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A7302 Sigma-Aldrich

Ammonium molybdate tetrahydrate

ACS reagent, 81.0-83.0% MoO3 basis

Synonym: Ammonium heptamolybdate tetrahydrate, Molybdic acid ammonium salt tetrahydrate

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Properties

Related Categories Ammonium Salts, Catalysis and Inorganic Chemistry, Chemical Synthesis, Essential Chemicals, Molecular Biology,
grade   ACS reagent
assay   81.0-83.0% MoO3 basis
impurities   ≤0.005% Insoluble matter
density   2.498 g/mL at 25 °C(lit.)
anion traces   arsenate, phosphate, and silicate (as SiO2): ≤0.001%
  chloride (Cl-): ≤0.002%
  nitrate (NO3-): passes test (limit about 0.003%)
  phosphate (PO43-): ≤5 ppm
  sulfate (SO42-): ≤0.02%
cation traces   Mg: ≤0.005%
  heavy metals (as Pb): ≤0.001%
storage temp.   room temp

Description

Packaging

1 kg in poly bottle

100, 500 g in poly bottle

2.5 kg in poly drum

Quality

May contain darkened ammonium molybdate crystals that are soluble in water.

Price and Availability


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Safety & Documentation

Safety Information

Personal Protective Equipment 
WGK Germany 
1
RTECS 
QA5076000

Documents

Certificate of Analysis

Certificate of Origin

Protocols & Articles

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Peer-Reviewed Papers

References

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Microwave-assisted pretreatment of woody biomass with ammonium molybdate activated by H2O2. Verma P, Watanabe T, Honda Y, et al. Bioresour. Technol. 102(4), 3941-5, (2011)

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Preliminary screening method for the determination of inorganic arsenic in urine. Hua L, Nishida M, Fujiwara A, et al. Leg. Med. (Tokyo.) 11(2), 80-2, (2009)

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Effects of combined treatment with heavy metals and piracetam on learning and memory in rats. Inozemtsev AN, Bokieva SB, Karpukhina OV, et al. Dokl. Biol. Sci. 422, 301-4, (2008)

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A nonradioactive method for detecting phosphates and polyphosphates separated by PAGE. Omelon S and Grynpas M Electrophoresis 28(16), 2808-11, (2007)

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Selective recovery of molybdenum from spent HDS catalyst using oxidative soda ash leach/carbon adsorption method. Park KH, Mohapatra D, and Reddy BR J. Hazard. Mater. 138(2), 311-6, (2006)

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Combination of Pichia membranifaciens and ammonium molybdate for controlling blue mould caused by Penicillium expansum in peach fruit. Cao S, Yuan Y, Hu Z, et al. Int. J. Food Microbiol. 141(3), 173-6, (2010)

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Characterization of arsenic (V) and arsenic (III) in water samples using ammonium molybdate and estimation by graphite furnace atomic absorption spectroscopy. Sounderajan S, Udas AC, and Venkataramani B J. Hazard. Mater. 149(1), 238-42, (2007)

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Formation of two-dimensional crystals of icosahedral RNA viruses. Lorber B, Adrian M, Witz J, et al. Micron 39(4), 431-46, (2008)

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Flow injection analysis of nanomolar silicate using long pathlength absorbance spectroscopy. Ma J and Byrne RH Talanta 88, 484-9, (2012)

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Room temperature synthesis of curved ammonium copper molybdate nanoflake and its hierarchical architecture. Xu J, Xue D, and Zhu Y J. Phys. Chem. B 110(35), 17400-5, (2006)

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A simple spectrophotometric method for the determination of phosphate in soil, detergents, water, bone and food samples through the formation of phosphomolybdate complex followed by its reduction with thiourea. Shyla B, Mahadevaiah, and Nagendrappa G Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 78(1), 497-502, (2011)

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Cryonegative staining of macromolecular assemblies. De Carlo S and Stark H Meth. Enzymol. 481, 127-45, (2010)

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Synthesis and antitumoral activity of gelatin/polyoxometalate hybrid nanoparticles. Guo R, Cheng Y, Ding D, et al. Macromol. Biosci. 11(6), 839-47, (2011)

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High-performance liquid chromatography method for determination of hydrogen peroxide in aqueous solution and application to simulated Martian soil and related materials. Steinberg SM Environ. Monit. Assess. 185(5), 3749-57, (2013)

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Ultrasonic-assisted synthesis of highly dispersed MoO3 nanospheres using 3-mercaptopropyltrimethoxysilane. Du K, Fu W, Wei R, et al. Ultrason. Sonochem. 15(3), 233-8, (2008)

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Spectrophotometric determination of trazodone, amineptine and amitriptyline hydrochlorides through ion-pair formation with molybdenum and thiocyanate. Mohamed GG, Nour El-Dien FA, Khalil SM, et al. Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 65(5), 1221-6, (2006)

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Copper toxicosis in a dairy goat herd. Cornish J, Angelos J, Puschner B, et al. J. Am. Vet. Med. Assoc. 231(4), 586-9, (2007)

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Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics. Borgnino L, Pfaffen V, Depetris PJ, et al. Talanta 85(3), 1310-6, (2011)

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Negative staining across holes: application to fibril and tubular structures. Harris JR Micron 39(2), 168-76, (2008)

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Induction of acid phosphatase activity during germination of maize (Zea mays) seeds. Senna R, Simonin V, Silva-Neto MA, et al. Plant Physiol. Biochem. 44(7-9), 467-73, (2006)

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Spectrophotometric determination of trace amounts of phosphate in water and soil. Ganesh S, Khan F, Ahmed MK, et al. Water Sci. Technol. 66(12), 2653-8, (2012)

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Giardia duodenalis: biochemical characterization of an ecto-5'-nucleotidase activity. Russo-Abrahão T, Cosentino-Gomes D, Daflon-Yunes N, et al. Exp. Parasitol. 127(1), 66-71, (2011)

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Differential synaptic inputs to the cell body and proximal dendrites of preganglionic parasympathetic neurons in the rat conus medullaris. Persson S Neuroscience 157(3), 656-65, (2008)

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Selective cleavage of pepsin by molybdenum metallopeptidase. Yenjai S, Malaikaew P, Liwporncharoenvong T, et al. Biochem. Biophys. Res. Commun. 419(1), 126-9, (2012)

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Carotenogenesis in Haematococcus lacustris: role of protein tyrosine phosphatases. Park JK, Tran PN, Kim JD, et al. J. Microbiol. Biotechnol. 19(9), 918-21, (2009)

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Development and implication of methodology for aceclofenac in pure and pharmaceutical formulations by microwave assisted spectrophotometry. Mumtaz A, Sattar AA, Nazir R, et al. Pak. J. Pharm. Sci. 26(1), 169-73, (2013)

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Merck 14,533

Aldrich MSDS 1, 122:A / Corp MSDS 1 (1), 241:D / FT-IR 2 (3), 4769:C / FT-IR 1 (2), 1291:C / RegBook 1 (3), 3471:G / Sigma FT-IR 1 (2), 1029:D

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