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GB/T 34822-2017 English PDF

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GB/T 34822-2017: Determination of formaldehyde in cosmetics -- High-performance liquid chromatography
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PDF similar to GB/T 34822-2017


Standard similar to GB/T 34822-2017

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Basic data

Standard ID GB/T 34822-2017 (GB/T34822-2017)
Description (Translated English) Determination of formaldehyde in cosmetics -- High-performance liquid chromatography
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Y42
Classification of International Standard 71.100.70
Word Count Estimation 8,865
Date of Issue 2017-11-01
Date of Implementation 2018-05-01
Regulation (derived from) National Standard Announcement 2017 No. 29
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

GB/T 34822-2017: Determination of formaldehyde in cosmetics -- High-performance liquid chromatography


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Determination of formaldehyde in cosmetics-High-performance liquid chromatography ICS 71.100.70 Y42 National Standards of People's Republic of China Determination of formaldehyde content in cosmetics High performance liquid chromatography Posted.2017-11-01 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard proposed by the China Light Industry Federation. This standard by the National Spice cosmetics Standardization Technical Committee (SAC/TC257) centralized. This standard was drafted by Hangzhou Quality and Technical Supervision Testing Institute, Shanghai Daily Chemical Industry Institute, Hangzhou Special Equipment Testing Institute, Beijing Procter & Gamble Technology Co., Ltd. The main drafters of this standard. Shen Qun, Li Wei, Jiang Yan, Zheng Lei, Chu Xiaomin, Shen Min, Hu Jiangying, Luo Youfu, Lin Weijie. Determination of formaldehyde content in cosmetics High performance liquid chromatography

1 Scope

This standard specifies the determination of free formaldehyde in cosmetics by high performance liquid chromatography. This standard applies to the determination of free formaldehyde in cosmetics. This standard for cosmetics free formaldehyde detection limit of 0.00015%, the limit of quantification of 0.0005%.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6682 analytical laboratory water specifications and test methods

3 principle

Cosmetics samples were solvent dispersed, ultrasonic extraction, after centrifugation, the formaldehyde dissolved in the aqueous phase was separated by liquid chromatography, post-column derivatization The apparatus reacted with acetylacetone to generate 3,5-diacetyl-1,4-dihydropaluridine, detected by fluorescence detector, characterized by retention time, external standard method Quantitative.

4 Reagents and materials

Unless otherwise indicated, all reagents are of analytical grade, water is a water GB/T 6682 regulations. 4.1 anhydrous ammonium acetate. 4.2 glacial acetic acid. 4.3 Acetylacetone. After the distillation at 4 ℃ sealed dark storage, can be stored for a month. 4.4 anhydrous sodium hydrogen phosphate purity of not less than 98%. 4.5 Phosphate (≥85%). 4.6 Dichloromethane. 4.7 Butyl acetate. 4.8 Formaldehyde .37% ~ 40%. Formaldehyde CAS number, English name, molecular formula, relative molecular mass see Appendix A of Table A.1. 4.9 0.002mol/L hydrochloric acid solution. Measure 9mL hydrochloric acid (37%), water to volume 1L, and then take this 0.1mol/L hydrochloric acid solution Dilute 50 times with water. 4.10 0.006mol/L disodium hydrogen phosphate solution Weigh 0.852g anhydrous sodium phosphate dibasic (4.4), dissolved in water and transferred to 1L volume The flask was rinsed with water and adjusted to pH = 2.1 with phosphoric acid (4.5) to serve as the mobile phase. 4.11 Derivatization reagent Weigh 62.5g of anhydrous ammonium acetate in 500mL beaker, add appropriate amount of water to dissolve, transfer to 1L volumetric flask. Pipette 7.5mL glacial acetic acid and 5.0mL acetylacetone, with water volume. The derivatization reagent needs to be sealed and protected from light and stored at 25 ℃ For 4 weeks. Note. For each formulation of derivatization reagent, calibration of the standard curve with formaldehyde standard solution is required.

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