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GB/T 22728-2008 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 22728-2008: Determination of butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) in cosmetics -- High performance liquid chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22728-2008	139	Add to Cart	3 days	Determination of butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) in cosmetics -- High performance liquid chromatography	Valid

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Basic data

Standard ID: GB/T 22728-2008 (GB/T22728-2008)
Description (Translated English): Determination of butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) 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: 6,659
Date of Issue: 2008-12-31
Date of Implementation: 2009-08-01
Regulation (derived from): National Standard Approval Announcement 2008 No.24 (Total No.137)
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 liquid chromatographic method cosmetics butyl hydroxy anisole (BHA) and butylated hydroxytoluene (BHT) of. This standard applies to solids, determination paste and liquid cosmetics butyl hydroxy anisole (BHA) and butylated hydroxytoluene (BHT) of. This standard method detection limit: butylated hydroxy anisole (BHA), dibutyl hydroxy toluene (BHT) are 0. 005%.

GB/T 22728-2008: Determination of butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) in cosmetics -- 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.
Determination of butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) in cosmetics. High performance liquid chromatography ICS 71.100.70 Y42 National Standards of People's Republic of China Cosmetics butylhydroxyanisole (BHA) and Determination of dibutyl hydroxy toluene (BHT) of High Performance Liquid Chromatography Posted 2008-12-31 2009-08-01 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. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. Chinese Academy of Inspection and Quarantine. The main drafters of this standard. Falls Apart, Hao Nan, Yu Wen Lin, Zhou Xin, birch, Juan, Luga text. Cosmetics butylhydroxyanisole (BHA) and Determination of dibutyl hydroxy toluene (BHT) of High Performance Liquid Chromatography

1 Scope

This standard specifies the method for liquid chromatography cosmetics butyl hydroxy anisole (BHA) and butylated hydroxytoluene (BHT) of. This standard is applicable to solid, pasty and liquid cosmetics butyl hydroxy anisole (BHA) and butylated hydroxytoluene (BHT) of Determination. The standard method detection limit. butylated hydroxy anisole (BHA), butylated hydroxytoluene (BHT) are 0.005%. Principle 2 Extracted with methanol by ultrasonic cosmetics BHA, BHT, centrifuged, the supernatant was filtered, and the filtrate was equipped with a UV detector efficiency Liquid chromatography detection, external standard.

3 Reagents and materials

Unless otherwise indicated, all reagents were of analytical grade and water as secondary deionized or distilled water. 3.1 methanol Pure class distinctions or chromatography. 3.2 Standard BHA, purity of not less than 98% (of which 3-BHA, purity of not less than 90%; 2-BHA, purity of not more than 8%); BHT, purity not less At 99%. 3.3 stock standard solution BHA's standard stock solution. Weigh accurately BHA standard 0.1g, accurate to 1mg, dissolved with methanol was transferred to a 100mL capacity Flask, constant volume of methanol, shaking uniform, that was the BHA concentration of standard stock solution 1000μg/mL of. Standard stock solution of BHT. BHT standard accurately weighed 0.1g, accurate to 1mg, dissolved with methanol was transferred to a 100mL capacity Flask, constant volume of methanol, shaking uniform, that was BHT concentration of standard stock solution 1000μg/mL of.

4 Instrument

4.1 High performance liquid chromatograph. with UV detector. 4.2 ultrasonic cleaner. 4.3 high-speed centrifuge. not less than 15000r/min. 4.4 syringe filter samples. the organic phase with a membrane, the membrane pore size of 0.45μm. 4.5 conical flask. a grinding gag, 50mL. 4.6 flask. 100mL, 25mL.

5 Determination

5.1 Sample Processing 5.1.1 solid, pasty Cosmetics. Cosmetics weighed 0.5g (accurate to 1mg) in 50mL conical flask, methanol was added 25.00mL, super Sound extraction 20min, to 12000r/min high-speed centrifugal 15min, supernatant was 0.45μm filter, filtrate for testing. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 22728-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 22728-2008_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 22728-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 22728-2008_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.