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Sigma-Aldrich

Natriumtetraborat

BioUltra, anhydrous, ≥99%

Synonym(e):

Borax

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About This Item

Lineare Formel:
Na2B4O7
CAS-Nummer:
1330-43-4
Molekulargewicht:
201.22
EG-Nummer:
215-540-4
MDL-Nummer:
MFCD00081185
UNSPSC-Code:
12352302
PubChem Substanz-ID:
329763686
NACRES:
NA.25

Qualitätsniveau

200

Produktlinie

BioUltra

Assay

≥99%

Form

crystals

Verunreinigungen

insoluble matter, passes filter test

Verlust

≤1% loss on drying, 20 °C (HV)

pH-Wert

9.0-10.5 (25 °C, 0.1 M in H2O)

Löslichkeit

H2O: 0.1 M at 20 °C, clear, colorless

Anionenspuren

chloride (Cl-): ≤10 mg/kg
phosphate (PO43-): ≤20 mg/kg
sulfate (SO42-): ≤50 mg/kg

Kationenspuren

Al: ≤5 mg/kg
As: ≤0.5 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤50 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

0.1 M in H2O

UV-Absorption

λ: 260 nm Amax: ≤0.020
λ: 280 nm Amax: ≤0.015

SMILES String

[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

InChIKey

UQGFMSUEHSUPRD-UHFFFAOYSA-N

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Rechtliche Hinweise

Piktogramme

Health hazardExclamation mark
GHS08,GHS07

Signalwort

Danger

H-Sätze

H319,H360FD

Gefahreneinstufungen

Eye Irrit. 2 - Repr. 1B

Lagerklassenschlüssel

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

WGK

WGK 1

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

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

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Analysenzertifikate (COA)

Lot/Batch Number
BCCG6523
BCCD7933
BCBW8475
BCBV3707
BCBT6698

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Sigma-Aldrich

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