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338818

Sigma-Aldrich

Ammoniumhydroxid -Lösung

28% NH3 in H2O, ≥99.99% trace metals basis

Synonym(e):

Ammoniak wässrig -Lösung, Ammoniakwasser

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5 ML
CHF 75.90
100 ML
CHF 139.00
1 L
CHF 822.00

CHF 75.90

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5 ML
CHF 75.90
100 ML
CHF 139.00
1 L
CHF 822.00

About This Item

Lineare Formel:
NH4OH
CAS-Nummer:
1336-21-6
Molekulargewicht:
35.05
Beilstein:
3587154
MDL-Nummer:
MFCD00066650
UNSPSC-Code:
12352106
eCl@ss:
38060103
PubChem Substanz-ID:
329754690
NACRES:
NA.21

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Qualitätsniveau

100

Assay

≥99.99% trace metals basis

Form

liquid

Expl.-Gr.

27 %

Konzentration

28% NH3 in H2O

pH-Wert

11.7 (20 °C)

Dichte

0.9 g/mL at 25 °C (lit.)
0.9 g/mL at 25 °C

Lagertemp.

2-8°C

SMILES String

[NH4+].[OH-]

InChI

1S/H3N.H2O/h1H3;1H2

InChIKey

VHUUQVKOLVNVRT-UHFFFAOYSA-N

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Allgemeine Beschreibung

Ammoniumhydroxidlösung nennt man auch wässrige Ammoniaklösung, Salmiakgeist oder Ammoniakwasser. Sie ist eine schwache Base, die vor allem als Stickstoffquelle bei der Herstellung anderer stickstoffhaltiger organischer oder anorganischer Chemikalien wie Harnstoff, Ammoniumcarbonat, Ammoniumsulfat usw. verwendet wird.

Anwendung

Ammoniumhydroxidlösung (28 % NH3 in H2O) kann wie folgt verwendet werden:
  • Als Medium zur Herstellung von Magnetit- (Fe3O4-) Nanopartikeln mittels eines modifizierten, kontrollierten, chemischen Kopräzipitationsverfahrens mit zweiwertigen oder dreiwertigen Eisensalzen als Eisenvorläufer.      
  • Als Reagens in der Ammonolyse      
  • Als Lösungsmittel zur Synthese von 1,4-Dihydropyridinen über eine Eintopf-Kondensation eines Aldehyds und eines Alkylacetoacetats.

Signalwort

Danger

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

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
MKCV7177
MKCW8983
0000268851
MKCT5941
0000268851

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Die Dokumentenbibliothek aufrufen

Konstantin Chingin et al.
Analytical chemistry, 84(15), 6856-6862 (2012-07-12)
We introduce an online multiple-junction capillary isoelectric focusing fractionator (OMJ-CIEF) for separation of biological molecules in solution by pI. In OMJ-CIEF, the separation capillary is divided into seven equal sections joined with each other via tubular Nafion membrane insertions. Each
Mengqi Li et al.
Cell metabolism, 30(3), 508-524 (2019-06-18)
Fructose-1,6-bisphosphate (FBP) aldolase links sensing of declining glucose availability to AMPK activation via the lysosomal pathway. However, how aldolase transmits lack of occupancy by FBP to AMPK activation remains unclear. Here, we show that FBP-unoccupied aldolase interacts with and inhibits
Aurélie Periat et al.
Journal of chromatography. A, 1356, 211-220 (2014-07-16)
In this study, the influence of electrospray ionization (ESI) source design on the overall sensitivity achieved in hydrophilic interaction chromatography (HILIC) and reversed phase liquid chromatography (RPLC), was investigated. State-of-the-art triple quadrupole mass analyzers from AB Sciex, Agilent Technologies and
J C Naviaux et al.
Translational psychiatry, 4, e400-e400 (2014-06-18)
Autism spectrum disorders (ASDs) now affect 1-2% of the children born in the United States. Hundreds of genetic, metabolic and environmental factors are known to increase the risk of ASD. Similar factors are known to influence the risk of schizophrenia
Mohammed Anwar et al.
International journal of pharmaceutics, 468(1-2), 158-164 (2014-04-22)
Nano-sized curcumin-loaded super-paramagnetic iron oxide nanoparticles (CUR-OA-SPIONs) were synthesized chemically by co-precipitation method using oleic acid as a stabilizer and Myrj 52 as a surfactant. The synthesized nanoparticles were characterized for their shape, size, surface morphology, electrokinetic potential, magnetic properties
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Questions

1–3 of 3 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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

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  3. Is the concentration of item 338818-1L expressed as % w/w?

    1 answer

    1. Yes.

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