GB 1886.280-2016National Food Safety Standard -- Food Additives -- Ethyl 2-methylpentanoate (English PDF)

2.1 Chemical Name

2-methyl pentanoate

Formula 2.2

C8H16O2

2.3 Formula

2.4 Molecular Weight

144.21 (according to 2007 international relative atomic mass)

3.1 Sensory requirements

Sensory requirements shall comply with the requirements in Table 1.

Table 1 Sensory requirements

Project requires test methods Color status Colorless to pale yellow liquid the sample was placed in a cuvette, were visually observed Aroma fruity aroma GB/T 14454.2

3.2 Physical and Chemical Indicators

Physical and chemical indicators should be consistent with the provisions of Table 2.

Table 2. Physical and chemical indicators

Item Index Test Method Methyl-pentanoic acid ethyl ester content, w /% >= 98.0 Appendix A Acid number (as KOH)/(mg/g) <= 1.0 GB/T 14455.5 Refractive index (20 °C) 1.401 ~ 1.406 GB/T 14454.4 Relative density (25 °C/25 °C) 0.859 ~ 0.865 GB/T 11540 Appendix A Determination of the content of 2-methyl pentanoate A.1 instruments and equipment A.1.1 Chromatography. in GB/T 11538-2006 specified in Chapter 5.

A.1.2 Column. capillary column.

A.1.3 Detector. hydrogen flame ionization detector.

A.2 Determination

Area normalization method. Press the GB/T 11538-2006 Determination 10.4.

A.3 repeatability and results are expressed 11538-2006 carried out in accordance with the provisions of 11.4 GB/T , should meet the requirements.

Food additives methyl pentanoate gas chromatogram and operating conditions see Appendix B.

Appendix B

Food additives methyl pentanoate GC operating conditions and FIG.

(Area normalization method) B.1 2-methyl pentanoate food additive gas chromatogram Food additives methyl pentanoate gas chromatography is shown in Figure B.1.

Figure B.1 2-methyl pentanoate food additive gas chromatogram

B.2 operating conditions B.2.1 Column. capillary column, length 30m, diameter 0.25mm.

B.2.2 stationary phase. polyethylene glycol 20000.

B.2.3 film thickness. 0.25µm.

B.2.4 chromatographic oven temperature. 120 °C thermostat 4min, followed by a linear temperature programmed from 120 deg.] C to 195 °C, a rate of 3 °C/min, and finally 195 °C constant temperature 10min.

B.2.5 Inlet temperature. 210 °C.

B.2.6 detector temperature. 260 °C.

B.2.7 Detector. hydrogen flame ionization detector.

B.2.8 Carrier gas. nitrogen.

B.2.9 before the column pressure. 0.06MPa.

B.2.10 Injection volume. 0.1µL.

B.2.11 split ratio. 75.1.