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GB 28339-2012 English PDF

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GB 28339-2012: Food additives -- Dimethyl sulfide
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB 28339-2012	English	169	Add to Cart	3 days [Need to translate]	Food additives -- Dimethyl sulfide	Valid	GB 28339-2012

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Basic data

Standard ID	GB 28339-2012 (GB28339-2012)
Description (Translated English)	Food additives -- Dimethyl sulfide
Sector / Industry	National Standard
Classification of Chinese Standard	C54;X40
Classification of International Standard	67.220.20
Word Count Estimation	7,723
Regulation (derived from)	Ministry of Health Bulletin 2012 No. 7
Issuing agency(ies)	Ministry of Health of the People's Republic of China
Summary	This Chinese standard applies to sodium methyl mercaptan for raw materials for food additives dimethyl sulfide.

GB 28339-2012: Food additives -- Dimethyl sulfide

---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.
Food additives.Dimethyl sulfide National Standards of People's Republic of China National standards for food safety Food Additives Dimethyl Sulfide 2012-04-25 release 2012-06-25 Implementation Issued by the Ministry of Health of the People's Republic of China National standards for food safety Food Additives Dimethyl Sulfide

1 Scope

This standard applies to sodium methanethiol as raw materials prepared by the food additive dimethyl sulfide. 2 chemical name, molecular formula, structural formula and relative molecular mass 2.1 Chemical name Dimethyl sulfide 2.2 Molecular formula C2H6S 2.3 Structural formula CH3SCH3 2.4 Relative molecular mass 62.14 (according to.2007 International Relative Atomic Quality)

3 technical requirements

3.1 sensory requirements. should be consistent with the provisions of Table 1. Table 1 sensory requirements The project requires a test method Color colorless to pale yellow State liquid The sample was placed in a colorimetric tube and visually observed Aroma of unpleasant raw radish, cabbage flavor GB/T 14454.2 3.2 Physical and chemical indicators. should be consistent with the provisions of Table 2. Table 2 Physical and chemical indicators Item Index Test Method Solubility (25 ° C) 1 mL The sample was dissolved in 1 mL of 95% by volume ethanol. GB/T 14455.3 Dimethyl sulfide content, w /% ≥ 95.0 Appendix A Refractive index (20 ° C) 1.423 ~ 1.441 GB/T 14454.4 Relative density (25 ℃/25 ℃) 0.840 ~ 0.850 GB/T 11540

Appendix A

Determination of dimethyl sulfide content A.1 Instruments and equipment A.1.1 chromatograph. according to GB/T 11538-2006 in Chapter 5 of the provisions. A.1.2 Column. Capillary column. A.1.3 Detector. Hydrogen flame ionization detector. A.2 Determination method Area normalization method. according to GB/T 11538-2006 10.4 determination of content. A.3 repeatability and result representation According to GB/T 11538-2006 11.4 implementation of the provisions. Food additives Dimethyl sulfide Typical gas chromatograms (area normalization) See Appendix B.

Appendix B

Food additive Dimethyl sulfide Typical gas chromatogram (Area normalization method) B.1 Food additive Dimethyl sulfide Typical gas chromatogram Food additives Dimethyl sulfide Typical gas chromatograms are shown in Figure B.1. Figure B.1 Food additive Dimethyl sulfide Typical gas chromatogram B.2 Operating conditions B.2.1 Column. capillary column, length 30m, inner diameter 0.25mm. B.2.2 Stationary phase. Polyethylene glycol. B.2.3 Film thickness. 0.25 μm. B.2.4 chromatographic furnace temperature. 40 ℃ constant temperature 10min, and then linear temperature from 40 ℃ ~.200 ℃, the rate of 10 ℃/min. B.2.5 Inlet temperature. 220 ° C. B.2.6 Detector temperature. 220 ° C. B.2.7 Detector. Hydrogen flame ionization detector. B.2.8 Carrier gas. nitrogen. B.2.9 Pre-column pressure. 70 kPa. B.2.10 Injection volume. about 0.2 μL. B.2.11 Split ratio. 1/100.

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