CN102980829A - Method for detecting barium content in barium stearate via precipitation method - Google Patents
Method for detecting barium content in barium stearate via precipitation method Download PDFInfo
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- CN102980829A CN102980829A CN2011102605912A CN201110260591A CN102980829A CN 102980829 A CN102980829 A CN 102980829A CN 2011102605912 A CN2011102605912 A CN 2011102605912A CN 201110260591 A CN201110260591 A CN 201110260591A CN 102980829 A CN102980829 A CN 102980829A
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- Prior art keywords
- barium
- stearate
- content
- weighing
- barium stearate
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- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 title claims abstract description 44
- 229910052788 barium Inorganic materials 0.000 title claims abstract description 31
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000001556 precipitation Methods 0.000 title claims abstract description 15
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 64
- 238000005303 weighing Methods 0.000 claims abstract description 15
- 238000002479 acid--base titration Methods 0.000 claims abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 32
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000002244 precipitate Substances 0.000 claims description 10
- 238000001354 calcination Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 2
- 235000021355 Stearic acid Nutrition 0.000 description 9
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 9
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 9
- 239000008117 stearic acid Substances 0.000 description 9
- 235000011121 sodium hydroxide Nutrition 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 159000000009 barium salts Chemical class 0.000 description 1
- OTNKRKHMTFRPSK-UHFFFAOYSA-N barium;octadecanoic acid Chemical compound [Ba].CCCCCCCCCCCCCCCCCC(O)=O OTNKRKHMTFRPSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- JGIATAMCQXIDNZ-UHFFFAOYSA-N calcium sulfide Chemical compound [Ca]=S JGIATAMCQXIDNZ-UHFFFAOYSA-N 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a method for detecting barium content in barium stearate via a precipitation method. The method comprises the steps of weighing the barium stearate accurately, titrating with a acid-base titration method, collecting precipitated barium sulfate, weighing the barium sulfate after being burned; and then calculating the barium content in the barium stearate. The method is simple and easy to operate. The detected barium content is accurate and reliable.
Description
Technical field
The present invention relates to a kind of method that detects barium content in the barium stearate, particularly a kind of precipitation method detect the method for barium content in the barium stearate.
Background technology
Barium stearate [Ba (C17H35COO) 2] claims again stearic acid barium, and is water insoluble, is dissolved in hot ethanol, meets mineral acid and then is decomposed into stearic acid and corresponding barium salt.Barium stearate is used for fast light, the heat-resisting stabilizing agent of PVC CABLE MATERIALS, the plastifier of rubber etc.Production procedure is, stearic acid is put people's reaction container immersion method heating and melting, then adds 30% caustic soda and carries out saponification, generates aqueous solution of sodium stearate.Then, under agitation add barium chloride solution, carry out replacement reaction, generate barium stearate and sodium chloride.After question response is complete, through filtration, washing, centrifuge dripping and heated-air drying, obtain barium stearate.Barium content detection in the barium stearate is according to HG2338-92 barium stearate (lightweight) chemical industry standard method, the assay method principle of barium content is, excess sulfuric acid and barium reaction with concentration known generate barium sulfate precipitate, with in the NaOH and behind the excessive sulfuric acid, measure the quality of the barium of working as with consume sulfuric acid phase.
Under market economy, the production technology of barium stearate is lack of standardization, and washing is unclean for the residue caustic soda in the barium stearate of generation, can consume the sulfuric acid amount of titration when detecting, and produces virtual barium content.Also have, used 30% caustic soda is impure, as contains calcium hydroxide, can produce calcium stearate, and the sulfuric acid reaction when calcium stearate and detection is produced calcium sulphate and stearic acid, and calcium sulfide is water-soluble, can consume the sulfuric acid amount of titration when detecting, and also can produce virtual barium content.Therefore, use HG2338-92 barium stearate (lightweight) chemical industry standard can't accurately detect real barium content in the barium stearate.The present invention accurately takes by weighing barium stearate, uses acid base titration, and the barium sulphate of collecting precipitation takes by weighing barium sulphate weight after the calcination, calculates the barium content in the barium stearate again, can accurately detect real barium content in the barium stearate.
