CN1085616C - Process for producing barium azide - Google Patents
Process for producing barium azide Download PDFInfo
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- CN1085616C CN1085616C CN96117183A CN96117183A CN1085616C CN 1085616 C CN1085616 C CN 1085616C CN 96117183 A CN96117183 A CN 96117183A CN 96117183 A CN96117183 A CN 96117183A CN 1085616 C CN1085616 C CN 1085616C
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- barium azide
- azide
- sodium hydroxide
- barium
- mouthfuls
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Abstract
The present invention relates to a technology of producing barium azide. The producing barium azid comprises components (by weight): 1 portion of sodium azide, 0.33 portion of sodium hydrate, 6 portions of sulfuric acid solution and 2.4 portions of barium hydroxide. The producing technology comprises: (1) the sodium azide and the sodium hydrate are taken; (2) a dropping funnel and a condenser are installed, and the condenser is connected with a two-mouth flask; (3) 40% sulfuric acid solution is dropped, when the temperature reaches 105 DEGC, the heating distillation is stopped; (4) stirring operation is continuously carried out; (5) filtration is carried out; (6) mother liquor is concentrated or recrystallized, and barium azide is obtained; (7) low temperature drying in vacuum is carried out; (8) the dried barium azide is sieved; (9) package is carried out after measurement. The present invention has the characteristics of simple manufacturing process, reliable product performance, etc.
Description
What the present invention relates to is a kind of production method of barium azide.
Barium azide is as a kind of novel, and the lamp of superior performance is adopted and alternative traditional getter by increasing light source manufacturer with getter.More outstanding is, in recent years, by the automobile bubble production line that Taiwan, Korea S introduce, 110V starter production line, and partly red-letter day bubble, decorate bubble production line etc. and all will use barium azide as getter, and consumption grows with each passing day.The whole dependence on import of the barium azide of domestic use, and because it belongs to hazardous substance, be not to unify import by national foreign trade agency, so cause very big difficulty to applying unit.
The objective of the invention is to defective, develop a kind of production technique of barium azide voluntarily, to satisfy demestic user's needs at above-mentioned existence.
Technical solution of the present invention:
The weight proportion of its each composition is a sodiumazide: sodium hydroxide: sulphuric acid soln: hydrated barta=1: 1.33-0.133: 6: 2.4;
40% sulphuric acid soln has the hydrated barta of 8 crystal water;
The weight ratio of each composition can be a sodiumazide: sodium hydroxide: sulphuric acid soln: hydrated barta=1: 1.33-0.133: 6: 2.4 or=1: 0.33: 12-3: the optimum weight ratio of 2.4 each composition is sodiumazide: sodium hydroxide: sulphuric acid soln: hydrated barta=1: 0.33: 6: 2.4, the sodium hydroxide in above-mentioned is the available hydrogen potassium oxide also.
The production technique of barium azide, it is characterized in that branch (1) is by each composition part by weight, getting sodiumazide and sodium hydroxide packs into and uses water dissolution in three mouthfuls of distilling flasks, (2) install dropping funnel and condenser, one end of condenser is connected with two mouthfuls of flasks that the band that the baryta water that contains 8 crystal water is housed stirs with joint, (3) treat sodiumazide, the solution boiling of sodium hydroxide, the sulphuric acid soln of dropping 40%, continue distillation, when treating that three mouthfuls of solution temperatures in the distilling flask reach 105 ℃, stop to add thermal distillation, (4) solution in two mouthfuls of flasks is continued to stir 10 minutes, (5) filter, obtain anhydrous barium azide, (6) again with mother liquor with being with water-cooled rotatory evaporator to concentrate or using cryogenic freezing to carry out recrystallization, obtain a hydration barium azide, (7) are with above-mentioned (5), (6) barium azide that obtains carries out vacuum dehydrating at lower temperature respectively; (8) sieve with 100 mesh sieve, (9) dress up finished product with bottled or vacuum packet after doing the mensuration of content calcium, magnesium, iron, aluminium, copper.
Advantage of the present invention: technology is simply superior, and reliable product quality can satisfy user's service requirements and needs.
Embodiment 1:
Getting 15 gram barium azide and 5 gram sodium hydroxide packs into and dissolves with 100 ml waters in 250 milliliters of three mouthfuls of distilling flasks, install dropping funnel and condenser, one end of condenser is connected with two mouthfuls of flasks of 500ml that band stirs with joint, the hydrated barta (8 crystal water) and 200 ml waters that contain 36 grams in this flask, to above-mentioned there-necked flask heating, make sodiumazide, the solution boiling of sodium hydroxide, drip 90 milliliters of 40% sulphuric acid solns with that, continue to add thermal distillation when treating that solution temperature reaches 105 ℃ in three mouthfuls of distilling flasks, stop to add thermal distillation, solution in two mouthfuls of flasks is continued to stir 10 minutes after-filtration can obtain anhydrous barium azide, mother liquor is with being with water-cooled rotatory evaporator to concentrate, can obtain a hydration barium azide, an above-mentioned anhydrous barium azide and a hydration barium azide are carried out vacuum dehydrating at lower temperature respectively; 100 orders sieve, and obtain total barium azide 25.4 grams.
