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
Wichtige Dokumente
56749
Imidazol
BioUltra, ≥99.5% (GC)
Synonym(e):
1,3-Diaza-2,4-cyclopentadien, Glyoxalin
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About This Item
Empfohlene Produkte
Dampfdruck
<1 mmHg ( 20 °C)
Qualitätsniveau
Produktlinie
BioUltra
Assay
≥99.5% (GC)
Form
powder or crystals
Verunreinigungen
insoluble matter, passes filter test
≤0.2% water
Glührückstand (900 °C)
≤0.05%
pH-Wert
9.5-11.0 (25 °C, 0.1 M in H2O)
pKa (25 °C)
6.95
bp
256 °C (lit.)
mp (Schmelzpunkt)
88-91 °C (lit.)
Löslichkeit
H2O: 0.1 M at 20 °C, clear, colorless
Anionenspuren
chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg
Kationenspuren
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
SMILES String
c1c[nH]cn1
InChI
1S/C3H4N2/c1-2-5-3-4-1/h1-3H,(H,4,5)
InChIKey
RAXXELZNTBOGNW-UHFFFAOYSA-N
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Verwandte Kategorien
Anwendung
Sonstige Hinweise
Signalwort
Danger
H-Sätze
Gefahreneinstufungen
Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1C
Lagerklassenschlüssel
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGK
WGK 2
Flammpunkt (°F)
293.0 °F - closed cup
Flammpunkt (°C)
145 °C - closed cup
Persönliche Schutzausrüstung
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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/449/386/product-dating-information-mk.pdfHelpful?
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