CN107389669A - A kind of dark oil anti-caking agent acid number content assaying method - Google Patents
A kind of dark oil anti-caking agent acid number content assaying method Download PDFInfo
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- CN107389669A CN107389669A CN201710481133.9A CN201710481133A CN107389669A CN 107389669 A CN107389669 A CN 107389669A CN 201710481133 A CN201710481133 A CN 201710481133A CN 107389669 A CN107389669 A CN 107389669A
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- caking agent
- potassium hydroxide
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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Abstract
The present invention relates to a kind of dark oil anti-caking agent acid number content assaying method, carry out according to the following steps：M grams of dark oil anti-caking agent is weighed to be placed in conical flask, measure the 80ml pure absolute ethyl alcohol of analysis, heating is until anti-caking agent is dissolved, add 20ml distilled water, fully shake up, add 3 drop 10g/L phenolphthalein to be titrated to red with standardized KOH solution in solution, and keep 30 seconds red not disappear, record potassium hydroxide consumption volume V1, blank assay, consumption potassium hydroxide volume V are according to the same terms0；Dark oil anti-caking agent acid number calculation formula=C1(V1‑V0) × 56.11/m, wherein C1For the concentration of the amount of standardized KOH material, V1、V0The volume of anti-caking agent consumption potassium hydroxide and the volume of blank consumption potassium hydroxide are respectively titrated, 56.11 be the molal weight of potassium hydroxide, and m is the quality of anti-caking agent.The present invention is applied to the analysis of various dark oil anti-caking agent acid number contents, and the discoloration of the method terminal is obvious, has the features such as easy to operate, quick, to reduce color error, experimental error.
Description
Technical field
The present invention relates to a kind of dark oil anti-caking agent acid number content assaying method
Background technology
As fertilizer requires more and more higher to anti-caking agent, the species of anti-caking agent is also progressively increasing, the anti-caking used at present
Agent mainly has three kinds of paste, oily and powdery.According to the improvement of the market demand and fertilizer production technology, dark oil anti-caking agent
Usage amount is also increasing, and to ensure the anti-caking effect of anti-caking agent, acid number content is an indispensable index, is being produced in batches
During, accurately determine acid number and important directive function also played to production,
Measure generally use with regard to current oil body anti-caking agent acid number is national standard analysis method (GB5530-85), should
Method can clearly judge terminal when being used for light oil body anti-caking agent by phenolphthalein indicator discoloration, and be used to determine dark oil
During body anti-caking agent acid number, due to the interference of anti-caking agent intrinsic colour, it is difficult to it was observed that the discoloration of indicator, can not judge titration eventually
Point.
The content of the invention
The defects of purpose of the present invention is in order to overcome above-mentioned prior art there are problems that and, and a kind of dark oil is provided and prevented
Agent acid number content assaying method is tied, method provided by the invention goes for point of various dark oil anti-caking agent acid number contents
Analysis.Compared with existing anti-caking agent acid number analysis method, there is terminal discoloration substantially, it is easy to operate, quick, reduce color and miss
The features such as difference, experimental error.
The present invention is realized by following technology：
A kind of dark oil anti-caking agent acid number content assaying method, it is characterised in that carry out according to the following steps：Weigh m grams of depth
Color oil body anti-caking agent is placed in conical flask, measures the 80ml pure absolute ethyl alcohol of analysis, and heating is completely dissolved up to anti-caking agent, is added
20ml distilled water, fully shakes up, and now, solution colour substantially shoals, and forms emulsion, adds 3 drop 10g/L phenolphthalein in solution
In, red is titrated to standardized KOH solution, and keep 30 seconds red not disappear, record potassium hydroxide consumption volume V1,
Blank assay, consumption potassium hydroxide volume V are according to identical condition0；
Dark oil anti-caking agent acid number calculation formula=C1(V1-V0) × 56.11/m, wherein C1For standardized KOH
The concentration of the amount of material, V1、V0Respectively titrate the volume of anti-caking agent consumption potassium hydroxide and the body of blank consumption potassium hydroxide
Product, 56.11 be the molal weight of potassium hydroxide, and m is the quality of dark oil anti-caking agent.
