Product Name

  • Name

    Trimethoxypropylsilane

  • EINECS 213-926-7
  • CAS No. 1067-25-0
  • Article Data11
  • CAS DataBase
  • Density 0.9 g/cm3
  • Solubility Reacts with water.
  • Melting Point
  • Formula C6H16O3Si
  • Boiling Point 142 ºC at 760 mmHg
  • Molecular Weight 164.277
  • Flash Point 40.6 ºC
  • Transport Information UN 1993 3/PG 3
  • Appearance colorless or yellowish clear liquid
  • Safety 26-36
  • Risk Codes 10-36/37/38
  • Molecular Structure Molecular Structure of 1067-25-0 (Trimethoxypropylsilane)
  • Hazard Symbols IrritantXi
  • Synonyms AY 43-203M;Dynasylan BSM;Dynasylan PTMO;JH-N 313;KBM 3033;N 313;P 810;Propyltrimethoxysilane;Silan 103;Z 6265;n-Propyltrimethoxysilane;
  • PSA 27.69000
  • LogP 1.27450

Synthetic route

2-methylene-1,3-diglycidoxypropane
3775-28-8

2-methylene-1,3-diglycidoxypropane

trimethoxysilane
2487-90-3

trimethoxysilane

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

Conditions
ConditionsYield
chloroplatinic acid In isopropyl alcohol85%
trimethoxysilane
2487-90-3

trimethoxysilane

3-chloroprop-1-ene
107-05-1

3-chloroprop-1-ene

A

bis(trimethoxysilyl)propane

bis(trimethoxysilyl)propane

B

3-chloropropyltrichlorosilane
253586-30-0

3-chloropropyltrichlorosilane

C

chlorotrimethoxysilane
4668-00-2

chlorotrimethoxysilane

D

tetramethylorthosilicate
681-84-5

tetramethylorthosilicate

E

1-Chloropropane
540-54-5

1-Chloropropane

F

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

G

3-Chloropropyltrimethoxysilan
2530-87-2

3-Chloropropyltrimethoxysilan

Conditions
ConditionsYield
With toluene; ruthenium trichloride In methanol at 20 - 83℃; for 2h; Product distribution / selectivity;
[ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2 In dichloromethane at 20 - 83℃; for 2h; Product distribution / selectivity;
ruthenium trichloride In methanol at 75 - 169℃; for 18h; Product distribution / selectivity; Continuous operation;
trimethoxysilane
2487-90-3

trimethoxysilane

3-chloroprop-1-ene
107-05-1

3-chloroprop-1-ene

A

3-chloropropyltrichlorosilane
253586-30-0

3-chloropropyltrichlorosilane

B

chlorotrimethoxysilane
4668-00-2

chlorotrimethoxysilane

C

tetramethylorthosilicate
681-84-5

tetramethylorthosilicate

D

1-Chloropropane
540-54-5

1-Chloropropane

E

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

F

3-Chloropropyltrimethoxysilan
2530-87-2

3-Chloropropyltrimethoxysilan

Conditions
ConditionsYield
With toluene; ruthenium trichloride In methanol at 20 - 83℃; for 2h; Product distribution / selectivity;
Stage #1: trimethoxysilane; ruthenium trichloride In methanol; toluene at 20 - 80℃; Heating / reflux;
Stage #2: 3-chloroprop-1-ene at 78 - 83℃; for 2h;
1,1,1,3,3-pentamethyl-1,3-disiloxane
1438-82-0

1,1,1,3,3-pentamethyl-1,3-disiloxane

C13H22OSi

C13H22OSi

A

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

B

C11H30O5Si3
1254985-33-5

C11H30O5Si3

C

C12H22O2Si2

C12H22O2Si2

Conditions
ConditionsYield
With tris(pentafluorophenyl)borate In hexane; toluene at 20℃;
1,1,1,3,3-pentamethyl-1,3-disiloxane
1438-82-0

1,1,1,3,3-pentamethyl-1,3-disiloxane

C9H24O4Si2

C9H24O4Si2

A

1,1,1,5,5,5-hexamethyl-3-propyl-3-[(trimethylsilyl)oxy]trisiloxane

1,1,1,5,5,5-hexamethyl-3-propyl-3-[(trimethylsilyl)oxy]trisiloxane

B

Octamethyltrisiloxane
107-51-7

Octamethyltrisiloxane

C

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

D

C11H30O5Si3
1254985-33-5

C11H30O5Si3

Conditions
ConditionsYield
With tris(pentafluorophenyl)borate In hexane; toluene at 20℃; for 0.0833333h;
methanol
67-56-1

methanol

n-propyltrichlorosilane
141-57-1

n-propyltrichlorosilane

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

Conditions
ConditionsYield
at 20℃; pH=5.6; pH-value;
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

potassium propyl silicate

potassium propyl silicate

Conditions
ConditionsYield
With hydrogenchloride; methanol; potassium chloride In water at 32 - 35℃; for 3.03h;95.1%
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

