Browsing by Author Barca, Elena
Showing results 1 to 3 of 3
Issue Date | Title | Author(s) |
---|---|---|
28-Feb-1984 | Highly pure para-toluene-sulphonic acid mono:hydrate prepn. from sulphuric acid contg. para-toluene-sulphonic acid by mixing with water, cooling, filtration and crystallisation steps | Dorobantu, Maria; Zlota, Arie; Barca, Elena; Anistoroaie, Viorica; Cosaveanu, A.; Dumitrescu, I. |
30-Sep-1984 | Highly pure para-toluene-sulphonic acid prepn. by sulphonating toluene with conc. sulphuric acid at atmos. pressure | Dorobantu, Maria; Zlota, Arie; Barca, Elena; Anistoroaie, Viorica |
30-Nov-1982 | Para-toluene-sulphonic acid prepn. by treating di:para-tolyl-tri:chloroethane prodn. residue, contg. sulphuric acid and toluene-sulphonic acid, with toluene | Dorobantu, Maria; Zlota, Arie; Barca, Elena |