CN115745834A - Production process of p-chlorobenzene acetonitrile - Google Patents
Production process of p-chlorobenzene acetonitrile Download PDFInfo
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- CN115745834A CN115745834A CN202211517221.7A CN202211517221A CN115745834A CN 115745834 A CN115745834 A CN 115745834A CN 202211517221 A CN202211517221 A CN 202211517221A CN 115745834 A CN115745834 A CN 115745834A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- QLKISOCKGGPANH-UHFFFAOYSA-N acetonitrile;chlorobenzene Chemical compound CC#N.ClC1=CC=CC=C1 QLKISOCKGGPANH-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 36
- 239000012295 chemical reaction liquid Substances 0.000 claims abstract description 33
- 239000000243 solution Substances 0.000 claims abstract description 32
- 238000004821 distillation Methods 0.000 claims abstract description 27
- 238000009833 condensation Methods 0.000 claims abstract description 24
- 230000005494 condensation Effects 0.000 claims abstract description 24
- 238000001556 precipitation Methods 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 5
- JQZAEUFPPSRDOP-UHFFFAOYSA-N 1-chloro-4-(chloromethyl)benzene Chemical compound ClCC1=CC=C(Cl)C=C1 JQZAEUFPPSRDOP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000007864 aqueous solution Substances 0.000 claims abstract description 4
- 239000011259 mixed solution Substances 0.000 claims abstract description 4
- 238000000967 suction filtration Methods 0.000 claims abstract description 4
- 238000005057 refrigeration Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 4
- IVYMIRMKXZAHRV-UHFFFAOYSA-N 4-chlorophenylacetonitrile Chemical compound ClC1=CC=C(CC#N)C=C1 IVYMIRMKXZAHRV-UHFFFAOYSA-N 0.000 claims description 3
- GJNGXPDXRVXSEH-UHFFFAOYSA-N 4-chlorobenzonitrile Chemical compound ClC1=CC=C(C#N)C=C1 GJNGXPDXRVXSEH-UHFFFAOYSA-N 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 abstract description 4
- 230000008025 crystallization Effects 0.000 abstract description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a production process of p-chlorobenzene acetonitrile, which uses production equipment and comprises the following steps: the method comprises the following steps: adding an aqueous solution of sodium cyanide into a distillation box, and heating the distillation box through a heater; step two: after the sodium cyanide is completely dissolved, dropwise adding a p-chlorobenzyl chloride solution into the solution, and simultaneously stirring the mixed solution by a stirring assembly; step three: continuously heating the distillation box, heating and gasifying the solution, then feeding the solution into a condensation connecting pipe, condensing the solution by a refrigerating assembly, and then feeding the solution into a precipitation part; step four: the precipitation part cools the reaction liquid, and the reaction liquid is layered; step five: layering the reaction solution by using a layering component, cooling and crystallizing the solution on the upper layer, and performing suction filtration to obtain a p-chlorobenzene acetonitrile solid; the invention ensures that the upper layer of the reaction liquid is not mixed with the lower layer of the reaction liquid when cooling crystallization is carried out, thereby effectively improving the quality of the finished product of the p-chlorobenzene acetonitrile.
Description
Technical Field
The invention relates to the technical field of production of p-chlorobenzene acetonitrile, in particular to a production process of the p-chlorobenzene acetonitrile.
Background
P-chlorophenyl acetonitrile, molecular weight 151.5929, colorless to pale yellow solid, dissolved in acetone and ethanol. Widely used as an intermediate for synthesizing industry and medicines.
In the prior art, different devices are required for producing the p-chlorobenzene acetonitrile, the same device cannot be well compatible with conditions required by production, and when reaction solution is layered, the upper-layer reaction solution is easily taken out to be doped with the lower-layer solution, so that the quality of a finished product of the p-chlorobenzene acetonitrile is poor.
Disclosure of Invention
The invention aims to provide a production process of p-chlorobenzene acetonitrile, which ensures that an upper layer of reaction liquid is not mixed with a lower layer of reaction liquid during cooling crystallization, thereby effectively improving the quality of a finished product of the p-chlorobenzene acetonitrile.
