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
I202
Imidazole
ReagentPlus®, 99%
Synonym(s):
1,3-Diaza-2,4-cyclopentadiene, Glyoxaline
Select a Size
| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 5 g | Available to ship onMay 05, 2026fromMILWAUKEE | $19.00 | |
| 25 g | Available to ship onMay 05, 2026fromMILWAUKEE | $46.60 | |
| 100 g | Available to ship onMay 05, 2026fromMILWAUKEE | $83.00 | |
| 500 g | Available to ship onMay 05, 2026fromMILWAUKEE | $134.00 | |
| 1 kg | Available to ship onMay 05, 2026fromMILWAUKEE | $267.00 | |
| 2 kg | Available to ship onMay 05, 2026fromMILWAUKEE | $489.00 | |
| 5 kg | Available to ship onMay 05, 2026fromMILWAUKEE | $1,040.00 |
About This Item
$19.00
Available to ship onMay 05, 2026Details
vapor pressure
<1 mmHg ( 20 °C)
Quality Level
product line
ReagentPlus®
assay
99%
form
crystalline
pH
9-11 at 100 g/L (23 °C)
pKa (25 °C)
6.95
bp
256 °C (lit.)
mp
88-91 °C (lit.)
SMILES string
c1c[nH]cn1
InChI
1S/C3H4N2/c1-2-5-3-4-1/h1-3H,(H,4,5)
InChI key
RAXXELZNTBOGNW-UHFFFAOYSA-N
Application
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| assay 99% | assay 99% | assay ≥99% (titration) | assay ≥99% |
| product line ReagentPlus® | product line ReagentPlus®, Redi-Dri™ | product line - | product line Redi-Dri™ |
| Quality Level 200 | Quality Level 100 | Quality Level 300 | Quality Level 200 |
| form crystalline | form powder | form - | form solid |
| pH 9-11 at 100 g/L (23 °C) | pH 9-11 at 100 g/L (23 °C) | pH 9.5-11.0 (25 °C, 5% in H2O) | pH 9.5-11.0 (25 °C, 5% in H2O) |
| mp 88-91 °C (lit.) | mp 85-92 °C, 88-91 °C (lit.) | mp 88-91 °C (lit.) | mp 88-91 °C (lit.) |
Still not finding the right product?
Explore all of our products under Imidazole
signalword
Danger
hcodes
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
wgk
WGK 2
flash_point_f
293.0 °F - closed cup
flash_point_c
145 °C - closed cup
ppe
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.
Articles
Effective in key synthesis reactions like Knoevenagel condensation, thalidomide synthesis, and Suzuki coupling for sustainable chemical transformations.
Metal-organic frameworks offer high surface area materials for alternative energy applications through simple synthetic strategies.
Related Content
Descubra amortiguadores biológicos de gran pureza para la escala de producción. Garantice la estabilidad, el control del pH y el suministro constante con nuestras soluciones de fabricación especializadas.
Discover high-purity biological buffers for production scale. Ensure stability, pH control, and consistent supply with our expert manufacturing solutions.
Global Trade Item Number
| SKU | GTIN |
|---|---|
| I202-5KG | 04061833848272 |
| I202-5G | 04061832548319 |
| I202-500G | 04061835265404 |
| I202-100G | 04061835265381 |
| I202-1KG | 04061834680673 |
| I202-2KG | 04061833848265 |
| I202-25G | 04061835265398 |
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
Should this solid be handled in a fume hood?
1 answer-
As per the product's Safety Data Sheet:
Section 2.2 GHS Label elements, including precautionary statements:
P260 Do not breathe dust.
P280 Wear protective gloves/ protective clothing/ eye protection/ face protection.
Section 8.1 Control parameters
Contains no substances with occupational exposure limit values.
Use of a fume hood for safe handling of the product is not mandated but is advisable when personal protective equipment as described is not available.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?
-