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Sigma-Aldrich

Ammonium molybdate

99.98% trace metals basis

Sinónimos:

Ammonium orthomolybdate, Diammonium molybdate

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About This Item

Fórmula lineal:
(NH4)2MoO4
Número de CAS:
13106-76-8
Peso molecular:
196.01
Número CE:
236-031-3
Número MDL:
MFCD00011596
Código UNSPSC:
12352302
ID de la sustancia en PubChem:
24856791
NACRES:
NA.23
En este momento no podemos mostrarle ni los precios ni la disponibilidad

grado

for analytical purposes

Nivel de calidad

100

Ensayo

99.98% trace metals basis

Formulario

solid

idoneidad de la reacción

reagent type: catalyst
core: molybdenum

técnicas

electron microscopy: suitable

impurezas

≤250.0 ppm Trace Metal Analysis

solubilidad

ethanol: insoluble(lit.)

cadena SMILES

N.N.O[Mo](O)(=O)=O

InChI

1S/Mo.2H3N.2H2O.2O/h;2*1H3;2*1H2;;/q+2;;;;;;/p-2

Clave InChI

LZRXBDCICLHKEN-UHFFFAOYSA-L

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Descripción general

Ammonium molybdate can be prepared by dissolving molybdenum trioxide in ammonia.[1]

Aplicación

Ammonium molybdate has been used to prepare phosphomolybdates.[2] (NH4)2MoO4 was used as an analytical reagent for quantitative analysis of phosphates, silicates, arsenates and lead in their aqueous solutions.2 At saturated concentration, (NH4)2MoO4 was used to perform cryo-negative staining[3][4] and as a negative stain in biological electron microscopy.[5] Ammonium molybdate was used in study of crystallisation of cell-free-expressed membrane proteins.[6]
Ammonium molybdate has been used to prepare phosphomolybdates.[2] (NH4)2MoO4 was used as an analytical reagent for quantitative analysis of phosphates, silicates, arsenates and lead in their aqueous solutions.[7] At saturated concentration, (NH4)2MoO4 was used to perform cryo-negative staining[3][4] and as a negative stain in biological electron microscopy.[5] Ammonium molybdate was used in study of crystallisation of cell-free-expressed membrane proteins.[6]

Pictogramas

Exclamation mark
GHS07

Palabra de señalización

Warning

Frases de peligro

H302

Clasificaciones de peligro

Acute Tox. 4 Oral

Código de clase de almacenamiento

13 - Non Combustible Solids

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

dust mask type N95 (US), Eyeshields, Gloves

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Certificados de análisis (COA)

Lot/Batch Number
0000414335
0000414337
0000414337
0000414335
0000404024

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Handbook of Non-Ferrous Metal Powders: Technologies and Applications null
S De Carlo et al.
Journal of structural biology, 138(3), 216-226 (2002-09-10)
Beam damage is the main resolution-limiting factor when biological particles are observed by cryoelectron microscopy in a thin vitrified solution film. Furthermore, the low contrast of the specimen frequently makes observation difficult and limits the possibility of image processing. Cryo-negative
M Adrian et al.
Micron (Oxford, England : 1993), 29(2-3), 145-160 (1998-07-31)
A procedure is presented for the preparation of thin layers of vitrified biological suspensions in the presence of ammonium molybdate, which we term cryo-negative staining. The direct blotting of sample plus stain solution on holey carbon supports produces thin aqueous
Effect of the addition of ammonium molybdate on metakaolin-based geopolymer formation: Shrinkage and crystallization
Vidal L, et al.
Powder Technology, 275, 211-219 (2015)
Leandro Silva Costa et al.
Marine drugs, 9(6), 952-966 (2011-07-13)
Fucan is a term used to denominate a type of polysaccharide which contains substantial percentages of l-fucose and sulfate ester groups. We obtained five heterofucans from Sargassum filipendula by proteolytic digestion followed by sequential acetone precipitation. These heterofucans are composed
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    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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    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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