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72069 Sigma

Sodium tungstate dihydrate

BioUltra, ≥99.0% (T)

Synonym: Tungstic acid sodium salt dihydrate

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Properties

InChI Key   WPZFLQRLSGVIAA-UHFFFAOYSA-N
product line   BioUltra
assay   ≥99.0% (T)
impurities   insoluble matter, passes filter test
  ≤0.001% total nitrogen (N)
  ≤0.05% free alkali (as NaOH)
pH   9.5-11.5 (25 °C, 1 M in H2O)
mp   698 °C(lit.)
solubility   H2O: soluble1 M at 20 °C, clear, colorless
anion traces   chloride (Cl-): ≤50 mg/kg
  sulfate (SO42-): ≤100 mg/kg
cation traces   As: ≤0.5 mg/kg
  Ca: ≤10 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: ≤10 mg/kg
  Zn: ≤5 mg/kg
λ   1 M in H2O
UV absorption   λ: 260 nm Amax: ≤0.120
  λ: 280 nm Amax: ≤0.035

Description

Other Notes

Stain in electron microscopy (nucleic acids, certain glycoproteins); Protein precipitant.

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Laboratory Gloves
Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
1
RTECS 
YO7900000
Protocols & Articles
Peer-Reviewed Papers
15

References

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