GB 1886.288-2016National Food Safety Standard -- Food Additives -- Ethyl benzoate (English PDF)

2.1 Chemical Name

Benzoate

Formula 2.2

C9H10O2

2.3 Formula

2.4 Molecular Weight

150.18 (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 Oily liquid the sample was placed in a cuvette, were visually observed Mild aroma, strong floral, 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 Benzoate content, w /% >= 98.0 Appendix A Acid number (as KOH)/(mg/g) <= 1.0 GB/T 14455.5 Refractive index (20 °C) 1.502 ~ 1.508 GB/T 14454.4 Relative density (25 °C/25 °C) 1.043 ~ 1.050 GB/T 11540 Appendix A Content Determination benzoate 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 additive gas chromatogram benzoate and operating conditions see Appendix B.

Appendix B

Benzoate gas chromatogram and operating conditions (Area normalization method) B.1 food additive gas chromatogram of ethyl Benzoate food additive gas chromatography is shown in Figure B.1.

Figure B.1 food additive gas chromatogram of ethyl

B.2 operating conditions B.2.1 Column. capillary column, length 30m, internal diameter 0.53mm.

B.2.2 stationary phase. 100% polydimethyl siloxane.

B.2.3 film thickness. 1.5µm.

B.2.4 chromatographic oven temperature. 100 °C thermostat 0.1min, then linear temperature programmed from 100 deg.] C to 180 °C, a rate of 5 °C/min, then linear Temperature programmed from 180 [deg.] C to 260 °C, a rate of 10 °C/min, the final temperature at 260 °C 10min.

B.2.5 Inlet temperature. 260 °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. 30kPa.

B.2.10 Injection volume. 0.2µL.

B.2.11 split ratio. 80.1.