FIELD: chemistry.
SUBSTANCE: invention relates to method of obtaining 1,5-dinitronaphtaline, in which naphtaline is nitrated with nitric acid in absence of sulphuric acid at temperature from 30°C to 80°C, nitric acid having concentration from 72 wt %, to 87 wt %, obtained reaction mixture is filtered at temperature from 5°C to 20°C and obtained solid residue is washed with water, 1,5-dinitronaphtaline is isolated from washed residue by washing with acetone.
EFFECT: simplification of compound obtaining process.
7 cl, 1 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR NITRATION OF NAPHTHALENE | 1993 |
|
RU2079482C1 |
| METHOD FOR PRODUCING 1-NITRONAPHTHALENE | 2018 |
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| PROCESS FOR PREPARING 4-NITRO-N-METHYPHTHALIMIDE | 1992 |
|
RU2044726C1 |
| METHOD OF OBTAINING 1,8- AND 1,5-AMINOSULFOACIDS OF NAPHTHALENE | 0 |
|
SU1154271A1 |
| 0 |
|
SU57915A1 | |
| METHOD OF OBTAINING 1,5- AND 1,8-NAPHTYLAMINOSULFOACIDS | 0 |
|
SU1353776A1 |
| 0 |
|
SU235028A1 | |
| PROCESS FOR PREPARING MIXTURE OF 1-NAPHTHALAMINE 6(7)-SULFONIC ACIDS | 0 |
|
SU1089088A1 |
