Octamethyltrisiloxane supplier

Name
POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED
EINECS 203-497-4
CAS No. 107-51-7
Article Data54
CAS DataBase
Density 0.843 g/cm³
Solubility 34μg/L at 23℃
Melting Point -82 °C
Formula C₈H₂₄O₂Si₃
Boiling Point 152.999 °C at 760 mmHg
Molecular Weight 236.534
Flash Point 55.016 °C
Transport Information UN 1993
Appearance clear colourless liquid
Safety 23-24/25
Risk Codes 10
Molecular Structure
Hazard Symbols
Synonyms Trisiloxane,octamethyl- (6CI,8CI,9CI);1,1,1,3,3,5,5,5-Octamethyltrisiloxane;Dimethylbis(trimethylsiloxy)silane;FRD 20;KF 96A1cs;KF 96L1.0;OS 20;OS 20(siloxane);Octamethyltrisiloxane;Pentamethyl(trimethylsiloxy)disiloxane;Pentamethyl(trimethylsilyloxy)disiloxane;
PSA 18.46000
LogP 3.39120

Synthetic route

: 75-77-4
chloro-trimethyl-silane

: 18090-13-6, 52698-97-2, 111930-73-5
sodium dimethylsiloxanediolate

: 107-51-7
Octamethyltrisiloxane

Conditions

Conditions	Yield
In hexane at -40 - -30℃;	100%

: 107-46-0
Hexamethyldisiloxane

: 75-78-5
dimethylsilicon dichloride

A: 75-77-4
chloro-trimethyl-silane

B: 107-51-7
Octamethyltrisiloxane

C: 141-62-8
decamethyltetrasiloxane

D: 141-63-9
dodecamethylpentasiloxane

Conditions

Conditions	Yield
at 60 - 65℃; for 10h; Further byproducts given;	A 51% B n/a C n/a D n/a

...Expand

: 1825-62-3
ethyl trimethylsilyl ether

: 75-78-5
dimethylsilicon dichloride

: 107-51-7
Octamethyltrisiloxane

Conditions

Conditions	Yield
Stage #1: ethyl trimethylsilyl ether With sodium hydroxide In pyridine at 70℃; for 1.5h; Stage #2: dimethylsilicon dichloride In benzene	48%

: 75-77-4
chloro-trimethyl-silane

: 2943-62-6
1-chloro-1,1,3,3,3-pentamethyldisiloxane

A: 107-51-7
Octamethyltrisiloxane

B: 4342-25-0
1,2-Bis(trimethylsiloxy)-1,1,2,2-tetramethyl-disilan

C: 56240-55-2
1-Trimethylsiloxy-pentamethyl-disilan

Conditions

Conditions	Yield
With lithium In tetrahydrofuran at 20℃; for 96h; Substitution;	A n/a B n/a C 46%

...Expand

: 1450-14-2
1,1,1,2,2,2-hexamethyldisilane

A: 75-76-3
tetramethylsilane

B: 107-46-0
Hexamethyldisiloxane

C: 107-51-7
Octamethyltrisiloxane

D: 541-05-9
Hexamethylcyclotrisiloxane

E: 141-62-8
decamethyltetrasiloxane

Conditions

Conditions	Yield
With carbon monoxide; nickel at 200℃; under 750.06 Torr; for 2h; Product distribution; various reagents and reaction conditions;	A n/a B 25.8% C n/a D n/a E n/a

...Expand

: 2943-62-6
1-chloro-1,1,3,3,3-pentamethyldisiloxane

A: 107-51-7
Octamethyltrisiloxane

B: 4342-25-0
1,2-Bis(trimethylsiloxy)-1,1,2,2-tetramethyl-disilan

Conditions

Conditions	Yield
Stage #1: 1-chloro-1,1,3,3,3-pentamethyldisiloxane With lithium In tetrahydrofuran for 14h; Metallation; Heating; Stage #2: With chloro-trimethyl-silane In tetrahydrofuran at 20℃; for 24h; Condensation;	A n/a B 23%

