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Key Documents

B3545

Sigma-Aldrich

Sodium tetraborate decahydrate

BioXtra, ≥99.5%

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
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.
  • in preparation of methylene blue solution for histological staining.
  • as a component of trace metal solution for medium supplementation.

Biochem/physiol Actions

Sodium tetraborate decahydrate also called borax. Guar gum based gels crosslinked by borax are effective for wastewater treatment. 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.

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

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Differentiation of adipose stem cells seeded towards annulus fibrosus cells on a designed poly (trimethylene carbonate) scaffold prepared by stereolithography
Blanquer SBG, et al.
Journal of Tissue Engineering and Regenerative Medicine, 11(10), 2752-2762 (2017)
Preparation of glycoconjugates from unprotected carbohydrates for protein-binding studies
Hjuler CT, et al.
Nature Protocols, 12(11), 2411-2411 (2017)
Borax cross-linked guar gum hydrogels as potential adsorbents for water purification
Thombare N, et al.
Carbohydrate Polymers, 168, 274-281 (2017)
Growth and properties of sodium tetraborate decahydrate single crystals
Goel N, et al.
Materials Research Bulletin, 48(4), 1632-1636 (2013)
Antimicrobial agents, triclosan, chloroxylenol, methylisothiazolinone and borax, used in cleaning had genotoxic and histopathologic effects on rainbow trout
Capkin E, et al.
Chemosphere, 182, 720-729 (2017)

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