

Trisiloxane is a modified polysiloxane having excellent cosmetic worthy properties with uses in personal care industry. 
Soluble in water, alcohol, and hydro-alcoholic systems. 
Trisiloxane acts as a surface tension depressant, wetting agent, emulsifier and foam builder in a wide variety of cosmetic and personal care products, including hair sprays, shampoos, skin care, lotions, perfumes and shaving soaps. 
Trisiloxane gives stable foam. 
In conditioning shampoos, Trisiloxane provides wet and dry combing in addition to imparting a silky, soft feel to the hair without build up even after repeated wash cycles. 
Trisiloxane provides the properties of conditioning, emolliency and de-tackification in both body and hair shower products.

Properties of Trisiloxane
Appearance    : Clear to pale yellow colored liquid
Viscosity    : 200 – 5000 cPs.
% Active Content :     100
R.I.at 25°C     :  1.440 – 1.460

FEATURES of Trisiloxane
-Excellent compatibility with organic solvents and easy to be mixed with such formulations
-Excellent compatibility various enamels and lacquers
-Foam enhancer & forms stable foam
-Excellent foam builder
-Reduces surface tension
-Wetting effect

Trisiloxane is a lipophilic benzotriazole derivative marketed as Mexoryl XL by L'Oréal and is used in sunscreens to absorb UV radiation. 
Trisiloxane is a broad-spectrum UV absorber with two absorption peaks, one at 303 nm (UVB) and one at 344 nm (UVA). 
Just like Mexoryl SX (ecamsule), Trisiloxane is used exclusively in products by L'Oréal owned brands. 
Trisiloxane and ecamsule are often used together, because they show a synergistic effect in protection.

Trisiloxane has reported cosmetic use including:
in antiperspirants and deodorants (in aerosol or gel forms at concentrations of 1–5 % as listed on the US HPD); and as anti-foaming and skin conditioning agents in body and hand preparations, colognes, eye lotions, eye makeup preparations, foundations, hair conditioners, and in indoor tanning preparations.

Application of Trisiloxane
Trisiloxane is used as a linear inhibitor in the formulating of two-part Silicone RTV-2 Addition Curing systems. 
Because of the large vinyl content, small amounts are very effective in retarding and controlling the working time or pot life of two-part Addition-Curing Silicone RTVs. 
Also, due to its boiling point of 139c, it is easily volatilized during curing. 
A suggested starting formulation is to use 0.25 to 0.50 parts by weight of USi-O6214 with 100 parts of the Base polymer containing the platinum catalyst.

Trisiloxane is an industrial chemical. 
Trisiloxane is not expected to occur naturally in the environment.
Trisiloxane is formed as a reaction by-product (left over from manufacturing processes) in adhesives, paint and coating additives, and cosmetics including some personal care products.
Trisiloxane is not manufactured in Canada but is imported into Canada as an impurity in end-use products.

Trisiloxane is a dispersive solid-phase extraction (DSPE) sorbent that has been used in the separation of sesquiterpene lactones. 
Trisiloxane has shown to be effective in the pre-treatment of samples for GC/MS analysis, although it has only been used successfully with fatty acids and potassium dichromate. 
Trisiloxane is lipophilic in nature and can be absorbed by skin cells. 
Trisiloxane also absorbs UVA radiation, which may have an adverse effect on DNA synthesis or cell division.

Substance identity

EC / List no.: 203-497-4
CAS no.: 107-51-7
Mol. formula: C8H24O2Si3

Hazard classification & labelling of Trisiloxane
Warning! According to the classification provided by companies to ECHA in REACH registrations this substance is a flammable liquid and vapour.

About Trisiloxane
Trisiloxane is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 1 000 to < 10 000 tonnes per annum.
Trisiloxane is used by consumers, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.

Consumer Uses of Trisiloxane
Trisiloxane is used in the following products: cosmetics and personal care products and washing & cleaning products.
Other release to the environment of Trisiloxane is likely to occur from: indoor use as processing aid and outdoor use as processing aid.

Article service life of Trisiloxane
Release to the environment of Trisiloxane can occur from industrial use: of articles where the substances are not intended to be released and where the conditions of use do not promote release and industrial abrasion processing with low release rate (e.g. cutting of textile, cutting, machining or grinding of metal).
ECHA has no public registered data indicating whether or into which articles the substance might have been processed.

