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Surface active agents - Test methods for detergents
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| GB/T 13173-2008 | English | 230 |
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Surface active agents -- Detergents -- Testing methods
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| GB/T 13173.1-1991 | English | 279 |
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Method of sample division for detergents
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GB/T 13173-2021: Surface active agents - Test methods for detergents
---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/GBT13173-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.100.40
Y 43
Replacing GB/T 13173-2008
Surface active agents - Test methods for detergents
(ISO 607.1980, ISO 697.1981, ISO 4313.1976, ISO 4321.1977, ISO 4325.1990, ISO
21264.2019, MOD)
ISSUE ON. MAY 21, 2021
Implemented on. DECEMBER 1, 2021
Issued by. State Administration for Market Regulation of the People's Republic of
China;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 5
4 Reduction of sample... 8
5 Determination of particle size of powdered detergents... 13
6 Determination of total phosphorus oxide content in detergents... 15
7 Determination of total active substance content in detergents... 21
8 Determination of non-ionic surface active agent content in detergents (ion exchange
method)... 25
9 Separation determination of various phosphates content in detergents (ion exchange
column chromatography)... 29
10 Determination of toluene sulfonate content in detergents... 34
11 Determination of foaming power for synthetic detergents (Ross-Miles method) 37
12 Determination of EDTA (chelating agent) content in detergents -- Titrimetric
method... 42
13 Determination of apparent density of powdered detergent -- Method by measuring
the mass of a given volume... 44
14 Determination of whiteness of powdered detergents... 48
15 Determination of moisture and volatile content in detergents (oven method)... 51
16 Determination of active oxygen content in detergents (titrimetric method)... 52
17 Determination of 4A zeolite content in detergents (titrimetric method)... 54
18 Determination of alkylphenol ethoxylates content in detergents... 57
19 Determination of available chlorine content in detergents (titrimetric method). 62
20 Determination of free alkali content in detergents... 64
21 Determination of dry sodium soap content in detergents... 66
22 Determination of high and low temperature stability of detergents... 69
23 Determination of odour of detergents... 69
24 Determination of colour and appearance of detergents... 70
25 Test result report requirements... 70
Annex A (Informative) Structural changes of this standard with respect to ISO
standards... 71
Annex B (Informative) Technical differences between this standard and ISO
standards adopted and their causes... 74
Annex C (Informative) Identification test of alkylphenol ethoxylates... 78
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 13173-2008 Surface active agents – Detergents - Testing
methods. The following main technical changes have been made with respect to GB/T
13173-2008.
-- The sample reduction method of block sample is added (see 4.2.4);
-- The specimen treatment of phosphorus molybdenum blue colorimetry in the
determination of total phosphorus oxide content is modified (see 6.2.4.2; 6.2.4.2
of Edition 2008);
-- The extraction of ethanol solution in the determination of total active substance
content is modified (see 7.4.1.1; 7.5.1.1 of Edition 2008);
-- The procedure of determining sodium oxide in the determination of total active
substance content is modified (see 7.4.1.2; 7.5.1.2 of Edition 2008);
-- The application of mixed bed resin in the determination of non-ionic surface active
agent content is added (see 8.2.1.3 and 8.4.1.3);
-- The relative foaming power determination in the determination of foaming power
is added (see 11.7);
-- The determination of relative enzyme activity or content of protease is deleted (see
Clause 18 of Edition 2008);
-- The determination of alkylphenol ethoxylates content in detergents is added (see
Clause 18);
-- The determination of free alkali content in detergents is added (see Clause 20);
-- The determination of dry sodium soap content in detergents is added (see Clause
21);
-- The determination of high and low temperature stability of detergents is added
(see Clause 22);
-- The determination of odour is added (see Clause 23);
-- The determination of colour and appearance is added (see Clause 24);
-- The informative annex “Identification test of alkylphenol ethoxylates” is added
(see Annex C).
This standard has been redrafted and modified in relation to ISO 607.1980 Surface
active agents and detergents -- Methods of sample division, ISO 697.1981 Surface
active agents -- Washing powders -- Determination of apparent density -- Method by
measuring the mass of a given volume, ISO 4313.1976 Washing powders --
Determination of total phosphorus oxide content -- Quinoline phosphomolybdate
gravimetric method, ISO 4321.1977 Washing powders -- Determination of active
oxygen content -- Titrimetric method, ISO 4325.1990 Soaps and detergents --
Determination of chelating agent content -- Titrimetric method, and ISO 21264.2019
Surface active agents -- Detergents -- Determination of alkylphenol ethoxylates.
