CN105911024A - Determination method of rosin refractive index - Google Patents
Determination method of rosin refractive index Download PDFInfo
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- CN105911024A CN105911024A CN201610234551.3A CN201610234551A CN105911024A CN 105911024 A CN105911024 A CN 105911024A CN 201610234551 A CN201610234551 A CN 201610234551A CN 105911024 A CN105911024 A CN 105911024A
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- rosin
- index
- refraction
- sample
- refractive index
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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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/4133—Refractometers, e.g. differential
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a determination method of rosin refractive index, and aims to provide a determination method characterized by fast refractive index detection, small labor intensity, and simple operation. The method employs an SD-0606T automatic refractive index tester to detect the rosin refractive index. The invention belongs to the technical field of chemical detection.
Description
Technical field
The present invention relates to the assay method of a kind of index of refraction, specifically, be the mensuration of a kind of rosin index of refraction
Method, belongs to technical field of chemical detection.
Background technology
Rosin is divided into gum rosin, wood rosin, Starex 3 kinds by its source.Gum rosin also referred to as loosens perfume (or spice), face
Look shallow, and acid number is big, and index of refraction is high；Wood rosin is not so good as gum rosin also known as steam distilled rosin, quality, and color is deep, acid
It is worth little, and easily crystallizes from some solvent；Starex is also known as toll oil rosin.Rosin is a kind of transparent, crisp
The solid natural resin of property, is more complicated mixture, by resin acid (abietic acid, pimaric acid), a small amount of fat
The compositions such as fat acid, rosin acid anhydrides and neutrals.Rosin be mainly composed of resin acid, account for about 90%, molecule
Formula is C19H29COOH, molecular weight 302.46.Resin acid is most representative rosin acid, belongs to unsaturation
Acid, containing conjugated double bond, absorbs ultraviolet light strongly, in atmosphere can autoxidation or induction rear oxidation.Pine
Fragrant outward appearance is faint yellow to light brown, has a vitreous luster, band turpentine oil smell, density 1.060～
1.085g/cm3.Fusing point 110～135 DEG C, index of refraction (ring and ball method) 72～76 DEG C, boiling point is about
300℃(0.67kPa).Vitrification point Tg-30～38 DEG C.Refractive index 1.5453.Flash-point (opening cup) 216 DEG C.
Burning-point about 480～500 DEG C.The most oxidizable.
Summary of the invention
For the problems referred to above, a kind of measurement cycle that the present invention provides is short, the rosin index of refraction that labour intensity is little
Assay method.
For solving above-mentioned technical problem, the technical scheme that the present invention provides is as follows:
The assay method of a kind of rosin index of refraction, the method is to use RX40 full-automatic refractometer method+SC30 automatic
Injector measures terebinthine index of refraction.
Further, the assay method of above-mentioned a kind of rosin index of refraction, the full-automatic refractometer of described RX40
It is to open RX40, SC30 instrument respectively that method+SC30 automatic sampler measures the method for terebinthine index of refraction,
Add appropriate 20ml sample, put into respectively on SC30 sample feeding device, press " YP " key, show according to screen
Showing that operation, instrument detect automatically, after having measured, sample can be recovered in sample bottle by instrument automatically,
Automated cleaning is also dried, and is ready for carrying out the detection of next sample.
Compared with existing, the technical scheme detection index of refraction that the present invention provides is easy and simple to handle, and quickly, reading is accurate
Really to after decimal point the 4th, and can be with the multiple sample of METHOD FOR CONTINUOUS DETERMINATION, the index of refraction that different temperatures requires,
Having bigger measurement temperature range, the cycle of measuring is short, and labour intensity is little, can preferably meet standard-required.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the claim of the present invention is described in further detail, but not
Constitute any limitation of the invention, any limited number of time done in the claims in the present invention protection domain
Amendment, still within the claims of the present invention.
Embodiment 1
The technical scheme that the present invention provides is that RX40 full-automatic refractometer method+SC30 automatic sampler measures turpentine
The index of refraction of oil, opens RX40, SC30 instrument respectively, and (about 20ml, sample can not have gas to add appropriate amount of sample
Bubble)), put into respectively on SC30 sample feeding device, press " YP " key, according to screen display operation, instrument
Device detects automatically, and after having measured, sample can be recovered in sample bottle by instrument automatically, automated cleaning
And be dried, it is ready for carrying out the detection (whole detection process takes 10min) of next sample.
