GB/T 29882-2013Testing method for classification of hazardous materials - Partition coefficient of 1-octanol/water (English PDF)
杂项危险物质和物品分类试验方法 正辛醇/水分配系数
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 12, 2013
Implementation date
May 1, 2014
Scope
GB/T 29882-2013 is the English-translated version of 杂项危险物质和物品分类试验方法 正辛醇/水分配系数.
GB/T 29882-2013 is the Chinese standard "Testing method for classification of hazardous materials - Partition coefficient of 1-octanol/water".
Its scope clause reads: This standard specifies the n-octanol/water partition coefficient of the test principle, test methods for transport of dangerous goods Miscellaneous dangerous substances and articles, Test procedures, test results and conclusions of the report data.
This standard applies to test methods for stirring octanol/water partition coefficient of determination of pure organic compounds with a slow, suitable for n-octyl Alcohol/water partition coefficient of determination of value lgPOW compound between 5 and 8.2 of the POW value. Its clauses include terms and definitions; test principle.
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Document preview — GB/T 29882-2013
National Standard of the People's Republic of China
- Classification
- A 80
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Terms and definitions
- 2.1 Partition coefficient
- 2.2 N-octanol/water partition coefficient of 1-octanol/waterpartitioncoefficient
- 3 Test principle
- 4.1 test substance
1 Scope
This standard specifies the n-octanol/water partition coefficient of the test principle, test methods for transport of dangerous goods Miscellaneous dangerous substances and articles,
Test procedures, test results and conclusions of the report data.
This standard applies to test methods for stirring octanol/water partition coefficient of determination of pure organic compounds with a slow, suitable for n-octyl
Alcohol/water partition coefficient of determination of value lgPOW compound between 5 and 8.2 of the POW value.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1 Partition coefficient
Than the equilibrium concentration of dissolved substances and do not reach the two-phase medium.
2.2 N-octanol/water partition coefficient of 1-octanol/waterpartitioncoefficient
Substance in n-octanol/water two-phase medium than concentrations reach equilibrium in POW expressed. POW dimensionless, usually base 10
Logarithm (lgPOW) represented.
3 Test principle
Under a constant temperature, after the test substance in the system n-octanol and an aqueous phase consisting of the interaction of an equilibrium state, the test substance is determined in two
Phase concentration calculated partition coefficient of the test substance. Test test substance, n-octanol and water should be heated slowly by stirring in a reaction vessel
Mixing equilibrium state (stirring speed can accelerate exchange between the different phases).
Test Method 4
4.1 test substance
4.1.1
The test substance should be pure substance; chemical reagents used should be analytical grade or higher purity.
4.1.2
The test substance should be known chemical composition, it is best recommended test substance purity of more than 99%, or known to determine the chemical composition and playback
Radio chemical purity of the radiolabelled test substance. If you use a shorter half-life tracers, decay should be amended. If it is radioactive
Isotope-labeled test substance should be used in specific chemical analytical methods for testing to determine the total dose of radiation directly with the test substance
Correlation.
4.1.3
Before conducting the test, can be applied to commercial software or test substance solubility ratio in both solvents to partition coefficients
Pre-estimates.
4.1.4
Before conducting the test, the test substance should be given information includes.
--- Chemical and structural formula;
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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