If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
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414247
2-Methyltetrahydrofuran
BioRenewable, anhydrous, ≥99.0%, contains 150-400 ppm BHT as stabilizer
Sustainability features
Synonym(e):
2-MeTHF, Tetrahydro-2-methylfuran, Tetrahydrosilvan
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| Größe/SKU | Verfügbarkeit | Preis |
|---|
Über diesen Artikel
grade
anhydrous
Quality Segment
assay
≥99.0%
form
liquid
contains
150-400 ppm BHT as stabilizer
expl. lim.
0.34-6.3 %
greener alternative product characteristics
Safer Solvents and Auxiliaries
Use of Renewable Feedstocks
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product, Sustainability features
impurities
<0.002% water, <0.005% water (100 mL pkg)
evapn. residue
<0.0003%
refractive index
n20/D 1.406 (lit.)
bp
78-80 °C (lit.)
mp
-136 °C
density
0.86 g/mL at 25 °C (lit.)
SMILES string
CC1CCCO1
InChI
1S/C5H10O/c1-5-3-2-4-6-5/h5H,2-4H2,1H3
InChI key
JWUJQDFVADABEY-UHFFFAOYSA-N
General description
2-Methyltetrahydrofuran (2-MTHF) ist ein 2-Methyl-substituiertes Tetrahydrofuran und wird aus Biomasse hergestellt. Es ist potenziell eine umweltfreundlichere Lösungsmittelalternative für die organische Synthese. Es zeigt Resistenz gegenüber einer Reduktion mit Lithium und ist so ein vielversprechender Kandidat als Elektrolyt in Lithiumbatterien. Seine Polarität und Lewis-Basen-Stärke liegen zwischen Tetrahydrofuran (THF) und Diethylether. Die Ringöffnungsreaktion von 2-MTHF wurde mit Säurechloriden und -iodiden zur Bildung sekundärer Chloride bzw. primärer Iodide untersucht. Bei langfristiger Lagerung bildet Tetrahydrofuran organische Peroxide. Dieser Prozess kann durch die Hinzugabe von Butylhydroxytoluol (BHT) als Stabilisator unterbunden werden. BHT beseitigt die freien Radikale, die für die Bildung von Peroxid erforderlich sind.
Application
Es kann als alternatives Lösungsmittel verwendet werden für:
- DMSO (Dimethylsulfoxid) oder MTBE (Methyl-tert-butylether) bei Reaktionen zur Bildung von C-C-Bindungen, die durch das Enzym Lyase katalysiert werden
- THF bei der Reaktion von Grignard-Reagenzien und Carbonyl-Verbindungen
- Methylenchlorid in einigen biphasischen Reaktionen
Organische Solarzellen
2-Methyltetrahydrofuran (2-MeTHF): Ein aus Biomasse gewonnenes Lösungsmittel mit einem breiten Anwendungsspektrum in der organischen Chemie
Features and Benefits
Packaging
Other Notes
Legal Information
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| description BioRenewable, anhydrous, ≥99.0%, contains 150-400 ppm BHT as stabilizer | description BioRenewable, ReagentPlus®, ≥99.5%, contains 150-400 ppm BHT as stabilizer | description absolute, stored over molecular sieve | description anhydrous, contains 250 ppm BHT as inhibitor, ≥99.9% |
| assay ≥99.0% | assay ≥99.5% | assay ≥99% (GC) | assay ≥99.9% |
| grade anhydrous | grade - | grade - | grade anhydrous |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 200 |
| form liquid | form liquid | form liquid | form liquid |
| refractive index n20/D 1.406 (lit.) | refractive index n20/D 1.406 (lit.) | refractive index n20/D 1.406 (lit.) | refractive index n20/D 1.407 (lit.) |
| bp 78-80 °C (lit.) | bp 78-80 °C (lit.) | bp 78-80 °C (lit.) | bp 65-67 °C (lit.) |
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Signalwort
Danger
Gefahrencodes
Sicherheitshinweise
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Irrit. 2
supp_hazards
Lagerklasse
3 - Flammable liquids
Was ist los?
WGK 2
Flammpunkt (°F)
14.0 °F - closed cup
Flammpunkt (°C)
-10.0 °C - closed cup
PSA (Persönliche Schutzausrüstung)
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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