: 141-62-8
decamethyltetrasiloxane

A: 107-46-0
Hexamethyldisiloxane

B: 107-51-7
Octamethyltrisiloxane

C: 141-63-9
dodecamethylpentasiloxane

Conditions

Conditions	Yield
With molecular sieve at 20 - 100℃; for 0.017 - 24h; Product distribution / selectivity;	A 12.98% B 19.28% C 13.74%
With linear phosphonitrilic chloride; diatomaclous earth (Celite 545) at 20 - 100℃; for 0.017 - 24h; Product distribution / selectivity;	A 15.21% B 18.64% C 12.58%
With dodecylbenzene-sulphonic acid at 120℃; for 4 - 24h; Product distribution / selectivity;	A 11.16% B 15.02% C 12.46%

...Expand

: 99532-16-8
bis(trimethylsiloxy)(trimethylsilyl)methylsilane

A: 1873-88-7
1,1,1,3,5,5,5-heptamethyltrisiloxan

B: 107-51-7
Octamethyltrisiloxane

Conditions

Conditions	Yield
at 850℃;	A 14% B 10%

: 4095-10-7
dimethyldibromosilane

: 107-46-0
Hexamethyldisiloxane

: 107-51-7
Octamethyltrisiloxane

Conditions

Conditions	Yield
With iron(III) chloride

: 4095-10-7
dimethyldibromosilane

: 107-46-0
Hexamethyldisiloxane

A: 107-51-7
Octamethyltrisiloxane

B: 141-62-8
decamethyltetrasiloxane

Conditions

Conditions	Yield
With iron(III) chloride

...Expand

: 107-46-0
Hexamethyldisiloxane

: 556-67-2
octamethylcyclotetrasiloxane

: 107-51-7
Octamethyltrisiloxane

Conditions

Conditions	Yield
With Fuller's Earth

: 93-59-4
Perbenzoic acid

: 3704-44-7
octamethyltrisilane

A: 107-51-7
Octamethyltrisiloxane

B: 65-85-0
benzoic acid

Conditions

Conditions	Yield
In benzene at 20℃; Rate constant;

...Expand

: 1438-82-0
1,1,1,3,3-pentamethyl-1,3-disiloxane

A: 107-46-0
Hexamethyldisiloxane

B: 1873-88-7
1,1,1,3,5,5,5-heptamethyltrisiloxan

C: 107-51-7
Octamethyltrisiloxane

D: 141-62-8
decamethyltetrasiloxane

E: 2895-07-0
1,1,1,3,3,5,5-heptamethyltrisiloxane

F: 77606-50-9
M2DDH

Conditions

Conditions	Yield
With bis(triphenylphosphine)carbonyliridium(I) chloride In benzene at 70℃; for 116h; Product distribution; other siloxanes;

...Expand

: 2943-62-6
1-chloro-1,1,3,3,3-pentamethyldisiloxane

: 2004-14-0
lithium trimethylsilanolate

: 107-51-7
Octamethyltrisiloxane

Conditions

Conditions	Yield
In diethyl ether; benzene at 20℃; Rate constant;

: 3704-44-7
octamethyltrisilane

: 107-51-7
Octamethyltrisiloxane

Conditions

Conditions	Yield
With Perbenzoic acid In benzene at 35 - 45℃;
With Perbenzoic acid In benzene at 35 - 45℃; Rate constant; Kinetics;

: 56240-55-2
1-Trimethylsiloxy-pentamethyl-disilan

: 107-51-7
Octamethyltrisiloxane

Conditions

Conditions	Yield
With Perbenzoic acid In benzene at 25℃; Rate constant; Thermodynamic data; Mechanism; ΔH(excit.), ΔG(excit.), ΔS(excit.);
With Perbenzoic acid In benzene at 35℃; Rate constant;

: C8H24O2Si3*CHF3O3S

: 89-63-4
4-Chloro-2-nitroaniline

A: 107-51-7
Octamethyltrisiloxane

B: 4-Chloro-2-nitro-phenylamine; compound with trifluoro-methanesulfonic acid

Conditions

Conditions	Yield
In benzene at 26.9℃; Equilibrium constant;

...Expand

: 75-77-4
chloro-trimethyl-silane

: 75-78-5
dimethylsilicon dichloride

A: 107-51-7
Octamethyltrisiloxane

B: 541-05-9
Hexamethylcyclotrisiloxane

C: 141-62-8
decamethyltetrasiloxane

D: 556-67-2
octamethylcyclotetrasiloxane

Conditions

Conditions	Yield
With water In toluene at 20℃; for 27h; Further byproducts given. Yields of byproduct given;	A 26 % Chromat. B n/a C n/a D n/a