Widespread uses by professional workers of Trisiloxane
Trisiloxane is used in the following products: cosmetics and personal care products, polishes and waxes and washing & cleaning products.
ECHA has no public registered data on the types of manufacture using Trisiloxane. 
Other release to the environment of Trisiloxane is likely to occur from: indoor use as processing aid and outdoor use as processing aid.

Formulation or re-packing of Trisiloxane
Trisiloxane is used in the following products: coating products, washing & cleaning products, adhesives and sealants, cosmetics and personal care products, polishes and waxes and pharmaceuticals.
Release to the environment of Trisiloxane can occur from industrial use: formulation of mixtures and formulation in materials.

Uses at industrial sites of Trisiloxane
Trisiloxane is used in the following products: coating products, washing & cleaning products, adhesives and sealants, heat transfer fluids, laboratory chemicals, polymers and non-metal-surface treatment products.
Trisiloxane is used in the following areas: building & construction work and scientific research and development.
Trisiloxane is used for the manufacture of: electrical, electronic and optical equipment, machinery and vehicles, chemicals, plastic products and rubber products.
Release to the environment of Trisiloxane can occur from industrial use: in the production of articles, in processing aids at industrial sites, of substances in closed systems with minimal release and as an intermediate step in further manufacturing of another substance (use of intermediates).

Manufacture of Trisiloxane
Release to the environment of Trisiloxane can occur from industrial use: manufacturing of the substance.

