GB/T 6370-2012_English: PDF (GB/T6370-2012)
| Standard ID | USD | BUY PDF | Lead-Days | Standard Title (Description) | Status |
| GB/T 6370-2012 | 189 |
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Surface active agents -- Anionic surface active agents -- Determination of solubility in water
| Valid |
| GB/T 6370-1996 | 279 |
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Surface active agents--Anionic surface active agents--Determination of solubility in water
| Obsolete |
| GB 6370-1986 | 199 |
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Surface active agents--Anionic surface active agents--Determination of solubility in water
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| Standard ID | GB/T 6370-2012 (GB/T6370-2012) | | Description (Translated English) | Surface active agents. Anionic surface active agents. Determination of solubility in water | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G72 | | Classification of International Standard | 71.100.40 | | Word Count Estimation | 8,846 | | Older Standard (superseded by this standard) | GB/T 6370-1996 | | Quoted Standard | GB/T 6372-2006; GB/T 6682-2008 | | Adopted Standard | ISO 6839-1982, MOD | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies a said anionic surfactant solubility in water is a function of the curve of the methods to obtain it at a given temperature the solubility. This standard applies to the pure surfactant, also suitable for industrial products and liq |
GB/T 6370-2012
Surface active agents. Anionic surface active agents. Determination of solubility in water
ICS 71.100.40
G72
National Standards of People's Republic of China
Replacing GB/T 6370-1996
Surfactants Anionic surfactants
Determination of solubility in water
(ISO 6839. 1982, Anionicsurfaceactiveagents-
Determinationofsolubilityinwater, MOD)
Issued on. 2012-12-31
2013-08-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 6370-1996 "surfactant anionic surfactant solubility in water Determination," and
GB/T 6370-1996 compared to the main changes are as follows.
--- Remove the ISO foreword;
--- To adopt standard degree of modification adopted;
--- Added "Terms and definitions" (see Chapter 3);
--- Increase the informative Appendix A.
This standard uses redrafted law revision using ISO 6839. 1982 "anionic surfactant solubility in water determination."
This standard and ISO 6839. 1982, compared with more adjustment in the structure, listed in Appendix A of this standard and ISO 6839. 1982's
Reg number control list.
This standard and ISO 6839. 1982 technical differences and their reasons are as follows.
Love --- on normative references, this standard has been adjusted technical differences, in order to adapt to China's technical conditions, adjustment
Focus is reflected in the status of Chapter 2, "Normative references", the specific adjustments are as follows.
● equivalents using the international standard GB/T 6372-2006 instead of ISO 607 (see Chapter 4);
● increase cited GB/T 6682-2008 (see 5.2).
--- Increasing the terms and definitions, to be explained in terms and definitions covered by this standard, in order to allow standard users to better understand the
meaning.
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee Chemistry (specialty) surfactant Technical Committee (SAC/TC63/SC8) centralized.
This standard was drafted. Zhejiang Real Technology Co., Ltd.
The main drafters of this standard. Tangfu Wei, Jin Yifeng, Wang Shengli, Wang Yuefen.
This standard replaces the standards previously issued as follows.
--- GB/T 6370-1986, GB/T 6370-1996.
Surfactants Anionic surfactants
Determination of solubility in water
1 Scope
This standard specifies a representation of anionic surfactants in water solubility curve as a function of the method, which it obtained in
To solubility at a given temperature.
This standard applies to pure surfactant, but also for industrial products and liquid anionic surfactant complex products, as long as these products
The solution is clear and transparent, color is not too deep.
With the solubility curve of pure product obtained can be used to determine Clough (Krafft) temperature.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 6372-2006 surfactant and detergent sample division method (ISO 607. 1980, IDT)
GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Solubility in water solubilityinwater
Under certain temperature, the maximum level of surfactant dissolved in water quality expressed as a percentage.
3.2
Kraft (Krafft) temperature Kraffttemperature
Solubility steep temperature ionic surfactants (in fact within a narrow temperature range). At this temperature, which was dissolved
It is equal to the critical micelle concentration.
3.3
The solubility limit temperature limitingtemperatureofsolubility
When the same two concentrations of the solution in a water bath to reach equilibrium, the supernatant is still clear, turbid or turbid solution was still very slowly from the cloud to clear, or by the
Qing temperature water bath time becomes cloudy.
3.4
Solubility curve curveofsolubility
Depending on the concentration range set by different amounts of sample was weighed, its solubility limit temperature were measured and plotted and the corresponding concentration of dissolved
Degree temperature limit is a function of the curve.
4 Sampling
According to the provisions of GB/T 6372-2006 sampling, sample preparation and storage.
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