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Safety Information

679259

Sigma-Aldrich

Tetramethyl orthosilicate

deposition grade, ≥98%, ≥99.9% trace metals basis

Synonym(s):

Tetramethoxysilane

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25 G
CN¥927.94

CN¥927.94

Available to ship onApril 27, 2025Details

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25 G
CN¥927.94

About This Item

Linear Formula:
Si(OCH3)4
CAS Number:
681-84-5
Molecular Weight:
152.22
Beilstein:
1699658
EC Number:
211-656-4
MDL number:
MFCD00008341
UNSPSC Code:
12352103
PubChem Substance ID:
24885480
NACRES:
NA.23

CN¥927.94

Available to ship onApril 27, 2025Details

Request a Bulk Order

grade

deposition grade

vapor density

5.25 (vs air)

vapor pressure

13 hPa ( 20 °C)

Assay

≥98%
≥99.9% trace metals basis

form

liquid

refractive index

n20/D 1.368 (lit.)

bp

121-122 °C (lit.)

mp

−4 °C (lit.)

density

1.023 g/mL at 25 °C (lit.)

SMILES string

CO[Si](OC)(OC)OC

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Show Differences

1 of 4

This Item
864774959886473
(−)-松油烯-4-醇 ≥95.0% (sum of enantiomers, GC)

11584

(−)-松油烯-4-醇

(+)-萜品烯-4-醇 analytical standard

86477

(+)-萜品烯-4-醇

(−)-松油烯-4-醇 analytical standard

49598

(−)-松油烯-4-醇

α-松油烯 ≥95.0% (GC)

86473

α-松油烯

assay

≥95.0% (sum of enantiomers, GC)

assay

≥98.0% (sum of enantiomers, GC)

assay

≥95.0% (sum of enantiomers, GC)

assay

≥95.0% (GC)

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

-

density

0.934 g/mL at 20 °C

density

0.933 g/mL at 20 °C (lit.)

density

0.934 g/mL at 20 °C

density

0.837 g/mL at 25 °C (lit.)

refractive index

n20/D 1.479

refractive index

n20/D 1.479

refractive index

-

refractive index

n20/D 1.478 (lit.)

optical activity

[α]20/D -25±6°, neat

optical activity

-

optical activity

[α]/D -25±6°, neat

optical activity

-

optical purity

enantiomeric ratio: ~2:1

optical purity

enantiomeric ratio: ~2:1

optical purity

enantiomeric ratio: ~2:1

optical purity

-

Application

Used in the sol-gel synthesis of chromium-doped silicates and in the formation of hexagonal mesoporous silica layers.

Signal Word

Danger

Hazard Statements

H226,H315,H318,H330

Hazard Classifications

Acute Tox. 1 Inhalation - Eye Dam. 1 - Flam. Liq. 3 - Skin Irrit. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

78.8 °F - closed cup

Flash Point(C)

26 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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    Certificates of Analysis (COA)

    Lot/Batch Number
    MKCS9865
    MKCG1788
    MKBN8236V
    MKBN7452V
    MKBJ8106V

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    Josef Planeta et al.
    Journal of chromatography. A, 1217(36), 5737-5740 (2010-08-03)
    The temperature effects during the sol-gel process and ageing of the silica-based monolith on the structure and separation efficiency of the capillary columns (100microm i.d., 150mm) for HPLC separations were studied. The tested columns were synthesized from a mixture of
    Shota Miyazaki et al.
    Journal of chromatography. A, 1218(15), 1988-1994 (2010-12-24)
    Chromatographic properties of a new type of monolithic silica rod columns were examined. Silica rod columns employed for the study were prepared from tetramethoxysilane, modified with octadecylsilyl moieties, and encased in a stainless-steel protective column with two polymer layers between
    Carmen Carrasquilla et al.
    Journal of the American Chemical Society, 134(26), 10998-11005 (2012-06-26)
    Structure-switching, fluorescence-signaling DNA and RNA aptamers have been reported as highly versatile molecular recognition elements for biosensor development. While structure-switching DNA aptamers have been utilized for solid-phase sensing, equivalent RNA aptamers have yet to be successfully utilized in solid-phase sensors
    Yan Fang et al.
    Journal of chromatography. A, 1217(41), 6405-6412 (2010-09-03)
    A simple capillary flow porometer (CFP) was assembled for through-pore structure characterization of monolithic capillary liquid chromatography columns in their original chromatographic forms. Determination of differential pressures and flow rates through dry and wet short capillary segments provided necessary information
    Zian Lin et al.
    Chemical communications (Cambridge, England), 47(34), 9675-9677 (2011-07-30)
    An inorganic-organic hybrid affinity monolithic column was synthesized by a novel "one-pot" approach. The resulting hybrid affinity monoliths have potential applications in specific recognition and enrichment of glycoproteins.
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