di-Sodium tétraborate décahydraté 99.5-105.0%, poudre cristalline blanche ACS
Marques : MP BiomedicalsTotal Evaluation: 0
Moyenne des Notes : 0.0 sur 5
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Danger
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Synonyme(s):
di-Sodium tétraborate à 10 molécules d'eau
Sodium borate decahydrate is a mineral, and a salt of boric acid. The term borax is used for a number of closely related minerals or chemical compounds that differ in their crystal water content, but usually refers to the decahydrate.
Applications: Sodium borate is used in biochemical and chemical laboratories to make buffers, e.g. for gel electrophoresis of DNA, such as TBE(Tris/Borate/EDTA) or SB(Sodium borate) buffer or BBS (borate buffered saline) in coating procedures. As a micronutrient fertilizer to correct boron-deficient soils. To clean the brain cavity of a skull for mounting.
1 g dissolves in 16 M water, 0,6 ml boiling water, 1 ml glyceral; insoluble in alcohol.
Formule:
Na₂B₄O₇·10H₂O Poids moléculaire: 381.37 g/mol Point d'ébullition: 320 Point de fusion: 75 |
Numéro MDL:
MFCD00149193 Numéro CAS: 1303-96-4 Indice Merck: 13,08662 |
Résultats des tests de spécification
Assay | 99,5 - 105,0% |
Heavy Metals | ≤0,001%(as Pb) |
Insoluble Matter | ≤0,005% |
pH | 9,15 - 9,20 (0,01M aq soln) |
Chloride (Cl) | ≤0,001% |
Sulphate (SO4) | ≤0,005% |
Phosphate (PO4) | ≤0,001% |
Calcium (Ca) | ≤0,005% |
Iron (Fe) | ≤5 ppm |
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