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Triethyl orthoformate

Name: Triethyl orthoformate
Brand: SIAL

anhydrous, 98%

Synonym(s):

Diethoxymethoxyethane, 1,1,1-Triethoxymethane

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About This Item

Linear Formula:

CH(OC₂H₅)₃

CAS Number:

122-51-0

Molecular Weight:

148.20

UNSPSC Code:

12352001

NACRES:

NA.21

PubChem Substance ID:

24858320

EC Number:

204-550-4

Beilstein/REAXYS Number:

605384

MDL number:

MFCD00009230

Assay:

98%

Grade:

anhydrous

Bp:

146 °C (lit.)

Vapor pressure:

2.9 mmHg ( 20 °C)

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Properties

grade

anhydrous

Quality Segment

100

vapor density

5.11 (vs air)

vapor pressure

2.9 mmHg ( 20 °C)

assay

98%

form

liquid

impurities

<0.003% water, <0.005% water (100 mL pkg)

evapn. residue

<0.0005%

refractive index

n20/D 1.391 (lit.)

bp

146 °C (lit.)

mp

−76 °C (lit.)

density

0.891 g/mL at 25 °C (lit.)

SMILES string

CCOC(OCC)OCC

InChI

1S/C7H16O3/c1-4-8-7(9-5-2)10-6-3/h7H,4-6H2,1-3H3

InChI key

GKASDNZWUGIAMG-UHFFFAOYSA-N

Description

General description

Our anhydrous solvents deliver exceptionally low water content, making them the ideal choice for moisture-sensitive laboratory applications. Packaged in the exclusive Sure/Seal^™ septum bottle system, they are reliably protected against moisture ingress from first use to last drop. The innovative Sure/Seal^™ closure combines an advanced plug-style liner with an airtight elastomer and crimp cap design to ensure consistent product integrity. Three unique liner materials provide optimal chemical compatibility across a broad range of solvents. Sure/Seal^™ packaging is proven to maintain anhydrous conditions even after repeated punctures. With more than 70 products across all major solvent families, available in pack sizes from 100 mL to 2 L, the portfolio meets virtually every laboratory need. By choosing ready-to-use anhydrous solvents in Sure/Seal^™ packaging, researchers eliminate the need for time-consuming and hazardous in-house solvent drying and distillation - saving time, reducing risk, and improving reproducibility.

Application

Anhydrous solvents in Sure/Seal^™ packaging are essential wherever water contamination would compromise experimental results. They are widely used in moisture-sensitive applications such as organic synthesis - including Grignard reactions, organometallic chemistry, and catalysis - as well as in peptide, oligonucleotide, and pharmaceutical synthesis.

Legal Information

Sure/Seal is a trademark of Sigma-Aldrich Co. LLC

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Pictograms

GHS02

Signal Word

Warning

Hazard Codes

H226

Precautionary Statements

P210 - P233 - P240 - P241 - P242 - P243

Hazard Classifications

Flam. Liq. 3

Storage Class

3 - Flammable liquids

Flash Point (°F)

95.0 °F - closed cup

Flash Point (°C)

35 °C - closed cup

PPE (personal protective equipment)

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

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