The standardized KOH solution collocation method, 2.8g analysis pure cerium hydroxide potassium is weighed, adds 1000ml without dioxy
Change in carbon water, fully shake up rear standby produce.
The phenolphthalein indicator collocation method, weigh and produced in 1g phenolphthalein involvement 100ml ethanol solutions.
The method of the present invention goes for the measure of the acid number of dark oil anti-caking agent of the various raw materials containing acid number, has
Terminal discoloration is obvious, easy to operate, quick, the features such as reducing color error, experimental error.
Embodiment
With reference to embodiment, the invention will be further described, but does not limit the present invention.
Used in the present invention：Standardized KOH solution collocation method, 2.8g analysis pure cerium hydroxide potassium is weighed, adds 1000ml
In carbon dioxide-free water, rear standby produce fully is shaken up.The calibrated concentration of potassium hydroxide solution is：0.05262mol/L.
The phenolphthalein indicator collocation method, weigh and produced in 1g phenolphthalein involvement 100ml ethanol solutions.
Embodiment 1：Weigh the black oil anti-caking agent that acid number known to 0.4227g is 103.31mgKOH/g and be placed in 250ml cones
In shape bottle, the 80ml pure absolute ethyl alcohol of analysis is measured, until black oil anti-caking agent is completely dissolved, addition 20ml distills for heating
Water, fully shake up, now, solution substantially shoals, and forms emulsion, 3 drop 10g/L phenolphthalein is added, with 0.05262mol/L's
Standardized KOH solution is titrated to red, and keeps 30 seconds red not disappear, record potassium hydroxide consumption volume 14.92ml,
Blank assay is done according to identical condition, consumes potassium hydroxide volume 0.10ml, according to concentration of potassium hydroxide and consumption volume and sky
White consumer calculate the black oil anti-caking agent contained by acid number be 103.52mgKOH/g, error 0.21, experimental result is in mistake
In poor allowed band.
Embodiment 2：Weigh the black oil anti-caking agent that acid number known to 0.3216g is 103.31mgKOH/g and be placed in 250ml cones
In shape bottle, the 80ml pure absolute ethyl alcohol of analysis is measured, until black oil anti-caking agent is completely dissolved, addition 20ml distills for heating
Water, fully shake up, now, solution substantially shoals, and forms emulsion, 3 drop 10g/L phenolphthalein is added, with 0.05262mol/L's
Standardized KOH solution is titrated to red, and keeps 30 seconds red not disappear, record potassium hydroxide consumption volume 11.36ml,
Blank assay is done according to identical condition, consumes potassium hydroxide volume 0.10ml, according to concentration of potassium hydroxide and consumption volume and sky
White consumer calculate the black oil anti-caking agent contained by acid number be 103.37mgKOH/g, error 0.06, experimental result is in mistake
In poor allowed band.
Embodiment 3：Weigh the black oil anti-caking agent that acid number known to 0.3625g is 103.31mgKOH/g and be placed in 250ml cones
In shape bottle, the 80ml pure absolute ethyl alcohol of analysis is measured, until black oil anti-caking agent is completely dissolved, addition 20ml distills for heating
Water, fully shake up, now, solution substantially shoals, and forms emulsion, 3 drop 10g/L phenolphthalein is added, with 0.05262mol/L's
Standardized KOH solution is titrated to red, and keeps 30 seconds red not disappear, record potassium hydroxide consumption volume 12.80ml,
Blank assay is done according to identical condition, consumes potassium hydroxide volume 0.10ml, according to concentration of potassium hydroxide and consumption volume and sky
White consumer calculate the black oil anti-caking agent contained by acid number be 103.44mgKOH/g.Error is 0.13, and experimental result is by mistake
In poor allowed band.