1-oxo-1-methyl-4-ethyl-4-hydroxymethyl-2,6-dioxa-1-phosphacyclohexane
1365801-87-1

1-oxo-1-methyl-4-ethyl-4-hydroxymethyl-2,6-dioxa-1-phosphacyclohexane

C12H27O6PSi

C12H27O6PSi

Conditions
ConditionsYield
In 1,4-dioxane at 90℃; for 11h; Solvent; Temperature; Inert atmosphere;94.7%
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

2,3-naphthalenediol
92-44-4

2,3-naphthalenediol

Potassium; 3-(2-propyl-1,3-dioxa-2-sila-cyclopenta[b]naphthalen-2-yloxy)-naphthalen-2-olate

Potassium; 3-(2-propyl-1,3-dioxa-2-sila-cyclopenta[b]naphthalen-2-yloxy)-naphthalen-2-olate

Conditions
ConditionsYield
With potassium ethoxide In ethanol Heating;94%
Hexamethyldisiloxane
107-46-0

Hexamethyldisiloxane

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

A

1,1,1,5,5,5-hexamethyl-3-propyl-3-[(trimethylsilyl)oxy]trisiloxane

1,1,1,5,5,5-hexamethyl-3-propyl-3-[(trimethylsilyl)oxy]trisiloxane

B

n-PrSi(OMe)(OSiMe3)2

n-PrSi(OMe)(OSiMe3)2

C

n-PrSi(OH)(OSiMe3)2

n-PrSi(OH)(OSiMe3)2

Conditions
ConditionsYield
Stage #1: Hexamethyldisiloxane With methanol; sulfuric acid at 5 - 10℃; for 1h;
Stage #2: n-propyltrimethoxysilane at 5 - 10℃; for 1.75h;
Stage #3: With sulfuric acid; water more than 3 stages;
A 93.8%
B n/a
C n/a
18-crown-6 ether
17455-13-9

18-crown-6 ether

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

benzene-1,2-diol
120-80-9

benzene-1,2-diol

C15H15O4Si(1-)*C12H24KO6(1+)

C15H15O4Si(1-)*C12H24KO6(1+)

Conditions
ConditionsYield
With potassium methanolate In methanol at 20℃; for 3h; Schlenk technique; Inert atmosphere;91%
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

ethriol phosphite
824-11-3

ethriol phosphite

C24H49O12P3Si

C24H49O12P3Si

Conditions
ConditionsYield
With dimethyl sulfate at 140 - 160℃; for 16h; Concentration; Temperature; Reagent/catalyst; Solvent; Inert atmosphere;90.4%
Hexamethyldisiloxane
107-46-0

Hexamethyldisiloxane

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

1,1,1,5,5,5-hexamethyl-3-propyl-3-[(trimethylsilyl)oxy]trisiloxane

1,1,1,5,5,5-hexamethyl-3-propyl-3-[(trimethylsilyl)oxy]trisiloxane

Conditions
ConditionsYield
Stage #1: Hexamethyldisiloxane With sulfonic acid In methanol at 5 - 10℃;
Stage #2: n-propyltrimethoxysilane In methanol at 5 - 10℃; for 1.75h;
Stage #3: With water In methanol at 5 - 25℃; for 5h;
90%
Stage #1: Hexamethyldisiloxane With methanol; sulfuric acid at -10 - 10℃; for 1h;
Stage #2: n-propyltrimethoxysilane at 5 - 10℃; for 1.75h;
Stage #3: With water at 5 - 25℃; for 4h;
88.2%
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

C3H7F4Si(1-)*K(1+)

C3H7F4Si(1-)*K(1+)

Conditions
ConditionsYield
With potassium hydrogen bifluoride In water; acetone at 20℃; for 0.166667h;89%
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

C3H9KO2Si

C3H9KO2Si

Conditions
ConditionsYield
With water; potassium hydroxide In methanol at 40 - 110℃; for 1.5h;78%
1,2,3-trimethoxybenzene
621-23-8

