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GB/T 24800.11-2009 English PDF

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US$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 24800.11-2009: Determination of benzyl alcohol as antiseptic in cosmetics by gas chromatography method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 24800.11-2009	139	Add to Cart	3 days	Determination of benzyl alcohol as antiseptic in cosmetics by gas chromatography method	Valid

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Basic data

Standard ID: GB/T 24800.11-2009 (GB/T24800.11-2009)
Description (Translated English): Determination of benzyl alcohol as antiseptic in cosmetics by gas chromatography method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y42
Classification of International Standard: 71.100.70
Word Count Estimation: 6,612
Date of Issue: 2009-11-30
Date of Implementation: 2010-05-01
Regulation (derived from): National Standard Approval Announcement 2009 No.14 (Total No.154)
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 determination of benzyl alcohol preservative in cosmetics by gas chromatography. Determination of cosmetics such as benzyl alcohol lotion, This standard applies to creams, emulsion.

GB/T 24800.11-2009: Determination of benzyl alcohol as antiseptic in cosmetics by gas 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 benzyl alcohol as antiseptic in cosmetics by gas chromatography method ICS 71.100.70 Y42 National Standards of People's Republic of China Determination of benzyl alcohol preservatives in cosmetics Gas Chromatography Posted 2009-11-30 2010-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

Appendix A of this standard is an informative annex. 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 is drafted by. Shanghai Institute of Quality Supervision, Inspection. The main drafters of this standard. Cao Chengming, Zhouyao Bin, Li Qin, Gu Yuxiang, Zhou Zelin. Determination of benzyl alcohol preservatives in cosmetics Gas Chromatography

1 Scope

This standard specifies the determination of benzyl alcohol preservative in cosmetics by gas chromatography. This standard applies to the determination of benzyl alcohol cream, lotion, lotion, hair dyes and other cosmetics. The detection limit of this method is 13μg/g, Quantification limit of the method was 0.005%. Principle 2 The sample was ethanol ultrasonic extraction, centrifugation after the separation, with nitrogen as a carrier gas, using gas chromatography capillary column, flame from Ionization detector (FID detector), external standard.

3 Reagents and materials

Unless otherwise stated, all reagents were of analytical grade. 3.1 ethanol. 3.2 benzyl alcohol, chromatography, content of not less than 99.5%. 3.3 benzyl alcohol standard stock solution. Accurately weigh 0.1000g of benzyl alcohol in 100mL volumetric flask, dissolved in ethanol and dilute to the mark degree. This solution was equivalent to 1.0mg 1mL benzyl alcohol.

4 instruments and equipment

4.1 Gas chromatograph. with flame ionization detector (FID). 4.2 Analytical balance, a sense of the amount of 0.1mg. 4.3 Analytical balance, a sense of the amount of 0.01g. 4.4 flask. 10mL, 100mL. 4.5 plug scale centrifugal tube. 10mL. 4.6 ultrasonic oscillator. 4.7 centrifuge. speed of not less than 3000r/min. 4.8 Membrane. Aperture 0.45mm. Step 5 Analysis 5.1 Preparation of the standard curve 5.1.1 Standard solution series Pipette accurately benzyl alcohol standard stock solution (3.3) 1.00mL, 2.00mL, 3.00mL, 4.00mL, 5.00mL to 10mL Flask, diluted with ethanol to the mark. Preparation of a concentration of 100μg/mL, 200μg/mL, 300μg/mL, 400μg/mL, 500μg/mL solution of the standard series. 5.1.2 GC reference conditions Reference GC conditions were as follows. a) Column. 5% phenyl dimethylpolysiloxane silica capillary, 60m × 0.53mm (inner diameter) × 1.0μm, or equivalent person; b) Column temperature. 100 ℃ holding 3min, at a rate of 10 ℃/min heating to 240 ℃, then at a rate of 40 ℃/min the temperature was raised to ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 24800.11-2009_English be delivered?

Answer: Upon your order, we will start to translate GB/T 24800.11-2009_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 24800.11-2009_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 24800.11-2009_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. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.