GB/T 32118-2015 English PDFUS$129.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 32118-2015: Determination of formaldehyde in toothpaste -- High performance liquid chromatography Status: Valid
Basic dataStandard ID: GB/T 32118-2015 (GB/T32118-2015)Description (Translated English): Determination of formaldehyde in toothpaste -- High performance liquid chromatography Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Y43 Classification of International Standard: 71.100.40 Word Count Estimation: 6,695 Date of Issue: 2015-10-09 Date of Implementation: 2016-05-01 Quoted Standard: GB/T 6682 Regulation (derived from): National Standard Announcement 2015 No.31 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 formaldehyde content of toothpaste Determination by High Performance Liquid Chromatography. This Standard applies to toothpaste Determination of formaldehyde added, does not apply to other toothpaste products containing formaldehyde release agent. GB/T 32118-2015: Determination of formaldehyde in toothpaste -- High performance liquid chromatography---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. (Toothpaste formaldehyde content by HPLC) ICS 71.100.40 Y43 National Standards of People's Republic of China Toothpaste formaldehyde content by HPLC Issued on. 2015-10-09 2016-05-01 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 National Light Industry Council. The standard oral care products by the National Technical Committee of Standardization Technical Committee toothpaste (SAC/TC492/SC1) centralized. This standard was drafted. Shanghai Daily Chemical Co. Maxam. The main drafters of this standard. Chenjian Fen, Shi Lei descent. Toothpaste formaldehyde content by HPLC1 ScopeThis standard specifies the formaldehyde content of toothpaste Determination by HPLC. This standard applies to the determination of toothpaste added formaldehyde, toothpaste does not apply to other products containing formaldehyde release agent.2 Normative referencesThe following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Laboratory use specifications and test methods GB/T 6682 Analysis Principle 3 Dissolved toothpaste with water, and separated by centrifugation, the supernatant was 2,4 dinitrophenylhydrazine derivatization, reaction product under heating conditions To formaldehyde derivatives 2,4 Dinitrophenylhydrozones by high performance liquid chromatography with UV detection was measured against a standard curve calculation Formaldehyde content in the sample. Formaldehyde with 2,4-dinitrophenylhydrazine reaction of 2,4-dinitrophenyl hydrazone reaction formula shown in Fig. Figure 1 derivatized formaldehyde reaction formula4 Reagents and materialsUnless otherwise indicated, all reagents superior grade of pure water as a water GB/T 6682 regulations. 4.1 acetonitrile. chromatography. 4.2 Formaldehyde standard solution (10.0mg/mL). ampoules package, placed above 10 ℃ to save, when used with the temperature balance, shake uniform, playing After opening recommend disposable, or standard solution was transferred to a brown bottle was sealed and stored at above 10 ℃. 4.3 glacial acetic acid. AR. 4.4 Sodium acetate. AR. 4.5 2,4-dinitrophenylhydrazine. Purity ≥99%. 4.6 acetic acid - sodium acetate buffer solution (pH = 5.0). Weigh 2.64g of sodium acetate to dissolve the amount of water, was added 1.0mL of glacial acetic acid, add water ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 32118-2015_English be delivered?Answer: Upon your order, we will start to translate GB/T 32118-2015_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 32118-2015_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 32118-2015_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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