SN/T 2107-2008 PDF English
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Determination of monoethanolamine, diethanolamine and triethanolamine in cosmetics for import and export
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SN/T 2107-2008: Determination of monoethanolamine, diethanolamine and triethanolamine in cosmetics for import and export
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/SNT2107-2008
SN
ENTRY AND EXIT INSPECTION AND QUARANTINE
Determination of monoethanolamine, diethanolamine and
triethanolamine in cosmetics for import and export
Issued on. JULY 17, 2008
Implemented on. FEBRUARY 01, 2009
Issued by. General Administration for Quality Supervision Inspection and
Quarantine of PRC
Table of Contents
Foreword... 3
1 Scope... 4
2 Principles... 4
3 Reagents and materials... 4
4 Instruments... 5
5 Determination steps... 5
6 Result calculation... 7
7 Lower limit of determination... 8
8 Recovery and precision... 8
Appendix A (Informative) Gas chromatogram of standard substance... 9
Appendix B (Informative) Characteristic ions of monoethanolamine, diethanolamine,
triethanolamine... 10
Appendix C (Informative) Standard total ion chromatograms for monoethanolamine,
diethanolamine, triethanolamine... 11
Foreword
Appendix A, Appendix B, Appendix C of this standard are informative appendixes.
This standard was proposed by AND shall be under the jurisdiction of the National
Certification and Accreditation Administration Commission.
Drafting organization of this standard. Industrial Products Institute of China Academy
of Inspection and Quarantine.
The main drafters of this standard. Wang Xing, Cai Tianpei, Wu Ting, Xiao Haiqing,
Wang Chao, Ma Qiang, Zhang Fan, Liu Liu.
This standard is an entry-exit inspection and quarantine industry standard, which was
issued for the first time.
Determination of monoethanolamine, diethanolamine and
triethanolamine in cosmetics for import and export
1 Scope
This standard specifies the methods for the determination of monoethanolamine,
diethanolamine, triethanolamine, in cosmetics.
This standard applies to the determination of monoethanolamine, diethanolamine,
triethanolamine, in skin care cosmetics.
2 Principles
Monoethanolamine, diethanolamine, triethanolamine in cosmetics are extracted with
ethanol by ultrasonic; centrifugally filtered; separated and determined by gas
chromatography. It is qualitative by retention time, quantitative by external standard
method, confirmed by the gas chromatography-mass spectrometry method.
3 Reagents and materials
Unless otherwise stated, all reagents used are of analytical grade AND water is
secondary deionized water.
3.1 Monoethanolamine, purity ≥ 99%.
3.2 Diethanolamine, purity ≥ 99%.
3.3 Triethanolamine, purity ≥ 99%.
3.4 Monoethanolamine, diethanolamine, triethanolamine standard stock solution.
Respectively accurately weigh 0.5 g each of monoethanolamine, diethanolamine,
triethanolamine, accurate to 0.0001 g, in a 50 mL beaker.
3.5 Standard mixed stock solutions of monoethanolamine, diethanolamine,
triethanolamine. Respectively accurately pipette 20 mL of each of monoethanolamine,
diethanolamine, triethanolamine stock solutions, into a 100 mL volumetric flask.
3.6 Standard working solutions of monoethanolamine, diethanolamine and
triethanolamine. Pipette the standard mixed stock solution (3.5), to prepare the standard
working solution, whose concentrations of three ethanolamine are 50, 100, 200, 500,
1000 mg/L respectively. Store in refrigerator.
4 Instruments
4.1 Gas chromatograph. It is equipped with a hydrogen flame ionization detector (FID).
4.2 Gas chromatograph. It is equipped with mass detector (MSD).
4.3 Micro-sampler. 10 µL.
5 Determination steps
5.1 Sample processing
Weigh 1.0 g of cosmetic specimen, accurate to 0.001 g. Put it in a 50 mL conical flask
with stopper. Add 10 mL of ethanol accurately.
5.2 Determination
5.2.1 Instrument conditions
5.2.1.1 Gas chromatography (GC-FID) conditions
5.2.1.2 Gas chromatography-mass spectrometry (GC/MSD) conditions
5.2.2 Specimen determination
5.2.2.1 Drawing of standard working curve
Accurately pipette 1.0 µL of the standard working solution (3.6). Inject it into the gas
chromatograph, in the order of concentration from thin to concentrated. Perform the
measurement, according to the chromatographic conditions (5.2.1.1). Take the peak
area of the chromatographic peak as the ordinate, AND the corresponding concentration
as the abscissa, to draw the standard working curve. See Appendix A, for the standard
gas chromatograms of monoethanolamine, diethanolamine, triethanolamine.
5.3 Blank test
Carry out the above steps, except that the specimen is not weighed.
6 Result calculation
The result is calculated, according to formula (1).
7 Lower limit of determination
The lower limit for the determination of monoethanolamine and diethanolamine, in this
standard, is 0.05%; the lower limit for the determination of triethanolamine is 0.1%.
8 Recovery and precision
The recovery and precision are as shown in Table 1.
Appendix A
(Informative)
Gas chromatogram of standard substance
1 - Monoethanolamine (2.44 min); 2 - Diethanolamine (7.28 min); 3 - Triethanolamine
(10.16 min).