Summary of the invention
The objective of the invention is to solve above-mentioned deficiency, provide a kind of precipitation method to detect the method for barium content in the barium stearate.
The technical scheme that realizes the object of the invention is: a kind of precipitation method detect the method for barium content in the barium stearate, accurately take by weighing barium stearate, use acid base titration, and the barium sulphate of collecting precipitation takes by weighing barium sulphate weight after the calcination, calculate the barium content in the barium stearate again.
The above-mentioned precipitation method detect the method for barium content in the barium stearate, it is characterized in that: said method comprising the steps of:
(1) takes by weighing a certain amount of barium stearate clean reactor of packing into, the weight AKg of record barium stearate;
(2) in above-mentioned reactor, add the sulfuric acid of excessive concentration known, stirring reaction 0.5-2 hour, generate barium sulfate precipitate;
(3) drip NaOH to above-mentioned reacted solution, the excessive sulfuric acid that neutralizes is until the pH value is 7.0;
(4) go out barium sulfate precipitate with Filter paper filtering, barium sulfate precipitate is put into 700 ℃ of calcinings of horse expense stove 1-2 hour together with filter paper, the pure barium sulphate of the remainder after the weighing burning records the weight BKg of pure barium sulphate;
(5) calculate the * 100% of the content of barium in the barium stearate=(137.33B/233.39A).
The present invention has positive effect:
(1) method of the present invention is simple, and is easy to operate; (2) content of the barium sulphate measured of method of the present invention accurately, reliable.
Embodiment
(embodiment 1)
Accurately take by weighing 1g (being accurate to 0.0001g) barium stearate, put into clean reactor, excess sulfuric acid with concentration known, stirring reaction 0.5 hour generates barium sulfate precipitate with barium reaction in the barium stearate, with in the NaOH and after excessive sulfuric acid to pH value is 7, barium sulphate and the stearic acid that separates with the Filter paper filtering precipitation, filtrate in the filter paper is put into 700 ℃ of calcinings of horse expense stove together, filter paper is removed in burning, water, stearic acid 1 hour, the remaining barium sulphate 0.3412g that accurately weighs after the burning calculates the * 100%=20.08% of the content that barium in the barium sulphate accounts for barium stearate=(137.33*0.3412/233.39*1.0000).
(embodiment 2)
Accurately take by weighing 10g (being accurate to 0.0001g) barium stearate, put into clean reactor, excess sulfuric acid with concentration known, stirring reaction 1 hour generates barium sulfate precipitate with barium reaction in the barium stearate, with in the NaOH and after excessive sulfuric acid to pH value is 7, barium sulphate and the stearic acid that separates with the Filter paper filtering precipitation, filtrate in the filter paper is put into 700 ℃ of calcinings of horse expense stove together, filter paper is removed in burning, water, stearic acid 1.5 hours, the remaining barium sulphate 3.4452g that accurately weighs after the burning calculates the * 100%=20.27% of the content that barium in the barium sulphate accounts for barium stearate=(137.33*3.4452/233.39*10.0000).
(embodiment 3)
Accurately take by weighing 10g (being accurate to 0.0001g) barium stearate, put into clean reactor, excess sulfuric acid with concentration known, stirring reaction 2 hours generates barium sulfate precipitate with barium reaction in the barium stearate, with in the NaOH and after excessive sulfuric acid to pH value is 7, barium sulphate and the stearic acid that separates with the Filter paper filtering precipitation, filtrate in the filter paper is put into 700 ℃ of calcinings of horse expense stove together, filter paper is removed in burning, water, stearic acid 2 hours, the remaining barium sulphate 3.4326g that accurately weighs after the burning calculates the * 100%=20.19% of the content that barium in the barium sulphate accounts for barium stearate=(137.33*3.4326/233.39*10.0000).
