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SN/T 1786-2006 PDF English

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SN/T 1786-2006: Determination of triclosan and triclocarban in cosmetics for import and export. Liquid chromatography method
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SN/T 1786-2006English199 Add to Cart 3 days [Need to translate] Determination of triclosan and triclocarban in cosmetics for import and export. Liquid chromatography method

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Basic data

Standard ID SN/T 1786-2006 (SN/T1786-2006)
Description (Translated English) Determination of triclosan and triclocarban in cosmetics for import and export. Liquid chromatography method
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard Y42
Classification of International Standard 71.100.70
Word Count Estimation 6,663
Date of Issue 2006-04-25
Date of Implementation 2006-11-15
Regulation (derived from) Industry Standard Notice 2006 No. 7 (No. 79 overall)
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the cosmetics (including toothpaste) triclosan and triclocarban liquid chromatographic method. This standard applies to cosmetics (including toothpaste) triclosan and triclocarban determination.

SN/T 1786-2006: Determination of triclosan and triclocarban in cosmetics for import and export. Liquid chromatography method




---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 triclosan and triclocarban in cosmetics for import and export.Liquid chromatography method People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard Determination of triclosan and triclocarban in imported and exported cosmetics Liquid chromatography Released on.2006-04-25 Implementation of.2006-11-15 People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

Appendix A of this standard is an informative annex. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted by the China Academy of Inspection and Quarantine. The main drafters of this standard. Bai Hua, Chen Wei, Hao Nan, Zhou Xin. This standard is the first industry standard for entry-exit inspection and quarantine. Determination of triclosan and triclocarban in imported and exported cosmetics Liquid chromatography

1 Scope

This standard specifies the liquid chromatographic method for determination of triclosan and triclocarban in cosmetics (including toothpaste). This standard applies to the determination of triclosan and triclocarban in cosmetics (including toothpaste).

2 Principle

Triclosan and triclocarban in cosmetics were extracted with methanol, and the extract was subjected to centrifugal filtration and then measured by high performance liquid chromatography. root According to its retention time qualitative, the external standard method is quantitative.

3 reagents and materials

Unless otherwise stated, the reagents used were of analytical grade and the water was either secondary deionized water or re-distilled. 3.1 Methanol. chromatographically pure. 3.2 Triclosan and triclocarban. purity ≥ 99%. 3.3 Triclosan and triclocarban standard stock solution. accurately weigh the appropriate amount of triclosan and triclocarban (accurate to 0.1mg), formulated with methanol Standard stock solutions at a concentration of 1000 μg/mL. Dilute to a standard working solution of the appropriate concentration with methanol as needed.

4 instruments

4.1 High performance liquid chromatograph with UV detector. 4.2 Microsampler, 10 μL. 4.3 Ultrasonic cleaner. 4.4 Centrifuge. 4.5 Solvent filter 4.6 0.45 μm filter.

5 Determination steps

5.1 Sample processing Weigh about 0.5g (accurate to 1mg) of the cosmetic sample, place it in a 50mL stoppered conical flask, add 15mL of methanol, and remove it in the ultrasonic wave. Ultrasonic extraction in the scrubber for 20 min, the extract was transferred to a 25 mL volumetric flask, diluted to the mark with methanol, and mixed. Take a part of the solution and put it away In the heart tube, centrifuge at 10000r/min for 10min, and the supernatant after centrifugation at 10000r/min is filtered through the membrane (4.6). The liquid is determined by liquid chromatography. 5.2 Determination 5.2.1 Chromatographic conditions 5.2.1.1 Column. C8 column, 250 mm × 4.6 mm (inside diameter), 5 μm (particle size), or equivalent. 5.2.1.2 Mobile phase. methanol + water (77 + 23). 5.2.1.3 Flow rate. 1.0 mL/min. 5.2.1.4 Detection wavelength. 281nm. 5.2.1.5 Column temperature. room temperature. ...

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