Decamethylcyclopentasiloxane supplier

Name
Decamethylcyclopentasiloxane
EINECS 208-764-9
CAS No. 541-02-6
Article Data53
CAS DataBase
Density 0.96 g/cm³
Solubility Immiscible with water.
Melting Point -44 °C
Formula C₁₀H₃₀O₅ Si₅
Boiling Point 210 °C at 760 mmHg
Molecular Weight 370.773
Flash Point 95.6 °C
Transport Information
Appearance liquid
Safety 23-24/25
Risk Codes 36/37/38
Molecular Structure
Hazard Symbols Xi
Synonyms Cyclopentasiloxane,decamethyl- (6CI,8CI,9CI);Botanisil CP 33;Cyclic dimethylsiloxane pentamer;Cyclo-decamethylpentasiloxane;Cyclopentadimethylsiloxane;Cyclopentasiloxane;DC 345 Fluid;Dow Corning 345 Fluid;Dow Corning 345EU;Execol D5;KF 995;Pentacyclomethicone;SF1202;SH 245 (siloxane);Silbione 70045V5;Silbione V 5;TFS 405;TSF 465;Union Carbide 7158 Silicone Fluid;VS 7158;Volasil 245;VolatileSilicone Fluid 345;Decamethylcyclopentasiloxane;
PSA 46.15000
LogP 3.59200

Synthetic route

: 433725-45-2
2,2,4,4,6,6-hexamethyl-8,8-divinylcyclotetrasiloxane

A: 556-67-2
octamethylcyclotetrasiloxane

B: 541-02-6
decamethylcyclopentasiloxane

C: tetravinyltetramethylcyclotetrasiloxane

D copoly(dimethylsiloxane/divinylsiloxane), prepared by anionic polymerization of 2,2,4,4,6,6-hexamethyl-8,8-divinylcyclotetrasiloxane; monomer(s): 2,2,4,4,6,6-hexamethyl-8,8-divinylcyclotetrasiloxane: copoly(dimethylsiloxane/divinylsiloxane), prepared by anionic polymerization of 2,2,4,4,6,6-hexamethyl-8,8-divinylcyclotetrasiloxane; monomer(s): 2,2,4,4,6,6-hexamethyl-8,8-divinylcyclotetrasiloxane

Conditions

Conditions	Yield
With P4-t-Bu at 80℃; for 0.333333h; Further byproducts given;	A n/a B n/a C n/a D 80%

...Expand

: 67-68-5
dimethyl sulfoxide

: 75-78-5
dimethylsilicon dichloride

A: 2373-51-5
chloro-methylsulfanyl-methane

B: 541-05-9
Hexamethylcyclotrisiloxane

C: 556-67-2
octamethylcyclotetrasiloxane

D: 541-02-6
decamethylcyclopentasiloxane

E: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
at 0℃; Mechanism; other diorganyldichlorosilanes; reactions in the presence of hexamethyldisiloxane, trimethylchlorosilane, tetramethoxysilane, tetraethoxysilane;	A 79% B 48% C 35% D 12% E 5%

...Expand

: 67-68-5
dimethyl sulfoxide

A: 2373-51-5
chloro-methylsulfanyl-methane

B: 541-05-9
Hexamethylcyclotrisiloxane

C: 556-67-2
octamethylcyclotetrasiloxane

D: 541-02-6
decamethylcyclopentasiloxane

Conditions

Conditions	Yield
With dimethylsilicon dichloride at 0℃; Further byproducts given;	A 79% B 48% C 35% D 5%

...Expand

: 1529-17-5
phenyltrimethylsilyl ether

A: 541-02-6
decamethylcyclopentasiloxane

B: 3440-02-6
dimethyl-diphenoxy-silane

C: 18406-79-6
C13H26O3Si3

D: C11H20O2Si2

Conditions

Conditions	Yield
With gallium(III) iodide at 175 - 180℃; for 3h; Yield given; Further byproducts given. Title compound not separated from byproducts;	A n/a B 79% C n/a D n/a