The purpose of the invention can be realized by the following technical scheme:
a production process of p-chlorobenzene acetonitrile uses production equipment and comprises the following steps:
the method comprises the following steps: adding an aqueous solution of sodium cyanide into a distillation box, and heating the distillation box through a heater;
step two: after the sodium cyanide is completely dissolved, dropwise adding a p-chlorobenzyl chloride solution into the solution, and simultaneously stirring the mixed solution by a stirring assembly;
step three: continuously heating the distillation box, heating and gasifying the solution, then feeding the solution into a condensation connecting pipe, condensing the solution by a refrigerating assembly, and then feeding the solution into a precipitation part;
step four: the precipitation part cools the reaction liquid, and the reaction liquid is layered;
step five: and layering the reaction liquid by utilizing a layering component, cooling and crystallizing the solution on the upper layer, and performing suction filtration to obtain the p-chlorobenzene acetonitrile solid.
The production equipment comprises a supporting seat, wherein a distillation box is fixedly arranged at the upper end of the supporting seat, and a heater for heating is arranged on the supporting seat; the distillation box is connected with a precipitation part through a condensation connecting pipe, the refrigeration component is connected with the condensation connecting pipe and the precipitation part, the precipitation part is provided with a driving cylinder, and the layering component is connected with the output end of the driving cylinder.
As a further scheme of the invention: the stirring assembly comprises a stirring motor arranged on the side wall of the distillation box and a stirring shaft arranged inside the distillation box in a rotating mode, a driven gear is fixedly arranged on the stirring shaft, a driving gear meshed with the driven gear is fixedly arranged on an output shaft of the stirring motor, and a plurality of groups of stirring blades are fixedly arranged on the periphery of the stirring shaft.
As a further scheme of the invention: the sedimentation component comprises an inner box body and an outer box body, and a cooling cavity is formed between the outer box body and the inner box body.
As a further scheme of the invention: the outer box body is connected with the inner box body through a plurality of connecting blocks, and a liquid pumping pipe is arranged at the upper end of the inner box body.
As a further scheme of the invention: the refrigeration assembly comprises a refrigeration box body and a condensation pipe, the condensation pipe is sleeved on the periphery of the condensation connecting pipe, a condensation pump is arranged on the refrigeration box body, the output end of the condensation pump is connected with the condensation pipe through a first connecting pipe, and the lower end of the condensation pipe is connected with the refrigeration box body through a return pipe.
As a further scheme of the invention: and the outlet of the condensate pump is connected with a second connecting pipe, a third connecting pipe and a fourth connecting pipe are connected to the second connecting pipe, the third connecting pipe is connected with the cooling cavity, and the fourth connecting pipe is connected with the inside of the inner box body.
As a further scheme of the invention: the layering component comprises an upper baffle, the lower end of the upper baffle is provided with a sliding groove, a lower baffle is arranged at the sliding groove, through grooves are formed in the upper baffle and the lower baffle, a support is fixedly arranged at the upper end of the upper baffle, and the support is fixedly connected to the output end of the driving cylinder.
As a further scheme of the invention: the lower baffle plate is provided with a connecting rod, the upper end of the connecting rod is fixedly provided with a connecting plate, the connecting plate is fixedly provided with a drive plate, the support is fixedly provided with a seat plate, the seat plate is fixedly provided with an air cylinder, and the output end of the air cylinder is fixedly connected onto the drive plate.
The invention has the beneficial effects that:
(1) The production machine type molding of the p-chlorobenzene acetonitrile by adopting special production equipment can effectively ensure the production efficiency of the p-chlorobenzene acetonitrile.
(2) Drive the drive plate through the cylinder and slide, the drive plate slides in the spout through baffle under the connecting rod drives, thereby the position of logical groove on the baffle under the change, then the overhead gage is the same with logical groove position down between the baffle before the reaction liquid layering, the position of logical groove is crisscross between overhead gage and the lower baffle after the reaction liquid layering, make the logical groove of overhead gage be in the encapsulated situation, thereby ensure that the reaction liquid can the layering completely, ensure that the upper strata of reaction liquid can not take place to mix with lower floor's reaction liquid when cooling the crystallization, thereby can effectively improve the finished product quality to chlorobenzene acetonitrile.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a schematic perspective view of a layered assembly of the present invention;
FIG. 3 is a schematic top view of the layered assembly of the present invention;
FIG. 4 is a cross-sectional structural schematic of the layered assembly of the present invention.
