SN/T 4587-2016 English PDFUS$689.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. SN/T 4587-2016: Determination methods of total content of cis-2-butenedioic acid and cis-2-butenedioic anhydride in foods for export Status: Valid
Basic dataStandard ID: SN/T 4587-2016 (SN/T4587-2016)Description (Translated English): Determination methods of total content of cis-2-butenedioic acid and cis-2-butenedioic anhydride in foods for export Sector / Industry: Commodity Inspection Standard (Recommended) Classification of Chinese Standard: X04 Word Count Estimation: 30,370 Date of Issue: 2016-08-23 Date of Implementation: 2017-03-01 Regulation (derived from): State-Quality-Inspection-Certification (2016)438 Issuing agency(ies): General Administration of Customs SN/T 4587-2016: Determination methods of total content of cis-2-butenedioic acid and cis-2-butenedioic anhydride in foods for export---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. Determination methods of total content of cis-2-butenedioic acid and cis-2-butenedioic anhydride in foods for export China's entry-exit inspection and quarantine industry standards Export foods of maleic acid and Determination of the total amount of maleic anhydride Published on.2016-08-23 2017-03-01 Implementation China The State Administration of Quality Supervision, Inspection and Quarantine issued ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. Publication of this document The agency does not assume responsibility for identifying these patents. This standard is proposed and managed by the National Certification and Accreditation Regulatory Commission. This standard was drafted by the People's Republic of China. Guangxi Entry-Exit Inspection and Quarantine Bureau, China Academy of Inspection and Quarantine, Chinese People's Commune China Xiamen Entry-Exit Inspection and Quarantine Bureau, Hunan Academy of Inspection and Quarantine. The main drafters of this standard. Wu Yujie, Sun Li, Lu Chunqiu, Jiang Pingping, Zeng Qi, Luo Zhaofei, Li Yong, Cai Xiangyu, Zhao Guangying, Zhang Chao, Huang Zhiqiang, Liu Junyi, Liu Zhengcai, Xu Dunming. Export foods of maleic acid and Determination of the total amount of maleic anhydride1 ScopeThis standard specifies the method for the determination of the total amount of maleic acid and maleic anhydride in foods. The first method of this standard is applicable to the determination of the total amount of maleic acid and maleic anhydride in starch and starch products. The second method of this standard is applicable to the determination of the total amount of maleic anhydride and maleic anhydride in starch, vermicelli, and powdered circles.2 Normative referencesThe following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 6682 Analysis Laboratory Water Specifications and Test Methods3 sample preparation3.1 Preparation of Samples Starch sample. sampled by quartering method and set aside. Samples of dried starch products. crushed into powder, spare; wet starch product samples. crushed Evenly, spare. 3.2 Sample preservation Samples of starch and dried starch products were stored at room temperature and samples of wet starch products were stored under refrigeration. In the preservation process, the sample should be protected from contamination Dyes or changes in the residual content of the analyte. First method gas chromatography-mass spectrometry4 Method summaryThe samples were extracted with methanol and the extracts were methylated, detected by gas chromatography-mass spectrometry, and quantified by external standard method.5 Reagents and materialsUnless otherwise stated, all reagents used were of analytical grade, and water was tertiary water according to GB/T 6682. 5.1 Ethyl acetate (CH3COOCH2CH3). chromatographically pure. 5.2 Methanol (CH3OH). Chromatographically pure. 5.3 concentrated sulfuric acid. purity ≥98%. 5.4 saturated sodium chloride solution. 5.5 Standard. Maleic anhydride (CAS No.. 108-31-6), purity ≥98%; maleic acid (CAS No.. 110-16-7), purity ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of SN/T 4587-2016_English be delivered?Answer: Upon your order, we will start to translate SN/T 4587-2016_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of SN/T 4587-2016_English with my colleagues?Answer: Yes. The purchased PDF of SN/T 4587-2016_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. 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