...Expand

: 15576-81-5
diiododimethylsilane

A: 556-67-2
octamethylcyclotetrasiloxane

B: 541-02-6
decamethylcyclopentasiloxane

Conditions

Conditions	Yield
With 3,3-dimethyl-butan-2-one; zinc In dichloromethane for 0.166667h; Ambient temperature;	A 60% B 18%

: 75-78-5
dimethylsilicon dichloride

A: 541-05-9
Hexamethylcyclotrisiloxane

B: 556-67-2
octamethylcyclotetrasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

Conditions

Conditions	Yield
With pyridine; sodium hydrogencarbonate In ethyl acetate at 20℃; for 3h;	A 60% B 20% C 15%
With water Autoclave;	A 51.3% B 29.2% C 8%
With composite catalyst at 150℃; under 675.068 Torr; for 0.5h; Temperature; Pressure; Reagent/catalyst; Large scale;	A n/a B 43% C n/a

...Expand

: 75-78-5
dimethylsilicon dichloride

A: 541-05-9
Hexamethylcyclotrisiloxane

B: 556-67-2
octamethylcyclotetrasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

D: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With dimethyl sulfoxide at 0℃; Further byproducts given;	A 48% B 35% C 12% D 5%
With tetrahydrofuran; lithium at 40 - 45℃; for 1h; Yield given. Further byproducts given. Yields of byproduct given;
With hydrogenchloride In toluene at 20℃; for 4h; Yield given. Further byproducts given. Yields of byproduct given;

...Expand

: 75-78-5
dimethylsilicon dichloride

A: 107-50-6
tetradecamethylcycloheptasiloxane

B: 541-05-9
Hexamethylcyclotrisiloxane

C: 556-67-2
octamethylcyclotetrasiloxane

D: 541-02-6
decamethylcyclopentasiloxane

E: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With H2O In water slow addn. of 4l (CH3)2SiCl2 to 12l H2O at 15-20°C withorous stirring; further products;; distn.;;	A n/a B 0.5% C 42% D 6.7% E 1.6%
With hydrogenchloride In toluene at 20℃; for 4h; Product distribution; diff. concentration of aq. HCl; diff. reaction time; other difunctional organochlorosilanes;
With H2O In diethyl ether; water addn. of (CH3)2SiCl2 to ether-H2O; further products;; distn.;;

...Expand

: 75-78-5
dimethylsilicon dichloride

A: 556-67-2
octamethylcyclotetrasiloxane

B: 541-02-6
decamethylcyclopentasiloxane

Conditions

Conditions	Yield
With water at 15 - 20℃; Autoclave;	A 42% B 6.7%

: 512-56-1
trimethyl phosphite

: 75-78-5
dimethylsilicon dichloride

A: 74-87-3
methylene chloride

B: 541-02-6
decamethylcyclopentasiloxane

C: 540-97-6
dodecamethyl-cyclohexasiloxane

D: 1450711-54-2
C7H21O6PSi3

E: 1450711-55-3
C9H27O7PSi4

Conditions

Conditions	Yield
at 20℃; for 10h; Inert atmosphere;	A n/a B 15% C 10% D 38% E 33%

...Expand

: 3277-26-7
1,1,3,3-Tetramethyldisiloxane

A: 107-50-6
tetradecamethylcycloheptasiloxane

B: 556-67-2
octamethylcyclotetrasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

D: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With iodine In dichloromethane for 0.333333h; Heating; Further byproducts given;	A 14% B 26% C 21% D 15%

...Expand

: 78-62-6
diethoxy dimethylsilane

: 541-02-6
decamethylcyclopentasiloxane

Conditions

Conditions	Yield
With hydrogenchloride

: 75-78-5
dimethylsilicon dichloride

: 541-02-6
decamethylcyclopentasiloxane

Conditions

Conditions	Yield
With water at 15 - 20℃;
With water Erhitzen der gebildeten nicht destillierbaren Produkte mit NaOH auf 230-240grad unter 1 mm;

