Test method for mixed catalyst solution of cobalt acetate, manganese acetate and hydrobromic acid (1)

1 Scope

This standard specifies the cobalt acetate , manganese acetate , hydrobromic test method of mixing catalyst solution

This standard applies to cobalt acetate , manganese acetate , hydrobromic acid analysis of the mixed catalyst solution

2 Normative references

The clauses in the following documents are quoted as clauses of this standard.

GB/T 601 Preparation of Standard Titration Solution for Chemical Reagents

GB/T 602 Preparation of standard solutions for chemical reagent impurity determination (GB/T602-2002, neq ISO 6353-1: 1982, Reagents for chemical analysis Partl: General test methods)

Preparation of preparations and products used in GR/T 603 chemical reagent test methods (GR/T 603-2002, ned ISO 6353-1: 1982, Reagents for chemical analysis---Part 1: General test methods)

GB/T 621 chemical reagent hydrobromic acid

GB/T 6682 Analytical laboratory water specifications and test methods (GB/T6682-1992.

GB/T 8170 Numerical Rounding Rules

HG/T 2032 industrial cobalt acetate

HG/T 2034 industrial manganese acetate

3 Test method

3.

Some test procedures specified by the test method may lead to dangerous situations

3.

Unless otherwise specified, only reagents confirmed to be analytically pure and grade 3 water specified in GB/T6682, standard titration baths used in the analysis, standard solutions for impurity determination, preparations and products are used in the analysis.

3.

Take 100mL laboratory sample in a colorimetric tube and visually inspect it horizontally under room temperature, natural light or fluorescent lamp

3.

3.

In the neutral pyrophosphate solution, the manganese ions (Mn ²⁺ ) and permanganate ion (of MnO _.

4Mn ²⁺ + of MnO _.

Use a potentiometric titrator to titrate with potassium permanganate standard solution.

3.

3.
4.
2.
1 Sodium pyrophosphate (Na ₄ P ₂ O ₇ ·10H ₂ O) solution: saturated solution at room temperature
.

3.
4.
2.
2 Hydrochloric acid solution: 1+5
.

3.
4.
2.
3 Standard titration bath solution of potassium permanganate : c(1/5KMnO ₄ )=0.
1mol/L
.

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