SN/T 2048-2008 English PDF

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SN/T 2048-2008: Determination of antioxidants in plastics and plastic articles-High performance liquid chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 2048-2008	189	Add to Cart	3 days	Determination of antioxidants in plastics and plastic articles-High performance liquid chromatography	Valid

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Basic data

Standard ID: SN/T 2048-2008 (SN/T2048-2008)
Description (Translated English): Determination of antioxidants in plastics and plastic articles-High performance liquid chromatography
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: G31
Word Count Estimation: 7,798
Date of Issue: 2008-04-29
Date of Implementation: 2008-11-01
Regulation (derived from): Industry standard filing Notice 2008 No. 7
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the plastic raw materials and products in tert-butyl hydroxy anisole (BHA), tertiary butylated hydroxy toluene (BHT), tetrakis [3 (3 " 5 " di-tert-butyl-4 " a hydroxyphenyl) propionate] (antioxidant 1010), 3, 5 di-tert-butyl-4 hydroxy-propionamide (antioxidant 1098), ��-(4 hydroxy-3, 5 di- butylphenyl) propionate ester octadecanol (antioxidant 1076) Antioxidant Determination by HPLC. This standard applies to plastic raw materials and products in the BHA, BHT, antioxidant 1010 antioxidant 1098, 1076 antioxidant content.

SN/T 2048-2008: Determination of antioxidants in plastics and plastic articles-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 antioxidants in plastics and plastic articles-High performance liquid chromatography Exit inspection and quarantine industry standard book People's Republic of China Determination of plastic raw materials and products in antioxidants High Performance Liquid Chromatography Posted 2008-04-29 2008-11-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine 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. People's Republic of China Zhejiang Exit Inspection and Quarantine, Shenzhen People's Republic of China Entry-Exit Inspection and Quarantine Bureau, People's Republic of China Guangdong Entry-Exit Inspection and Quarantine Shandong People's Republic of China. The main drafters of this standard. Xie, Zhang Xiao radon, Huang Lei Fang, Yang left the military, Shaw ago, Wang Jiachun. This standard is the first release of the entry-exit inspection and quarantine industry standards. Determination of plastic raw materials and products in antioxidants High Performance Liquid Chromatography

1 Scope

This standard specifies the plastic raw materials and products of tertiary butyl hydroxy anisole (BHA), tert-dibutyl hydroxy toluene (BHT), tetrakis [3- (3 ', 5'-di-t-butyl-4'-hydroxyphenyl) propionate] (antioxidant 1010), 3,5-di-t-butyl-4-hydroxyphenyl propionamide (Antioxidant High performance liquid agent 1098), β- (4- hydroxy-3,5-di-tert-butyl-phenyl) propionate carbon alcohol ester (antioxidant 1076) Antioxidant Contents Phase chromatographic method. This standard applies to plastic materials and articles in BHA, BHT, antioxidant 1010, antioxidant 1098, antioxidant 1076 containing Determination of the amount.

2 Method summary

The low temperature sample fine, size to 0.5mm (35 mesh) or less, with methanol Soxhlet extraction of antioxidants in the sample, with high performance liquid chromatography Spectrometer, external standard.

3 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade, double distilled water. 3.1 Methanol. HPLC fractions. 3.2 acetonitrile. HPLC fractions. 3.3 phosphoric acid. purity ≥85%. 3.4 BHA, BHT, antioxidant 1010, antioxidant 1098, antioxidant 1076 standards. purity ≥98%. 3.5 BHA, BHT, antioxidant 1010, antioxidant 1098, antioxidant 1076 standard stock solution. weigh accurately each standard (3.4) The amount of methanol were prepared at a concentration of 1mg/mL solution. 0 ℃ ~ 4 ℃ cold storage period of three months. 3.6 mixed standard working solution. draw an appropriate amount of standard stock solution (3.5), prepared in methanol BHA, BHT, antioxidant 1010, antioxidant 1098 agent concentration 2μg/mL, 3μg/mL, 10μg/mL, 50μg/mL, 60μg/mL, concentration of antioxidant 1076 3μg/mL, Mixed standard working solution 5μg/mL, 10μg/mL, 50μg/mL, 60μg/mL of. 0 ℃ ~ 4 ℃ cold storage period of three months.

4 instruments and equipment

4.1 High performance liquid chromatograph. with diode array (DAD) detector. 4.2 Analysis of balance. a sense of the amount of 0.01g and 0.1mg. 4.3 Freezer Mill. 4.4 vortex mixer. 4.5 rotary evaporator. 4.6 Soxhlet apparatus. 4.7 0.45μm organic phase filters.

5 sample preparation

Refrigerating grinder (4.3) The sample was milled to a particle size 0.5mm (35 mesh) or less. Mixing, into a clean container, at room temperature save. ......

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