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.pdf
1.05426
Ammonia solution
32%, EMPLURA®
Synonym(e):
Ammoniumhydroxid -Lösung, Ammoniak wässrig -Lösung, Ammoniakwasser
About This Item
Empfohlene Produkte
Produktbezeichnung
Ammoniaklösung 32 %, EMPLURA®
Dampfdruck
837 hPa ( 20 °C)
Qualitätsniveau
Produktlinie
EMPLURA®
Form
liquid
Expl.-Gr.
27 %
Konzentration
≥30% (NH3, acidimetric)
Verunreinigungen
≤0.0001% Heavy metals (as Pb)
≤0.0005% Fe (Iron)
≤0.0008% Substances reducing potassium permanganate (as O)
≤0.002% Chloride (Cl)
≤0.003% Sulphate (SO?)
Glührückstand
≤0.003% (as sulphates)
Farbe
APHA: ≤10
bp
37.7 °C/1013 hPa
mp (Schmelzpunkt)
-91.5 °C
Dichte
0.9 g/mL at 25 °C (lit.)
Lagertemp.
2-30°C
SMILES String
[NH4+].[OH-]
InChI
1S/H3N.H2O/h1H3;1H2
InChIKey
VHUUQVKOLVNVRT-UHFFFAOYSA-N
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Verwandte Kategorien
Anwendung
- Highly Efficient Recovery of Au(I) from Gold Leaching Solution Using Sodium Dimethyldithiocarbamate.: Diese Studie untersucht die effektive Rückgewinnung von Gold unter Verwendung von Natriumdimethyldithiocarbamat in einer ammoniakreichen Umgebung und beleuchtet die Wechselwirkung mit der Ammoniaklösung und ihre Auswirkungen auf den Laugungsprozess (Yang et al., 2024).
- Oxidation mechanism of pyrite in a thiosulfate solution: electrochemical impedance (EIS) and in situ Raman spectroscopy.: Untersucht die Oxidationsprozesse von Pyrit in Thiosulfatlösungen unter Verwendung von Ammoniak sowie die elektrochemischen Eigenschaften und die Kinetik des Oxidationsmechanismus (Tamayo et al., 2023).
Verpackung
Bitte beachten Sie die folgenden Ersetzungen:
1054261000 (1-Liter-Glasflasche) ersetzt durch 1054261011 (1-Liter-HDPE-Flasche)
1054262500 (2,5-Liter-Glasflasche) ersetzt durch 1054262511 (2,5-Liter-HDPE-Flasche)
Weitere Informationen über unsere ergonomischen und unzerbrechlichen HDPE-Flaschen finden Sie hier: www.SigmaAldrich.com/hdpe-bottle
Hinweis zur Analyse
Identität: entspricht
Farbe: ≤ 10 Hazen
Chlorid (Cl): ≤ 0,002 %
Sulfat (SO₄): ≤ 0,003 %
Schwermetalle (als Pb): ≤ 0,0001 %
Fe (Eisen): ≤ 0,0005 %
Kaliumpermanganat reduzierende Substanzen (als O): ≤ 0,0008 %
Glührückstand (als Sulfate): ≤ 0,003 %
Rechtliche Hinweise
Signalwort
Danger
H-Sätze
Gefahreneinstufungen
Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1B - STOT SE 3
Zielorgane
Respiratory system
Lagerklassenschlüssel
8B - Non-combustible, corrosive hazardous materials
WGK
WGK 2
Analysenzertifikate (COA)
Suchen Sie nach Analysenzertifikate (COA), indem Sie die Lot-/Chargennummer des Produkts eingeben. Lot- und Chargennummern sind auf dem Produktetikett hinter den Wörtern ‘Lot’ oder ‘Batch’ (Lot oder Charge) zu finden.
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In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.
Kunden haben sich ebenfalls angesehen
Protokolle
A guide to create solvent systems used for the thin-layer chromatography assay of Novabiochem products.
Verwandter Inhalt
Our ergonomic 1 L HDPE bottle for acids, bases, and solvents provide an alternative to glass chemical bottles for lab safety in pouring & handling of hazardous chemicals in the laboratory.
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How can I determine the shelf life / expiration / retest date of this product?
1 Antwort-
Hilfreich?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 Antwort-
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
Hilfreich?
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Is the 32% NH3 concentration expressed as %w/w?
1 Antwort-
The concentration is expressed as %w/w.
Hilfreich?
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Is Emplura ammonia solution 32% considered technical grade or higher purity?
1 Antwort-
This product is considered research grade.
Hilfreich?
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you say that 28% solution of NH3 is a 56.6% NH4OH for calculating molarity. Can you explain the conversion of 28% to 56.6%? What would be the molarity of a 31% NH3 solution of ammonium hydroxide?
1 Antwort-
It should be 57.6% NH4OH, not 56.6% NH4OH. Using 17.034 as the molecular weight for NH3 and 35.0494 as the molecular weight weight for NH4OH, the calculation would be: (28 grams NH3/100 grams of solution) X (35.0494 grams NH4OH / 17.034 grams NH3) = 57.6 grams NH4OH per 100 grams of solution, or 57.6%.
To calculate the molarity, the density of a 31% NH3 solution is needed. For the calculation, please note that the weight percentage is for NH3, molecular weight 17.034. (31 grams of NH3 / 100 grams of solution) X (890 grams of solution / Liter of solution) X (1 mole NH3 / 17.034 grams NH3) X (1 mole NH4OH / 1 mole NH3) = 16.2 (16.197) moles NH4OH per Liter. The molarity would be 16.2 M.
Hilfreich?
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