...Expand

: 75-77-4
chloro-trimethyl-silane

: 75-78-5
dimethylsilicon dichloride

A: 107-51-7
Octamethyltrisiloxane

B: 141-62-8
decamethyltetrasiloxane

C: 556-67-2
octamethylcyclotetrasiloxane

Conditions

Conditions	Yield
With water In toluene at 20℃; for 27h; Yield given. Yields of byproduct given;

...Expand

: 107-46-0
Hexamethyldisiloxane

: 2750-45-0
1,1,1-trichloro-3,3,3-trimethyl-disiloxane

A: 75-77-4
chloro-trimethyl-silane

B: 75-76-3
tetramethylsilane

C: 107-51-7
Octamethyltrisiloxane

D: 2750-44-9
bis-trimethylsiloxy-dichlorosilane

Conditions

Conditions	Yield
at 650℃; for 0.0111111h; Further byproducts given. Title compound not separated from byproducts;

...Expand

: 107-46-0
Hexamethyldisiloxane

: 2750-45-0
1,1,1-trichloro-3,3,3-trimethyl-disiloxane

A: 75-76-3
tetramethylsilane

B: 2943-62-6
1-chloro-1,1,3,3,3-pentamethyldisiloxane

C: 107-51-7
Octamethyltrisiloxane

D: 2750-44-9
bis-trimethylsiloxy-dichlorosilane

E: 1,1,1-trimethyl-3,3,5,5,5-pentachlorotrisiloxane

F: 1,1,1-trichloro-3,3,5,5,5-pentamethyltrisiloxane

Conditions

Conditions	Yield
at 650℃; for 0.0111111h; Product distribution; pyrolysis;

...Expand

: 107-46-0
Hexamethyldisiloxane

: 2750-45-0
1,1,1-trichloro-3,3,3-trimethyl-disiloxane

A: 2943-62-6
1-chloro-1,1,3,3,3-pentamethyldisiloxane

B: 107-51-7
Octamethyltrisiloxane

C: 2750-44-9
bis-trimethylsiloxy-dichlorosilane

D: 1,1,1-trichloro-3,3,5,5,5-pentamethyltrisiloxane

Conditions

Conditions	Yield
at 650℃; for 0.0111111h; Further byproducts given. Title compound not separated from byproducts;

...Expand

: 1825-62-3
ethyl trimethylsilyl ether

: 56428-93-4
pentamethyldisiloxanol

A: 1066-40-6
Trimethylsilanol

B: 107-46-0
Hexamethyldisiloxane

C: 107-51-7
Octamethyltrisiloxane

D: 141-62-8
decamethyltetrasiloxane

E: 13176-70-0
ethoxy pentamethyldisiloxane

Conditions

Conditions	Yield
With bis(trichlorophosphine)iminium hexachlorophosphate In 1,1,2,2-tetrachloroethylene; n-heptane at 25℃; Rate constant; various reagent concentrations, other reagent;

...Expand

: 75-77-4
chloro-trimethyl-silane

: 107-46-0
Hexamethyldisiloxane

A: 2943-62-6
1-chloro-1,1,3,3,3-pentamethyldisiloxane

B: 107-51-7
Octamethyltrisiloxane

C: 541-05-9
Hexamethylcyclotrisiloxane

D: 141-62-8
decamethyltetrasiloxane

E: 556-67-2
octamethylcyclotetrasiloxane

F: 18297-87-5
1-chloroheptamethyltrisiloxane

Conditions

Conditions	Yield
at 675℃; Product distribution;

...Expand

: 107-46-0
Hexamethyldisiloxane

A: 2943-62-6
1-chloro-1,1,3,3,3-pentamethyldisiloxane

B: 107-51-7
Octamethyltrisiloxane

C: 541-05-9
Hexamethylcyclotrisiloxane

D: 2750-45-0
1,1,1-trichloro-3,3,3-trimethyl-disiloxane

E: 18297-87-5
1-chloroheptamethyltrisiloxane

F: 2632-77-1
1,1,1,3-tetrachloro-3,3-dimethyldisiloxane

Conditions

Conditions	Yield
With tetrachlorosilane at 700℃; for 0.0166667h; Product distribution; dependence of the composition of the condensate on the residence time; on the reaction temperature (600-720 deg C); on the ratio of the starting materials at 675 deg C and τ=30 s;