Synonyms:
Octamethyltrisiloxane
Octamethyltrisiloxane
octamethyltrisiloxane
Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl-
1,1,1,3,3,5,5,5-Octamethyltrisiloxane
2,2,4,4,6,6-hexamethyl-3,5-dioxa-2,4,6-trisilaheptane
dimethyl-bis(trimethylsilyloxy)silane
Octamethyltrisiloxane
octamethyltrisiloxane
Octamethyltrisiloxane
trisiloxane, Octamethyl-
BRB DM 1cSt
BRB Silicone Oil 1 cSt
dimethylpolysiloxane-1cs
Octamethyltrisiloxane
107-51-7
1463470-58-7
OCTAMETHYLTRISILOXANE
107-51-7
Trisiloxane, octamethyl-
Poly(dimethylsiloxane)
1,1,1,3,3,5,5,5-Octamethyltrisiloxane
Dimeticone
dimethyl-bis(trimethylsilyloxy)silane
Dimethicone 350
63148-62-9
Pentamethyl(trimethylsilyloxy)disiloxane
Dimethylbis(trimethylsiloxy)silane
9G1ZW13R0G
CHEBI:9147
Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl-
Dimethylbis(trimethylsilyloxy)silane
Dimethicones
Poly(dimethylsiloxane), hydroxy terminated
MFCD00084411
MFCD00134211
MFCD00148360
CCRIS 3198
Poly(dimethylsiloxane), trimethylsiloxy terminated
EINECS 203-497-4
dimeticonum
UNII-9G1ZW13R0G
Dimeticona
FRD 20
Ctamethyltrisiloxane
MFCD00008264
Pentamethyl(trimethylsiloxy)disiloxane
octamethyl-trisiloxane
PDMS
dimethicone macromolecule
VOLASIL DM-1
Silicon Oil for Oil Bath
TRISILOXANE [INCI]
DM-FLUID 1.0CS
EC 203-497-4
Octamethyltrisiloxane, 98%
DSSTox_CID_20710
DSSTox_RID_79558
DSSTox_GSID_40710
OS 20 (SILOXANE)
SCHEMBL23459
Siliconoil Pharma 100 cSt.
Dimethyl polysiloxane, bis(trimethylsilyl)-terminated
Dow Corning High-Vacuum Grease
CHEMBL2142985
DTXSID9040710
CHEBI:31498
CXQXSVUQTKDNFP-UHFFFAOYSA-
KF 96A1
OCTAMETHYLTRISILOXANE [MI]
dimethylbis(trimethylsiloxy)siliane
Polydimethylsiloxane, 1000 cSt.
alpha-(Trimethylsilyl)-omega-methylpoly(oxy(dimethylsilylene))
[(CH3)3SiO]2Si(CH3)2
Tox21_301002
CO9816
MFCD00165850
Silane, dimethylbis(trimethylsiloxy)-
AKOS015840180
ZINC169747808
Antifoam compound for anhydrous systems
FS-4459
NCGC00164100-01
NCGC00164100-02
NCGC00254904-01
CAS-107-51-7
DB-040764
FT-0631598
FT-0696355
O0257
O9816
C07261
D91850
S12475
A801717
XIAMETER(R) PMX-200 SILICONE FLUID 1 CST
J-001906
Poly(dimethylsiloxane), viscosity 1.0 cSt (25 C)
Q2013799
XIAMETER(R) PMX-200 Silicone Fluid 20 CS
2,2,4,4,6,6-hexamethyl-3,5-dioxa-2,4,6-trisilaheptane
Polydimethylsiloxane, 20,000 cSt. trimethoxysilyl terminated
Polydimethylsiloxane, extreme low volatility, viscosity 1000 cSt.
Intermediate viscosity polydimethylsiloxane antifoam emulsion, 20% active, viscosity 1500cst
Intermediate viscosity polydimethylsiloxane antifoam emulsion, 30% active, viscosity 1500cst
Polydimethylsiloxane, trimethylsiloxy terminated, reduced volatility, viscosity 20 cSt.
28349-86-2
Intermediate viscosity polydimethylsiloxane antifoam emulsion, 10% active, viscosity 1000-2000cst
Intermediate viscosity polydimethylsiloxane antifoam emulsion, 10% active, viscosity 800-2000cst
Intermediate viscosity polydimethylsiloxane antifoam emulsion, 20% active, viscosity 1000-2000cst
Intermediate viscosity polydimethylsiloxane antifoam emulsion, 30% active, viscosity 1000-2000cst
Polydimethylsiloxane, trimethylsiloxy terminated, extreme low volatility, viscosity 12.500 cSt.
Octamethyltrisiloxane [ACD/IUPAC Name]
1,1,1,3,3,5,5,5-Octamethyltrisiloxane
107-51-7 [RN]
2,2,4,4,6,6-hexamethyl-3,5-dioxa-2,4,6-trisilaheptane
203-497-4 [EINECS]
9G1ZW13R0G
MFCD00008264 [MDL number]
Octamethyltrisiloxan [German] [ACD/IUPAC Name]
Octaméthyltrisiloxane [French] [ACD/IUPAC Name]
Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl- [ACD/Index Name]
UNII:9G1ZW13R0G
?-Trimethylsilyl-?-methylpoly[oxy(dimethylsilanediyl)]
[(CH3)3SiO]2Si(CH3)2 [Formula]
[107-51-7] [RN]
Dimethylbis(trimethylsiloxy)silane
DIMETHYLBIS(TRIMETHYLSILYLOXY)SILANE
dimethylpolysiloxane, technical
dimeticona; dimeticone; dimeticonum
Dow Corning High-Vacuum Grease
EINECS 203-497-4
FS-4459
melting point bath oil
MFCD00132673
MFCD00148360
NCGC00164100-01
octamethyl trisiloxane
octamethyltrisiloxane, ???
Polydimethylsiloxane, 1000 cSt.
Silane, dimethylbis(trimethylsiloxy)-
silicone fluid, 100
silicone fluid, 1000
silicone fluid, 500
UNII-9G1ZW13R0G
viscosity 1.0 cSt.
viscosity 1.000.000 cSt.
viscosity 1.5 cSt.
viscosity 10 cSt.
viscosity 100 cSt.
viscosity 100.000 cSt.
viscosity 10000 cSt.
viscosity 12.500 cSt.
viscosity 2.0 cSt.
viscosity 2.500.000 cSt.
viscosity 20 cSt.
viscosity 20.000 cSt.
viscosity 20.000.000 cSt.
viscosity 200 cSt.
viscosity 3.0 cSt.
viscosity 300.000 cSt.
viscosity 30000 cSt.
viscosity 350 cSt.
viscosity 5.0 cSt.
viscosity 5.000 cSt.
viscosity 50 cSt.
viscosity 500 cSt.
viscosity 60.000 cSt.
viscosity 600.000 cSt.
viscosity 60000 cSt.
viscosity 7.0 cSt.
1753063 [DBID]
235709_ALDRICH [DBID]
469319_ALDRICH [DBID]
74815_FLUKA [DBID]
C07261 [DBID]
CCRIS 3198 [DBID]
CO9816 [DBID]
FRD 20 [DBID]
O9816 [DBID]