GB/T 28190-2011 English PDFUS$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 28190-2011: Textiles -- Determination of dimethyl fumarate Status: Valid
Basic dataStandard ID: GB/T 28190-2011 (GB/T28190-2011)Description (Translated English): Textiles -- Determination of dimethyl fumarate Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: W04 Classification of International Standard: 59.080.01 Word Count Estimation: 7,718 Date of Issue: 2011-12-30 Date of Implementation: 2012-09-01 Regulation (derived from): Announcement of Newly Approved National Standards No. 23 of 2011 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 use of gas chromatography mass spectrometry (GC-MS) Determination of dimethyl fumarate in textiles content approach. This standard applies to all types of textile products. GB/T 28190-2011: Textiles -- Determination of dimethyl fumarate---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.Textiles. Determination of dimethyl fumarate ICS 59.080.01 W04 National Standards of People's Republic of China Textiles - Determination of dimethyl fumarate Issued on. 2011-12-30 2012-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Textile Industry Association. The standard basis by the National Textile Standards Technical Committee of Standardization Technical Committee (SAC/TC209/SC1) centralized. This standard was drafted. People's Republic of China, Shenzhen CIQ Zhejiang Inspection and Quarantine Institute of Science and Technology. The main drafters of this standard. Li Bin, Wu Gang, Liu Li, Zhao Hong Shan, Ren Cong, Wu Jingwu, Chen Meirong, Zhihong, Yu Shuyuan Song Bao Liang. Textiles - Determination of dimethyl fumarate Warning. Use of this standard shall have a person experiences regular laboratory work. This standard does not point out all possible security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.1 ScopeThis standard specifies the use of gas chromatography - mass spectrometry (GC-MS) Determination of textiles dimethyl fumarate content approach. This standard applies to all types of textile products. Principle 2 After the sample using ethyl acetate in dimethyl fumarate ultrasonic extraction, the extract was concentrated to volume and filtered using gas chromatography Spectrum - mass spectrometry (GC-MS) were determined and confirmed, external standard.3 Reagents and materials3.1 Unless otherwise indicated, the reagents used in the analysis were of analytical grade. 3.2 ethyl acetate. through 5A ° molecular sieve dehydration process. 5A ° molecular sieves in 500 ℃ muffle furnace burning 2h, until the furnace temperature dropped to 100 ℃ Hereinafter, fitted out into the rear of the dryer to cool anhydrous silica, at a ratio of 250g/500mL of ethyl acetate was added to just unsealed, 24h after standing aside. 3.3 dimethyl fumarate standards (dimethylfumarate, CAS Registry Number 624-49-7). Purity ≥99%. 3.4 standard stock solution. Weigh the appropriate amount of dimethyl fumarate standard (3.3), preparation of a concentration with ethyl acetate (3.2) as 1000mg/L of standard stock solution. NOTE. In the refrigerator at 4 ℃ under dark storage conditions, valid standard stock solution is 12 months. 3.5 Standard working solution. If necessary, the standard stock solution was diluted to the appropriate concentration of standard working solution with ethyl acetate (3.2). NOTE. In the refrigerator at 4 ℃ under dark storage conditions, valid standard working solution is 3 months.4 apparatus and equipment4.1 Gas chromatography - mass spectrometry. with EI source. 4.2 ultrasonic generator. operating frequency of 40kHz. 4.3 rotary evaporator. 4.4 Analytical balance, precision 0.0001g. 4.5 stoppered conical flask. 100mL. 4.6 round-bottomed flask. 250mL. 4.7 The organic phase filtration membranes. 0.45μm. Step 5 Analysis 5.1 Extraction Select a representative sample was cut to 5mm × 5mm or less, after which said mixing takes 2g, accurate to 0.01g, set stoppered Erlenmeyer flask ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 28190-2011_English be delivered?Answer: Upon your order, we will start to translate GB/T 28190-2011_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 28190-2011_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 28190-2011_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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