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1.02529 Supelco

Cobalt(II) acetate tetrahydrate

for analysis EMSURE® ACS

Synonym: Cobalt(II) acetate tetrahydrate

  • CAS Number 6147-53-1

  • Linear Formula (CH3COO)2Co · 4 H2O

  • Molecular Weight 249.08

  •  MDL number MFCD00149569

  •  EC Index Number 200-755-8

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Properties

Quality Level   300
grade   ACS reagent
assay   99.0-101.0% (complexometric)
form   solid
pH   7.2 (20 °C, 50 g/L in H2O)
mp   140 °C (Elimination of water of crystallisation)
solubility   348 g/L
density   1.70 g/cm3 at 20 °C
bulk density   850 kg/m3
anion traces   chloride (Cl-): ≤0.001%
  nitrate (NO3-): ≤0.01%
  sulfate (SO42-): ≤0.005%
cation traces   Ca: ≤ 0.005%
  Cu: ≤ 0.0005%
  Fe: ≤ 0.001%
  K: ≤ 0.01%
  Mg: ≤ 0.005%
  N: ≤ 0.002%
  Na: ≤ 0.01%
  Ni: ≤ 0.02%
  Pb: ≤ 0.0005%
  Zn: ≤ 0.001%
InChI   1S/2C2H4O2.Co.4H2O/c2*1-2(3)4;;;;;/h2*1H3,(H,3,4);;4*1H2/q;;+2;;;;/p-2
InChI key   ZBYYWKJVSFHYJL-UHFFFAOYSA-L
storage conditions   Store at +5°C to +30°C.

Description

Analysis Note

Assay (complexometric): 99.0 - 101.0 %
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water): 6.0 - 8.0
Chloride (Cl): ≤ 0.001 %
Nitrate (NO₃): ≤ 0.01 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.002 %
Ca (Calcium): ≤ 0.005 %
Cu (Copper): ≤ 0.0005 %
Fe (Iron): ≤ 0.001 %
K (Potassium): ≤ 0.01 %
Mg (Magnesium): ≤ 0.005 %
Na (Sodium): ≤ 0.01 %
Ni (Nickel): ≤ 0.02 %
Pb (Lead): ≤ 0.0005 %
Zn (Zinc): ≤ 0.001 %

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Protocols & Articles

Articles

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