GB 29981-2013Food additive -- N-ethyl-2-isopropyl-5-methyl-cyclohexanecarboxamide (English PDF)

2.1 Chemical Name

N- ethyl-2-isopropyl-5-methyl - cyclohexanecarboxamide Formula 2.2 C13H25ON

2.3 Formula

2.4 Relative molecular mass

211.35 (according to 2007 international relative atomic mass)

3.1 Sensory requirements

Sensory requirements shall comply with the requirements of Table 1.

Table 1 Sensory requirements

Project requires test methods the white color sample placed on a clean white paper, were visually observed State of the crystalline solid Slight aroma of mint-like cool taste 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 N- ethyl-2-isopropyl-5-methyl - cyclohexanecarboxamide content, w /% >= 99.0 Appendix A Melting point (°C) 91 ~ 98 GB/T 14457.3 Appendix A Ethyl-2-isopropyl-N- methyl -5--- cyclohexanecarboxamide Content Determination A.1 instruments and equipment A.1.1 chromatograph. According to GB/T 11538-2006 provisions in Chapter 5.

A.1.2 Column. capillary column.

A.1.3 Detector. Hydrogen flame ionization detector.

A.2 Determination

Area normalization method. According to GB/T 11538-2006 10.4 Determination.

Sample Preparation. Weigh 1 g sample was dissolved in 2 mL of anhydrous ethanol, shake spare.

A.3 repeatability and results are shown According to GB/T 11538-2006 provisions in 11.4, shall comply with the requirements.

Food Additives N- ethyl-2-isopropyl-5-methyl - cyclohexane carboxamide gas chromatograph (area normalization method) See Appendix B.

Appendix B

Food additives N- ethyl-2-isopropyl-5-methyl - cyclohexanecarboxamide gas chromatogram (Area normalization method) B.1 food additives N- ethyl-2-isopropyl-5-methyl - cyclohexanecarboxamide gas chromatogram

Figure B.1.

1-- ethanol;

2 - N- ethyl-2-isopropyl-5-methyl - cyclohexane carboxamide.

Figure B.1 food additives N- ethyl-2-isopropyl-5-methyl - cyclohexanecarboxamide gas chromatogram

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

B.2.2 stationary phase. polyethylene glycol.

B.2.3 film thickness. 0.25 µm.

B.2.4 chromatography oven temperature.200 °C constant temperature.

B.2.5 Inlet temperature. 220 °C.

B.2.6 detector temperature. 250 °C.

B.2.7 Detector. Hydrogen flame ionization detector.

B.2.8 carrier gas. nitrogen.

B.2.9 carrier gas flow rate. 1.2 mL/min.

B.2.10 Injection volume. about 0.2 µL.

B.2.11 split ratio. 80︰1.