: 541-05-9
Hexamethylcyclotrisiloxane

A: 107-50-6
tetradecamethylcycloheptasiloxane

B: 556-67-2
octamethylcyclotetrasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

D: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With hydrogenchloride for 72h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

...Expand

: 7445-36-5
1,1,3,3,5,5,7,7,9,9-decamethylpentasiloxane-1,9-diol

A: 541-02-6
decamethylcyclopentasiloxane

B: permethyldecasiloxane-1,19-diol

Conditions

Conditions	Yield
With trifluorormethanesulfonic acid In 1,4-dioxane at 35℃; Product distribution; Kinetics; var. of reagent, solvent;

: 62806-42-2
chloro(2-chloroethoxy)dimethylsilane

A: 541-05-9
Hexamethylcyclotrisiloxane

B: 556-67-2
octamethylcyclotetrasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

Conditions

Conditions	Yield
With potassium Sodium at 280 - 300℃; under 0.1 - 1 Torr; Yield given. Yields of byproduct given;
With potassium Sodium In gaseous matrix at 280 - 320℃; under 0.1 - 1 Torr; Product distribution;

...Expand

: 2,2,4,4,6,6,8,8,10,10-Decamethyl-[1,3,5,7,9,2,4,6,8,10]pentoxapentasilecane; compound with trifluoro-methanesulfonic acid

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

A: 541-02-6
decamethylcyclopentasiloxane

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

Conditions

Conditions	Yield
In benzene at 26.9℃; Equilibrium constant;

...Expand

: 75-78-5
dimethylsilicon dichloride

A: 107-50-6
tetradecamethylcycloheptasiloxane

B: 541-05-9
Hexamethylcyclotrisiloxane

C: 556-67-2
octamethylcyclotetrasiloxane

D: 541-02-6
decamethylcyclopentasiloxane

Conditions

Conditions	Yield
With hydrogenchloride In toluene at 20℃; for 4h; Yield given. Further byproducts given. Yields of byproduct given;

...Expand

: 75-78-5
dimethylsilicon dichloride

A: 107-50-6
tetradecamethylcycloheptasiloxane

B: 541-05-9
Hexamethylcyclotrisiloxane

C: 541-02-6
decamethylcyclopentasiloxane

D: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With hydrogenchloride In toluene at 20℃; for 4h; Yield given. Further byproducts given. Yields of byproduct given;

...Expand

: 75-78-5
dimethylsilicon dichloride

A: 541-05-9
Hexamethylcyclotrisiloxane

B: 556-67-2
octamethylcyclotetrasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

D: 13452-94-3
Tetradecamethylcycloheptasilan

E: 13452-92-1
decamethylcyclopentasilane

F: 4098-30-0
dodecamethylcyclohexasilane

Conditions

Conditions	Yield
With tetrahydrofuran; lithium at 40 - 45℃; Product distribution; Mechanism; various temperature, various reactant ratios;

...Expand

: 3,3,6,6,9,9,12,12-Octamethyl-1,2,4,5,7,8,10,11-octaoxa-3,6,9,12-tetrasila-cyclododecane

A: 541-05-9
Hexamethylcyclotrisiloxane

B: 556-67-2
octamethylcyclotetrasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

Conditions

Conditions	Yield
at 50℃; Product distribution;

...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

: 556-67-2
octamethylcyclotetrasiloxane

A: 107-46-0
Hexamethyldisiloxane

B: 541-02-6
decamethylcyclopentasiloxane

C: 107-52-8
tetradecamethylhexasiloxane

D: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With aluminium(III) iodide at 140 - 170℃; for 5h; Yield given; Title compound not separated from byproducts;	A 0.12 g B n/a C n/a D n/a

...Expand

: 18139-89-4
1,3,5,7,9-pentachloro-1,3,5,7,9-pentamethylcyclopentasiloxane

: 917-54-4
methyllithium

A: 556-67-2
octamethylcyclotetrasiloxane

B: 541-02-6
decamethylcyclopentasiloxane

C: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
In diethyl ether at 0℃; Product distribution; other organometallic reagent and reaction conditions;

