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72000

Sigma-Aldrich

Sodium tetraborate decahydrate

puriss. p.a., ACS reagent, crystallized, ≥99.5% (T)

Synonym(s):

Borax decahydrate, Sodium borate decahydrate

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About This Item

Linear Formula:
Na2B4O7 · 10H2O
CAS Number:
Molecular Weight:
381.37
EC Number:
MDL number:
UNSPSC Code:
12352300
NACRES:
NA.21

grade

ACS reagent
puriss. p.a.

Assay

≥99.5% (T)

quality

crystallized

pH

9.15-9.20 (25 °C, 0.01 M in H2O)

density

1.73 g/mL at 25 °C (lit.)

anion traces

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

cation traces

As: ≤0.5 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
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

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;;;;;;;;;;

InChI key

CDMADVZSLOHIFP-UHFFFAOYSA-N

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Legal Information

Pictograms

Health hazardExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Repr. 1B

Storage Class Code

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

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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A partial modification of the carbazole method of Bitter and Muir for quantitation of hexuronic acids.
M Kosakai et al.
Analytical biochemistry, 93(2), 295-298 (1979-03-01)
The analysis of aminoglycoside antibiotics by capillary electrophoresis.
Flurer CL.
Journal of Pharmaceutical and Biomedical Analysis, 13(7), 809-816 (1995)
Ana Juan-García et al.
Journal of chromatography. A, 1073(1-2), 229-236 (2005-05-25)
Two procedures based on solid-phase extraction (SPE) and stir-bar sorptive extraction (SBSE) in combination with micellar electrokinetic chromatography (MEKC)--diode array detection (DAD) were compared for the simultaneous extraction of acrinathrin, bitertanol, cyproconazole, fludioxonil, flutriafol, myclobutanil, pyriproxyfen, and tebuconazole in lettuce
Crystal structures of sodium sulfate decahydrate (Glauber's salt) and sodium tetraborate decahydrate (borax). Redetermination by neutron diffraction.
Levy HA and Lisensky GC.
Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials, 34(12), 3502-3510 (1978)
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

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