МЕА Hexahydroxyplatinate (IV) Solution
Physical–chemical parameters of monoethanolamine hexahydroxoplatinate shall meet the requirements specified in Table 1.
Table 1.
| Parameter | Value | |
| Type I | Type II | |
| 1 Mass fraction of platinum, % | 10,00 – 20,00 | 10,00 – 20,00 |
| 2 Mass fraction of impurities in relation to platinum content, not more than, %: | ||
| arsenic | 0.001 | 0.005 |
| iron | 0.02 | 0.02 |
| gold | 0.005 | 0.005 |
| lead | 0.004 | 0.005 |
| silicon | 0.04 | 0.04 |
| copper | 0.0015 | 0.005 |
| ruthenium | 0.005 | 0.005 |
| calcium | 0.08 | 0.08 |
| silver | 0.005 | 0.005 |
| sodium | 0.3 | 0.3 |
| potassium | 0.035 | 0.3 |
| iridium | * | * |
| rhodium | * | * |
| palladium | * | * |
| zinc | ** | ** |
| antimony | ** | ** |
| bismuth | ** | ** |
| nickel | ** | ** |
| manganese | ** | ** |
| magnesium | ** | ** |
| tin | ** | ** |
| chromium | ** | ** |
| molybdenum | ** | ** |
| aluminium | ** | ** |
| 3 Mass fraction of chloride ion in relation to platinum content, not more than, %*** | 0.1 | 0.1 |
| * The total mass fraction of iridium, rhodium, palladium is not more than 0.0300% (in relation to platinum content). | ||
| ** The total mass fraction of zinc, antimony, bismuth, nickel, manganese, magnesium, tin, chromium, molybdenum, aluminium is not more than 0.0250% (in relation to platinum content). | ||
| *** Determination of the mass fraction of the chloride ion is carried out by calculation, in accordance with the procedure developed at the enterprise. | ||
| Note - additional requirements for the quality of monoethanolamine hexahydroxoplatinate can be established upon agreement with the manufacturer. | ||
The degree of extraction of hydrogen hexahydroxoplatinate (IV) (hereinafter referred to as hydrogen hexahydroxoplatinate) into the precipitate from monoethanolamine hexahydroxoplatinate shall not be less than 90.0%. Determination of this indicator is carried out in accordance with the procedure developed at the enterprise.
Monoethanolamine hexahydroxoplatinate shall not contain insoluble substances. In a solution of monoethanolamine hexahydroxoplatinate the presence of a precipitate in the form of soluble platinum salts is allowed.