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
336092
1-Methylimidazole
≥99%, liquid, purified by redistillation
Sustainability features
Synonym(s):
N-Methylimidazole, MeIm
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
100 mL | Check Cart for Availability | $134.00 |
4 x 100 mL | Check Cart for Availability | $399.00 |
1 L | Check Cart for Availability | $433.00 |
2 L | Check Cart for Availability | $641.00 |
About This Item
Product Name
1-Methylimidazole, ≥99%, purified by redistillation
vapor pressure
0.4 mmHg ( 20 °C)
Quality Segment
assay
≥99%
form
liquid
autoignition temp.
977 °F
purified by
redistillation
expl. lim.
15.7 %
greener alternative product characteristics
Catalysis
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product, Sustainability features
impurities
≤19 ppm Triazine, <0.005% water
refractive index
n20/D 1.495 (lit.)
bp
198 °C (lit.)
mp
−6 °C (lit.)
density
1.03 g/mL at 25 °C (lit.), 1.034-1.036 g/mL
greener alternative category
, Aligned
SMILES string
Cn1ccnc1
InChI
1S/C4H6N2/c1-6-3-2-5-4-6/h2-4H,1H3
InChI key
MCTWTZJPVLRJOU-UHFFFAOYSA-N
General description
Application
- 1-(2-hydroxypropyl)-3-methylimidazolium salts used as ionic liquids
- 1,3-dimethylimidazoyl-2-ylidene borane, a stable and easy to handle N-heterocyclic carbene borane
- It can act both as a catalyst and a solvent in the synthesis of aldononitrile acetates from aldoses.
Packaging
1 of 1
This Item | |||
|---|---|---|---|
| description ≥99%, purified by redistillation | description 99% | description 98% | description 97% |
| assay ≥99% | assay 99% | assay 98% | assay 97% |
| Quality Level 300 | Quality Level 200 | Quality Level 100 | Quality Level 100 |
| bp 198 °C (lit.) | bp 267-268 °C (lit.) | bp 82-85 °C/11 mmHg (lit.) | bp 204 °C (lit.) |
| refractive index n20/D 1.495 (lit.) | refractive index - | refractive index n20/D 1.511 (lit.) | refractive index - |
| form liquid | form - | form liquid | form solid |
| mp −6 °C (lit.) | mp 142-143 °C (lit.) | mp - | mp 37-39 °C (lit.) |
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Signal Word
Danger
Hazard Codes
Precautionary Statements
Hazard Classifications
Acute Tox. 3 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 2 - Skin Corr. 1B
Storage Class
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
Flash Point (°F)
197.6 °F - closed cup
Flash Point (°C)
92 °C - closed cup
PPE (personal protective equipment)
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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How can I determine the shelf life / expiration / retest date of this product?
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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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