GB/T 32093-2015 English PDF

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GB/T 32093-2015: Determination of sodium iodate in cosmetics -- Ion chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 32093-2015	239	Add to Cart	3 days	Determination of sodium iodate in cosmetics -- Ion chromatography	Valid

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Basic data

Standard ID: GB/T 32093-2015 (GB/T32093-2015)
Description (Translated English): Determination of sodium iodate in cosmetics -- Ion chromatography
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y42
Classification of International Standard: 71.100.70
Word Count Estimation: 11,143
Date of Issue: 2015-10-09
Date of Implementation: 2016-05-01
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 ion chromatographic method of sodium iodide in cosmetics. This Standard applies to creams, lotions, liquid cosmetics in the determination of sodium iodate. This Standard method detection limit of 0.000 05% limit of quantification was 0.000 2%.

GB/T 32093-2015: Determination of sodium iodate in cosmetics -- Ion 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.
(Cosmetics sodium iodide ion chromatography) ICS 71.100.70 Y42 National Standards of People's Republic of China Cosmetics sodium iodide ion chromatography 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

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China National Light Industry Council. This standard by the National Standardization Technical Committee of Fragrance Flavor and Cosmetic (SAC/TC257) centralized. This standard was drafted. Hangzhou Quality and Technical Supervision and Inspection Institute, China Institute of Metrology, the Shanghai Daily Chemical Industry Research Institute. The main drafters of this standard. Wang Hongqing, Xiao Hailong, Tu Haiyun, Lam Wai-kit, Pan Xiangrong, Yezi Hong, Du Xiaoting, Ruan Xiao Jiao, Ni Wei Hung, Tang Min, Jiang Netherlands, Chenmei Chun, Huang Jianping, Xia Zhongxing, SHEN Min.

Introduction

According to China "Hygienic Standard for Cosmetics", Cosmetics sodium leaching products is only allowed for the maximum allowable concentration of 0.1% It may not be sodium raw material as a cosmetic ingredient that is added to a non-leaching Cosmetics. If technically unavoidable sodium as a hetero When a non-leaching into the mass cosmetics, the non-leaching finished cosmetic products shall comply with the class "Hygienic Standard for Cosmetics" General requirements for cosmetics, namely Under normal and reasonably foreseeable conditions of use, should not cause harm to human health. The standard for measuring rinsed Cosmetics sodium iodide to provide detection methods, and to test whether the product meets "cosmetic hygiene regulations Fan "determination is made. Since China has yet to sodium leaching limit values \u200b\u200bin the non-class cosmetics regulations, the standards, only for non-leaching cosmetics Determination of sodium iodide to provide detection methods. Cosmetics sodium iodide ion chromatography

1 Scope

This standard specifies the ion chromatographic method of sodium iodide in cosmetics. This standard applies to creams, lotions, liquid cosmetics in the determination of sodium iodate. The standard method detection limit of 0.00005%, the limit of quantification of 0.0002%. Principle 2 Ultra-pure water with sodium extract samples after RP column (or rather who) purification by ion exchange chromatography - conductivity detector measurement, Paul Retention time qualitative, external standard.

3 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade water are ultrapure water resistivity of not less than 18.2MΩ · cm. 3.1 dichloromethane. 3.2 OnGuardⅡ RP column, 1.0mL, or equivalent performance of other columns. Before use, respectively with 5mL of methanol, 10 mL water activated, It can be used after placement 30min. 3.3 Standard. sodium, the purity of 99.4% -100.4%. Standard Substance CAS number, Chinese name, English name, INCI name, molecular Formula, relative molecular mass Table A.1. 3.4 standard stock solution (1000mg/L). Weigh accurately sodium 0.1g (accurate to 0.0001g), dissolved in water and dilute to 100mL, Dubbed 1000μg/mL standard stock solution, placed in a brown bottle stable at 4 ℃ for 6 months. 3.5 intermediate standard solution (100mg/L). standard stock solution Pipette 10.0mL, water volume to 100mL. Placed in a brown bottle 4 ℃ Save stable under two months. 3.6 standard series working solution. the use of forward take appropriate intermediate standard solution (3.5), diluted with water formulated to 0.05mg/L, 0.25mg/L, 0.5mg/L, 2.5mg/L, 5.0mg/L, 10.0mg/L, 25.0mg/L series of standard working solution.

4 instruments and equipment

4.1 ion chromatography, electrical conductivity detector. 4.2 ultrapure water meter. 4.3 high-speed centrifuge, speed not less than 6500r/min. 4.4 vortex mixers. 4.5 ultrasonic cleaner. 4.6 Analytical balance. The aqueous phase was 4.7 0.22μm microporous membrane. Note. All glassware is required before successively with 2mol/L potassium hydroxide and water were soaked 4h, then washed three times to five times with ultrapure water, dried spare. ......

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