GB/T 4499-2016Rubber,vulcanized—Determination of antidegradants—Thin layer chromatographic method (English PDF)
硫化橡胶 防老剂的测定 薄层色谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 13, 2016
Implementation date
May 1, 2017
Scope
GB/T 4499-2016 is the English-translated version of 硫化橡胶 防老剂的测定 薄层色谱法.
GB/T 4499-2016 is the Chinese standard "Rubber,vulcanized—Determination of antidegradants—Thin layer chromatographic method". Its scope clause reads: This standard specifies the method for the determination of antioxidants in vulcanized rubber by thin layer chromatography.
This standard applies to the determination of vulcanized rubber or rubber in the antioxidant (aldehydes, ketones, secondary amines, p-phenylenediamines, bisphenols, Polyphenols and phosphates). Its clauses include normative reference documents; principle; reagent.
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Document preview — GB/T 4499-2016
National Standard of the People's Republic of China
- ICS
- 83.060
- Classification
- G 40
- Replacing
- GB/T 4499-1997
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 normative reference documents
- 3 principle
- 4 reagent
1 Scope
This standard specifies the method for the determination of antioxidants in vulcanized rubber by thin layer chromatography.
This standard applies to the determination of vulcanized rubber or rubber in the antioxidant (aldehydes, ketones, secondary amines, p-phenylenediamines, bisphenols,
Polyphenols and phosphates).
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 3516 Determination of rubber solvent extract
3 principle
In the process of thin layer chromatography, due to the different chemical structure of the antioxidant and its transformants, the difference in the distribution coefficient in the liquid-solid phase leads to
This achieves the purpose of separation. In the thin layer chromatography silica gel plate or silica gel coated glass plate on the spot, expand and color, and then by forming the map
In the color of the spots, shape and value of the value of Rf to determine the corresponding antioxidant.
4 reagent
4.1 General provisions
4.1.1
The solution used in this standard is expressed as "%" (except for special instructions).
4.1.2
When the solution appears turbidity, precipitation or color changes and other phenomena, should be re-prepared.
4.1.3
Unless otherwise stated, only the reagents identified as analytical reagents and distilled or deionized water or comparable purity are used in the analysis.
4.2 Development agent
4.2.1 concentrated ammonia
Mass fraction of 25% to 28%.
4.2.2 anhydrous ethanol - concentrated ammonia - toluene solution
Take 0.5 mL of absolute ethanol and 0.05 mL of concentrated aqueous ammonia, and add to 100 mL of toluene solution.
4.2.3 Acetone - concentrated ammonia - toluene solution
Take 10 mL of acetone and 0.2 mL of concentrated aqueous ammonia and add to 100 mL of toluene solution.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Similar standards
Editions of GB/T 4499
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4499-2016 | Rubber,vulcanized—Determination of antidegradants—Thin layer chromatographic method | current edition | Current |
| GB/T 4499-1997 | Rubber,vulcanized—Determination of antidegradants—Thin layer chromatographic method | previous edition | Superseded |
This page sells the current edition, GB/T 4499-2016. Earlier editions are listed for reference only.
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