Sulphuric acid battery gradeGOST 667-73
Specifications
|
indicator |
Extra Class |
Class I |
|---|---|---|
|
Mass for monohydrate (H2SO4),% |
92-94 |
92-94 |
|
Mass fraction of iron (Fe),%, not more |
0,005 |
0,01 |
|
Mass fraction of residue after calcination , %, not more |
0,02 |
0,03 |
|
Mass fraction of nitrogen oxides (N2O3),%, not more |
0,00003 |
0,0001 |
|
Arsenic (As),%, not more |
0,00005 |
0,00008 |
|
Mass fraction of chlorides (Cl),%, not more |
0,0002 |
0,0003 |
|
Mass fraction of manganese (Mn),%, not more |
0,00005 |
0,0001 |
|
Mass fraction of the sum of heavy metals in terms of lead (Pb),%, not more |
0,01 |
0,01 |
|
The mass ratio of copper (Cu),%, no more than |
0,0005 |
0,0005 |
|
Mass fraction of substances , reducing KMnO4, cm 3 solution (1/5 KMnO4) = 0,01 mol / dm3 , not more |
4,5 |
7 |
|
Transparency |
appropriate |
appropriate |
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