...Expand

: 16029-98-4
trimethylsilyl iodide

: 556-67-2
octamethylcyclotetrasiloxane

A: 107-51-7
Octamethyltrisiloxane

B: 141-62-8
decamethyltetrasiloxane

C: 141-63-9
dodecamethylpentasiloxane

D: 541-02-6
decamethylcyclopentasiloxane

Conditions

Conditions	Yield
at 190℃; for 10h; Yield given; Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

...Expand

: 75-78-5
dimethylsilicon dichloride

A: 107-51-7
Octamethyltrisiloxane

B: 141-62-8
decamethyltetrasiloxane

C: 141-63-9
dodecamethylpentasiloxane

D: 541-02-6
decamethylcyclopentasiloxane

Conditions

Conditions	Yield
With sodium nitrate; 1,1,1,3,3,3-hexamethyl-disilazane at 65℃; for 2h; Yield given; Yields of byproduct given. Title compound not separated from byproducts;
With sodium nitrate; 1,1,1,3,3,3-hexamethyl-disilazane at 20℃; for 2h; Yield given; Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

...Expand

: 75-78-5
dimethylsilicon dichloride

A: 107-51-7
Octamethyltrisiloxane

B: 141-62-8
decamethyltetrasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

D: 107-52-8
tetradecamethylhexasiloxane

Conditions

Conditions	Yield
With sodium nitrate; 1,1,1,3,3,3-hexamethyl-disilazane at 20℃; for 2h; Yield given; Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

...Expand

: 51-92-3
tetramethylammonium

: 556-67-2
octamethylcyclotetrasiloxane

: 7732-18-5
water

: 107-51-7
Octamethyltrisiloxane

Conditions

Conditions	Yield
at 80℃; Aequilibrierung;

...Expand

: 107-51-7
Octamethyltrisiloxane

: 75-76-3
tetramethylsilane

Conditions

Conditions	Yield
With iodine; (3S,3aS,4S,4aS,6S,8aR,8bR,11S)-6,11-dihydroxy-3-methyl-12-methylene-2-oxo-4a,6-ethano-3,8b-prop-1-enoperhydroindeno[1,2-b]furan-4-carboxylic acid Heating;	90%

: 107-51-7
Octamethyltrisiloxane

: 368-47-8
phenyltrifluorosilane

A: 420-56-4
trimethylsilyl fluoride

B: 144090-03-9
1,1,1,3,3-pentamethyl-5,5-difluoro-5-phenyltrisiloxane

Conditions

Conditions	Yield
for 72h; Ambient temperature;	A n/a B 55%

...Expand

: 107-51-7
Octamethyltrisiloxane

: 75-77-4
chloro-trimethyl-silane

Conditions

Conditions	Yield
With zirconium(IV) oxide; ethyl chloromethyl ether In chloroform-d1 at 20℃; for 4h; Reagent/catalyst; Schlenk technique; Inert atmosphere;	43%

: 107-51-7
Octamethyltrisiloxane

: C23H45IrNOP2(1+)*C32H12BF24(1-)

: C27H59IrNO2P2Si3(1+)*C32H12BF24(1-)

Conditions

Conditions	Yield
With tert-butylethylene at 50℃; for 168h;	33%

: 107-51-7
Octamethyltrisiloxane

: 368-44-5
dichloro(fluoro)(phenyl)silane

A: 75-77-4
chloro-trimethyl-silane

B: 1344680-27-8
phenyl(pentamethyldisiloxanyl)fluorochlorosilane

Conditions

Conditions	Yield
at 20℃;	A n/a B 27%

...Expand

: germanium dichloride-1,4-dioxane (1/1)

: 107-51-7
Octamethyltrisiloxane

A: 328312-16-9
3,3,-dichloro-1,1,1,5,5,7,7,7,-octamethyl-3-germa-2,4,6-trioxa-1,5,7-trisilaheptane

B: 548798-13-6
(CH3)3SiOGe(CH3)2(OSi(CH3)2)2OSi(CH3)3

C: 548798-14-7
(CH3)3SiOGe(CH3)2(OSi(CH3)2)3OSi(CH3)3

D: 41923-26-6
1,1,1-trichloro-3,3,5,5,5-pentamethyl-1-germa-4-oxa-3,5-disilapentane

