di-Sodium tetraborate, anhydrous ~99%, white crystals

Supplier: MP Biomedicals
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Synonyms: BoraxSodium tetraborate

ICNA0219030990EA 81.9 GBP
ICNA0219030990 ICNA0219030991 ICNA0219030980
di-Sodium tetraborate, anhydrous ~99%, white crystals
di-Sodium tetraborate

Borax anhydrous typically used as a buffer component.


The Merck Index lists other uses as: used in the manufacturing of glazes and enamels, a component in tanning agents; curing and preserving skins, a agent used in cleaning compounds, used to artificially age wood, as a preservative, either alone or with other antiseptics against wood fungus, used in fireproofing fabrics and wood, used as antiseptic, used in detergents, an astringent for mucous membranes.


Anhydrous borax is slowly soluble in water. Insoluble in ethanol.

Formula: Na₂B₄O₇
MW: 201.22 g/mol
Melting Pt: 742.5 °C (lit.)
MDL Number: MFCD00081185
CAS Number: 1330-43-4

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Specification Test Results

Identity Test Passes
Purity ~99%
Moisture Content < 1,0%
Iron as Fe <0,004%
sulphate as SO4 <0,05
B2O3 68 to 70%
Na2O 30 to 40%

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