Pular para o conteúdo
Merck
Todas as fotos(4)

Documentos Principais

Visualizar Toda a Documentação

277908

Sigma-Aldrich

Ammonium molybdate

99.98% trace metals basis

Sinônimo(s):

Ammonium orthomolybdate, Diammonium molybdate

Faça loginpara ver os preços organizacionais e de contrato
Todas as fotos(4)

About This Item

Fórmula linear:
(NH4)2MoO4
Número CAS:
13106-76-8
Peso molecular:
196.01
Número CE:
236-031-3
Número MDL:
MFCD00011596
Código UNSPSC:
12352302
ID de substância PubChem:
24856791
NACRES:
NA.23
Preço e disponibilidade não estão disponíveis no momento.

Nível de qualidade

100

Ensaio

99.98% trace metals basis

Formulário

solid

adequação da reação

reagent type: catalyst
core: molybdenum

técnica(s)

electron microscopy: suitable

Impurezas

≤250.0 ppm Trace Metal Analysis

solubilidade

ethanol: insoluble(lit.)

cadeia de caracteres SMILES

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

InChI

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

chave InChI

LZRXBDCICLHKEN-UHFFFAOYSA-L

Procurando produtos similares? Visita Guia de comparação de produtos

Categorias relacionadas

Descrição geral

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

Aplicação

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

Palavra indicadora

Warning

Frases de perigo

H302

Declarações de precaução

P264 - P270 - P301 + P312 - P501

Classificações de perigo

Acute Tox. 4 Oral

Código de classe de armazenamento

13 - Non Combustible Solids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

dust mask type N95 (US), Eyeshields, Gloves

Escolha uma das versões mais recentes:

Certificados de análise (COA)

Lot/Batch Number
0000414337
0000414335
0000414335
0000414337
0000404024

Não está vendo a versão correta?

Se precisar de uma versão específica, você pode procurar um certificado específico pelo número do lote ou da remessa.

Pesquise por COA

Já possui este produto?

Encontre a documentação dos produtos que você adquiriu recentemente na biblioteca de documentos.

Visite a Biblioteca de Documentos

Os clientes também visualizaram

Slide 1 of 4

1 of 4

Vanadate-molybdate reagent p.a.

Supelco

94685

Vanadate-molybdate reagent

Potassium molybdate 98%

Sigma-Aldrich

308390

Potassium molybdate

Fiske-Subbarow reducer

Sigma-Aldrich

F5428

Fiske-Subbarow reducer

Potassium antimony(III) tartrate hydrate 99.95% trace metals basis

Sigma-Aldrich

230057

Potassium antimony(III) tartrate hydrate

Handbook of Non-Ferrous Metal Powders: Technologies and Applications null
Negative staining
Harris JR et al.
Electron Microscopy in Biology (1991)
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
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)
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
Exibir todos os documentos relacionados

Questions

1–2 of 2 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

      Helpful?

  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

      Helpful?

Reviews

No rating value

Active Filters

Nossa equipe de cientistas tem experiência em todas as áreas de pesquisa, incluindo Life Sciences, ciência de materiais, síntese química, cromatografia, química analítica e muitas outras.

Entre em contato com a assistência técnica