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S0251

Sigma-Aldrich

Sodium metaborate tetrahydrate

≥99%

Synonym(s):

Boric acid, sodium salt, tetrahydrate

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500 G
$45.80
1 KG
$71.50

About This Item

Linear Formula:
NaBO2 · 4H2O
CAS Number:
10555-76-7
Molecular Weight:
137.86
EC Number:
231-891-6
MDL number:
MFCD00149205
UNSPSC Code:
12352302
PubChem Substance ID:
57654596
NACRES:
NA.23
assay:
≥99%
form:
powder

$45.80

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Quality Level

200

assay

≥99%

form

powder

SMILES string

O.O.O.O.[Na+].[O-]B=O

InChI

1S/BO2.Na.4H2O/c2-1-3;;;;;/h;;4*1H2/q-1;+1;;;;

InChI key

JAKYJVJWXKRTSJ-UHFFFAOYSA-N

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General description

Sodium metaborate tetrahydrate is a colorless crystalline solid that serves as a Boron source in the synthesis of NaBH4. It finds applications in the textile industry, as well as in flame retardants and additives.

Application

Sodium metaborate tetrahydrate can be used:

  • As a precursor to prepare an environment-friendly NaBO2/PMS catalytic system for efficient removal of organic pollutants.
  • To enhance the flame-retardant properties of epoxy fireproof coatings.

Caution

Readily reacts with CO2 in air.

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Repr. 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000379797
0000365104
BCCL9616
0000365104
BCCL2902

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  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

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  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

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