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11625

Sigma-Aldrich

Sodium tetraborate decahydrate

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

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Synonym(s):
Borax decahydrate, Sodium borate decahydrate
Linear Formula:
Na2B4O7 · 10H2O
CAS Number:
Molecular Weight:
381.37
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

agency

Ph. Eur.

Quality Level

grade

puriss.

assay

99.0-103.0%

form

crystalline

quality

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

impurities

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

pH

9.0-9.6 (20 °C, 5%)

density

1.73 g/mL at 25 °C (lit.)

anion traces

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

cation traces

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

suitability

complies for appearance of solution

storage temp.

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;;;;;;;;;;

InChI key

CDMADVZSLOHIFP-UHFFFAOYSA-N

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1 of 4

This Item
B9876SX0355S9640
vibrant-m

11625

Sodium tetraborate decahydrate

Essential Grade
vibrant-m

B9876

Sodium tetraborate decahydrate

-
vibrant-m

SX0355

Sodium Borate, Decahydrate

-
vibrant-m

S9640

Sodium tetraborate decahydrate

-
Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

assay

99.0-103.0%

assay

≥99.5%

assay

99.5-105.0%

assay

≥99.5%

grade

puriss.

grade

-

grade

-

grade

-

density

1.73 g/mL at 25 °C (lit.)

density

1.73 g/mL at 25 °C (lit.)

density

-

density

1.73 g/mL at 25 °C (lit.)

pH

9.0-9.6 (20 °C, 5%)

pH

9.2 (10 g/L)

pH

9.2 (20 °C, 47 g/L in H2O)

pH

9.15-9.20 (25 °C, 0.01 M in solution)

Legal Information

pictograms

Exclamation markHealth hazard

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


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