Embodiment 2,3, the same embodiment 1, and only changing sodium hydroxide weight respectively is 20g, 2g.
Embodiment 4,5, and with embodiment 1, the volume that only changes 40% sulphuric acid soln is 180ml, 45ml.
Embodiment 1-5 result is similar.
Claims (2)
1, the production method of barium azide, the part by weight that it is characterized in that its each composition of processing step branch (1) is a sodiumazide: sodium hydroxide: sulphuric acid soln: hydrated barta=1: 1.33-0.133: 6: 2.4 or 1: 0.33: 12-3: 2.4, and sodiumazide and the sodium hydroxide at first got are wherein packed into and are used water dissolution in three mouthfuls of distilling flasks; (2) install dropping funnel and condenser, an end of condenser is connected with two mouthfuls of flasks that the band that the baryta water that contains 8 crystal water is housed stirs with joint; (3) treat the solution boiling of sodiumazide, sodium hydroxide, drip 40% sulphuric acid soln, continue distillation, when treating that three mouthfuls of solution temperatures in the distilling flask reach 105 ℃, stop to add thermal distillation; (4) solution in two mouthfuls of flasks is continued to stir 10 minutes; (5) filter, obtain anhydrous barium azide; (6) again with mother liquor with being with water-cooled rotatory evaporator to concentrate or using cryogenic freezing to carry out recrystallization, obtain a hydration barium azide; (7) barium azide that above-mentioned (5), (6) are obtained carries out vacuum dehydrating at lower temperature respectively; (8) sieve with 100 mesh sieve; (9) dress up finished product with bottled or vacuum packet after doing the mensuration of content calcium, magnesium, iron, aluminium, copper.
2, the production method of barium azide according to claim 1 is characterized in that the weight ratio of each composition, sodiumazide: sodium hydroxide: sulphuric acid soln: hydrated barta=1: 0.33: 6: 2.4, and the sodium hydroxide in above-mentioned replaces with potassium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96117183A CN1085616C (en) | 1996-11-25 | 1996-11-25 | Process for producing barium azide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96117183A CN1085616C (en) | 1996-11-25 | 1996-11-25 | Process for producing barium azide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1156122A CN1156122A (en) | 1997-08-06 |
| CN1085616C true CN1085616C (en) | 2002-05-29 |
Family
ID=5124116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96117183A Expired - Fee Related CN1085616C (en) | 1996-11-25 | 1996-11-25 | Process for producing barium azide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1085616C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7534635B1 (en) * | 2008-03-24 | 2009-05-19 | General Electric Company | Getter precursors for hermetically sealed packaging |
| CN103864034A (en) * | 2014-03-17 | 2014-06-18 | 南京理工大学 | Method and device for synthesizing copper azide |
| CN110204340A (en) * | 2019-05-27 | 2019-09-06 | 北京智芯微电子科技有限公司 | Make the method for raw material synthesis I- type silicon substrate Runge-Kutta integration under high temperature and pressure with barium azide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56149797A (en) * | 1980-04-21 | 1981-11-19 | Tokyo Shibaura Electric Co | Glow tube |
| EP0184951A1 (en) * | 1984-11-13 | 1986-06-18 | Centre National De La Recherche Scientifique (Cnrs) | Nitrided or oxynitrided compounds with a perovskite sructure, their preparation and their use in the manufacture of dielectric components |
| KR890001418B1 (en) * | 1985-12-27 | 1989-05-03 | 김의동 | Preparation for making method of azid |
-
1996
- 1996-11-25 CN CN96117183A patent/CN1085616C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56149797A (en) * | 1980-04-21 | 1981-11-19 | Tokyo Shibaura Electric Co | Glow tube |
| EP0184951A1 (en) * | 1984-11-13 | 1986-06-18 | Centre National De La Recherche Scientifique (Cnrs) | Nitrided or oxynitrided compounds with a perovskite sructure, their preparation and their use in the manufacture of dielectric components |
| KR890001418B1 (en) * | 1985-12-27 | 1989-05-03 | 김의동 | Preparation for making method of azid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1156122A (en) | 1997-08-06 |
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