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277908

Ammonium molybdate

99.98% trace metals basis

Synonym(s):

Ammonium orthomolybdate, Diammonium molybdate

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About This Item

Linear Formula:
(NH4)2MoO4
CAS Number:
13106-76-8
Molecular Weight:
196.01
NACRES:
NA.23
PubChem Substance ID:
24856791
UNSPSC Code:
12352302
EC Number:
236-031-3
MDL number:
MFCD00011596
Assay:
99.98% trace metals basis
Form:
solid
Solubility:
ethanol: insoluble(lit.)
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assay

99.98% trace metals basis

form

solid

reaction suitability

reagent type: catalyst

technique(s)

electron microscopy: suitable

impurities

≤250.0 ppm Trace Metal Analysis

solubility

ethanol: insoluble(lit.)

SMILES string

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

InChI

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

InChI key

LZRXBDCICLHKEN-UHFFFAOYSA-L

General description

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

Application

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

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Class I Designated Chemical Substances

prtr

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

277908-20G:4.548173935546E12 + 277908-100G:4.548173935539E12 + 277908-5G:4.548173935553E12

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Certificates of Analysis (COA)

Lot/Batch Number
01129HW
01902LD
05243KD
16104MI
14813EB

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Negative staining
Harris JR et al.
Electron Microscopy in Biology (1991)
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
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