GB 1886.347-2021 PDF EnglishUS$85.00 · In stock · Download in 9 seconds
GB 1886.347-2021: National food safety standard - Food additives -4-amino-5,6-dimethylthieno(2,3-d)pyrimidin-2(1H)-one hydrochloride Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB 1886.347-2021: National food safety standard - Food additives -4-amino-5,6-dimethylthieno(2,3-d)pyrimidin-2(1H)-one hydrochloride---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB1886.347-2021 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA National food safety standard - Food additives - 4- amino-5,6-dimethylthieno(2,3-d)pyrimidin-2(1H)-one hydrochloride 啶-2(1H)-酮盐酸盐 ISSUED ON: FEBRUARY 22, 2021 IMPLEMENTED ON: AUGUST 22, 2021 Issued by: National Health Commission of PRC; State Administration for Market Regulation. Table of Contents1 Scope ... 3 2 Chemical name, molecular formula, structural formula, relative molecular mass ... 3 3 Technical requirements ... 3 Appendix A Determination of the content of 4-amino-5,6-dimethylthieno(2,3- d)pyrimidin-2(1H)-one hydrochloride ... 5 National food safety standard - Food additives - 4- amino-5,6-dimethylthieno(2,3-d)pyrimidin-2(1H)-one hydrochloride1 ScopeThis standard is applicable to food additives, 4-amino-5,6-dimethylthieno(2,3- d)pyrimidin-2(1H)-one hydrochloride, which are produced through chemical reaction, by the raw materials of malononitrile, 3-mercapto-2-butanone, etc. 2 Chemical name, molecular formula, structural formula, relative molecular mass 2.1 Chemical name 4-amino-5,6-dimethylthieno(2,3-d)pyrimidin-2(1H)-one hydrochloride 2.2 Molecular formula C8H9N3OS·HCl 2.3 Structural formula 2.4 Relative molecular mass 231.7 (According to 2018 international relative atomic mass)3 Technical requirements3.1 Sensory requirementsAppendix ADetermination of the content of 4-amino-5,6-dimethylthieno(2,3- d)pyrimidin-2(1H)-one hydrochloride A.1 Reagents and materials A.1.1 Trifluoroacetic acid: Purity ≥ 98%. A.1.1.1 The 0.1% trifluoroacetic acid solution: Pipette 1.00 mL of trifluoroacetic acid (A.1.1). Add it to a 1000 mL volumetric flask. Add water (A.1.3) to dilute it to the mark. Shake well. A.1.1.2 The 0.05% trifluoroacetic acid solution: Pipette 0.50 mL of trifluoroacetic acid (A.1.1). Add it to a 1000 mL volumetric flask. Add water (A.1.3) to dilute it to the mark. Shake well. A.1.2 Acetonitrile: Chromatographically pure. A.1.3 Water: Grade 1 water as specified in GB/T 6682. A.1.4 Control product of 4-amino-5,6-dimethylthieno(2,3-d)pyrimidin-2(1H)-one hydrochloride: Purity ≥ 99.0%. A.2 Instrument and equipment Ultra-high performance liquid chromatograph: Equipped with a diode array detector. A.3 Reference chromatographic conditions A.3.1 Chromatographic column: C18 liquid chromatographic column, which has a length of 100 mm, an inner diameter of 4.6 mm, a particle size of 3.5 μm; OR other equivalent chromatographic column. A.3.2 Mobile phase: Composed of 0.1% trifluoroacetic acid solution (A.1.1.1) and acetonitrile (A.1.2), in a volume ratio of 95:5. A.3.3 Column temperature: 30 °C. A.3.4 Flow rate: 1.0 mL/min. A.3.5 Injection volume: 1 μL. A.3.6 Detection wavelength: 245 nm. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB 1886.347-2021 be delivered?Answer: The full copy PDF of English version of GB 1886.347-2021 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB 1886.347-2021_English with my colleagues?Answer: Yes. 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