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B3545

Sigma-Aldrich

Sodium tetraborate decahydrate

BioXtra, ≥99.5%

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.21

product line

BioXtra

Quality Level

assay

≥99.5%

form

powder

impurities

≤0.001% Phosphorus (P)
≤0.1% Insoluble matter

pH

9.2 (10 g/L)

solubility

H2O: 0.1 M, clear, colorless

density

1.73 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤0.05%
sulfate (SO42-): ≤0.05%

cation traces

Al: ≤0.0005%
Ca: ≤0.01%
Cu: ≤0.0005%
Fe: ≤0.001%
K: ≤0.005%
Mg: ≤0.0005%
NH4+: ≤0.05%
Pb: ≤0.001%
Zn: ≤0.0005%

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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Application

Sodium tetraborate decahydrate has been used:
  • as a buffer component in biotinylation assay.
[34]
  • in preparation of methylene blue solution for histological staining.
  • [35]
  • as a component of trace metal solution for medium supplementation.
  • [36]

    Packaging

    500 g in poly bottle
    1 kg in poly bottle

    Biochem/physiol Actions

    Sodium tetraborate decahydrate also called borax.[31] Guar gum based gels crosslinked by borax are effective for wastewater treatment.[32] Borax is used in the preparation of detergents and cosmetics. Borax elicits toxicity in the brain especially in aquatic organisms resulting in edema and congestion.[33]

    Legal Information

    Pictograms

    Exclamation markHealth hazard

    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

    Certificate of Analysis

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    Certificate of Origin

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