Embodiment 4：Weigh the black oil anti-caking agent that acid number known to 0.3943 gram is 103.31mgKOH/g and be placed in 250ml
In conical flask, the 80ml pure absolute ethyl alcohol of analysis is measured, until black oil anti-caking agent is completely dissolved, addition 20ml distills for heating
Water, fully shake up, now, solution substantially shoals, and forms emulsion, 3 drop 10g/L phenolphthalein is added, with 0.05262mol/L's
Standardized KOH solution is titrated to red, and keeps 30 seconds red not disappear, record potassium hydroxide consumption volume 13.92ml,
Blank assay is done according to identical condition, consumes potassium hydroxide volume 0.10ml, according to concentration of potassium hydroxide and consumption volume and sky
White consumer calculate the black oil anti-caking agent contained by acid number be 103.48mgKOH/g.Error is 0.17, and experimental result is by mistake
In poor allowed band.
Claims (1)
1. a kind of dark oil anti-caking agent acid number content assaying method, it is characterised in that carry out according to the following steps：Weigh m grams of dark color
Oil body anti-caking agent is placed in conical flask, measures the 80ml pure absolute ethyl alcohol of analysis, until anti-caking agent is dissolved, addition 20ml steams for heating
Distilled water, fully shake up, add 3 drop 10g/L phenolphthalein in solution, be titrated to red with standardized KOH solution, and keep 30
Second red does not disappear, record potassium hydroxide consumption volume V1, blank assay, consumption potassium hydroxide volume V are according to identical condition0；
Dark oil anti-caking agent acid number calculation formula=C1(V1-V0) × 56.11/m, wherein C1For the material of standardized KOH
The concentration of amount, V1、V0The respectively volume of titration anti-caking agent consumption potassium hydroxide and the volume of blank consumption potassium hydroxide, 56.11
For the molal weight of potassium hydroxide, m is the quality of anti-caking agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481133.9A CN107389669A (en) | 2017-06-22 | 2017-06-22 | A kind of dark oil anti-caking agent acid number content assaying method |
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| CN201710481133.9A CN107389669A (en) | 2017-06-22 | 2017-06-22 | A kind of dark oil anti-caking agent acid number content assaying method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607877A (en) * | 2021-07-27 | 2021-11-05 | 威海拓展纤维有限公司 | Method for testing acid value of water-soluble resin |
| CN114414558A (en) * | 2021-12-20 | 2022-04-29 | 山东东岳未来氢能材料股份有限公司 | Method for measuring acid value content of aqueous fluorocarbon resin |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072900A (en) * | 2009-11-19 | 2011-05-25 | 上海宝钢工业检测公司 | Acid value measurement method for high-viscosity lubricating oil |
| CN103776825A (en) * | 2014-01-11 | 2014-05-07 | 河南工业大学 | Determining method of acid value of deep-color grease |
| CN104345055A (en) * | 2013-07-26 | 2015-02-11 | 丰益(上海)生物技术研发中心有限公司 | Mixed indicator, utilization and rapid detection method for grease acid value |
| CN106093290A (en) * | 2016-07-27 | 2016-11-09 | 湖北富邦科技股份有限公司 | A kind of qualitative determination method that anti-caking agent dispensing is the most correct |
-
2017
- 2017-06-22 CN CN201710481133.9A patent/CN107389669A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072900A (en) * | 2009-11-19 | 2011-05-25 | 上海宝钢工业检测公司 | Acid value measurement method for high-viscosity lubricating oil |
| CN104345055A (en) * | 2013-07-26 | 2015-02-11 | 丰益(上海)生物技术研发中心有限公司 | Mixed indicator, utilization and rapid detection method for grease acid value |
| CN103776825A (en) * | 2014-01-11 | 2014-05-07 | 河南工业大学 | Determining method of acid value of deep-color grease |
| CN106093290A (en) * | 2016-07-27 | 2016-11-09 | 湖北富邦科技股份有限公司 | A kind of qualitative determination method that anti-caking agent dispensing is the most correct |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607877A (en) * | 2021-07-27 | 2021-11-05 | 威海拓展纤维有限公司 | Method for testing acid value of water-soluble resin |
| CN114414558A (en) * | 2021-12-20 | 2022-04-29 | 山东东岳未来氢能材料股份有限公司 | Method for measuring acid value content of aqueous fluorocarbon resin |
| CN114414558B (en) * | 2021-12-20 | 2024-04-12 | 山东东岳未来氢能材料股份有限公司 | Method for measuring acid value content of water-based fluorocarbon resin |
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