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04283

Sigma-Aldrich

Sodium phosphite dibasic pentahydrate

≥98%

Synonym(s):

di-Sodium hydrogen phosphite

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About This Item

Linear Formula:
Na2HPO3 · 5H2O
CAS Number:
13517-23-2
Molecular Weight:
216.04
MDL number:
MFCD00150354
UNSPSC Code:
12352302
PubChem Substance ID:
57646749
NACRES:
NA.22
Assay:
≥98%
form:
crystals
Pricing and availability is not currently available.

Quality Level

100

Assay

≥98%

form

crystals

impurities

≤0.001% heavy metals (as Pb)

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Fe: ≤10 mg/kg

SMILES string

O.O.O.O.O.[Na+].[Na+].OP([O-])[O-]

InChI

1S/2Na.HO3P.5H2O/c;;1-4(2)3;;;;;/h;;1H;5*1H2/q2*+1;-2;;;;;

InChI key

FBKBMXXJECMLCQ-UHFFFAOYSA-N

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Application

Sodium phosphite dibasic pentahydrate can be used as an electron donor for the enantioselective transformation of prochiral sulfides to the corresponding optically active sulfoxides catalyzed by Thermocrispum municipale cyclohexanone monooxygenase (TmCHMO) enzyme.[1]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

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
WXBF5187V
BCCK8923
WXBF4203V
BCCH9818
BCCF8163

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Enantioselective sulfoxidations employing the thermostable cyclohexanone monooxygenase from Thermocrispum municipale.
De G G and Franconetti A
Enzyme and Microbial Technology, 113, 24-28 (2018)

Questions

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  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

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  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

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