GB 1886.209-2016National Food Safety Standard -- Food Additives -- N-butyl Alcohol (English PDF)

2.1 Chemical name

N-butanol

2.2 Molecular formula

C4H10O

2.3 Structural formula

2.4 Relative molecular mass

74.12 (according to 2007 International Relative Atomic Quality)

3.1 Sensory requirements

Sensory requirements shall comply with the requirements of Table 1.

Table 1 sensory requirements

The project requires a test method Color and colorless State liquid the sample was placed in a colorimetric tube and visually observed Aroma of wine - like 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 N-butanol content, w /% >= 99.5 Appendix A Acid value (in KOH)/(mg/g) <= 2.0 GB/T 14455.5 Refractive index (20 ° C) 1.393 ~ 1.404 GB/T 14454.4 Relative density (25 °C/25 °C) 0.807 ~ 0.809 GB/T 11540 Moisture /% <= 0.1 GB 5009.3-2010 in the fourth law Butyl ether, w /% <= 0.15 Appendix A Appendix A Determination of n-Butanol Content and Butyl Ether 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 provisions, should meet the requirements.

Food additives n-butanol gas chromatograms and operating conditions see Appendix B.

Appendix B

Food additive n - butanol gas chromatogram and operating conditions (Area normalization method) B.1 Food additive n-butanol gas chromatogram the food additive n-butanol gas chromatogram is shown in Figure B.1.

Description.

1 - n - Butanol;

2 - Butyl ether.

Figure B.1 Food additive n-butanol gas chromatogram

B.2 Operating conditions B.2.1 Column. capillary column, length 30m, inner diameter 0.32mm.

B.2.2 Stationary phase. (5% phenyl) -methylpolysiloxane.

B.2.3 Film thickness. 0.25 µm.

B.2.4 Chromatographic furnace temperature. 100 °C constant temperature.

B.2.5 Inlet temperature..200 ° 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 Pre-column pressure. 50 kPa.

B.2.10 Injection volume. 0.2 µL.

B.2.11 Split ratio. 75. 1.