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
221228
Ammoniumhydroxid -Lösung
ACS reagent, 28.0-30.0% NH3 basis
Synonym(e):
Ammoniak wässrig -Lösung, Ammoniakwasser
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Qualität
ACS reagent
Qualitätsniveau
Form
liquid
Selbstzündungstemp.
1204 °F
Expl.-Gr.
27 %
Konzentration
28.0-30.0% NH3
Verunreinigungen
MnO4- reducers, passes test
≤0.002% CO2
Glührückstand
≤0.002%
pH-Wert
11.7 (20 °C)
Löslichkeit
water: soluble
Dichte
0.9 g/mL at 25 °C (lit.)
Anionenspuren
chloride (Cl-): ≤0.5 ppm
nitrate (NO3-): ≤2 ppm
phosphate (PO43-): ≤2 ppm
sulfate (SO42-): ≤2 ppm
Kationenspuren
Fe: ≤0.2 ppm
heavy metals: ≤0.5 ppm (by ICP)
Lagertemp.
2-8°C
SMILES String
[NH4+].[OH-]
InChI
1S/H3N.H2O/h1H3;1H2
InChIKey
VHUUQVKOLVNVRT-UHFFFAOYSA-N
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Dieser Artikel | 338818 | 30501-M | 09859 |
|---|---|---|---|
| concentration 28.0-30.0% NH3 | concentration 28% NH3 in H2O | concentration ≥25% NH3 | concentration ~1 M NH3 in H2O (T) |
| grade ACS reagent | grade - | grade - | grade - |
| Quality Level 200 | Quality Level 100 | Quality Level 100 | Quality Level 200 |
| form liquid | form liquid | form liquid | form liquid |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C |
| pH 11.7 (20 °C) | pH 11.7 (20 °C) | pH - | pH - |
Allgemeine Beschreibung
Anwendung
- Als Medium zur Herstellung von Magnetit (Fe3O4)-Nanopartikeln mittels einem modifizierten, regulierten, chemischen Kopräzipitationsverfahren.[2]
- Als Lösungsmittel und Reagens zur Herstellung von 4-Aryl- und 4-Alkyl-2,6-Dimethyl-1,4-Dihydro-3,5-Pyridindicarboxylaten mittels Hantzsch-Synthese in einem Mikrowellen-Hohlraum-Synthesizer.[3]
Verpackung
Sonstige Hinweise
Signalwort
Danger
H-Sätze
Gefahreneinstufungen
Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1 - STOT SE 3
Zielorgane
Respiratory system
Lagerklassenschlüssel
8B - Non-combustible corrosive hazardous materials
WGK
WGK 2
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
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How can I determine the shelf life / expiration / retest date of this product?
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Salve, il valore di concentrazione è in peso o in volume? Grazie
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The product's concentration is expressed as % weight/weight.
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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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