Conditions

Conditions	Yield
react. of dichlorogermylene with trisiloxane;	A 23% B 5% C 1.5% D 3%

...Expand

: 107-51-7
Octamethyltrisiloxane

: 140-88-5
ethyl acrylate

: C12H30O4Si3

Conditions

Conditions	Yield
With tetrabutylammonium decatungstate In acetonitrile for 3h; UV-irradiation; Inert atmosphere;	10%

: 22432-65-1
2-butoxy-[1,3]dioxolane

: 107-51-7
Octamethyltrisiloxane

A: 1825-65-6
butoxytrimethylsilane

B: 107-46-0
Hexamethyldisiloxane

C: 592-84-7
n-butyl formate

D: 134283-99-1
C10H28O3Si3

E: 134283-97-9
C8H20O4Si2

F: 134284-02-9
Formic acid 2-(butoxy-dimethyl-silanyloxy)-ethyl ester

Conditions

Conditions	Yield
sulfuric acid at 16 - 20℃; other 2-alkoxy-1,3-dioxacycloalkane;

...Expand

: 107-51-7
Octamethyltrisiloxane

: 4-Chloro-2-nitro-phenylamine; compound with trifluoro-methanesulfonic acid

A: C8H24O2Si3*CHF3O3S

B: 89-63-4
4-Chloro-2-nitroaniline

Conditions

Conditions	Yield
In benzene at 26.9℃; Equilibrium constant; Thermodynamic data; ΔG, ΔH, ΔS;

...Expand

: 107-51-7
Octamethyltrisiloxane

A: 75-77-4
chloro-trimethyl-silane

B: 2943-62-6
1-chloro-1,1,3,3,3-pentamethyldisiloxane

Conditions

Conditions	Yield
With hydrogenchloride In 1,4-dioxane; benzene at 29.9℃; Rate constant; without added water; in the presence of MeSiCl3;

: 107-51-7
Octamethyltrisiloxane

A: 420-56-4
trimethylsilyl fluoride

B: 56998-70-0
fluoropentamethyldisiloxane

Conditions

Conditions	Yield
With BF3*dioxan In benzene-d6 at 29.9℃; Rate constant;

: 107-51-7
Octamethyltrisiloxane

A: 420-56-4
trimethylsilyl fluoride

B: 56998-70-0
fluoropentamethyldisiloxane

C: C3H9BF2OSi

D: C5H15BF2O2Si2

Conditions

Conditions	Yield
With boron trifluoride In 1,4-dioxane at 30℃; Rate constant;

...Expand

Octamethyltrisiloxane Chemical Properties

IUPAC Name: Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl-
The MF of Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl- (107-51-7) is C₈H₂₄O₂Si₃.

The MW of Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl- (107-51-7) is 236.534.
Synonyms of Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl- (107-51-7): Methylpolysiloxane ; Dimethylbis(trimethylsilyloxy)silane ; Poly(dimethylsiloxane), hydroxy terminated ; Poly(dimethylsiloxane), 200(r) fluid ; Octamethyltrisiloxane ; [(Ch3)3sio]2si(ch3)2 ; 1,1,1,3,3,5,5,5-Octamethyltrisiloxane ; CO9816
Product Categories: Organics;Si (Classes of Silicon Compounds);Siloxanes;Si-O Compounds;Organometallic Reagents;Organosilicon
Form: clear colourless liquid
Index of Refraction: 1.404
EINECS: 203-497-4
Density: 0.843 g/ml
Flash Point: 55 °C
Boiling Point: 153 °C
Melting Point: -86 °C
Storage temp: Flammables area
Merck: 6748

Octamethyltrisiloxane Uses

Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl- (107-51-7) is used as organic synthesis intermediate.

Octamethyltrisiloxane Safety Profile

Safety information of Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl- (107-51-7):
Risk Statements
10 Flammable
Safety Statements
23 Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer)
24/25 Avoid contact with skin and eyes
RIDADR UN 1993 3/PG 3
WGK Germany 3
F 10-21
TSCA Yes
HazardClass 3.2
PackingGroup III

Product Name

POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED

Synthetic route

Octamethyltrisiloxane Chemical Properties

Octamethyltrisiloxane Uses

Octamethyltrisiloxane Safety Profile

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