GB 29202-2012Food Additives -- Nitrogen [including 2016 Modification 1] (English PDF)
食品添加剂 氮气
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Issued by
National Health and Family Planning Commission of the People’s Republic of China
Level / Type
National · Mandatory
Issue date
December 25, 2012
Implementation date
January 25, 2013
Scope
GB 29202-2012 is the English-translated version of 食品添加剂 氮气.
GB 29202-2012 is the Chinese standard "Food Additives -- Nitrogen [including 2016 Modification 1]". Its scope clause reads: This Standard applies to food additive nitrogen produced by deep cooling air separation, pressure swing absorption, membrane separation and small special nitrogen making machine.
Its clauses include application scope; molecular formula and relative molecular mass; technical requirements. It was issued by the National Health and Family Planning Commission of the People’s Republic of China on 2012-12-25 and took effect on 2013-01-25.
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Document preview — GB 29202-2012
National Standard of the People's Republic of China
Issued by: National Health and Family Planning Commission of the People’s Republic of China
Contents
- 1 Application Scope...3
- 2 Molecular Formula and Relative Molecular Mass...3
- 3 Technical Requirements...3
- Annex A Test Method...5
- No.1 Amendment...7
1 Application Scope
This Standard applies to food additive nitrogen produced by deep cooling air separation, pressure swing absorption, membrane separation and small special nitrogen making machine.
2 Molecular Formula and Relative Molecular Mass
2.1 Molecular formula
N2
2.2 Relative molecular mass
28.01 (in accordance with International Relative Atomic Masses 2007)
3 Technical Requirements
3.1 Sensory requirements
As specified in Table 1.
Annex A
Test Method
A.1 Warning
A high-pressure gas cylinder is used in the test method of this Standard, so appropriate safety and protection measures shall be taken.
A.2 Identification test
Insert a small wood stick ignited carefully into a test tube filled with test gas; the flame extinguishes.
A.4 Determination of oxygen (O2)
A.4.1 Electrochemical process
A.4.2 Zirconia detector gas chromatographic method
A.4.2.1 Method summary
Use the zirconia solid battery as the detector of gas chromatography. The component oxygen to be tested in the sample enters into the detector after separation by the chromatographic column and generates corresponding chromatographic peak signals.
And then use the external standard method for quantitative determination.
A.4.2.2 Apparatus
Gas chromatograph. as specified in HG/T 2686.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.
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