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338818

Sigma-Aldrich

Hidróxido de amonio solution

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

Sinónimos:

Agua amoniacal, Amoníaco acuoso

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About This Item

Fórmula lineal:
NH4OH
Número de CAS:
1336-21-6
Peso molecular:
35.05
Beilstein:
3587154
Número MDL:
MFCD00066650
Código UNSPSC:
12352106
eCl@ss:
38060103
ID de la sustancia en PubChem:
329754690
NACRES:
NA.21
En este momento no podemos mostrarle ni los precios ni la disponibilidad

Nivel de calidad

100

Ensayo

≥99.99% trace metals basis

Formulario

liquid

lim. expl.

27 %

concentración

28% NH3 in H2O

pH

11.7 (20 °C)

densidad

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

temp. de almacenamiento

2-8°C

cadena SMILES

[NH4+].[OH-]

InChI

1S/H3N.H2O/h1H3;1H2

Clave InChI

VHUUQVKOLVNVRT-UHFFFAOYSA-N

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Descripción general

Ammonium hydroxide solution is also called aqueous ammonia, aqua ammonia, or ammonia water. It is a weak base mainly used as a nitrogen source to prepare other nitrogen-containing organic and inorganic chemicals such as urea, ammonium carbonate, ammonium sulfate, etc.

Aplicación

Ammonium hydroxide solution (28% NH3 in H2O) can be used as:
  • A medium to prepare magnetite (Fe3O4) nanoparticles via a modified controlled chemical coprecipitation method using divalent or trivalent iron salts as iron precursors.      
  • A reagent in ammonolysis.      
  • A solvent to synthesize 1, 4 dihydropyridines via one-pot condensation of an aldehyde and alkyl acetoacetate.

Palabra de señalización

Danger

Frases de peligro

H314,H335,H410

Clasificaciones de peligro

Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1 - STOT SE 3

Órganos de actuación

Respiratory system

Código de clase de almacenamiento

8B - Non-combustible corrosive hazardous materials

Clase de riesgo para el agua (WGK)

WGK 2

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

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Certificados de análisis (COA)

Lot/Batch Number
MKCV7177
MKCW8983
0000268851
MKCT5941
0000268851

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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
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
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
Lucie Nováková et al.
Analytica chimica acta, 853, 637-646 (2014-12-04)
The conditions for the analysis of selected doping substances by UHPSFC-MS/MS were optimized to ensure suitable peak shapes and maximized MS responses. A representative mixture of 31 acidic and basic doping agents was analyzed, in both ESI+ and ESI- modes.
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Questions

1–3 of 3 Questions  

  1. 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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  2. 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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  3. Is the concentration of item 338818-1L expressed as % w/w?

    1 answer

    1. Yes.

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