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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.

Price and Availability

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.



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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