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71997

Sigma-Aldrich

Borax Anhydrous

BioUltra, anhydrous, ≥99%

Sinónimos:

Sodium tetraborate

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About This Item

Fórmula lineal:
Na2B4O7
Número de CAS:
1330-43-4
Peso molecular:
201.22
EC Number:
215-540-4
MDL number:
MFCD00081185
UNSPSC Code:
12352302
PubChem Substance ID:
329763686
NACRES:
NA.25

Quality Level

200

product line

BioUltra

assay

≥99%

form

crystals

impurities

insoluble matter, passes filter test

loss

≤1% loss on drying, 20 °C (HV)

pH

9.0-10.5 (25 °C, 0.1 M in H2O)

solubility

H2O: 0.1 M at 20 °C, clear, colorless

anion traces

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

cation traces

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

InChI key

UQGFMSUEHSUPRD-UHFFFAOYSA-N

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Legal Information

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Danger

Hazard Classifications

Eye Irrit. 2 - Repr. 1B

Storage Class

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

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

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Certificados de análisis (COA)

Lot/Batch Number
BCCL6820
BCCJ1338
BCCG6523
BCCD7933
BCBW8475

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Tatiana S Fukuji et al.
Journal of pharmaceutical and biomedical analysis, 51(2), 430-438 (2009-06-24)
In this work, the separation of nine phenolic acids (benzoic, caffeic, chlorogenic, p-coumaric, ferulic, gallic, protocatechuic, syringic, and vanillic acid) was approached by a 3(2) factorial design in electrolytes consisting of sodium tetraborate buffer (STB) in the concentration range of
Danyue Zhao et al.
Electrophoresis, 33(15), 2424-2432 (2012-08-14)
An efficient and sensitive method for the separation and determination of three essential amino acids and three B vitamins by CE-LIF with a simultaneous derivatization procedure was developed. The conditions for derivatization and separation of these micronutrients were investigated. FITC
Shao-Qiang Hu et al.
Electrophoresis, 34(2), 260-268 (2012-11-20)
Based on the investigation of the effect of microemulsion charge on the chiral separation, a new chiral separation method with MEEKC employing neutral microemulsion was established. The method used a microemulsion containing 3.0% (w/v) neutral surfactant Tween 20 and 0.8%
Ho-Yong Kim et al.
Environmental toxicology and chemistry, 30(6), 1297-1305 (2011-03-08)
Okara, an organic waste product obtained from soy milk production, was used with copper chloride or sodium borate to formulate new wood preservatives as a substitute for expensive wood preservatives, such as copper-azole-based preservatives and ammoniacal copper quaternary. Before formulating
Jamshed Iqbal et al.
Journal of chromatography. A, 1218(29), 4764-4771 (2011-06-15)
A simple, efficient, and highly sensitive in-line CE method was developed for the characterization and for inhibition studies of the nucleoside-metabolizing enzymes purine nucleoside phosphorylase (PNP) and adenosine deaminase (ADA) present in membrane preparations of human 1539 melanoma cells. After
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