...Expand

: 75-78-5
dimethylsilicon dichloride

A: 2401-73-2
1,1,3,3-tetramethyl-1,3-dichlorodisiloxane

B: 556-67-2
octamethylcyclotetrasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

D: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With sodium nitrate at 0℃; 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: 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

: 75-78-5
dimethylsilicon dichloride

A: 3582-71-6
1,5-dichlorohexamethyltrisiloxane

B: 556-67-2
octamethylcyclotetrasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

D: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With sodium nitrate at 0℃; for 2h; Yield given; Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

...Expand

: 75-78-5
dimethylsilicon dichloride

A: 2474-02-4
1,7-dichlorooctamethyltetrasiloxane

B: 556-67-2
octamethylcyclotetrasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

D: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With sodium nitrate at 0℃; for 2h; Yield given; Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

...Expand

: 75-78-5
dimethylsilicon dichloride

A: 556-67-2
octamethylcyclotetrasiloxane

B: 14741-59-4
1,9-dichlorodecamethylpentasiloxane

C: 541-02-6
decamethylcyclopentasiloxane

D: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With sodium nitrate at 0℃; for 2h; Yield given; Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

...Expand

: Li[Al(perfluoro-tertbutoxide)4]

: 541-02-6
decamethylcyclopentasiloxane

: 896439-19-3
Li(dimethylsiloxane)5[Al(OC(CF3)3)4]

Conditions

Conditions	Yield
In dichloromethane in Schlenk flask; mixed soln. concd. to saturation by stirring overnightat room temp.; stand for 1 d at -20°C; solvent removed under vac.; washed 3 times with n-hexane; elem. anal.;	90%

: 541-02-6
decamethylcyclopentasiloxane

: 1191-15-7
diisobutylaluminium hydride

: 254763-51-4
(H(CH3)2Si(OAl(CH2CH(CH3)2)2)2Si(CH3)2)2O

Conditions

Conditions	Yield
In n-heptane stirring (3 d); evapn.; elem. anal.;	84%

: 541-02-6
decamethylcyclopentasiloxane

: 865-37-2
dimethylaluminum hydride

: 254763-44-5
(CH3)2Si((OAl(CH3)2)2Si(CH3)2H)2

Conditions

Conditions	Yield
In hexane stirring (4 d); evapn. (vac.); elem. anal.;	68%

: 109-99-9
tetrahydrofuran

: 541-02-6
decamethylcyclopentasiloxane

: 70776-29-3
di(tert-butyl)aluminium hydride

: 254763-53-6
HSi(CH3)2(OAl(C(CH3)3)2)2(Si(CH3)2O)2Al(C4H8O)(C(CH3)3)2

Conditions

Conditions	Yield
In hexane stirring (3 d); filtering, recrystn. (hexane, -23°C); elem. anal.;	66%

