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abs.
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absorption1M/289 nm, H2O cut-off
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|
Antion Traces
|
chloride (Cl-): ≤50 mg/kg
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|
Antion Traces
|
sulfate, sulfite (as SO42-): ≤500 mg/kg
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|
Antion Traces
|
sulfide (S2-): ≤1 mg/kg
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Cation Traces
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Al: ≤1 mg/kg
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|
Cation Traces
|
Ba: ≤1 mg/kg
|
|
Cation Traces
|
Bi: ≤1 mg/kg
|
|
Cation Traces
|
Ca: ≤5 mg/kg
|
|
Cation Traces
|
Cd: ≤1 mg/kg
|
|
Cation Traces
|
Co: ≤1 mg/kg
|
|
Cation Traces
|
Cr: ≤1 mg/kg
|
|
Cation Traces
|
Cu: ≤1 mg/kg
|
|
Cation Traces
|
Fe: ≤2 mg/kg
|
|
Cation Traces
|
K: ≤10 mg/kg
|
|
Cation Traces
|
Li: ≤1 mg/kg
|
|
Cation Traces
|
Mg: ≤2 mg/kg
|
|
Cation Traces
|
Mn: ≤1 mg/kg
|
|
Cation Traces
|
Mo: ≤1 mg/kg
|
|
Cation Traces
|
Ni: ≤1 mg/kg
|
|
Cation Traces
|
Pb: ≤1 mg/kg
|
|
Cation Traces
|
Sr: ≤1 mg/kg
|
|
Cation Traces
|
Zn: ≤1 mg/kg
|
|
Grade
|
for mass spectrometry
|
|
Impurities
|
insoluble matter, passes filter test
|
|
Impurities
|
≤0.002% total nitrogen (N)
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|
Linear Formula
|
Na2S2O3 · 5H2O
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|
Purity
|
≥99.5% (T)
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|
pH
|
6.0-7.5 (-25 °C1 M in H2O)
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|
Solubility
|
H2O: soluble1 M at 20 °C, clear, colorless
|
|
MSDS Link
|
Download
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|
Personal Protective Equipment
|
Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
|
|
German water hazard class
|
1
|