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
I2399
Imidazole
ACS reagent grade, ≥99% (titration)
Synonym(s):
1,3-Diaza-2,4-cyclopentadiene, Glyoxaline
Select a Size
| Size/SKU | Availability | Price |
|---|
About This Item
Product Name
Imidazole, ACS reagent, ≥99% (titration)
grade
ACS reagent
Quality Segment
vapor pressure
<1 mmHg ( 20 °C)
assay
≥99% (titration)
impurities
≤0.2% water
ign. residue
≤0.1%
pH
9.5-11.0 (25 °C, 5% in H2O)
pKa (25 °C)
6.95
bp
256 °C (lit.)
mp
88-91 °C (lit.)
cation traces
Fe: ≤0.001%
SMILES string
c1c[nH]cn1
InChI
1S/C3H4N2/c1-2-5-3-4-1/h1-3H,(H,4,5)
InChI key
RAXXELZNTBOGNW-UHFFFAOYSA-N
General description
Application
Other Notes
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| description ACS reagent, ≥99% (titration) | description anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥99% | description ReagentPlus®, 99% | description United States Pharmacopeia (USP) Reference Standard |
| assay ≥99% (titration) | assay ≥99% | assay 99% | assay - |
| Quality Level 300 | Quality Level 200 | Quality Level 200 | Quality Level - |
| mp 88-91 °C (lit.) | mp 88-91 °C (lit.) | mp 88-91 °C (lit.) | mp 88-91 °C (lit.) |
| bp 256 °C (lit.) | bp 256 °C (lit.) | bp 256 °C (lit.) | bp 256 °C (lit.) |
| grade ACS reagent | grade anhydrous, ACS reagent | grade - | grade pharmaceutical primary standard |
| pH 9.5-11.0 (25 °C, 5% in H2O) | pH 9.5-11.0 (25 °C, 5% in H2O) | pH 9-11 at 100 g/L (23 °C) | pH - |
Still not finding the right product?
Explore all of our products under Imidazole
Signal Word
Danger
Hazard Codes
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1C
Storage Class
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
Flash Point (°F)
293.0 °F - closed cup
Flash Point (°C)
145 °C - closed cup
PPE (personal protective equipment)
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
-