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SN/T 2889-2011: Food contact materials for export. Polymers. Determination of toluene, ethylbenzene, propylbenzene, isopropylbenzene, styrene and total volatile substances in polystyrene. Gas chromatography method
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Food contact materials for export. Polymers. Determination of toluene, ethylbenzene, propylbenzene, isopropylbenzene, styrene and total volatile substances in polystyrene. Gas chromatography method
| Valid |
Basic data | Standard ID | SN/T 2889-2011 (SN/T2889-2011) | | Description (Translated English) | Food contact materials for export. Polymers. Determination of toluene, ethylbenzene, propylbenzene, isopropylbenzene, styrene and total volatile substances in polystyrene. Gas chromatography method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X08 | | Classification of International Standard | 67.250 | | Word Count Estimation | 10,180 | | Date of Issue | 2011-05-31 | | Date of Implementation | 2011-12-01 | | Regulation (derived from) | National-Quality-Inspection-accreditation (2011) 291 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the polystyrene and its products in toluene, ethylbenzene, propyl benzene, cumene, styrene, gas chromatography method of total volatile substances. This standard applies to polystyrene and its products in toluene, ethylbenzene, propyl benzene, cumene, styrene, Determination of total volatile substances. This standard toluene, ethylbenzene, propyl benzene, cumene, styrene limit of determination are 200mg/kg. | SN/T 2889-2011: Food contact materials for export. Polymers. Determination of toluene, ethylbenzene, propylbenzene, isopropylbenzene, styrene and total volatile substances in polystyrene. Gas chromatography method
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Food contact materials for export.Polymers.Determination of toluene, ethylbenzene, propylbenzene, isopropylbenzene, styrene and total volatile substances in polystyrene.Gas chromatography method
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Export of food contact materials - Polymer
Polystyrene, toluene, ethylbenzene, propylbenzene, cumene,
Determination of styrene, total volatile substances
Gas chromatography
Determinationoftoluene, ethylbenzene, propylbenzene, isopropylbenzene, styrene
Issued on. 2011-05-31
2011-12-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents.
This standard is proposed and managed by the China Certification and Accreditation Regulatory Commission.
This standard was drafted. People's Republic of China Guangdong CIQ.
The main drafters of this standard. Li Dan, Chen Wenjie, Spermato Homocysteine on Wangyun Yu, Liu Yingfeng, ZHOU Ming-hui, Di Cuiping, Zheng Jianguo.
Export of food contact materials - Polymer
Polystyrene, toluene, ethylbenzene, propylbenzene, cumene,
Determination of styrene, total volatile substances
Gas chromatography
1 Scope
This standard specifies the polystyrene products and toluene, ethylbenzene, propylbenzene, cumene, styrene, gas chromatography detection of total volatile substances
Measuring method.
This standard applies to polystyrene, toluene, ethylbenzene, propylbenzene, cumene, styrene, and determine the total volatiles article.
This standard toluene, ethylbenzene, propylbenzene, cumene and styrene were measured lower limit of 200mg/kg.
Principle 2
Method 1. The sample is dissolved in tetrahydrofuran to p-ethylbenzene as internal standard, determined by gas chromatography (GC).
Method two. using N, N- dimethylacetamide sample was dissolved in n-undecane as an internal standard, using headspace - by gas chromatography (HS-GC)
Determination.
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Total volatiles totalvolatilesubstances
And the quality of the sample unit mass of toluene, ethylbenzene, propylbenzene, cumene and styrene.
4 Reagents
Unless otherwise indicated, the reagents only analytical grade.
4.1 Tetrahydrofuran (THF). purity ≥99%.
4.2 N, N- dimethylacetamide (DMA). purity ≥98%.
4.3 Toluene. purity ≥99.5%.
4.4 Ethylbenzene. purity ≥99.5%.
4.5 propylbenzene. Purity ≥99%.
4.6 Cumene. Purity ≥99%.
4.7 Styrene. purity ≥99.5%.
4.8 pairs diethylbenzene. Purity ≥99%.
4.9 undecane. purity ≥98%.
4.10 Standard stock solution of a (used in the process a). (5.3) was added 90mLTHF (4.1) in 100mL volumetric flask, accurately weighed into toluene
(4.3), ethylbenzene (4.4), propylbenzene (4.5), cumene (4.6), styrene (4.7) each 50mg (accurate to 0.1mg), then continue to add THF
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