GB/T 4499-2016 English PDFUS$199.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 4499-2016: Rubber, vulcanized -- Determination of anti-degradants -- Thin layer chromatographic method Status: Valid GB/T 4499: Historical versions
Basic dataStandard 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83.060 Word Count Estimation: 10,140 Date of Issue: 2016-10-13 Date of Implementation: 2017-05-01 Older Standard (superseded by this standard): GB/T 4499-1997 Regulation (derived from): National Standard Notice No.1716 of 2016 Issuing agency(ies): General Administration of Quality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 ForewordThis 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 ScopeThis 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 documentsThe 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 extract3 principleIn 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 reagent4.1 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. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 4499-2016_English be delivered?Answer: Upon your order, we will start to translate GB/T 4499-2016_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 4499-2016_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 4499-2016_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 4499-2016?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4499-2016 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