1,2,3-trimethoxybenzene

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

dimethoxy(2,4,6-trimethoxyphenyl)propylsilane

dimethoxy(2,4,6-trimethoxyphenyl)propylsilane

Conditions
ConditionsYield
Stage #1: 1,2,3-trimethoxybenzene With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In hexane; pentane at 20℃; for 17h;
Stage #2: n-propyltrimethoxysilane In diethyl ether; hexane; pentane at 20℃; for 17h;
72%
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

trisodium tri-n-propylcyclotrisiloxanolate

trisodium tri-n-propylcyclotrisiloxanolate

Conditions
ConditionsYield
With sodium hydroxide In ethanol; water for 0.5h; Reflux;71%
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

4-methoxyphenyl magnesium bromide
13139-86-1

4-methoxyphenyl magnesium bromide

dimethoxy(4-methoxyphenyl)propylsilane

dimethoxy(4-methoxyphenyl)propylsilane

Conditions
ConditionsYield
In tetrahydrofuran; diethyl ether at 20℃; for 19h;67%
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

C3H7F4Si(1-)*H3N*H(1+)

C3H7F4Si(1-)*H3N*H(1+)

Conditions
ConditionsYield
With ammonium hydrogen difluoride In water; acetone at 20℃; Solvent;67%
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

1,3-Dimethoxybenzene
151-10-0

1,3-Dimethoxybenzene

dimethoxy(2,6-dimethoxyphenyl)propylsilane

dimethoxy(2,6-dimethoxyphenyl)propylsilane

Conditions
ConditionsYield
Stage #1: 1,3-Dimethoxybenzene With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In hexane; pentane at 20℃; for 17h;
Stage #2: n-propyltrimethoxysilane In diethyl ether; hexane; pentane at 20℃; for 17h;
58%
1,3,5,7,9,11,14-heptaisobutyltricyclo[7.3.3.15,11]heptasiloxane-endo-3,7,14-triol
307531-92-6

1,3,5,7,9,11,14-heptaisobutyltricyclo[7.3.3.15,11]heptasiloxane-endo-3,7,14-triol

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

C31H70O12Si8

C31H70O12Si8

Conditions
ConditionsYield
In hexane48%
N,N-bis-(2-hydroxyethyl)glycine
150-25-4

N,N-bis-(2-hydroxyethyl)glycine

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

1-propyl-2,8,9-trioxa-5-aza-1-sila-bicyclo[3.3.3]undecan-3-one
85462-12-0

1-propyl-2,8,9-trioxa-5-aza-1-sila-bicyclo[3.3.3]undecan-3-one

Conditions
ConditionsYield
In N,N-dimethyl-formamide; benzene
3-(trimethoxysilyl)-1-propanethiol
4420-74-0

3-(trimethoxysilyl)-1-propanethiol

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

A

octa-n-propylsilsesquioxane
18971-71-6

octa-n-propylsilsesquioxane

B

Si8O12(CH2CH2CH3)6((CH2)3SH)2
161678-45-1

Si8O12(CH2CH2CH3)6((CH2)3SH)2

C

C24H56O12S2Si8

C24H56O12S2Si8

D

Si8O12(CH2CH2CH3)7(CH2)3SH
161678-44-0

Si8O12(CH2CH2CH3)7(CH2)3SH

Conditions
ConditionsYield
With hydrogenchloride In methanol at 20℃; for 504h; Yield given. Further byproducts given. Yields of byproduct given;
3-(trimethoxysilyl)-1-propanethiol
4420-74-0

3-(trimethoxysilyl)-1-propanethiol

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

A

octa-n-propylsilsesquioxane
18971-71-6

octa-n-propylsilsesquioxane

B

C24H56O12S2Si8

C24H56O12S2Si8

C

C24H56O12S2Si8

C24H56O12S2Si8

D

Si8O12(CH2CH2CH3)7(CH2)3SH
161678-44-0

Si8O12(CH2CH2CH3)7(CH2)3SH

Conditions
ConditionsYield
With hydrogenchloride In methanol at 20℃; for 504h; Yield given. Further byproducts given. Yields of byproduct given;
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

A

octa-n-propylsilsesquioxane
18971-71-6

octa-n-propylsilsesquioxane

B

Si8O12(CH2CH2CH3)6((CH2)3SH)2
161678-45-1

Si8O12(CH2CH2CH3)6((CH2)3SH)2

C

C24H56O12S2Si8

C24H56O12S2Si8

D

Si8O12(CH2CH2CH3)7(CH2)3SH
161678-44-0

Si8O12(CH2CH2CH3)7(CH2)3SH

Conditions
ConditionsYield
With hydrogenchloride; 3-(trimethoxysilyl)-1-propanethiol In methanol at 20℃; for 504h; Yield given. Further byproducts given. Yields of byproduct given;
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

propyl silanetriol

propyl silanetriol

Conditions
ConditionsYield
With acetic acid In isopropyl alcohol pH=3.5-5.5;
With water
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

methyl hypophosphite
14684-31-2

methyl hypophosphite

Conditions
ConditionsYield
With anilinium hypophosphorous salt In acetonitrile for 3h; Heating;100 % Spectr.
With hypophosphorous acid In water; acetonitrile for 3h; Reflux; Inert atmosphere;
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