This standard is changed largely in terms of structure due to the integration of several
international standards; the comparison between this standard and the international
standards in clause/subclause number is listed in Annex A.
Technical differences have been made in this standard with respect to the above
international standards, and relevant technical differences and their causes have been
listed in Annex B.
This standard was proposed by China National Light Industry Council.
This standard shall be under the jurisdiction of the National Technical Committee on
Surfactant and Detergent of Standardization Administration of China (SAC/TC 272).
The drafting organizations of this standard. China Daily Chemical Research Institute
Co., Ltd., Shanghai Kaimi Technology Co., Ltd., Blue Moon (China) Co., Ltd.,
Unilever (China) Co., Ltd., Shenzhen Bagmei Biotechnology Co., Ltd., Zhejiang Keli
Technology Co., Ltd., Xiamen Amber Daily Chemical Co., Ltd. Technology Co., Ltd.,
South China University of Technology.
The main drafters of this standard. Yao Chenzhi, Li Xiaoting, Yao Yizhong, Yu Wen,
He Qiong, Li Xiaohui, Li Xiaorui, Zhang Qing, Guo Hongtao, Feng Wenxi, Sheng Jing
Yuan, Fang Xiyan.
The previous edition of this standard is as follows.
-- GB/T 13173-2008.
Surface active agents - Test methods for detergents
1 Scope
This standard describes the test methods for indexes of surface active agents and
detergents, such as sample reduction, particle size, total phosphorus oxide content, total
active substance content, non-ionic surface active agent content, various phosphate
content, toluenesulfonate content, foaming power, chelating agent (EDTA) content,
apparent density, whiteness, moisture and volatile matter content, active oxygen content,
4A zeolite content, alkylphenol ethoxylates content, effective chlorine content, free
alkali content, dry sodium soap content, stability at high and low temperature, odour,
colour and appearance, etc.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 6003.1 Test sieves -- Technical requirements and testing -- Part 1.Test
sieves of metal wire cloth (GB/T 6003.1-2012, ISO 3310-1.2000,
MOD)
GB/T 6682 Water for analytical laboratory use -- Specification and test
methods (GB/T 6682-2008, ISO 3696.1987, MOD)
JJG 512 Whiteness meters
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
The sample that has been obtained by reducing the quantity of another sample without
change of composition
The sample that is prepared at the same time as, and equivalent to, the laboratory sample,
which is acceptable to the parties concerned, and retained for use as a laboratory sample
if a disagreement occurs
4 Reduction of sample
The procedure specified is applicable to powders, including spray-dried powders, and
particularly, those that contain additives that have been introduced after the drying
process.
It is preferable for the analysis or test to be carried out as soon as possible after sampling.
If this is not possible, then, according to the intended purpose of the reduced sample,
place it immediately in an airtight bottle or flask of glass or plastics materials; and
determine (do not use metal containers) and record its mass.
5 Determination of particle size of powdered detergents
During the particle size test, the reduction of the sum (iB) of the
mass of the residual specimens on each layer of sieve and in the tray compared with the
mass of the input specimens (m) shall not be greater than 1%, otherwise it shall be re-
measured.
6 Determination of total phosphorus oxide content in detergents
During the analysis, use only reagents of recognized analytical grade and only grade III
water or above specified in GB/T 6682.
In parallel with the determination, carry out a blank test following the same procedure
and using the same quantities of all the reagents but omitting the specimen. The mass
of the precipitate shall not be greater than 1.5 mg.
7 Determination of total active substance content in detergents
Weigh and accurate the specimen (about 2g for powder and granular samples and about
5g for liquid and paste samples) to 0.001g; place it in a 150 mL beaker (7.3.5); add 5
mL of distilled water, and stir continuously with a glass rod to disperse the solid
particles and break the clumps until there are no obvious particles (see note for liquid
and paste samples).
8 Determination of non-ionic surface active agent content in detergents (ion exchange method)
Separate ethanol solute according to 7.4.1.1.
After the determination of two parallel specimens, the anion and cation exchange resins
can be regenerated separately and reused. The mixed bed resin is discarded when used.
9 Separation determination of various phosphates content in detergents (ion exchange column chromatography)
After injecting the specimen solution into anion exchange resin column, first elute the
cation and non-ionic surface active agents with water; then elute with potassium
chloride solution with increasing concentration in turn to separate orthophosphate,
pyrophosphate, tripolyphosphate, trimetaphosphate and polyphosphate, which are
determined by phosphorus molybdenum blue colorimetry after hydrolyzed.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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