In 2021, (R&D Center) «AhmadullinS», in accordance with TU 72.19.14-004-44178696-2021 and RPB No. 44178696.20.72846, began the production of brand oleum (chemically pure, pure for analysis, pure).
Oleum is a compound of sulfuric anhydrite and sulfuric acid, widely used in industry, including for the production of sulfuric acid itself, as well as caprolactam, which is the basis for the manufacture of certain types of plastics, fibers, and packaging films.
Oleum is used in industry for the sulfonation of aromatic compounds. In organic chemistry, a water-removing or oxidizing agent is used.
Oleum (TU 72.19.14-004-44178696-2021)
|Name of indicator||chemically pure||pure for analysis||pure|
|1. Appearance||Oleum must be homogeneous, free of mechanical impurities|
|2. Mass fraction of free sulfur trioxide (SO3), %||62-65||61-65||61-65|
|3. Mass fraction of ammonium (NH4), |
%, no more than
|4. Mass fraction after calcination, %, no more||0.01||0.002||0.005|
|5. Mass fraction of chlorides, % no more than||0.0001||0.0002||0.0005|
|6. Mass fraction of nitrates, % no more than||0.0001||0.0001||0.0005|
|7. Mass fraction of heavy metals (in terms of Pb), |
% no more than
|8. Mass fraction of iron, % no more than||0.00005||0.0001||0.0003|
|9. Mass fraction of arsenic, % no more than||0.000003||0.000003||0.00001|
|10. Mass fraction of substances reducing KMnO4, |
% no more than (in terms of (SO2))
|0.0028||not normal||not normal|