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71997 Sigma-Aldrich

Borax Anhydrous

BioUltra, anhydrous, ≥99%

Synonym: Sodium tetraborate

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Properties

InChI Key   UQGFMSUEHSUPRD-UHFFFAOYSA-N
product line   BioUltra
assay   ≥99%
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: soluble0.1 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

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Laboratory Gloves
Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
NONH for all modes of transport
WGK Germany 
1
RTECS 
ED4588000
Protocols & Articles
Peer-Reviewed Papers
15

References

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