GB/T 28486-2012 English PDFUS$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 28486-2012: Determination of dimethyl fumarate in mildew preventives Status: Valid
Basic dataStandard ID: GB/T 28486-2012 (GB/T28486-2012)Description (Translated English): Determination of dimethyl fumarate in mildew preventives Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G17 Classification of International Standard: 71.010 Word Count Estimation: 11,145 Regulation (derived from): National Standards Bulletin No. 13 of 2012 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 Summary: This standard specifies the content of dimethyl fumarate mildew detection methods. This standard applies to mildew Jing Zhongfu horse Dimethyl content. Gas chromatographic method for the concentration of the sample is not less than 500 mg/kg when measured GB/T 28486-2012: Determination of dimethyl fumarate in mildew preventives---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.ICS71-010 G17 National Standards of People's Republic of China Determination of the fungicide dimethyl fumarate content Issued on. 2012-11-01 2012-06-29 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordAccordance with the standards GB/T 1.1-2009 "Standardization Guide Part 1. Standard structure and preparation of" rules given in draft. This standard is proposed and managed by the China Certification and Accreditation Regulatory Commission. This standard was drafted. People's Republic of China Guangdong Entry-Exit Inspection and Quarantine Bureau, People's Republic of China Fujian Entry-Exit Inspection and Quarantine Bureau. The main drafters of this standard. Li Dan, ZHOU Ming-hui, Homocysteine \u200b\u200bon Liuying Feng, Zheng Jianguo, Di Cuiping, Yueda Lei, Jiang Xiaoli, Wangyun Yu. Determination of the fungicide dimethyl fumarate content1 ScopeThis standard specifies the method for detecting fungicide dimethyl fumarate content. This standard applies to the determination of dimethyl fumarate in fungicide content. Gas chromatography is suitable for measuring the sample concentration of not less than 500mg/kg when, gas chromatography - mass spectrometry method is suitable for low concentration samples To 500mg/kg, but not lower than the determination 0.1mg/kg when.2 Basic information of dimethyl fumarateDimethyl fumarate (Dimethylfumarate, CAS Registry Number. 624-49-7), its structural formula shown in Figure 1. Formula 1 dimethyl fumarate3 Method summary3.1 Gas Chromatography The ethyl acetate extract fungicide dimethyl fumarate dehydration, dimethyl succinate was added as an internal standard gas chromatography - flame from Determination of dimethyl fumarate, the internal standard quantum detector method. 3.2 Gas chromatography - mass spectrometry Extracted with ethyl acetate dehydration of fungicide dimethyl fumarate, dimethyl succinate was added as an internal standard, and the extract was concentrated and dilute Determination of dimethyl fumarate content of the internal standard quantitative mass spectrometry - after by gas chromatography.4 Reagents and materials4.1 ethyl acetate. analytical purity ≥99.5%, by 5Å molecular sieve dehydration process. 4.2 Dimethyl fumarate. standards, purity ≥99%. 4.3 dimethyl succinate. internal standard, the GC grade, purity ≥99%. 4.4 polytetrafluoroethylene (PTFE) porous membrane. pore size of 0.45μm. 4.5 standard stock solution. Weigh accurately a certain amount of dimethyl fumarate (4.2), with ethyl acetate (4.1) formulated into an appropriate concentration of the stock solution. 4.5.1 Standard stock solution a. Weigh accurately 5.0g of dimethyl fumarate (accurate to 0.1mg), with ethyl acetate volume to 25mL this. Concentration of 200g/L, at 0 ℃ ~ 4 ℃ sealed, valid for two months. 4.5.2 Standard stock solution b. Accurately weigh 0.10g dimethyl fumarate (accurate to 0.1mg), with ethyl acetate volume to 50mL this. Concentration of 2.00g/L, sealed and stored at 0 ℃ ~ 4 ℃, valid for one month. 4.5.3 Standard stock solution c. Take 2.50mL stock standard solution b (4.5.2), set the volume to 200mL with ethyl acetate, the solution concentration. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 28486-2012_English be delivered?Answer: Upon your order, we will start to translate GB/T 28486-2012_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 28486-2012_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 28486-2012_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. |
