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221732

Sigma-Aldrich

Sodium tetraborate

99%

Synonyme(s) :

Borax, fused

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100 G
39,70 €
500 G
64,00 €
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124,00 €

39,70 €

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100 G
39,70 €
500 G
64,00 €
2.5 KG
124,00 €

About This Item

Formule linéaire :
Na2B4O7
Numéro CAS:
1330-43-4
Poids moléculaire :
201.22
Numéro CE :
215-540-4
Numéro MDL:
MFCD00081185
Code UNSPSC :
12352302
ID de substance PubChem :
24853258
Nomenclature NACRES :
NA.22
Essai:
99%
Forme:
solid

39,70 €

En stockDétails

Devis pour commande en gros

Agence

suitable for SM 4500 - NH3

Niveau de qualité

200

Essai

99%

Forme

solid

Pf

741 °C (lit.)

Densité

2.367 g/mL at 25 °C (lit.)

Chaîne SMILES 

[Na+].[Na+].[O-]B1Ob2ob([O-])ob(O1)o2

InChI

1S/B4O7.2Na/c5-1-7-3-9-2(6)10-4(8-1)11-3;;/q-2;2*+1

Clé InChI

UQGFMSUEHSUPRD-UHFFFAOYSA-N

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Catégories apparentées

Application

Sodium tetraborate (Na2B4O7) can be used as a co-catalyst for the oxidation of alcohols to corresponding carbonyl compounds in greener non-chlorinated solvents in the presence of TEMPO/NaOCl.[1] It is also used as a structure-directing agent as well as a catalyst in the preparation of carbon aerogels using glucose as the carbon precursor.[2]

Informations légales

Pictogrammes

Health hazardExclamation mark
GHS08,GHS07

Mention d'avertissement

Danger

Mentions de danger

H319,H360FD

Classification des risques

Eye Irrit. 2 - Repr. 1B

Code de la classe de stockage

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

Listes réglementaires

Les listes réglementaires sont principalement fournies pour les produits chimiques. Seules des informations limitées peuvent être fournies ici pour les produits non chimiques. L'absence d'indication signifie qu'aucun des composants n'est répertorié. Il incombe à l'utilisateur de s'assurer de l'utilisation sûre et légale du produit.

EU REACH SVHC Candidate List

CAS No.

EU REACH Annex XVII (Restriction List)

CAS No.

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Certificats d'analyse (COA)

Lot/Batch Number
BCCM5965
BCCK2268
BCCH6343
BCCG2816
BCCD1024

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Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

Zichen Zhao et al.
Foods (Basel, Switzerland), 10(7) (2021-08-08)
UV-B illumination facilitates aggregation of alpha-lactalbumin (α-LA) by intramolecular disulfide bond cleavage followed by intermolecular thiol-disulfide exchange reactions. However, long term exposure to UV-B illumination may induce undesired oxidative modifications of amino acid residues in the protein. The purpose of
Borax-Mediated Formation of Carbon Aerogels from Glucose
Fellinger T-P, et al.
Advances in Functional Materials, 22(15), 3254-3260 (2012)
Towards greener solvents for the bleach oxidation of alcohols catalysed by stable N-oxy radicals
Janssen MHA, et al.
Green Chemistry, 13(4), 905-912 (2011)
Caio A C G Brunharo et al.
Journal of agricultural and food chemistry, 67(31), 8431-8440 (2019-05-09)
Glufosinate-resistant Lolium perenne L. spp. multiflorum biotypes from Oregon exhibited resistance levels up to 2.8-fold the field rate. One resistant biotype (MG) had an amino acid substitution in glutamine synthetase 2 (GS2), whereas the other (OR) exhibited the wild-type genotype.
Siyu Liu et al.
ACS nano, 14(11), 15936-15943 (2020-11-13)
Flat, membrane-like materials made of graphene oxide (GO) nanoflakes have extraordinary mechanical properties including high stiffness, high strength, and low weight. However, the forming of complex nonplanar structures from flat GO membranes is difficult because of the intrinsic brittleness of
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Contenu apparenté

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Questions

1–7 sur 7 questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 réponse

    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 réponse

    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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  3. Is Product 221732,  Sodium tetraborate, a fused borax?

    1 réponse

    1. Yes, Product No. 221732 is a fused borax.

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  4. Do we offer a more water soluble Sodium tetraborate?

    1 réponse

    1. Product No. S9640, Sodium tetraborate decahydrate, is soluble in water at 62 mg/mL or 160 mM. If you use hot water you can get a 4.4 M solution.

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  5. Is Product 221732, Sodium tetraborate, soluble in water?

    1 réponse

    1. Per the chemicals encyclopedia published by the Royal Society of Chemistry this product is slow to dissolve in water and may require heat at 40°C and stirring. We have tested the solubility at 33 mg/mL water.

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  6. What is the appearance of Product 221732,  Sodium tetraborate?

    1 réponse

    1. This product is a powder. It may be either crystalline or granular.

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

    1 réponse

    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.

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