CAS No.2487-90-3,Trimethoxysilane Suppliers,MSDS download

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Basic Information

Molecular Structure:
CAS No.:	2487-90-3
Name:	Trimethoxysilane
Article Data:	43

Formula:	C₃H₁₀O₃Si
Molecular Weight:	122.196
Synonyms:	LS330;Trimethoxysilan;
EINECS:	219-637-2
Density:	0.96 g/cm³
Melting Point:	-115 °C(lit.)
Boiling Point:	81 °C at 760 mmHg
Flash Point:	24 °F
Appearance:	colorless transparent liquid
Hazard Symbols:	F,T+
Risk Codes:	11-26-36
Safety:	16-36/37/39-45
Transport Information:	UN 3384 6.1/PG 1
PSA:	27.69000
LogP:	-0.35720

Synthetic route

: 67-56-1
methanol

: 2487-90-3
trimethoxysilane

Conditions

Conditions	Yield
With copper(II) nitrate trihydrate; cetyltrimethylammonim bromide; hydrazine hydrate; silicon at 220 - 260℃; under 760.051 Torr; for 1h; Microwave irradiation;	96.9%
With trichlorosilane at 100℃; for 6h; Temperature;	82.6%
With amorphous silicon In paraffin oil at 230℃; for 5h; Inert atmosphere; Schlenk technique;	33%

: 10025-78-2
trichlorosilane

: 2487-90-3
trimethoxysilane

Conditions

Conditions	Yield
With methanol	66%
With CH3OH	66%

: 67-56-1
methanol

A: 2487-90-3
trimethoxysilane

B: 681-84-5
tetramethylorthosilicate

Conditions

Conditions	Yield
With amorphous silicon In paraffin oil at 300℃; for 6h; Reagent/catalyst; Solvent; Temperature; Inert atmosphere; Schlenk technique;	A 24% B 21%
With copper; silicon at 259.9℃; under 742.6 Torr; for 5h; Product distribution; preheating at 623 K for 3 h; other reaction times, temperatures, and partial pressures;
With copper(l) chloride; silicon at 219.9℃; under 442.5 Torr; Kinetics; temperature- and pressure dependence;

: 67-56-1
methanol

A: 2487-90-3
trimethoxysilane

B: 681-84-5
tetramethylorthosilicate

C: 5314-52-3
dimethoxysilane

D: 16881-77-9
(dimethoxy)methylsilane

Conditions

Conditions	Yield
With thiophene; silicon grains; copper(l) chloride at 379.85℃; under 315.025 Torr;	A n/a B n/a C n/a D 10%
With thiophene; silicon grains; copper(l) chloride at 379.85 - 449.85℃; under 315.025 Torr; for 3h;

...Expand

: 67-56-1
methanol

: 1471-03-0
allyl propyl ether

A: 2487-90-3
trimethoxysilane

B: 18147-35-8
allyltrimethoxysilane

C: C5H14O3Si

Conditions

Conditions	Yield
With copper(l) chloride; silicon at 239.9℃; Mechanism; also with allyl ethyl ether and allyl methyl sulfide;

...Expand

: 67-56-1
methanol

: 74-85-1
ethene

A: 2487-90-3
trimethoxysilane

B: 681-84-5
tetramethylorthosilicate

C: 5314-55-6
ethyltrimethoxysilane

D: 19753-84-5
ethyl dimethoxy silane

Conditions

Conditions	Yield
With copper(l) chloride; silicon In toluene at 159.9℃; under 3040 Torr; for 3h; Product distribution; Mechanism; also ethanol; other solvents; effect of the amount of methanol on the silicon conversion and selectivity for organomethoxysilanes; var. pressures, times and temperatures;

...Expand

: 67-56-1
methanol

silane: silane

copper: copper

A: 2487-90-3
trimethoxysilane

B: 681-84-5
tetramethylorthosilicate

C: 5314-52-3
dimethoxysilane

...Expand

: 67-56-1
methanol

A: 2487-90-3
trimethoxysilane

B dimethoxysilane and tetramethyl silicate: dimethoxysilane and tetramethyl silicate

