GB/T 42985-2023 English PDFUS$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 42985-2023: Method for determining the bio-based content of bio-based foam Status: Valid
Basic dataStandard ID: GB/T 42985-2023 (GB/T42985-2023)Description (Translated English): Method for determining the bio-based content of bio-based foam Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: B72 Classification of International Standard: 65.050 Word Count Estimation: 10,15 Date of Issue: 2023-09-07 Date of Implementation: 2024-04-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 42985-2023: Method for determining the bio-based content of bio-based foam---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.ICS 65.050 CCSB72 National Standards of People's Republic of China Method for detecting biobased content in biomass-based foam materials Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee Table of contentsPrefaceⅠ 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Principle 1 5 reagents or materials 1 6 Instruments and Equipment 2 7 Test Step 2 Appendix A (informative) Benzene synthesis device Figure 4 Appendix B (Normative) Step 5 for synthesizing benzene from biomass-based foam samples Reference 6ForewordThis document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed and managed by the National Forestry and Grassland Administration. This document was drafted by. Forest Products Chemical Industry Research Institute, Chinese Academy of Forestry Sciences. The main drafters of this document. Tan Weihong, Zhang Meng, Ma Yan, Wang Hongxiao, Deng Kunming, Shen Juanzhang, Dai Yan, Cai Yanyan, Tong Yajuan, and Huang Haitao. Method for detecting biobased content in biomass-based foam materials1 ScopeThis document describes a method for the detection of biobased content in biomass-based foam materials. This document is applicable to the testing of biomass-based foam materials.2 Normative reference documentsThe contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 6682 Specifications and test methods for water used in analytical laboratories3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 biomass-based foambio-basedfoam Foam materials are produced by processing biomass raw materials or partially replacing petrochemical raw materials. 3.2 moderncarbon moderncarbon Modern carbon. Note. The 1959 International Conference confirmed that oxalic acid (SRM4990b) formulated by the American National Bureau of Standards was used as the standard sample of modern carbon, and its 1950 release 95% of the radioactive activity is used as the standard radioactive activity of modern carbon. [Source. GB/T 29649-2013,3.3] 3.3 bio-basedcontentbio-basedcontent The percentage of the ratio of the organic carbon radioactivity per gram of the sample to the organic carbon radioactivity per gram of the modern carbon reference material, expressed in the sample Modern organic carbon derived from renewable resources as a percentage of total organic carbon.4 PrinciplesUnder certain conditions, the organic carbon in the biomass-based foam sample is converted into carbon dioxide, and then the generated carbon dioxide is converted into ethyl alcohol. Alkyne is then converted into benzene, a scintillator is added, and the 14C radioactive activity is measured using the liquid scintillation method, and is compared with the 14C radioactive activity of the reference material. The degree is compared to calculate the biobased content.5 reagents or materials5.1 Deionized water or double distilled water, GB/T 6682, level three. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 42985-2023_English be delivered?Answer: Upon your order, we will start to translate GB/T 42985-2023_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 42985-2023_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 42985-2023_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. 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