C5H14O3Si

C5H14O3Si

Conditions
ConditionsYield
With hydrogenchloride In acetone at 29.85℃; pH=4; Kinetics; Further Variations:; pH-values; Reagents;
n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

phenylmagnesium bromide
100-58-3

phenylmagnesium bromide

(phenyl)-propyl-dimethoxysilane

(phenyl)-propyl-dimethoxysilane

1-Bromo-2,4-dimethoxybenzene
17715-69-4

1-Bromo-2,4-dimethoxybenzene

n-propyltrimethoxysilane
1067-25-0

n-propyltrimethoxysilane

(2,4-dimethoxyphenyl)-propyl-dimethoxysilane
344927-18-0

(2,4-dimethoxyphenyl)-propyl-dimethoxysilane

Conditions
ConditionsYield
With n-butyllithium In ethanol; hexane

Trimethoxypropylsilane Specification

The IUPAC name of n-Propyltrimethoxysilane is trimethoxy(propyl)silane. With the CAS registry number 1067-25-0, it is also named as Silane, trimethoxypropyl-. The product's categories are Alkyl; Organics; Functional Materials; Si (Classes of Silicon Compounds); Silane Coupling Agents; Silane Coupling Agents (Intermediates); Si-O Compounds; Trialkoxysilanes; Alkoxy Silanes; Crosslinkers; Crosslinking Agents, and the other registry number is 77030-43-4. Besides, it is colorless or yellowish clear liquid, which should be stored in dry inert gas in closed, cool and dry place. This chemical is stable, but reacts with moisture. Furthermore, it is incompatible with strong oxidizing agents, acids, alcohols, bases, water. In addition, its molecular formula is C6H16O3Si and molecular weight is 164.28. 

The other characteristics of this product can be summarized as: (1)EINECS: 213-926-7; (2)ACD/LogP: 1.20; (3)# of Rule of 5 Violations: 0; (4)ACD/LogD (pH 5.5): 1.2; (5)ACD/LogD (pH 7.4): 1.2; (6)ACD/BCF (pH 5.5): 4.8; (7)ACD/BCF (pH 7.4): 4.8; (8)ACD/KOC (pH 5.5): 106.98; (9)ACD/KOC (pH 7.4): 106.98; (10)H bond acceptors: 3; (11)H bond donors: 0; (12)Freely Rotating Bonds: 5; (13)Index of Refraction: 1.395; (14)Molar Refractivity: 43.79 cm3; (15)Molar Volume: 182.3 cm3; (16)Surface Tension: 20.6 dyne/cm; (17)Density: 0.9 g/cm3; (18)Flash Point: 40.6 °C; (19)Enthalpy of Vaporization: 36.35 kJ/mol; (20)Boiling Point: 142 °C at 760 mmHg; (21)Vapour Pressure: 7.14 mmHg at 25 °C.

Uses of n-Propyltrimethoxysilane: this chemical is an important material in sol-gel production. It may provide a hydrophobic surface treatment for inorganic powders or filler materials. And it is one of the catalyst components for polyolefin production with Ziegler-Natta catalysts. Additionally, it can react with Naphthalene-2,3-diol to get C23H19O4Si(1-)*K(1+).



This reaction needs KOEt and Ethanol by heating. The yield is 94 %.

When you are using this chemical, please be cautious about it as the following: n-Propyltrimethoxysilane is flammable and irritating to eyes, respiratory system and skin. You should wear suitable protective clothing when use it. Moreover, in case of contact with eyes, please rinse immediately with plenty of water and seek medical advice.

People can use the following data to convert to the molecule structure.
(1)SMILES:O(C)[Si](OC)(OC)CCC
(2)InChI:InChI=1/C6H16O3Si/c1-5-6-10(7-2,8-3)9-4/h5-6H2,1-4H3
(3)InChIKey:HQYALQRYBUJWDH-UHFFFAOYAI
(4)Std. InChI:InChI=1S/C6H16O3Si/c1-5-6-10(7-2,8-3)9-4/h5-6H2,1-4H3
(5)Std. InChIKey:HQYALQRYBUJWDH-UHFFFAOYSA-N

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