In the figure: 1. a supporting base; 2. a heater; 3. a distillation box; 4. a condensation connecting pipe; 5. a refrigeration assembly; 51. a refrigeration box body; 52. a condensate pump; 53. a first connecting pipe; 54. a condenser tube; 55. a return pipe; 56. a second connecting pipe; 57. a third connecting pipe; 58. a fourth connecting pipe; 6. a precipitation member; 61. an inner box body; 62. an outer case; 63. connecting blocks; 64. a cooling chamber; 65. a liquid pumping pipe; 7. a driving cylinder; 8. a layered component; 81. an upper baffle plate; 82. a chute; 83. a lower baffle plate; 84. a support; 85. a connecting rod; 86. connecting plates; 87. a drive plate; 88. a seat plate; 89. a cylinder; 9. a stirring assembly; 91. a stirring motor; 92. a driving gear; 93. a bearing seat; 94. a driven gear; 95. a stirring shaft; 96. a stirring blade.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention relates to a process for producing p-chlorobenzonitrile, which uses production equipment, comprising the following steps:
the method comprises the following steps: adding an aqueous solution of sodium cyanide into a distillation box 3, and heating the distillation box 3 through a heater 2;
step two: after the sodium cyanide is completely dissolved, dropwise adding a p-chlorobenzyl chloride solution into the solution, and simultaneously stirring the mixed solution by a stirring assembly 9;
step three: continuously heating the distillation box 3, heating and gasifying the solution, then feeding the solution into a condensation connecting pipe 4, condensing the solution by a refrigerating assembly 5, and then feeding the solution into a precipitation part 6;
step four: the precipitation part 6 cools the reaction liquid, and the reaction liquid is layered;
step five: and (3) layering the reaction solution by using the layering component 8, cooling and crystallizing the solution on the upper layer, and performing suction filtration to obtain the p-chlorobenzene acetonitrile solid.
The production equipment comprises a supporting seat 1, wherein a distillation box 3 is fixedly arranged at the upper end of the supporting seat 1, and a heater 2 for heating is arranged on the supporting seat 1; distillation box 3 is connected with precipitation part 6 through condenser connection 4, and refrigeration subassembly 5 links to each other with condenser connection 4 and precipitation part 6, installs driving cylinder 7 on the precipitation part 6, and layering subassembly 8 is connected at the output of driving cylinder 7.
The stirring assembly 9 comprises a stirring motor 91 arranged on the side wall of the distillation box 3 and a stirring shaft 95 rotatably arranged inside the distillation box 3, wherein the stirring shaft 95 is arranged inside the distillation box 3 through a bearing seat 93. A driven gear 94 is fixedly arranged on the stirring shaft 95, a driving gear 92 meshed with the driven gear 94 is fixedly arranged on an output shaft of the stirring motor 91, and a plurality of groups of stirring blades 96 are fixedly arranged on the periphery of the stirring shaft 95.
When the reaction liquid heats in distillation box 3, drive driving gear 92 through agitator motor 91 and rotate, driving gear 92 drives driven gear 94 and (mixing) shaft 95 and rotates, and (mixing) shaft 95 drives stirring vane 96 and rotates and stir the mixture to the reaction liquid for the reaction liquid can the intensive mixing even, ensures the reaction of parachlorobenzene acetonitrile and produces.
The settling section 6 includes an inner case 61 and an outer case 62, and a cooling chamber 64 is formed between the outer case 62 and the inner case 61. The outer box body 62 is connected with the inner box body 61 through a plurality of connecting blocks 63, and the upper end of the inner box body 61 is provided with a liquid extracting pipe 65.
The distilled reaction liquid enters the inner box body 61, is layered after being cooled in the inner box body 61, is crystallized and filtered by taking the upper layer of the reaction liquid to obtain p-chlorobenzene acetonitrile solid, and ensures the uniform cooling of the reaction liquid by arranging the cooling cavity 64, thereby ensuring the layered stability of the reaction liquid.
