The UV absorbance of this product at 0.1 M has not been determined. However, the BioUltra Imidazole (product 56749) specification indicates that a 0.1 M solution in water (1 cm pathlength) has maximum UV absorbance at 260 nm and 280 nm of ≤ 0.10. A review of recent lots of 56749 shows typical UV absorbance values of 0.01 at both 260 nm and 280 nm. For additional details, see:
https://www.sigmaaldrich.com/US/en/product/sigma/56749
I202
Imidazole
ReagentPlus®, 99%
Synonym(s):
1,3-Diaza-2,4-cyclopentadiene, Glyoxaline
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| Size/SKU | Availability | Price |
|---|---|---|
5 g | Available to ship TODAYfromMILWAUKEE | $19.00 |
25 g | Available to ship TODAYfromMILWAUKEE | $46.60 |
100 g | Available to ship TODAYfromMILWAUKEE | $83.00 |
500 g | Available to ship TODAYfromMILWAUKEE | $134.00 |
1 kg | Available to ship TODAYfromMILWAUKEE | $267.00 |
2 kg | Available to ship TODAYfromMILWAUKEE | $489.00 |
5 kg | Available to ship TODAYfromMILWAUKEE | $1,040.00 |
About This Item
Linear Formula:
C3H4N2
CAS Number:
Molecular Weight:
68.08
NACRES:
NA.25
PubChem Substance ID:
eCl@ss:
39161001
UNSPSC Code:
12352005
EC Number:
206-019-2
MDL number:
Beilstein/REAXYS Number:
103853
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vapor pressure
<1 mmHg ( 20 °C)
Quality Segment
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
Excellent for buffers in the range of pH 6.2-7.8
Imidazole is a biocompatible molecule that is used as a scaffold for biomimetic applications. It is used as a bioreagent with an ability to hydrogen bond with drugs and proteins. It can be also be used as an additive for the formation of an electrolyte for fuel cell applications.
Legal Information
ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
1 of 1
This Item | |||
|---|---|---|---|
| description ReagentPlus®, 99% | description BioUltra, Molecular Biology, ≥99.5% (GC) | description anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥99% | description United States Pharmacopeia (USP) Reference Standard |
| assay 99% | assay ≥99.5% (GC) | assay ≥99% | assay - |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level - |
| product line ReagentPlus® | product line BioUltra | product line Redi-Dri™ | product line - |
| form crystalline | form powder or crystals, flakes | form solid | form - |
| pH 9-11 at 100 g/L (23 °C) | pH 9.5-11.0 (25 °C, 0.1 M in H2O) | pH 9.5-11.0 (25 °C, 5% in H2O) | pH - |
| mp 88-91 °C (lit.) | mp 88-91 °C (lit.) | mp 88-91 °C (lit.) | mp 88-91 °C (lit.) |
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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
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Can you tell me the absorbance of a 0.1 M solution of this product at 260 and 280 nm?
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How can I determine the shelf life / expiration / retest date of this product?
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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.pdfHelpful?
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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?
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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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