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SN/T 2738-2010: Food contact materials for export. Poiymers. Determination of ultraviolet-absorbance in food simulants of PMMA
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 2738-2010 | English | 209 |
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Food contact materials for export. Poiymers. Determination of ultraviolet-absorbance in food simulants of PMMA
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SN/T 2738-2010
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PDF similar to SN/T 2738-2010
Basic data | Standard ID | SN/T 2738-2010 (SN/T2738-2010) | | Description (Translated English) | Food contact materials for export. Poiymers. Determination of ultraviolet-absorbance in food simulants of PMMA | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X08 | | Classification of International Standard | 67.250 | | Word Count Estimation | 8,881 | | Date of Issue | 2010-11-01 | | Date of Implementation | 2011-05-01 | | Quoted Standard | GB/T 9723 | | Adopted Standard | FDA 177.1010, MOD | | Regulation (derived from) | National Quality Inspection (2010) 582 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the food contact material polymethyl methacrylate food simulants UV absorbance method. This standard applies to poly (methyl methacrylate) in food simulants UV absorbance measurement. | SN/T 2738-2010: Food contact materials for export. Poiymers. Determination of ultraviolet-absorbance in food simulants of PMMA
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Food contact materials for export.Poiymers.Determination of ultraviolet-absorbance in food simulants of PMMA
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Export of food contact materials - Polymer
Polymethyl methacrylate food simulants
By UV absorbance
Issued on. 2010-11-01
2011-05-01 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.
The criterion-referenced U.S. FDA "177.1010 semi-rigid and rigid acrylic and modified acrylic plastic" (177.1010Acrylic
andmodifiedacrylicplastics, semirigidandrigid.2003CFRTilte21, volum3) in "UV absorbance of the extract
Determination "to develop.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard is mainly drafted by. People's Republic of China Hainan Entry-Exit Inspection and Quarantine Bureau.
The main drafters of this standard. Zhuohai Hua, Xu Li, Liu Mingqi, Chen Wenhui, Pangshu Nan, SU, Huanghai Min.
Export of food contact materials - Polymer
Polymethyl methacrylate food simulants
By UV absorbance
1 Scope
This standard specifies the method for determination of food contact materials polymethyl methacrylate food simulants UV absorbance.
This standard applies to the determination of polymethyl methacrylate food simulants in UV absorbance.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 9721 Chemicals General molecular absorption spectrophotometry
Principle 3
Depending on the intended use and conditions of use of the sample, select the appropriate food simulants (distilled water, 8% ethanol, 50% ethanol solution
Liquid and n- heptane) and migration conditions, the extraction of the sample of poly (methyl methacrylate), a selected maximum wavelength in the range of 220nm ~ 360nm within
Absorption wavelength, with 5cm quartz cuvette measured absorbance of the solution.
4 Reagents and materials
4.1 pairs methoxyphenol. AR, melting point 54 ℃ ~ 56 ℃.
4.2 Distilled water. a water, using air as a reference, in the wavelength range of 245nm within any wavelength 310nm ~, with 5cm quartz cuvette
Measured absorbance should not be more than 0.03.
4.3 8% ethanol solution. Take the amount of ethanol in 40mL 500mL volumetric flask with distilled water to the mark. With distilled water as a reference
Than at any wavelength 310nm wavelength range of 245nm ~ inside with 5cm quartz cuvette, the absorbance should not exceed 0.01.
4.4 50% ethanol solution. Take the amount of ethanol in 500mL 250mL volumetric flask with distilled water to the mark. With distilled water as a reference
Than at any wavelength 310nm wavelength range of 245nm ~ inside with 5cm quartz cuvette, the absorbance should not exceed 0.05.
4.5 n- heptane. chemically pure, 98 ℃ boiled before use purified by distillation. With distilled water as a reference, with 5cm quartz cuvette, wavelength
When at 245nm against, not more than 0.15 absorbance at a wavelength of 260nm, not more than 0.09 absorbance at a wavelength of 270nm, the absorbance
Of not more than 0.04, the wavelength range of an arbitrary wavelength within 280nm ~ 310nm, the absorbance should not exceed 0.02.
4.6 1.0mg/kg of methoxy-phenol solution. Weigh accurately 0.01g methoxyphenol (accurate to 0.001g) in 100mL flask
With distilled water and dissolve to volume, the solution was to draw 1mL another 100mL volumetric flask with distilled water to the mark.
5 instruments and equipment
5.1 UV - visible spectrophotometer. wavelength instruments, resolution, and accuracy of the absorbance should be consistent with the provisions of GB/T 9721, and light distribution
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