SU61265A1 - Method for preparing 1,8-naphtsul-2,4-disulfonic acids - Google Patents
Method for preparing 1,8-naphtsul-2,4-disulfonic acidsInfo
- Publication number
- SU61265A1 SU61265A1 SU33175A SU33175A SU61265A1 SU 61265 A1 SU61265 A1 SU 61265A1 SU 33175 A SU33175 A SU 33175A SU 33175 A SU33175 A SU 33175A SU 61265 A1 SU61265 A1 SU 61265A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- naphtsul
- preparing
- disulfonic acids
- oleum
- acid
- Prior art date
Links
- 239000002253 acid Substances 0.000 title description 8
- 238000000034 method Methods 0.000 title description 3
- 150000007513 acids Chemical class 0.000 title 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 230000001180 sulfating effect Effects 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
1,8-нафтсультам-2,4-дисульфокислота может быть получена путем сульфировани 1,8-нафтсультама. .8-нафтиламиисульфокислоты или 1,4,8-нафтиламиндисульфокислоты.1,8-naphthasul-2,4-disulfonic acid can be obtained by sulphonating 1,8-naphtsultam. .8-naphthylamine sulphonic acid or 1,4,8-naphthylamine disulfonic acid.
По предлагаемому способу 1,8-нафтсультам-2,4-дисульфокислоту получают путем сульфировани 1.8-1 афт11ламинсульфокислоты сначала смесью 25-35%-пого олеума с безводным сульфатом натри , а затем высокопроцентным , например, 65% олеумом.In the proposed method, 1,8-naphtsultam-2,4-disulfonic acid is obtained by sulfating 1.8-1 aftIlaminesulfonic acid first with a mixture of 25-35% oleum with anhydrous sodium sulfate, and then with a high percentage, for example, 65% oleum.
Пример. Загружают 650-700 г 25%-ного олеума и 70 г сульфата натри и затем 1 моль 1,8-нафтиламинсульфокислоты с такой скоростью , чтобы температура сульфомассы па прот и еппп всей длнтельпости загрузки была равна 25-30°.Example. Load 650-700 g of 25% oleum and 70 g of sodium sulfate and then 1 mol of 1,8-naphthylaminesulfonic acid at such a rate that the temperature of the sulphatolate prot and eppp of the entire longitudinal load is 25-30 °.
После внесени 1,8-нафтиламинсульфокислоты загружают 150 г 60-65%-ного олеума и затем в течение получаса температуру массы довод т до 60° и выдерживают при этой температуре один час. Затем температуру массы снижают до 50°, загружают в течение одного часа 325-350 г 60-65%-ного олеума. Температуру массы довод т в течение одного часа до 65-70° и выдерживают при этой температуре до око1 чапи сульфировани , т. е. 3-4 час.After adding 1,8-naphthylaminesulfonic acid, 150 g of 60-65% oleum is loaded and then the mass temperature is brought to 60 ° within half an hour and kept at this temperature for one hour. Then the temperature of the mass is reduced to 50 °, 325-350 g of 60-65% oleum is loaded within one hour. The temperature of the mass is brought to 65-70 ° C for one hour and kept at this temperature until about 1 to 4 hours of sulfonation, i.e. 3-4 hours.
Предмет изобретени Subject invention
Способ получени 1,8-нафтсультам-2.4-дисульфокислоты сульфированием 1,8-нафтиламинсульфокислоты, отличающийс тем, что свободную 1,8-нафтиламинсульфокислоту сульфируют сначала смесью 25-35%-ного олеума и безводного сульфата натри , а затем высокопроиентным , например, 65%1-ным олеумом и конечный продукт выдел ют обычным образом.A method for preparing 1,8-naphtsul-2.4-disulfonic acid by sulfonating 1,8-naphthylamine sulfonic acid, characterized in that the free 1,8-naphtylamine sulfonic acid is sulphated first with a mixture of 25-35% oleum and anhydrous sodium sulfate and then high-grade, for example, % 1% oleum and the final product is isolated in the usual manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU33175A SU61265A1 (en) | 1940-06-13 | 1940-06-13 | Method for preparing 1,8-naphtsul-2,4-disulfonic acids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU33175A SU61265A1 (en) | 1940-06-13 | 1940-06-13 | Method for preparing 1,8-naphtsul-2,4-disulfonic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU61265A1 true SU61265A1 (en) | 1941-11-30 |
Family
ID=48242710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU33175A SU61265A1 (en) | 1940-06-13 | 1940-06-13 | Method for preparing 1,8-naphtsul-2,4-disulfonic acids |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU61265A1 (en) |
-
1940
- 1940-06-13 SU SU33175A patent/SU61265A1/en active
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