GB/T 5173-2018 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 5173-2018 | English | 150 |
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Surface active agents -- Detergents -- Determination of anionic-active matter content -- Direct two-phase titration procedure
| Valid |
| GB/T 5173-1995 | English | 279 |
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Surface active agents and detergents. Determination of anionic-active matter by direct two-phase titration procedure
| Obsolete |
| GB 5173-1985 | English | 199 |
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Surface active agents--Detergents--Determination of anionic-active matter--Direct two-phase titration procedure
| Obsolete |
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GB/T 5173-2018: Surface active agents -- Detergents -- Determination of anionic-active matter content -- Direct two-phase titration procedure
---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/GBT5173-2018
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.100.40
G 72
Replacing GB/T 5173-1995
Surface active agents - Detergents - Determination of
anionic-active matter content - Direct two-phase
titration procedure
(ISO 2271.1989, Surface active agents - Detergents - Determination of
anionic-active matter by manual or mechanical direct two-phase titration
procedure, MOD)
Issued on. DECEMBER 28, 2018
Implemented on. JULY 01, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Principle... 6
4 Reagents... 6
5 Apparatus... 7
6 Preparation of samples... 7
7 Procedures... 7
8 Expression of results... 8
9 Test report... 9
Appendix A (Informative) Technical differences between this Standard and ISO
2271.1989 and their causes... 11
Foreword
This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 5173-1995 "Surface active agents and detergents
- Determination of anionic-active matter by direct two-phase titration procedure".
Compared with GB/T 5173-1995, the main technical changes of this Standard
are as follows.
- ADD the determination of α-sodium alkenyl sulfonate (AOS) (see 7.2);
- Delete the selective use of ethidium bromide (see 4.8.1.3 of the 1995
edition);
- Modify the recommended sampling mass of test portion (see 7.1; 7.1 of the
1995 edition);
- Modify the constant volume of test portion (see 7.2; 7.2 of the 1995 edition);
- Modify the formulas for calculating the anionic-active matter content (see
8.1; 8.1 of the 1995 edition);
- Delete sodium lauryl sulfate (see 4.5 of the 1995 edition);
- Delete the preparation and calibration process of benzethonium chloride
and acidic mixed indicator solution; ADD reference standards (see 4.6 and
4.8 of the 1995 edition).
This Standard uses the redraft rules to modify and adopt ISO 2271.1989
"Surface active agents - Detergents - Determination of anionic-active matter by
manual or mechanical direct two-phase titration procedure".
Compared with ISO 2271.1989, the structure of this Standard is adjusted as
follows.
- Delete the sections on automatic titration instrument of 5.5 and 5.6 of ISO
2271.1989;
- ADD "5.5 Beaker";
- ADD the calculation formula expressed in mmol/g in 8.1;
- Merge 4.2 and 4.3 in ISO 2271.1989 into 4.2 in this Standard. Modify 4.4 in
ISO 2271.1989 into 4.3 in this Standard. Delete 4.5 Sodium lauryl sulfate
in ISO 2271.1989.Delete preparation and calibration process of 4.6
benzethonium chloride and 4.8 acidic mixed indicator solution; ADD the
reference standards. Modify 4.6 in ISO 2271.1989 into 4.5 in this Standard.
Modify 4.7 in ISO 2271.1989 into 4.4 in this Standard;
- ADD "e) Test date and test personnel" in Clause 9 "Test report".
There are technical differences between this Standard and ISO 2271.1989.The
clauses involved in these differences have been marked by a vertical single line
(|) at the blank of the outer margin. Appendix A gives a list of corresponding
technical differences and their causes.
This Standard also makes the following editorial changes.
- Modify standard name;
- Delete informative Appendix A;
- Modify precautions for the use of chloroform (see 4.1; 4.1 of the 1995
edition).
This Standard was proposed by China National Light Industry Council.
This Standard shall be under the jurisdiction of National Technical Committee
272 on Surface Active Agents and Washing Supplies of Standardization
Administration of China (SAC/TC 272).
Drafting organizations of this Standard. China Research Institute of Daily
Chemistry Co., Ltd. [China Washing Supplies Quality Supervision Inspection
Center (Taiyuan)], Zanyu Technology Group Co., Ltd., Xi'an Kaimi Co., Ltd.,
Shanxi Institute of Standardization, Shenzhen Biogmi Biotechnology Co., Ltd.
Main drafters of this Standard. Yao Chenzhi, Xue Wei, Ge Zan, Yu Wen, Duan
Pingmei, Zhao Hongmei, Guo Hongtao.
The previous editions of the standard replaced by this Standard were released
as follows.
- GB/T 5173-1985, GB/T 5173-1995.
Surface active agents - Detergents - Determination of
anionic-active matter content - Direct two-phase
titration procedure
1 Scope
This Standard specifies the direct two-phase titration procedure for
determination of anionic-active matter content of anionic surface active agents
and detergents.
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are
applicable to this document. For the undated references, the latest edition
(including all the amendments) are applicable to this document.
3 Principle
In a two-phase medium of water and chloroform, in the presence of an acidic
mixed indicator solution, use a cationic surface active agent (benzethonium
chloride) to titrate, to determine anionic-active matter.
4 Reagents
Unless otherwise specified, the analysis is conducted using the confirmed
analytically pure reagents. Water is Grade III water in accordance with GB/T
6682.
5 Apparatus
General laboratory instrument and the following.
6 Preparation of samples
In accordance with the provisions of Clause 4 of GB/T 13173-2008, prepare
and store test samples.
7 Procedures
Warning — Due to the toxicity of chloroform, the corresponding operation
of direct two-phase titration shall be performed in a fume hood or a well-
ventilated environment.
8 Expression of results
For the same sample, using the same test method, in the same laboratory,
measure by the same operator using the same instrument in a short time
interval, the difference between the results of two consecutive determinations
shall not exceed 1.5% of the mean.
9 Test report
The test report shall include the following.
Appendix A
(Informative)
Technical differences between this Standard and ISO 2271.1989 and
their causes
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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