This instrument detection index of refraction is easy and simple to handle, quickly, and after accuracy of reading to decimal point the 4th, and can
With the multiple sample of METHOD FOR CONTINUOUS DETERMINATION (SC30f sample feeding device can place 30, sample) simultaneously, different temperatures is wanted
Seek the index of refraction of (5-100 DEG C), there is bigger measurement scope (1.3200-1.7000), measure accurately
Degree is 0.0001.
And GB/T 6488-2008 " mensuration (20 DEG C) of liquid chemical product index of refraction " uses Abbe type
Refractometer is measured, and the method is water bath with thermostatic control to be connected with prism, make prism temperature control 20 ±
0.1℃.Correct Abbe refractometer by prescriptive procedure, and clean prism surface before the assay, drip at prism surface
Add the sample of few drops about 20 DEG C, immediately Guan Bi prism screwing, make sample uniformly, bubble-free being full of regards
, treat that prism temperature returns to 20 ± 0.1 DEG C.Regulation reflective mirror makes visual field become clear, and rotates reading handwheel, makes
Visual field occurs terminator, when terminator is at cross hairs center, quarter indicated on the right of prism visual field
Angle value is surveyed index of refraction value.
From above-mentioned contrast it can be seen that the method measurement cycle of present invention offer is short, labour intensity is little, can be more
Meet standard-required well.
The unspecified reagent of the present invention, parameter are all according to GB/T 8146-2003 " Test methods of rosin "
Involved method is carried out.
Claims (2)
1. the assay method of a rosin index of refraction, it is characterised in that the method is to use RX40 full-automatic
Refractometer method+SC30 automatic sampler measures terebinthine index of refraction.
The assay method of a kind of rosin index of refraction the most according to claim 1, it is characterised in that described
RX40 full-automatic refractometer method+SC30 automatic sampler measure terebinthine index of refraction method be to beat respectively
Drive RX40, SC30 instrument, add appropriate 20ml sample, put into respectively on SC30 sample feeding device, press " YP "
Key, according to screen display operation, instrument detects automatically, and after having measured, instrument can be automatic by sample
Being recovered in sample bottle, automated cleaning is also dried, and is ready for carrying out the detection of next sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610234551.3A CN105911024A (en) | 2016-04-14 | 2016-04-14 | Determination method of rosin refractive index |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610234551.3A CN105911024A (en) | 2016-04-14 | 2016-04-14 | Determination method of rosin refractive index |
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| CN105911024A true CN105911024A (en) | 2016-08-31 |
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| CN201610234551.3A Pending CN105911024A (en) | 2016-04-14 | 2016-04-14 | Determination method of rosin refractive index |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2302515Y (en) * | 1997-07-09 | 1998-12-30 | 中国人民解放军国防科学技术大学 | Gasoline label fast-detecting instrument |
| CN101153842A (en) * | 2006-09-25 | 2008-04-02 | 王林 | Ethyl alcohol instrument and calibration dividing method for its reticle |
| CN103630514A (en) * | 2013-11-05 | 2014-03-12 | 杭州陆恒生物科技有限公司 | Multifunctional digital display refractometer |
-
2016
- 2016-04-14 CN CN201610234551.3A patent/CN105911024A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2302515Y (en) * | 1997-07-09 | 1998-12-30 | 中国人民解放军国防科学技术大学 | Gasoline label fast-detecting instrument |
| CN101153842A (en) * | 2006-09-25 | 2008-04-02 | 王林 | Ethyl alcohol instrument and calibration dividing method for its reticle |
| CN103630514A (en) * | 2013-11-05 | 2014-03-12 | 杭州陆恒生物科技有限公司 | Multifunctional digital display refractometer |
Non-Patent Citations (2)
| Title |
|---|
| 冯文芳 主编: "《有机化学实验》", 28 February 2014, 华中科技大学出版社 * |
| 百度文库: "梅特勒RM40RM50折光仪操作说明书", 《HTTPS://WENKU.BAIDU.COM/VIEW/5390112E4B35EEFDC8D33349.HTML》 * |
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Application publication date: 20160831 |
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| RJ01 | Rejection of invention patent application after publication |