The refrigerating assembly 5 comprises a refrigerating box body 51 and a condensing pipe 54, the condensing pipe 54 is sleeved on the periphery of the condensing connecting pipe 4, a condensing pump 52 is arranged on the refrigerating box body 51, the output end of the condensing pump 52 is connected with the condensing pipe 54 through a first connecting pipe 53, and the lower end of the condensing pipe 54 is connected with the refrigerating box body 51 through a return pipe 55.
The coolant in the refrigeration tank 51 is pumped out by the condensate pump 52 and sent into the condensation pipe 54 through the first connection pipe 53, the reaction liquid in the condensation pipe 4 is condensed, and the reaction liquid in the condensation pipe 54 is returned into the refrigeration tank 51 through the return pipe 55.
The outlet of the condensing pump 52 is connected with a second connecting pipe 56, the second connecting pipe 56 is connected with a third connecting pipe 57 and a fourth connecting pipe 58, the third connecting pipe 57 is connected with a cooling cavity 64, and the fourth connecting pipe 58 is connected with the inside of the inner box body 61.
The third connecting pipe 57 is used for adding cooling liquid into the cooling chamber 64 to cool the reaction liquid in the inner box 61, and the fourth connecting pipe 58 is used for adding cooling liquid into the inner box 61 to clean the inner box 61.
The layered assembly 8 comprises an upper baffle 81, a sliding groove 82 is formed in the lower end of the upper baffle 81, a lower baffle 83 is arranged at the sliding position of the sliding groove 82, through grooves are formed in the upper baffle 81 and the lower baffle 83, a support 84 is fixedly arranged at the upper end of the upper baffle 81, and the support 84 is fixedly connected to the output end of the driving cylinder 7.
A connecting rod 85 is arranged on the lower baffle 83, a connecting plate 86 is fixedly arranged at the upper end of the connecting rod 85, a driving plate 87 is fixedly arranged on the connecting plate 86, a seat plate 88 is fixedly arranged on the support 84, an air cylinder 89 is fixedly arranged on the seat plate 88, and the output end of the air cylinder 89 is fixedly connected onto the driving plate 87.
Drive plate 87 through cylinder 89 and slide, drive plate 87 passes through connecting rod 85 and drives down baffle 83 and slide in spout 82, thereby change down the position of leading to the groove on baffle 83, then go up baffle 81 before the reaction liquid layering and lead to the groove position between the baffle 83 the same down, it is crisscross to lead to the groove position between baffle 81 and the lower baffle 83 after the reaction liquid layering, make the logical groove of overhead gage 81 be in the encapsulated situation, thereby ensure that the reaction liquid can stratify completely, ensure that the upper strata of reaction liquid can not take place to mix with lower floor's reaction liquid when cooling the crystallization, thereby can effectively improve the finished product quality to chlorobenzene acetonitrile.
Although one embodiment of the present invention has been described in detail, the description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (9)
1. The production process of the p-chlorobenzene acetonitrile is characterized by using production equipment and comprising the following steps of:
the method comprises the following steps: adding an aqueous solution of sodium cyanide into a distillation box (3), and heating the distillation box (3) through a heater (2);
step two: after the sodium cyanide is completely dissolved, dropwise adding a p-chlorobenzyl chloride solution into the solution, and simultaneously stirring the mixed solution by a stirring assembly (9);
step three: the distillation box (3) is continuously heated, the solution is heated and gasified, then enters the condensation connecting pipe (4), is condensed by the refrigeration component (5), and then flows into the precipitation component (6);
step four: the precipitation part (6) cools the reaction liquid, and the reaction liquid is layered;
step five: and (3) layering the reaction solution by using a layering component (8), cooling and crystallizing the solution on the upper layer, and performing suction filtration to obtain the p-chlorobenzene acetonitrile solid.
2. The production process of the parachlorophenylacetonitrile according to claim 1, wherein the production equipment comprises a supporting seat (1), a distillation box (3) is fixedly arranged at the upper end of the supporting seat (1), and a heater (2) for heating is arranged on the supporting seat (1); distillation case (3) are connected with precipitation part (6) through condenser pipe (4), and refrigeration subassembly (5) link to each other with condenser pipe (4) and precipitation part (6), install driving cylinder (7) on precipitation part (6), the output at driving cylinder (7) is connected in layering subassembly (8).
