Product Name

  • Name

    1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane

  • EINECS
  • CAS No. 5931-17-9
  • Article Data9
  • CAS DataBase
  • Density 0.93 g/cm3
  • Solubility
  • Melting Point 139 °C
  • Formula C12H30O3Si2
  • Boiling Point 306.2 °C at 760 mmHg
  • Molecular Weight 278.539
  • Flash Point 110°C
  • Transport Information
  • Appearance Clear to straw liquid with mild odor
  • Safety 26-36/37/39-36
  • Risk Codes 36/37/38
  • Molecular Structure Molecular Structure of 5931-17-9 (1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane)
  • Hazard Symbols IrritantXi
  • Synonyms 6-Oxa-5,7-disilaundecane-1,11-diol,5,5,7,7-tetramethyl- (6CI,7CI,8CI);1,3-Bis(4-hydroxybutyl)-1,1,3,3-tetramethyldisiloxane;1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane;
  • PSA 49.69000
  • LogP 2.95820

Synthetic route

4-(dimethylsiloxy)-1-butene
23483-24-1

4-(dimethylsiloxy)-1-butene

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

Conditions
ConditionsYield
Stage #1: 4-(dimethylsiloxy)-1-butene With platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex; triethylamine In isopropyl alcohol at 90℃; for 10h;
Stage #2: With hydrogenchloride; water at 90℃; for 10h;		86.37%
With sodium hydroxide
1,3-bis(4-trimethylsiloxybutyl)tetramethyldisiloxane
113425-96-0

1,3-bis(4-trimethylsiloxybutyl)tetramethyldisiloxane

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

Conditions
ConditionsYield
With methanol for 3h; Ambient temperature;84%
4-acetoxy-n-butyldimethylchlorosilane
70761-34-1

4-acetoxy-n-butyldimethylchlorosilane

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

Conditions
ConditionsYield
With acetic acid In water; toluene pH=2;83.7%
2,2-Dimethyl-1-oxa-2-silacyclohexan
5833-47-6

2,2-Dimethyl-1-oxa-2-silacyclohexan

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

Conditions
ConditionsYield
With potassium hydroxide; acetylene In water at 110℃; under 11250.9 Torr; for 3h;50%
With hydrogenchloride; acetone
1,3-bis(4-trimethylsiloxybutyl)tetramethyldisiloxane
113425-96-0

1,3-bis(4-trimethylsiloxybutyl)tetramethyldisiloxane

A

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

B

δ-hydroxybutylpentamethyldisiloxane
74970-78-8

δ-hydroxybutylpentamethyldisiloxane

Conditions
ConditionsYield
With hydrogenchloride In diethyl ether at 25℃; for 15h;A 47%
B 29%
2,2-Dimethyl-1-oxa-2-silacyclohexan
5833-47-6

2,2-Dimethyl-1-oxa-2-silacyclohexan

Hexamethyldisiloxane
107-46-0

Hexamethyldisiloxane

A

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

B

δ-hydroxybutylpentamethyldisiloxane
74970-78-8

δ-hydroxybutylpentamethyldisiloxane

Conditions
ConditionsYield
With potassium hydroxide; acetylene In water at 120℃; under 12000.9 Torr; for 4h;A 3.5 g
B 37%
...Expand
tetrahydrofuran
109-99-9

tetrahydrofuran

dimethylsilicon dichloride
75-78-5

dimethylsilicon dichloride

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

Conditions
ConditionsYield
(i) MgBr2, Mg, (ii) aq. HCl; Multistep reaction;
2,2-Dimethyl-1-oxa-2-silacyclohexan
5833-47-6

