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GB/T 4499-2016 English PDF

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GB/T 4499-2016: Rubber, vulcanized -- Determination of anti-degradants -- Thin layer chromatographic method
Status: Valid

GB/T 4499: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 4499-2016English199 Add to Cart 3 days [Need to translate] Rubber, vulcanized -- Determination of anti-degradants -- Thin layer chromatographic method Valid GB/T 4499-2016
GB/T 4499-1997English219 Add to Cart 2 days [Need to translate] Vulcanized rubber. Determination of antidegradant content. Thin layer chromatographic method Obsolete GB/T 4499-1997
GB/T 4499-1984EnglishRFQ ASK 3 days [Need to translate] Vulcanized rubber--Determination of antidegradant content--Thin layer chromatographic method Obsolete GB/T 4499-1984

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Basic data

Standard ID GB/T 4499-2016 (GB/T4499-2016)
Description (Translated English) Rubber, vulcanized -- Determination of anti-degradants -- Thin layer chromatographic method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G40
Classification of International Standard 83.060
Word Count Estimation 10,140
Date of Issue 2016-10-13
Date of Implementation 2017-05-01
Older Standard (superseded by this standard) GB/T 4499-1997
Regulation (derived from) National Standard Notice No.1716 of 2016
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 4499-2016: Rubber, vulcanized -- Determination of anti-degradants -- Thin layer chromatographic method


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Rubber, vulcanized - Determination of antidegradants - Thin layer chromatographic method ICS 83.060 G40 National Standards of People's Republic of China Replace GB/T 4499-1997 Rubber, vulcanized - Determination of antioxidants - Thin layer chromatography Rubber, vulcanized-Determination ofantidegradants- 2016-10-13 released 2017-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. The standard instead of GB/T 4499-1997 "vulcanized rubber in the determination of anti-aging agent thin layer chromatography." With GB/T 4499- 1997, the main technical changes are as follows. - a description of the "standards for the use of antioxidants used for qualitative testing" (see 4.6); - modified the description of the spot size (see 7.2.1,.1997, 7.2); - a description of the use of the developer (see 7.3); - a description of the post-deployment spot position (see 7.3); --- Added the requirement that "Rf retain two decimal places" (see 8.1.1,.1997, 8.1); --- Added part of the test report (see Chapter 10). This standard is proposed by the China Petroleum and Chemical Industry Association. This standard by the National Rubber and Rubber Products Standardization Technical Committee (SAC/TC35) centralized. The drafting unit of this standard. Xishuangbanna State Quality and Technical Supervision Comprehensive Testing Center, China National Petroleum Corporation Dushanzi stone Research Institute, Guangzhou South China Rubber Tire Co., Ltd., Beijing Rubber Industry Research and Design Institute, Shenyang Chemical School, Qingdao Icos New Materials Material Co., Ltd., Shuangqian Group Co., Ltd. The main drafters of this standard. Zheng Xiangqian, Sun Feng, Zhou Xiuliang, Fan Shanying, Rui Rui, Lin Qingju, Wu Xiuping, Yang Yinghua, Wang Wenxiang, Ding Xiaoying, Niu Huafeng, Zuo Jijiang. This standard replaced the previous version of the standard release. --- GB 4499-1984, GB/T 4499-1997. Rubber, vulcanized - Determination of antioxidants - Thin layer chromatography WARNING. Personnel using this standard should have practical experience in formal laboratory work. This standard does not address all possible security issues, It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.

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.

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