Browsing by Author Barca, Elena

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