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679259

Tetramethyl orthosilicate

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

Synonym(s):

Tetramethoxysilane

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About This Item

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

InChI

1S/C4H12O4Si/c1-5-9(6-2,7-3)8-4/h1-4H3

InChI key

LFQCEHFDDXELDD-UHFFFAOYSA-N

Application

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

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Signal Word

Danger

Hazard Classifications

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

Storage Class

3 - Flammable liquids

WGK

WGK 1

Flash Point (°F)

78.8 °F - closed cup

Flash Point (°C)

26 °C - closed cup

PPE (personal protective equipment)

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Poisonous substance

pdsc

Group 4: Flammable liquids + Type 2 petroleums + Hazardous rank III + Water insoluble liquid

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

679259-VAR: + 679259-50G:4548173310916 + 679259-BULK:

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