SN/T 2446-2010 English PDF
Basic dataStandard ID: SN/T 2446-2010 (SN/T2446-2010)Description (Translated English): Determination of dimethyl fumarate in leather and leather products. Gas chromatography-mass method Sector / Industry: Commodity Inspection Standard (Recommended) Classification of Chinese Standard: Y45 Classification of International Standard: 59.140.01 Word Count Estimation: 6,693 Date of Issue: 2010-03-02 Date of Implementation: 2010-09-16 Regulation (derived from): State inspection recognized (2010) 98; industry standard filing Notice 2010 No. 5 (No. 125 overall) Issuing agency(ies): General Administration of Customs Summary: This standard specifies the leather and its products of dimethyl fumarate by gas chromatography/mass spectrometry. This standard applies to leather and its products Determination of dimethyl fumarate. SN/T 2446-2010: Determination of dimethyl fumarate in leather and leather products. Gas chromatography-mass 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. Determination of dimethyl fumarate in leather and leather products.Gas chromatography-mass method Exit inspection and quarantine industry standard book People's Republic of China Determination of dimethyl fumarate in leather and leather products Gas Chromatography/Mass Spectrometry Issued on. 2010-03-02 2010-09-16 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released ForewordAppendix A of this standard is an informative annex. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard by the People's Republic of China Guangdong SAIEC IQ drafting, People's Republic of China Fujian Exit Inspection and Quarantine, China PRC Shenzhen Entry-Exit Inspection and Quarantine of Jilin People's Republic of China participated in the drafting. The main drafters of this standard. Liu Yingfeng, Di Cuiping, Linbi Fen, ZHOU Ming-hui, Li Dan, Homocysteine on Zheng Jianguo, Zhang Zhihui, Yueda Lei, Xiaoda Hui, Li Bin, Jiang Xiaoli. This standard is the first release of the entry-exit inspection and quarantine industry standards. Determination of dimethyl fumarate in leather and leather products Gas Chromatography/Mass Spectrometry1 ScopeThis standard specifies the leather industry dimethyl fumarate by gas chromatography/mass spectrometry methods. This standard applies to leather and leather products - Determination of dimethyl fumarate.2 principle of the methodWith dehydrated ethyl acetate in a sample of dimethyl fumarate ultrasonic extraction, purification of the extract by gas chromatography/mass spectrometry Analyzer (GC/MS) and confirmed, external standard.3 Reagents and materialsUnless otherwise stated, use only reagents of analytical grade or higher purity. 3.1 ethyl acetate.? 5 by molecular sieve dehydration process. 3.2 Dimethyl fumarate standards. purity ≥98%. 3.3 neutral alumina column. 6mL/1000mg.4 instruments and equipment4.1 Gas chromatography/mass spectrometry (GC/MSD). with EI source. 4.2 rotary evaporator. 4.3 stoppered cylinders. 5mL. 4.4 ultrasonic extractor. 4.5 Syringe. 2mL. 4.6 stoppered conical flask. 100mL. 4.7 micro-injector. 10μL. 4.8 round-bottomed flask. 100mL. 4.9 plug volumetric flask. 25mL. 4.10 Electronic balance. a sense of the amount of 0.1mg. Step 5 Analysis 5.1 Preparation and processing of samples Take a representative sample of about 5mm × 5mm cut into small pieces, mix, weigh about 5.0g from the mixed sample (accurate to 0.01g), set In stoppered Erlenmeyer flask (4.6) in. At least two parallel determination of the same sample. Add to 30mL by 5? Molecular sieve dehydration ethyl acetate (3.1), The flask was sealed, shake vigorously, all immersed in a liquid sample, (4.4) in the ultrasonic extraction 10min ultrasonic extractor will extract Decanted into a round bottom flask (4.8); then dehydrated 20mL ethyl acetate (3.1) Repeat the above steps once the combined extracts. In a rotary evaporator On (4.2) and concentrated to near 3mL, transferred to a stoppered graduated cylinder (4.3), rinsed with a small amount of ethyl acetate dehydration round-bottomed flask, lotion incorporated into the cylinder with a stopper (4.3), and finally with ethyl acetate dehydration volume to 5.0mL. (4.5) of 2mL test solution using a syringe through neutral alumina column (3.3) Net After technology, gas chromatography/mass spectrometry. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of SN/T 2446-2010_English be delivered?Answer: Upon your order, we will start to translate SN/T 2446-2010_English as soon as possible, and keep you informed of the progress. The lead time is typically in 9 seconds (download/delivered in 9 seconds). The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of SN/T 2446-2010_English with my colleagues?Answer: Yes. The purchased PDF of SN/T 2446-2010_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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