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Key Documents

1.06521

Supelco

Sodium molybdate dihydrate

ACS, Reag. Ph Eur, for analysis EMSURE®

Synonym(s):

Sodium molybdate dihydrate

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About This Item

Empirical Formula (Hill Notation):
MoNa2O4 · 2H2O
CAS Number:
Molecular Weight:
241.95
MDL number:
UNSPSC Code:
12352302
EC Index Number:
231-551-7
NACRES:
NA.21
form:
crystals
solubility:
840 g/L
Pricing and availability is not currently available.

Quality Level

product line

EMSURE®

Assay

99.5-103.0% (precipitation titration)

form

crystals

potency

4233 mg/kg LD50, oral (Rat)
>2000 mg/kg LD50, skin (Rat)

pH

9-10 (20 °C, 840 g/L in H2O)

mp

687 °C (Elimination of water of crystallisation)

solubility

840 g/L

density

2.71 g/cm3 at 22 °C (for the dihydrate)

bulk density

1000‑1400 kg/m3

anion traces

chloride (Cl-): ≤0.005%
nitrate (NO3-): ≤0.005%
phosphate, silicate, arsenate (as PO43-): ≤0.001%
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.001%
NH4+: ≤0.001%
Pb: ≤0.001%

storage temp.

2-30°C

SMILES string

[Mo](=O)(=O)([O-])[O-].[Na+].[Na+]

InChI

1S/Mo.2Na.4O/q;2*+1;;;2*-1

InChI key

TVXXNOYZHKPKGW-UHFFFAOYSA-N

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Application


  • Fluorescent Molybdenum Disulfide Quantum Dots for Sensitive Detecting Curcumin in Food Samples through FRET Mechanism.: This study explores the use of sodium molybdate dihydrate in synthesizing molybdenum disulfide quantum dots. These dots are applied in a FRET-based sensor for detecting curcumin in food, illustrating a novel approach in food safety and quality monitoring (Wang S et al., 2024).


  • Synthesis and characterization of Anderson-Evans type polyoxometalates, antibacterial properties.: Sodium molybdate dihydrate is used in the synthesis of Anderson-Evans type polyoxometalates. This research focuses on their potential antibacterial applications, contributing to the development of new antimicrobial agents (Avci Özbek H, 2023).



  • Embellishing 2-D MoS(2) Nanosheets on Lotus Thread Devices for Enhanced Hydrophobicity and Antimicrobial Activity.: In this innovative study, sodium molybdate dihydrate is employed to enhance the properties of MoS(2) nanosheets, showcasing its utility in creating hydrophobic and antimicrobial surfaces, which can have various practical applications (Selvam GS et al., 2022).


Analysis Note

Assay (precipitative titration): 99.5 – 103.0 %
pH-value (5 %; water): 7.0 - 10.5
Chloride (Cl): ≤ 0.005 %
Nitrate (NO₃): ≤ 0.005 %
Phosphate, Arsenate, Silicate (as PO₄): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Fe (Iron): ≤ 0.001 %
NH₄ (Ammonium): ≤ 0.001 %
Pb (Lead): ≤ 0.001 %

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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

      Helpful?

  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

      Helpful?

  3. Does this material have BSE TSE, nitrosamine and melamine statements?, how can I ask for them? I don't see them on the webpage profile for this material.

    1 answer
    1. Product 1.06521 is Sodium molybdate dihydrate, labeled "for analysis" and "For R&D Use Only". A lot-specific certificate of origin (CofO) can be requested through a local Technical Service group. A risk assessment for BSE and TSE could then be performed based on the information provided in that CofO. Statements on nitrosamine and melamine would not be available for Product 1.06521.

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