SU248641A1 - The method of producing calcium cyanamide - Google Patents
The method of producing calcium cyanamideInfo
- Publication number
- SU248641A1 SU248641A1 SU1230468A SU1230468A SU248641A1 SU 248641 A1 SU248641 A1 SU 248641A1 SU 1230468 A SU1230468 A SU 1230468A SU 1230468 A SU1230468 A SU 1230468A SU 248641 A1 SU248641 A1 SU 248641A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- product
- calcium
- temperature
- urea
- calcium cyanamide
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 6
- MVXMNHYVCLMLDD-UHFFFAOYSA-N 4-methoxynaphthalene-1-carbaldehyde Chemical compound C1=CC=C2C(OC)=CC=C(C=O)C2=C1 MVXMNHYVCLMLDD-UHFFFAOYSA-N 0.000 title description 3
- 239000011575 calcium Substances 0.000 claims description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 7
- 229910052791 calcium Inorganic materials 0.000 claims description 7
- 239000004202 carbamide Substances 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 claims 4
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 claims 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims 1
- 230000003993 interaction Effects 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- LRKMVRPMFJFKIN-UHFFFAOYSA-N oxocalcium hydrate Chemical compound [O].O.[Ca] LRKMVRPMFJFKIN-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 210000004885 white matter Anatomy 0.000 description 1
Landscapes
- Fertilizers (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
Известен снособ получени цианамида кальци путем взаимодействи мочевины с окисью кальци в мол рном отношении 3:1 при температуре ЗОО Си прокаливании продукта при температуре 700 С. Процесс провод т при высокой температуре в закрььтом котле. Однако темпер атура прокаливани не достатота дл получени продукта высокой чистоты. Дл упрощени способа и повышени качества продукта предлагаетс мочевину и кальцийсодержащий продукт брать в мол 1 ном отношении 2-3:1. Процесс осуществл ю при 13О-22О С с после ;у.ш.им прокаливанием продукта при 8ОО«9ОО С, Процесс осуществл ют в очкрытом- реакторе при атмосферном или пониженном давл В качестве кальцийсодержащего продукта примен ют алкогол т кальци , окись или гнн драт окиси кальци и карбонат кальци . Полученный продукт содержит 98-100% цианамида кальци и пригоден дл приготовлени лекарственного препарата. метилата кальци и 3,3 г (5,50-1О моль) мочевины нагревают при температуре и давлении около 1 мм рт. ст. в течение 2 час. Далее, при атмосферном аавлении в токе азота температуру реакционной смеси повышают постепенно до 900 С, После нагревани при этой температуре в течение 2 час получают 1,7 г белого продукта . Найдено, %: Са 49,7; N34,5. Вычислено, % Са 5О,О: N35.0. Пример 2. Смесь 2 г (3,57-1О моль) окиси кальци и 6,4 г (1О,7-1О моль) мочевины нагревают до температуры ;i2O С при атмосферном или пониженном давлении и выдерживают в этих услови х в течение 1 час. Затем реакционную смесь нагревают в токе азота до температуры 900 С и прокаливают при этой температуре в течение 1-2 час. Получают 2,6 г белого рыхлого вещества. Найдено , %: Са 50,9; 434,3. Пример 3. Смесь 2 г (2,) гидрата окиси кальци и 4,8 г (8,0-10 моль) мочевины нагревают при температуре 14О СA known method for producing calcium cyanamide is by reacting urea with calcium oxide in a molar ratio of 3: 1 at a temperature of 309CU, calcining the product at a temperature of 700 ° C. The process is carried out at a high temperature in a closed boiler. However, the calcination temperature is not sufficient to produce a high purity product. To simplify the process and improve the quality of the product, it is proposed to take urea and calcium-containing product in a molar ratio of 2-3: 1. The process was carried out at 13О-22О С with after; by conventional ignition of the product at 8OO "9OO С. The process is carried out in an open-reactor at atmospheric or reduced pressure. Calcium alcohol, oxide or carbonate is used as the calcium-containing product. calcium oxides and calcium carbonate. The resulting product contains 98-100% calcium cyanamide and is suitable for the preparation of a medicament. Calcium methylate and 3.3 g (5.50-1O mol) of urea are heated at a temperature and pressure of about 1 mm Hg. Art. within 2 hours Further, at atmospheric pressure in a stream of nitrogen, the temperature of the reaction mixture is gradually increased to 900 ° C. After heating at this temperature for 2 hours, 1.7 g of a white product is obtained. Found,%: Ca 49.7; N34.5. Calculated,% Ca 5O, O: N35.0. Example 2. A mixture of 2 g (3.57-1O mol) of calcium oxide and 6.4 g (1O, 7-1O mol) of urea is heated to a temperature of i2O C at atmospheric or reduced pressure and maintained under these conditions for 1 hour. Then the reaction mixture is heated in a stream of nitrogen to a temperature of 900 ° C and calcined at this temperature for 1-2 hours. 2.6 g of white friable material are obtained. Found,%: Ca 50.9; 434.3. Example 3. A mixture of 2 g (2,) of calcium oxide hydrate and 4.8 g (8.0-10 mol) of urea is heated at a temperature of 14 ° C
и давлении около 1 мм рт, ст. в течение 2 час. Затем продукт нагревают до температуры 90 О С в токе азота при атмосферном давлении и выдерживают в этих услови х 1-2 час. Получают 2,0 г белого вещества. Найдено, %: Са 49,7; N35,0,and a pressure of about 1 mm Hg, Art. within 2 hours Then the product is heated to a temperature of 90 ° C in a stream of nitrogen at atmospheric pressure and kept under these conditions for 1-2 hours. Obtain 2.0 g of white matter. Found,%: Ca 49.7; N35.0,
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1230468A SU248641A1 (en) | 1968-04-03 | 1968-04-03 | The method of producing calcium cyanamide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1230468A SU248641A1 (en) | 1968-04-03 | 1968-04-03 | The method of producing calcium cyanamide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU248641A1 true SU248641A1 (en) | 1976-07-25 |
Family
ID=20442187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1230468A SU248641A1 (en) | 1968-04-03 | 1968-04-03 | The method of producing calcium cyanamide |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU248641A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4408271A1 (en) * | 1994-03-11 | 1995-09-14 | Sueddeutsche Kalkstickstoff | Process for the preparation of calcium cyanamide from urea |
-
1968
- 1968-04-03 SU SU1230468A patent/SU248641A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4408271A1 (en) * | 1994-03-11 | 1995-09-14 | Sueddeutsche Kalkstickstoff | Process for the preparation of calcium cyanamide from urea |
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