2,2-Dimethyl-1-oxa-2-silacyclohexan

Trimethylsilanol
1066-40-6

Trimethylsilanol

A

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

B

δ-hydroxybutylpentamethyldisiloxane
74970-78-8

δ-hydroxybutylpentamethyldisiloxane

Conditions
ConditionsYield
With hydrogenchloride at 90℃; for 2h;A 1.1 g
B n/a
With hydrogenchloride at 90℃; for 2h;A n/a
B 3.5 g
...Expand
chloro(4-chlorobutoxy)dimethylsilane
1002-04-6

chloro(4-chlorobutoxy)dimethylsilane

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium
2: aqueous HCl; acetone
View Scheme
1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

dimethoxy(methyl)phenylsilane
3027-21-2

dimethoxy(methyl)phenylsilane

A

methanol
67-56-1

methanol

B

hydroxybutyl-terminated polymethylsiloxane with fifty percent phenyl content

hydroxybutyl-terminated polymethylsiloxane with fifty percent phenyl content

Conditions
ConditionsYield
With hydrogenchloride In water for 4.5h; Heating / reflux;A n/a
B 100%
...Expand
4‐oxo‐4‐(prop‐2‐ynyloxy)butanoic acid

4‐oxo‐4‐(prop‐2‐ynyloxy)butanoic acid

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

C26H42O9Si2
1362107-86-5

C26H42O9Si2

Conditions
ConditionsYield
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at -20 - 20℃; Inert atmosphere;76%
1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

C12H28I2OSi2
1378236-10-2

C12H28I2OSi2

Conditions
ConditionsYield
With 1H-imidazole; iodine; triphenylphosphine In diethyl ether; acetonitrile at 0 - 20℃; for 1h;70%
1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

p-toluenesulfonyl chloride
98-59-9

p-toluenesulfonyl chloride

C26H42O7S2Si2
933994-18-4

C26H42O7S2Si2

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane at 0℃; for 2h;70%
1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

4-Carboxybenzaldehyde
619-66-9

4-Carboxybenzaldehyde

C28H38O7Si2

C28H38O7Si2

Conditions
ConditionsYield
With dmap; dicyclohexyl-carbodiimide In dichloromethane at 0 - 20℃;67%
1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

2,2-Dimethyl-1-oxa-2-silacyclohexan
5833-47-6

2,2-Dimethyl-1-oxa-2-silacyclohexan

Hexamethyldisiloxane
107-46-0

Hexamethyldisiloxane

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

δ-hydroxybutylpentamethyldisiloxane
74970-78-8

δ-hydroxybutylpentamethyldisiloxane

Conditions
ConditionsYield
With acetylene at 150℃; for 5h;10 g
1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

octamethylcyclotetrasiloxane
556-67-2

octamethylcyclotetrasiloxane

poly(dimethylsiloxane) containing terminal 4-hydroxybutyl groups

poly(dimethylsiloxane) containing terminal 4-hydroxybutyl groups

Conditions
ConditionsYield
With sulfonic acid
1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

divinyl carbonate
7570-02-7

divinyl carbonate

1,3-bis-[(4-vinyloxycarbonyloxy)but-1-yl]tetramethyldisiloxane

1,3-bis-[(4-vinyloxycarbonyloxy)but-1-yl]tetramethyldisiloxane

Conditions
ConditionsYield
In xylene for 12h; Heating / reflux;
dimethyldimethoxysilan
1112-39-6

dimethyldimethoxysilan

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

dimethoxy(diphenyl)silane
6843-66-9

dimethoxy(diphenyl)silane

A

methanol
67-56-1

methanol

B

poly(dimethylsiloxane-co-diphenylsiloxane)

poly(dimethylsiloxane-co-diphenylsiloxane)

Conditions
ConditionsYield
With hydrogenchloride; water for 2h; Heating / reflux;
...Expand
dimethyldimethoxysilan
1112-39-6

dimethyldimethoxysilan

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

dimethoxy(diphenyl)silane
6843-66-9

dimethoxy(diphenyl)silane

A

methanol
67-56-1

methanol

B

hydroxybutyl-terminated copolymer of dimethylsiloxane and diphenylsiloxane

hydroxybutyl-terminated copolymer of dimethylsiloxane and diphenylsiloxane

Conditions
ConditionsYield
With hydrogenchloride In water for 2h; Heating / reflux;
...Expand
dimethyldimethoxysilan
1112-39-6

dimethyldimethoxysilan

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

dimethoxy(diphenyl)silane
6843-66-9

dimethoxy(diphenyl)silane

hydroxybutyl-terminated copolymer of dimethylsiloxane and diphenylsiloxane with a 27:9 ratio of methyl/phenyl and a molecular weight of 4000

hydroxybutyl-terminated copolymer of dimethylsiloxane and diphenylsiloxane with a 27:9 ratio of methyl/phenyl and a molecular weight of 4000

