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Merck

11625

Sigma-Aldrich

Natriumtetraborat Decahydrat

puriss., meets analytical specification of Ph. Eur., BP, NF, 99.0-103.0%

Synonym(e):

Borax Decahydrat, Natriumborat Decahydrat

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About This Item

Lineare Formel:
Na2B4O7 · 10H2O
CAS-Nummer:
Molekulargewicht:
381.37
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352302
PubChem Substanz-ID:
NACRES:
NA.22

Agentur

Ph. Eur.

Qualität

puriss.
meets analytical specification of Ph. Eur., BP, NF

Assay

99.0-103.0%

Form

crystalline

Verunreinigungen

carbonate and Bicarbonate, complies
organic volatile impurities, complies
residual solvents, complies
≤0.001% ammonium (NH4)
≤0.002% heavy metals (as Pb)

pH-Wert

9.0-9.6 (20 °C, 5%)

Dichte

1.73 g/mL at 25 °C (lit.)

Anionenspuren

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

Kationenspuren

As: ≤3 mg/kg
Ca: ≤100 mg/kg
Fe: ≤20 mg/kg
Mg: ≤10 mg/kg

Eignung

complies for appearance of solution

Lagertemp.

room temp

SMILES String

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

InChI

1S/B4O7.2Na.10H2O/c5-1-7-3-9-2(6)10-4(8-1)11-3;;;;;;;;;;;;/h;;;10*1H2/q-2;2*+1;;;;;;;;;;

InChIKey

CDMADVZSLOHIFP-UHFFFAOYSA-N

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Rechtliche Hinweise

Piktogramme

Health hazardExclamation mark

Signalwort

Danger

H-Sätze

Gefahreneinstufungen

Eye Irrit. 2 - Repr. 1B

Lagerklassenschlüssel

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 1

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable


Analysenzertifikate (COA)

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Qingzhou Cui et al.
The Analyst, 134(5), 875-880 (2009-04-22)
We developed a photonic crystal sensing method for diol containing species such as carbohydrates based on a poly(vinyl alcohol) (PVA) hydrogel containing an embedded crystalline colloidal array (CCA). The polymerized CCA (PCCA) diffracts visible light. We show that in the
Marco Frasconi et al.
Langmuir : the ACS journal of surfaces and colloids, 25(18), 11097-11104 (2009-08-22)
A highly stable biological film was prepared by casting an aqueous dispersion of protein and composite hydrogel obtained from the polysaccharide Scleroglucan (Sclg) and borax as a cross-linking agent. Heme proteins, such as hemoglobin (Hb), myoglobin (Mb), and horseradish peroxidase
C Cencetti et al.
Carbohydrate polymers, 90(3), 1362-1370 (2012-09-04)
Silver-loaded dressings are designed to provide the same antimicrobial activity of topical silver, with the advantages of a sustained silver release and a reduced number of dressing changes. Moreover, such type of dressing must provide a moist environment, avoiding fiber
Eunice F S Vieira et al.
Biomacromolecules, 9(4), 1195-1199 (2008-03-19)
Oxidized alginate (ADA) and oxidized alginate blended with chitosan (ADA-Chit) were prepared in the presence of borax and CaCl 2, and their interactions with an antifolate drug, pyrimethamine (PYR), have been investigated. Tablets with a mean diameter of 1.2 +/-
Gianfranco Bocchinfuso et al.
The journal of physical chemistry. B, 114(41), 13059-13068 (2010-09-25)
Guar gum is a galactomannan that assumes a very flexible conformation in solution, while Scleroglucan is a very rigid polysaccharide that dissolves in water as triple helices. Both polymers can form gels in the presence of borax. Despite their structural

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