3. The production process of the parachlorophenylacetonitrile according to claim 2, wherein the stirring assembly (9) comprises a stirring motor (91) arranged on the side wall of the distillation box (3) and a stirring shaft (95) rotatably arranged inside the distillation box (3), a driven gear (94) is fixedly arranged on the stirring shaft (95), a driving gear (92) meshed with the driven gear (94) is fixedly arranged on an output shaft of the stirring motor (91), and a plurality of groups of stirring blades (96) are fixedly arranged on the periphery of the stirring shaft (95).
4. The production process of the parachlorophenylacetonitrile according to claim 2, wherein the precipitation part (6) comprises an inner box body (61) and an outer box body (62), and a cooling cavity (64) is formed between the outer box body (62) and the inner box body (61).
5. The production process of p-chlorophenyl acetonitrile according to claim 4, wherein the outer casing (62) is connected to the inner casing (61) via a plurality of connecting blocks (63), and the upper end of the inner casing (61) is provided with a liquid extracting tube (65).
6. The production process of the parachlorophenylacetonitrile according to claim 4, wherein the refrigeration assembly (5) comprises a refrigeration box body (51) and a condensation pipe (54), the condensation pipe (54) is sleeved on the periphery of the condensation connecting pipe (4), a condensation pump (52) is arranged on the refrigeration box body (51), the output end of the condensation pump (52) is connected with the condensation pipe (54) through a first connecting pipe (53), and the lower end of the condensation pipe (54) is connected with the refrigeration box body (51) through a return pipe (55).
7. The production process of p-chlorophenyl acetonitrile according to claim 6, wherein the outlet of the condensate pump (52) is connected to a second connecting pipe (56), the second connecting pipe (56) is connected to a third connecting pipe (57) and a fourth connecting pipe (58), the third connecting pipe (57) is connected to the cooling chamber (64), and the fourth connecting pipe (58) is connected to the interior of the inner tank (61).
8. The production process of the parachlorophenylacetonitrile according to claim 2, wherein the layering assembly (8) comprises an upper baffle (81), a sliding groove (82) is formed in the lower end of the upper baffle (81), a lower baffle (83) is slidably arranged at the sliding groove (82), through grooves are formed in the upper baffle (81) and the lower baffle (83), a support (84) is fixedly arranged at the upper end of the upper baffle (81), and the support (84) is fixedly connected to the output end of the driving cylinder (7).
9. The production process of p-chlorobenzonitrile according to claim 8, wherein the lower baffle (83) is provided with a connecting rod (85), the upper end of the connecting rod (85) is fixedly provided with a connecting plate (86), the connecting plate (86) is fixedly provided with a driving plate (87), the bracket (84) is fixedly provided with a seat plate (88), the seat plate (88) is fixedly provided with an air cylinder (89), and the output end of the air cylinder (89) is fixedly connected to the driving plate (87).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211517221.7A CN115745834A (en) | 2022-11-29 | 2022-11-29 | Production process of p-chlorobenzene acetonitrile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211517221.7A CN115745834A (en) | 2022-11-29 | 2022-11-29 | Production process of p-chlorobenzene acetonitrile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115745834A true CN115745834A (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211517221.7A Pending CN115745834A (en) | 2022-11-29 | 2022-11-29 | Production process of p-chlorobenzene acetonitrile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115745834A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744570A (en) * | 2018-06-20 | 2018-11-06 | 无棣县格桑花技术服务中心 | A kind of distillation equipment for Chemical Manufacture of environmental protection |
| CN112457212A (en) * | 2020-10-28 | 2021-03-09 | 安徽海顺化工有限公司 | Production process and production device for p-chlorobenzene acetonitrile |
-
2022
- 2022-11-29 CN CN202211517221.7A patent/CN115745834A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744570A (en) * | 2018-06-20 | 2018-11-06 | 无棣县格桑花技术服务中心 | A kind of distillation equipment for Chemical Manufacture of environmental protection |
| CN112457212A (en) * | 2020-10-28 | 2021-03-09 | 安徽海顺化工有限公司 | Production process and production device for p-chlorobenzene acetonitrile |
Non-Patent Citations (1)
| Title |
|---|
| 罗新湘, 文瑞明: "对氯苯乙腈合成方法改进", 湖南城市学院学报(自然科学版), vol. 14, no. 1, pages 53 - 54 * |
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