Appendix B
(Informative)
Characteristic ions of monoethanolamine, diethanolamine, triethanolamine
Appendix C
(Informative)
Standard total ion chromatograms for monoethanolamine, diethanolamine,
triethanolamine
SN/T 2107-2008
SN
ENTRY AND EXIT INSPECTION AND QUARANTINE
Determination of monoethanolamine, diethanolamine and
triethanolamine in cosmetics for import and export
Issued on. JULY 17, 2008
Implemented on. FEBRUARY 01, 2009
Issued by. General Administration for Quality Supervision Inspection and
Quarantine of PRC
Table of Contents
Foreword... 3
1 Scope... 4
2 Principles... 4
3 Reagents and materials... 4
4 Instruments... 5
5 Determination steps... 5
6 Result calculation... 7
7 Lower limit of determination... 8
8 Recovery and precision... 8
Appendix A (Informative) Gas chromatogram of standard substance... 9
Appendix B (Informative) Characteristic ions of monoethanolamine, diethanolamine,
triethanolamine... 10
Appendix C (Informative) Standard total ion chromatograms for monoethanolamine,
diethanolamine, triethanolamine... 11
Foreword
Appendix A, Appendix B, Appendix C of this standard are informative appendixes.
This standard was proposed by AND shall be under the jurisdiction of the National
Certification and Accreditation Administration Commission.
Drafting organization of this standard. Industrial Products Institute of China Academy
of Inspection and Quarantine.
The main drafters of this standard. Wang Xing, Cai Tianpei, Wu Ting, Xiao Haiqing,
Wang Chao, Ma Qiang, Zhang Fan, Liu Liu.
This standard is an entry-exit inspection and quarantine industry standard, which was
issued for the first time.
Determination of monoethanolamine, diethanolamine and
triethanolamine in cosmetics for import and export
1 Scope
This standard specifies the methods for the determination of monoethanolamine,
diethanolamine, triethanolamine, in cosmetics.
This standard applies to the determination of monoethanolamine, diethanolamine,
triethanolamine, in skin care cosmetics.
2 Principles
Monoethanolamine, diethanolamine, triethanolamine in cosmetics are extracted with
ethanol by ultrasonic; centrifugally filtered; separated and determined by gas
chromatography. It is qualitative by retention time, quantitative by external standard
method, confirmed by the gas chromatography-mass spectrometry method.
3 Reagents and materials
Unless otherwise stated, all reagents used are of analytical grade AND water is
secondary deionized water.
3.1 Monoethanolamine, purity ≥ 99%.
3.2 Diethanolamine, purity ≥ 99%.
3.3 Triethanolamine, purity ≥ 99%.
3.4 Monoethanolamine, diethanolamine, triethanolamine standard stock solution.
Respectively accurately weigh 0.5 g each of monoethanolamine, diethanolamine,
triethanolamine, accurate to 0.0001 g, in a 50 mL beaker.
3.5 Standard mixed stock solutions of monoethanolamine, diethanolamine,
triethanolamine. Respectively accurately pipette 20 mL of each of monoethanolamine,
diethanolamine, triethanolamine stock solutions, into a 100 mL volumetric flask.
3.6 Standard working solutions of monoethanolamine, diethanolamine and
triethanolamine. Pipette the standard mixed stock solution (3.5), to prepare the standard
working solution, whose concentrations of three ethanolamine are 50, 100, 200, 500,
1000 mg/L respectively. Store in refrigerator.
4 Instruments
4.1 Gas chromatograph. It is equipped with a hydrogen flame ionization detector (FID).
4.2 Gas chromatograph. It is equipped with mass detector (MSD).
4.3 Micro-sampler. 10 µL.
5 Determination steps
5.1 Sample processing
Weigh 1.0 g of cosmetic specimen, accurate to 0.001 g. Put it in a 50 mL conical flask
with stopper. Add 10 mL of ethanol accurately.
5.2 Determination
5.2.1 Instrument conditions
5.2.1.1 Gas chromatography (GC-FID) conditions
5.2.1.2 Gas chromatography-mass spectrometry (GC/MSD) conditions
5.2.2 Specimen determination
5.2.2.1 Drawing of standard working curve
Accurately pipette 1.0 µL of the standard working solution (3.6). Inject it into the gas
chromatograph, in the order of concentration from thin to concentrated. Perform the
measurement, according to the chromatographic conditions (5.2.1.1). Take the peak
area of the chromatographic peak as the ordinate, AND the corresponding concentration
as the abscissa, to draw the standard working curve. See Appendix A, for the standard
gas chromatograms of monoethanolamine, diethanolamine, triethanolamine.
5.3 Blank test
Carry out the above steps, except that the specimen is not weighed.
6 Result calculation
The result is calculated, according to formula (1).
7 Lower limit of determination
The lower limit for the determination of monoethanolamine and diethanolamine, in this
standard, is 0.05%; the lower limit for the determination of triethanolamine is 0.1%.
8 Recovery and precision
The recovery and precision are as shown in Table 1.
Appendix A
(Informative)
Gas chromatogram of standard substance
1 - Monoethanolamine (2.44 min); 2 - Diethanolamine (7.28 min); 3 - Triethanolamine
(10.16 min).
Appendix B
(Informative)
Characteristic ions of monoethanolamine, diethanolamine, triethanolamine
Appendix C
(Informative)
Standard total ion chromatograms for monoethanolamine, diethanolamine,
triethanolamine
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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