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214485

Sigma-Aldrich

Sodium selenite

99%

Synonym(s):

Disodium selenite

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About This Item

Linear Formula:
Na2SeO3
CAS Number:
10102-18-8
Molecular Weight:
172.94
EC Number:
233-267-9
MDL number:
MFCD00003489
UNSPSC Code:
12352302
PubChem Substance ID:
57647927
NACRES:
NA.25
Assay:
99%
Pricing and availability is not currently available.

Quality Level

300

Assay

99%

mp

>350 °C (lit.)

SMILES string

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

InChI

1S/2Na.H2O3Se/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2

InChI key

BVTBRVFYZUCAKH-UHFFFAOYSA-L

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Pictograms

Skull and crossbonesEnvironment
GHS06,GHS09

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1

Supplementary Hazards

EUH031

Storage Class Code

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCT7508
MKCW0320
MKCV7566
MKCW3949
MKCW2785

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Tek N Lamichhane et al.
Molecular and cellular biology, 33(24), 4900-4908 (2013-10-16)
Human TRIT1 is a tRNA isopentenyltransferase (IPTase) homologue of Escherichia coli MiaA, Saccharomyces cerevisiae Mod5, Schizosaccharomyces pombe Tit1, and Caenorhabditis elegans GRO-1 that adds isopentenyl groups to adenosine 37 (i6A37) of substrate tRNAs. Prior studies indicate that i6A37 increases translation
Nikolce Gjorevski et al.
Scientific reports, 5, 11458-11458 (2015-07-15)
Collective cell migration drives tissue remodeling during development, wound repair, and metastatic invasion. The physical mechanisms by which cells move cohesively through dense three-dimensional (3D) extracellular matrix (ECM) remain incompletely understood. Here, we show directly that migration of multicellular cohorts
Tamara Winkler et al.
PloS one, 9(6), e98444-e98444 (2014-06-04)
Intervertebral discs (IVDs) are strong fibrocartilaginous joints that connect adjacent vertebrae of the spine. As discs age they become prone to failure, with neurological consequences that are often severe. Surgical repair of discs treats the result of the disease, which
Jianjun Hu et al.
Human molecular genetics, 23(17), 4663-4673 (2014-04-25)
Filamin B (FlnB) is an actin-binding protein thought to transduce signals from various membrane receptors and intracellular proteins onto the actin cytoskeleton. Formin1 (Fmn1) is an actin-nucleating protein, implicated in actin assembly and intracellular signaling. Human mutations in FLNB cause
P S P Gupta et al.
PloS one, 9(6), e100201-e100201 (2014-06-18)
Follicular development occurs in wave like patterns in monotocous species such as cattle and humans and is regulated by a complex interaction of gonadotropins with local intrafollicular regulatory molecules. To further elucidate potential mechanisms controlling dominant follicle selection, granulosa cell
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Questions

1–8 of 8 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. Is this product suitable for cell culture? What is the difference between this product and S5261? Are both suitable for the cell?

    1 answer

    1. Product 214485 has not been tested for cell culture applications. The suitability would need to be determined by the end-user. However, product S5261 is tested for cell culture applications.

      Please see the link below to review the S5261 product datasheet as well as a sample Certificates of Analysis for each item.

      S5261 Datasheet
      https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/245/224/s5261pis.pdf

      S5261 Certificate of Analysis
      https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/S5261-BULKSLCN8615.pdf

      214485 Certificate of Analysis
      https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/214485-BULKMKCT7508.pdf

      Helpful?

  4. If I am freezing my stock solutions of sodium selenite (in solution), how long are they stable for at -20°C / what is the shelf life at  -20°C once in solution?

    1 answer

    1. Unfortunately, stability studies at -20°C have not been conducted. Stock solutions are quite stable when stored refrigerated. Media supplements containing selenite, such as ITS (I3146), are stored at 2 - 8 °C and offer a 2 year shelf life. This should apply to the single component sodium selenite solution, as well. It is unknown if the freeze/thaw process may cause some precipitation. If the stock solution has already been frozen, thaw slowly overnight in the refrigerator to minimize this possibility.
      Please see the link below to review a sample Certificate of Analysis for the ITS supplement I3146.
      https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/I3146-5MLSLCN8789.pdf

      Helpful?

  5. How should Product 214485, Sodium selenite, be stored?

    1 answer

    1. Sodium selenite should be stored at room temperature in a dry place.  Sodium selenite is a moisture sensitive compound.

      Helpful?

  6. What is the Department of Transportation shipping information for this product?

    1 answer

    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

      Helpful?

  7. What is Product 214485, Sodium selenite, soluble in?

    1 answer

    1. Sodium selenite is soluble in water (50 mg/mL), yielding a clear to slightly hazy, colorless to very faint yellow solution.

      Helpful?

  8. How stable is Product 214485, Sodium selenite, in solution?

    1 answer

    1. Stock solutions of sodium selenite may be frozen.  Working aliquots are stable for 30 days at 2-8 °C.

      Helpful?

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