...Expand

: 3277-26-7
1,1,3,3-Tetramethyldisiloxane

: 541-02-6
decamethylcyclopentasiloxane

: 19095-23-9
1,1,3,3,5,5,7,7,9,9,11,11,13,13-tetradecamethylheptasiloxane

Conditions

Conditions	Yield
With potassium hydroxide In water; toluene at 50℃; for 2h;	61%

: 18001-60-0
1,1,3,3-tetraethoxy-1,3-dimethyldisiloxane

: 541-02-6
decamethylcyclopentasiloxane

: 1,3,3,5-tetramethyl-1,1,5,5-tetraethoxytrisiloxane

Conditions

Conditions	Yield
With cesium hydroxide at 100 - 130℃;	58%

: 3277-26-7
1,1,3,3-Tetramethyldisiloxane

: 541-02-6
decamethylcyclopentasiloxane

A: 2441-21-6
iododimethylsilane

B: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With iodine	A n/a B 50%

...Expand

: 1066-35-9
dimethylmonochlorosilane

: 541-02-6
decamethylcyclopentasiloxane

: 19095-23-9
1,1,3,3,5,5,7,7,9,9,11,11,13,13-tetradecamethylheptasiloxane

Conditions

Conditions	Yield
With water; sulfur dioxide In hexane Ambient temperature;	45%

: 541-02-6
decamethylcyclopentasiloxane

: 70776-29-3
di(tert-butyl)aluminium hydride

: 254763-49-0
(H(CH3)2Si(OAl(C(CH3)3)2)2Si(CH3)2)2O

Conditions

Conditions	Yield
In hexane stirring (4 d); filtering, evapn. (vac.), recrystn. (pentane, -78°C);;	44%

: silver hexafluoroantimonate

: 541-02-6
decamethylcyclopentasiloxane

A: Ag(1+)*[((CH3)2SiO)6]=[((CH3)2SiO)6Ag](1+)

B: 945917-62-4
[((CH3)2SiO)7Ag](1+)*SbF6(1-)=[((CH3)2SiO)7Ag][SbF6]

Conditions

Conditions	Yield
In sulfur dioxide Ag. compd treated with ligand (3.6:2.58 molar ratio), cooled to 77 K, SO2 added, warmed to room temp., pptd.; filtered off, MAS, NMR;	A n/a B 23%

...Expand

: 541-02-6
decamethylcyclopentasiloxane

: 17465-86-0
cyclomaltooctaose

: C10H30O5Si5*4C48H80O40

Conditions

Conditions	Yield
In water at 20℃; Sonication;	11%

: 541-02-6
decamethylcyclopentasiloxane

: 63683-92-1
2,7-dimethyl-2,3:7,8-diepoxy-5-silaspiro<4.4>nonane

: 17995-45-8
2,2,4,4,8,8,10,10,12,12-decamethyl-2,4,6,8,10,12-hexasila-1,3,5,7,9,11,13-heptaoxaspiro<5.7>tridecane

Conditions

Conditions	Yield
at 520℃; under 0.0001 Torr; for 3.25h;	9%

: 541-02-6
decamethylcyclopentasiloxane

A: 556-67-2
octamethylcyclotetrasiloxane

B: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With dodecylbenzene-sulphonic acid; acetic acid at 120℃; for 4 - 24h; Product distribution / selectivity;	A 1.08% B 2.05%
With toluene-4-sulfonic acid at 120℃; for 4 - 24h; Product distribution / selectivity;	A 0.56% B 0.59%
With molecular sieve; dodecylbenzene-sulphonic acid at 20 - 120℃; for 0.014 - 24h; Product distribution / selectivity;	A 0% B 0%
With molecular sieve at 20 - 120℃; for 0.017 - 24h; Product distribution / selectivity;	A 0.67% B 0.92%
With acetic acid at 120℃; for 4 - 24h; Product distribution / selectivity;	A 0.1% B 0.48%

: 541-02-6
decamethylcyclopentasiloxane

: 540-97-6
dodecamethyl-cyclohexasiloxane

Conditions

Conditions	Yield
With toluene-4-sulfonic acid at 20 - 120℃; for 0.017 - 24h; Product distribution / selectivity;	0.68%
With dodecylbenzene-sulphonic acid at 20 - 120℃; for 0.017 - 24h; Product distribution / selectivity;	0.74%
With dodecylbenzene-sulphonic acid at 20 - 120℃; for 0.017 - 24h; Product distribution / selectivity;	0.7%

: 541-02-6
decamethylcyclopentasiloxane

: 556-67-2
octamethylcyclotetrasiloxane

Conditions

Conditions	Yield
With hydrogenchloride at 120℃; for 4 - 24h; Product distribution / selectivity;	0.1%

: 541-02-6
decamethylcyclopentasiloxane

: 353-66-2
dimethyldifluorosilane

Conditions

Conditions	Yield
With hydrogen fluoride; copper(II) sulfate

: 1066-35-9
dimethylmonochlorosilane

: 541-02-6
decamethylcyclopentasiloxane

: 132118-77-5
1-chloro-1,1,3,3,5,5,7,7,9,9,11,11-dodecamethylhexasiloxane

Conditions

Conditions	Yield
With water; pyrographite for 5h; Ambient temperature; Yield given;

Decamethylcyclopentasiloxane Consensus Reports

Decamethylcyclopentasiloxane(541-02-6) is reported in EPA TSCA Inventory.