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. the precipitation method detect the method for barium content in the barium stearate, and it is characterized in that: accurately take by weighing barium stearate, use acid base titration, the barium sulphate of collecting precipitation takes by weighing barium sulphate weight after the calcination, calculates the barium content in the barium stearate again.
2. the described precipitation method detect the method for barium content in the barium stearate according to claim 1, it is characterized in that: said method comprising the steps of:
(1) takes by weighing a certain amount of barium stearate clean reactor of packing into, the weight AKg of record barium stearate;
(2) in above-mentioned reactor, add the sulfuric acid of excessive concentration known, stirring reaction 0.5-2 hour, generate barium sulfate precipitate;
(3) drip NaOH to above-mentioned reacted solution, the excessive sulfuric acid that neutralizes is until the pH value is 7;
(4) go out barium sulfate precipitate with Filter paper filtering, barium sulfate precipitate is put into 700 ℃ of calcinings of horse expense stove 1-2 hour together with filter paper, the pure barium sulphate of the remainder after the weighing burning records the weight BKg of pure barium sulphate;
(5) calculate the * 100% of the content of barium in the barium stearate=(137B/233A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102605912A CN102980829A (en) | 2011-09-05 | 2011-09-05 | Method for detecting barium content in barium stearate via precipitation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102605912A CN102980829A (en) | 2011-09-05 | 2011-09-05 | Method for detecting barium content in barium stearate via precipitation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102980829A true CN102980829A (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102605912A Pending CN102980829A (en) | 2011-09-05 | 2011-09-05 | Method for detecting barium content in barium stearate via precipitation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102980829A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512823A (en) * | 2013-09-22 | 2014-01-15 | 南通新邦化工科技有限公司 | Content measurement method of barium in non-standard barium stearate |
| CN103698246A (en) * | 2013-12-11 | 2014-04-02 | 甘肃大禹节水集团股份有限公司 | Method for measuring migration loss of plasticizer in high impact PVC (polyvinyl chloride) pipe material |
| CN104390882A (en) * | 2014-12-10 | 2015-03-04 | 内蒙古包钢钢联股份有限公司 | Method for determining content of barium in silicon calcium barium in primary sedimentation |
| CN109932275A (en) * | 2019-04-17 | 2019-06-25 | 成都虹波钼业有限责任公司 | The detection method of sulfate radical content in a kind of molybdenum base solution |
-
2011
- 2011-09-05 CN CN2011102605912A patent/CN102980829A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| 刘文: "硫酸钡沉淀重量法测定硅铝钡中钡含量", 《芜湖职业技术学院学报》 * |
| 李云巧等: "重量分析法测定溶液中钡含量的不确定度评定", 《环境科学与技术》 * |
| 魏良璟等: "《中华人民共和国化工行业标准 HG2338-92 硬脂酸钡(轻质)》", 1 July 1993 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512823A (en) * | 2013-09-22 | 2014-01-15 | 南通新邦化工科技有限公司 | Content measurement method of barium in non-standard barium stearate |
| CN103512823B (en) * | 2013-09-22 | 2016-04-20 | 南通新邦化工科技有限公司 | The detection method of barium content in a kind of nonstandard barium stearate |
| CN103698246A (en) * | 2013-12-11 | 2014-04-02 | 甘肃大禹节水集团股份有限公司 | Method for measuring migration loss of plasticizer in high impact PVC (polyvinyl chloride) pipe material |
| CN104390882A (en) * | 2014-12-10 | 2015-03-04 | 内蒙古包钢钢联股份有限公司 | Method for determining content of barium in silicon calcium barium in primary sedimentation |
| CN109932275A (en) * | 2019-04-17 | 2019-06-25 | 成都虹波钼业有限责任公司 | The detection method of sulfate radical content in a kind of molybdenum base solution |
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Application publication date: 20130320 |