Conditions

Conditions	Yield
With copper; monosilane

H3 BO3: H3 BO3

NaOCH3 powder: NaOCH3 powder

: 124-41-4
sodium methylate

: 11113-50-1
boric acid

: 7440-21-3
silicon

: 2487-90-3
trimethoxysilane

...Expand

: 67-56-1
methanol

: 7440-21-3
silicon

A: 2487-90-3
trimethoxysilane

B: 681-84-5
tetramethylorthosilicate

C: 1112-39-6
dimethyldimethoxysilan

Conditions

Conditions	Yield
With sodium chloride at 150℃; Product distribution / selectivity;
With sodium chloride; copper(I) oxide at 150℃; Product distribution / selectivity;

...Expand

Raw Materials

7440-21-3

681-84-5

10025-78-2

67-56-1

Downstream Products

540-54-5

429-60-7

Total:133 Page 1 of 4 1 2 3 4 Next>>

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Consensus Reports

Reported in EPA TSCA Inventory.

Standards and Recommendations

DOT Classification: 6.1; Label: Poison, Flammable Liquid

Specification

The Trimethoxy silane, with the CAS registry number 2487-90-3, is also known as Silane, trimethoxy-. It belongs to the product categories of Alkoxy Silanes; Organometallic Reagents; Organosilicon; Trialkoxysilanes; OthersSilsesquioxanes: Poss Nanohybrids; Poss Precursors and Intermediates; RSi(OR)3Organometallic Reagents. Its EINECS registry number is 219-637-2. Its IUPAC name is called trimethoxysilane. This chemical's classification code is Skin / Eye Irritant. It is colorless clear liquid. In addition, it should be stored in a closed containers in a cool, dry place. This chemical can be used as intermediates for the synthesis of silicon and a variety of silane coupling agent.

Physical properties of Trimethoxy silane: (1)ACD/LogP: 3.11; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.11; (4)ACD/LogD (pH 7.4): 3.11; (5)ACD/BCF (pH 5.5): 134.98; (6)ACD/BCF (pH 7.4): 134.98; (7)ACD/KOC (pH 5.5): 1165.34; (8)ACD/KOC (pH 7.4): 1165.34; (9)#H bond acceptors: 3; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 3; (12)Density: 0.96 g/mL at 25 °C(lit.); (13)Flash Point: 24 °F; (14)Melting Point: -115 °C(lit.); (15)Enthalpy of Vaporization: 30.83 kJ/mol; (16)Boiling Point: 81 °C at 760 mmHg; (17)Vapour Pressure: 92.6 mmHg at 25°C.

Preparation: this chemical can be prepared by silica fume and methanol. This reaction will need the catalyst copper.

Uses of Trimethoxy silane: it can be used to produce (E)-1,4-dimethoxy-2-trimethoxysilyl-2-buten at ambient temperature. This reaction will need Rh(I)-catalyst and solvent tetrahydrofuran with reaction time of 2 hours. The yield is about 98%.

When you are using this chemical, please be cautious about it as the following:
This chemical may catch fire in contact with air which only need brief contact with an ignition source and has a very low flash point or evolve highly flammable gases in contact with water. This chemical that at very low levels may cause damage to health. Highly flammable. It is very toxic by inhalation. It is irritating to eyes. Keep away from sources of ignition - No smoking. Whenever you will contact it, please wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell seek medical advice immediately (show the label where possible).

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: CO[Si](OC)OC
(2)InChI: InChI=1S/C3H9O3Si/c1-4-7(5-2)6-3/h1-3H3
(3)InChIKey: PZJJKWKADRNWSW-UHFFFAOYSA-N

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Source
rabbit	LD50	skin	6300uL/kg (6.3mL/kg)	American Industrial Hygiene Association Journal. Vol. 30, Pg. 470, 1969.
rat	LC50	inhalation	42ppm/4H (42ppm)	Toxicologist. Vol. 13, Pg. 152, 1993.
rat	LD50	oral	1560uL/kg (1.56mL/kg)	Journal of Toxicology, Cutaneous and Ocular Toxicology. Vol. 15, Pg. 261, 1996.