GB/T 38592-2020 English PDFUS$149.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 38592-2020: Determination of 4,4′-methylene-bis (2-chloroaniline) in textile dyeing and finishing auxiliaries Status: Valid
Basic dataStandard ID: GB/T 38592-2020 (GB/T38592-2020)Description (Translated English): Determination of 4,4��-methylene-bis (2-chloroaniline) in textile dyeing and finishing auxiliaries Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G70 Classification of International Standard: 71.100.40 Word Count Estimation: 8,823 Date of Issue: 2020-03-31 Date of Implementation: 2021-02-01 Quoted Standard: GB/T 6682; GB/T 8170-2008 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration Summary: This standard specifies the principles, reagents or materials, equipment, test procedures, test data processing and determination of low levels of 4,4""-methylenebis(2-chloroaniline) (MOCA) in textile dyeing and finishing auxiliaries. limits, recoveries, precision, and test reports. This standard applies to the determination of 4,4""-methylenebis((2-chloroaniline) in textile dyeing and finishing auxiliaries. GB/T 38592-2020: Determination of 4,4′-methylene-bis (2-chloroaniline) in textile dyeing and finishing auxiliaries---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 4, 4′-methylene-bis (2-chloroaniline) in textile dyeing and finishing auxiliaries ICS 71.100.40 G70 National Standards of People's Republic of China 4,4'-methylene bis in textile dyeing and finishing auxiliary products Determination of (2-chloroaniline) 2020-03-31 release 2021-02-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Dyestuff Standardization Technical Committee (SAC/TC134). This standard was drafted by. Suzhou University, Zhejiang Academy of Inspection and Quarantine Science and Technology, Chuanhua Zhilian Co., Ltd., Suzhou University of Science and Technology Xue, Hangzhou Chuanhua Fine Chemical Co., Ltd. and Suzhou Environmental Monitoring Center of Jiangsu Province. The main drafters of this standard. Chen Guoqiang, Zhang Jue, Xie Weibin, Wang Xiangrong, Zhao Ting, Zhao Mei, Gu Haidong, Yu Lei, Yin Yanmin, Yuan Biyun, Chen Bajin, Chen Yingying. 4,4'-methylene bis in textile dyeing and finishing auxiliary products Determination of (2-chloroaniline) Warning --- Persons using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible safety issues question. It is the user's responsibility to take appropriate safety and health measures and to ensure compliance with the conditions prescribed by the relevant national regulations.1 ScopeThis standard specifies the principles, reagents or materials for the determination of 4,4'-methylenebis (2-chloroaniline) (MOCA) in textile dyeing and finishing auxiliary products. Instruments and equipment, test procedures, test data processing and determination limits, recovery, precision and test reports. This standard applies to the determination of 4,4'-methylene bis (2-chloroaniline) in textile dyeing and finishing auxiliary products.2 Normative referencesThe following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document. GB/T 6682 Analysis laboratory specifications and test methods GB/T 8170-2008 Numerical Rounding Rules and Representation and Judgment of Limit Values3 PrincipleAfter the sample is dissolved in water, it is treated with anhydrous sodium sulfate and sodium chloride, and toluene is used as an extractant to extract 4,4'-methylenebis (2-chlorobenzene Amine), after high-speed centrifugation to remove the precipitated material, take the upper layer liquid for filtration and injection, and use a gas chromatography-triple quadrupole tandem mass spectrometer (GC- MS/MS) for determination and quantification by external standard method.4 Reagents or materialsUnless otherwise specified, only use reagents identified as analytically pure and tertiary water specified in GB/T 6682. 4.1 Toluene. 4.2 Anhydrous sodium sulfate. 4.3 Sodium chloride. 4.4 Standard product of 4,4'-methylenebis (2-chloroaniline) (CAS No. 101-14-4). purity ≥99.0% (mass fraction). 4.5 4,4'-methylene bis (2-chloroaniline) standard stock solution (1000mg/L). Weigh an appropriate amount of 4,4'-methylene bis (2-chloroaniline) standard Product (4.4), prepared with toluene (4.1) into a standard stock solution with a concentration of about 1000 mg/L. Note. The standard stock solution is stored in a brown bottle and stored at 0 ℃ ~ 4 ℃, the validity period is 1 month. 4.6 4,4'-methylene bis (2-chloroaniline) standard working solution. accurately transfer 4,4'-methylene bis (2-chloroaniline) standard stock solution with a pipette The liquid (4.5) is placed in a volumetric flask and diluted stepwise with toluene (4.1) to the desired concentration, such as 0.1 mg/L, 1 mg/L, 5 mg/L, 10 mg/L, 20mg/L. Note. The standard working solution is now ready for use, and can be formulated into other suitable concentrations as needed. ...... |