Decamethylcyclopentasiloxane Specification

The Decamethylcyclopentasiloxane, with the cas register number 541-02-6, has its systematic name of 2,2,4,4,6,6,8,8,10,10-decamethyl-1,3,5,7,9,2,4,6,8,10-pentoxapentasilecane. This is a kind of liquid, and incompatible with strong oxidizing agents. And its product categories are various, including siloxanes;organics;si (classes of silicon compounds);si-o compounds;organometallic reagents;organosilicon. As to its usage, it is widely applied in the cosmetic and personal nursing care products.

The characteristics of Decamethylcyclopentasiloxane are as follows: (1)#H bond acceptors: 5; (2)Polar Surface Area: 46.15; (3)Index of Refraction: 1.427; (4)Molar Refractivity: 98.78 cm³; (5)Molar Volume: 384.3 cm³; (6)Polarizability: 39.16 ×10^-24cm³; (7)Surface Tension: 19 dyne/cm; (8)Density: 0.96 g/cm³; (9)Flash Point: 95.6 °C; (10)Enthalpy of Vaporization: 42.81 kJ/mol; (11)Boiling Point: 210 °C at 760 mmHg; (12)Vapour Pressure: 0.285 mmHg at 25°C; (13)Exact Mass: 370.093957; (14)MonoIsotopic Mass: 370.093957; (15)Topological Polar Surface Area: 46.2; (16)Heavy Atom Count: 20; (17)Complexity: 258.

Use of Decamethylcyclopentasiloxane: Decamethylcyclopentasiloxane reacts with chloro-dimethyl-silane to produce 1,13-Dihydrotetradecamethylheptasiloxan, with the following condition: reagent: H2O; catalytic agent: SO2; solution: hexane; yield: 45%; other condition: ambient temperature.

Production method of Decamethylcyclopentasiloxane: Diiodo-dimethyl-silane reacts with octamethyl-cyclotetrasiloxane to produce Decamethylcyclopentasiloxane, with the following condition: reagent: pinacolone, Zn; solution: CH2Cl2; reaction time: 10 min; yield: 60%; other condition: ambient temperature.

While dealing with Decamethylcyclopentasiloxane, you should be very cautious. For being a kind of harmful chemical, it may cause damage to health, and it has limited evidence of a carcinogenic effect. Therefore, you had better wear suitable protective clothing while using this chemical and remember not to breathe dust.

In addition, you could obtain the molecular structure by converting the following datas:
(1)SMILES:O1[Si](O[Si](O[Si](O[Si](O[Si]1(C)C)(C)C)(C)C)(C)C)(C)C;
(2)Std. InChI:InChI=1S/C10H30O5Si5/c1-16(2)11-17(3,4)13-19(7,8)15-20(9,10)14-18(5,6)12-16/h1-10H3 CopyCopied ;
(3)Std. InChIKey:XMSXQFUHVRWGNA-UHFFFAOYSA-N.

Below are the toxicity information of Decamethylcyclopentasiloxane:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Source
rabbit	LD50	skin	> 16mL/kg (16mL/kg)	Toxicology and Applied Pharmacology. Vol. 28, Pg. 313, 1974.
rat	LC	inhalation	> 2700mg/m3/4H (2700mg/m3)	National Technical Information Service. Vol. OTS0572802,
rat	LD50	oral	> 24134mg/kg (24134mg/kg)	National Technical Information Service. Vol. OTS0572801,

Product Name

Decamethylcyclopentasiloxane

Synthetic route

Decamethylcyclopentasiloxane Consensus Reports

Decamethylcyclopentasiloxane Specification

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