Conditions
ConditionsYield
Stage #1: dimethyldimethoxysilan; 1,3-bis(4-hydroxybutyl)tetramethyldisiloxane; dimethoxy(diphenyl)silane With hydrogenchloride In water for 1h; Heating / reflux;
Stage #2: In water for 1h; Heating / reflux;
...Expand
dimethyldimethoxysilan
1112-39-6

dimethyldimethoxysilan

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

dimethoxy(methyl)phenylsilane
3027-21-2

dimethoxy(methyl)phenylsilane

hydroxybutyl-terminated copolymer of dimethylsiloxane and phenylmethylsiloxane with a 1:3 ratio of total methyl to phenyl attached to silicon and molecular weight of 4000

hydroxybutyl-terminated copolymer of dimethylsiloxane and phenylmethylsiloxane with a 1:3 ratio of total methyl to phenyl attached to silicon and molecular weight of 4000

Conditions
ConditionsYield
Stage #1: dimethyldimethoxysilan; 1,3-bis(4-hydroxybutyl)tetramethyldisiloxane; dimethoxy(methyl)phenylsilane With hydrogenchloride In water for 1h; Heating / reflux;
Stage #2: In water for 1h; Heating / reflux;
...Expand
1,3-bis(4-hydroxybutyl)tetramethyldisiloxane
5931-17-9

1,3-bis(4-hydroxybutyl)tetramethyldisiloxane

Propiolic acid
471-25-0

Propiolic acid

C18H30O5Si2
1197984-91-0

C18H30O5Si2

Conditions
ConditionsYield
With dmap; dicyclohexyl-carbodiimide In dichloromethane at -20℃;

1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane Specification

The 1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane with its cas register number is 5931-17-9. It also can be called as 1,3-Bis(4-hydroxybutyl)-1,1,3,3-tetramethyldisiloxane and the Systematic name about this chemical is 4,4'-(1,1,3,3-tetramethyldisiloxane-1,3-diyl)dibutan-1-ol. It belongs to the following product categories, such as Si (Classes of Silicon Compounds), Siloxanes, Si-O Compounds and so on.

Physical properties about 1,3-Bis(4-hydroxybutyl)tetramethyldisiloxane are: (1)ACD/LogP: 3.99; (2)ACD/LogD (pH 5.5): 3.99; (3)ACD/LogD (pH 7.4): 3.99; (4)ACD/BCF (pH 5.5): 630.35; (5)ACD/BCF (pH 7.4): 630.35; (6)ACD/KOC (pH 5.5): 3511.92; (7)ACD/KOC (pH 7.4): 3511.92; (8)#H bond acceptors: 3; (9)#H bond donors: 2; (10)#Freely Rotating Bonds: 12; (11)Polar Surface Area: 27.69Å2; (12)Index of Refraction: 1.446; (13)Molar Refractivity: 79.89 cm3; (14)Molar Volume: 299.4 cm3; (15)Polarizability: 31.67x10-24cm3; (16)Surface Tension: 26.7 dyne/cm; (17)Enthalpy of Vaporization: 63.4 kJ/mol; (18)Boiling Point: 306.2 °C at 760 mmHg; (19)Vapour Pressure: 7.31E-05 mmHg at 25°C.

When you are using this chemical, please be cautious about it as the following:
This chemical is irritating to eyes, respiratory system and skin. When you are using it, wear suitable protective clothing, gloves and eye/face protection. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: O([Si](C)(CCCCO)C)[Si](CCCCO)(C)C
(2)InChI: InChI=1/C12H30O3Si2/c1-16(2,11-7-5-9-13)15-17(3,4)12-8-6-10-14/h13-14H,5-12H2,1-4H3
(3)InChIKey: OWJKJLOCIDNNGJ-UHFFFAOYAU
(4)Std. InChI: InChI=1S/C12H30O3Si2/c1-16(2,11-7-5-9-13)15-17(3,4)12-8-6-10-14/h13-14H,5-12H2,1-4H3
(5)Std. InChIKey: OWJKJLOCIDNNGJ-UHFFFAOYSA-N

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