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
56749
Imidazol
BioUltra, ≥99.5% (GC)
Synonym(e):
1,3-Diaza-2,4-cyclopentadien, Glyoxalin
Größe auswählen
€ 86,70
€ 358,00
€ 1.120,00
Über diesen Artikel
Fortfahren mit
InChI key
RAXXELZNTBOGNW-UHFFFAOYSA-N
InChI
1S/C3H4N2/c1-2-5-3-4-1/h1-3H,(H,4,5)
SMILES string
c1c[nH]cn1
vapor pressure
<1 mmHg ( 20 °C)
product line
BioUltra
assay
≥99.5% (GC)
form
powder or crystals
impurities
insoluble matter, passes filter test, ≤0.2% water
ign. residue (900 °C)
≤0.05%
pH
9.5-11.0 (25 °C, 0.1 M in H2O)
pKa (25 °C)
6.95
bp
256 °C (lit.)
Quality Level
mp
88-91 °C (lit.)
solubility
H2O: 0.1 M at 20 °C, clear, colorless
anion traces
chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg
cation traces
Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg
λ
0.1 M in H2O
UV absorption
λ: 260 nm Amax: 0.10, λ: 280 nm Amax: 0.10
Suchen Sie nach ähnlichen Produkten? Aufrufen Leitfaden zum Produktvergleich
Verwandte Kategorien
1 of 4
Dieser Artikel | |||
|---|---|---|---|
| assay ≥99.5% (GC) | assay ≥99.5% (GC) | assay ≥99.5% (GC) | assay 99% |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| product line BioUltra | product line BioUltra | product line - | product line ReagentPlus® |
| form powder or crystals | form flakes, powder or crystals | form flakes, powder or crystals | form crystalline |
| solubility H2O: 0.1 M at 20 °C, clear, colorless | solubility H2O: 0.1 M at 20 °C, clear, colorless | solubility alcohol: soluble(lit.), chloroform: soluble(lit.), pyridine: soluble(lit.), water: soluble(lit.) | solubility - |
| pH 9.5-11.0 (25 °C, 0.1 M in H2O) | pH 9.5-11.0 (25 °C, 0.1 M in H2O) | pH 9.5-11.0 (25 °C, 50 mg/mL in H2O) | pH 9-11 at 100 g/L (23 °C) |
Application
Other Notes
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1C
Lagerklasse
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
Zulassungslistungen
Zulassungslistungen werden hauptsächlich für chemische Produkte erstellt. Für nicht-chemische Produkte können hier nur begrenzte Angaben gemacht werden. Kein Eintrag bedeutet, dass keine der Komponenten gelistet ist. Es liegt in der Verantwortung des Benutzers, die sichere und legale Verwendung des Produkts zu gewährleisten.
288-32-4
Hier finden Sie alle aktuellen Versionen:
Besitzen Sie dieses Produkt bereits?
In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.
Verwandter Inhalt
-
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?
-
Active Filters
Unser Team von Wissenschaftlern verfügt über Erfahrung in allen Forschungsbereichen einschließlich Life Science, Materialwissenschaften, chemischer Synthese, Chromatographie, Analytik und vielen mehr..
Setzen Sie sich mit dem technischen Dienst in Verbindung