Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 108 Complex Formation Ability in Water written by OECD and published by OECD Publishing. This book was released on 1981-05-12 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes the polarographic method. The ability of a substance to form complexes with metals can be assessed by means of polarographic techniques which allow the determination of stability constants for some complexes. The ...
Download or read book Test No 108 Complex Formation Ability in Water written by Organisation for Economic Co-operation and Development and published by . This book was released on 1981 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes the polarographic method. The ability of a substance to form complexes with metals can be assessed by means of polarographic techniques which allow the determination of stability constants for some complexes. The polarographic method can be applied to substances with a water solubility greater than 10-5 M. This method is based on the fact that the reduction potentials of metal ions are shifted, usually to more negative values, as a result of complex formation. A minimum of four known concentrations of the chemical being tested should be investigated with a known concentration of metal ions. The chemical being tested should normally be present in at least a 25-fold excess over the metal ion concentrations. The current should be measured at applied potentials in the range - 0.2 V to -1.0 V. In order to detect complexes which form slowly, it is necessary to allow the solutions to stand under a nitrogen atmosphere for a minimum period of 24 hours. If the results are not significant, it is necessary to use methods based on different physicochemical principles, such as spectrophotometry or nuclear magnetic resonance spectrometry.
Download or read book OECD Guidelines for the Testing of Chemicals written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 111 Hydrolysis as a Function of pH written by OECD and published by OECD Publishing. This book was released on 2004-11-23 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes a laboratory test method to assess abiotic hydrolytic transformations of chemicals in aquatic systems at pH values normally found in the environment (pH 4 – 9). This Guideline is designed as a tiered approach; each tier ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 123 Partition Coefficient 1 Octanol Water Slow Stirring Method written by OECD and published by OECD Publishing. This book was released on 2006-07-11 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes the slow-stirring method, which permits the determination of the 1-octanol/water partition coefficient (POW) values up to a log POW of 8.2. The partition coefficient between water and 1-octanol (POW) is defined as the ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 120 Solution Extraction Behaviour of Polymers in Water written by OECD and published by OECD Publishing. This book was released on 2000-01-21 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes a method to analyse the solution/extraction behaviour of polymers in water, which uses the flask method with modifications. Three samples of 10 g of particles of the test substance are weighed into each of three vessels ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 105 Water Solubility written by OECD and published by OECD Publishing. This book was released on 1995-07-27 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes methods to determine the water solubility of test substances. The water solubility of a substance is the saturation mass concentration of the substance in water at a given temperature. This guideline addresses the ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 107 Partition Coefficient n octanol water Shake Flask Method written by OECD and published by OECD Publishing. This book was released on 1995-07-27 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes a method to determine experimentally Pow values in the range log Pow between -2 and 4 (occasionally up to 5). This method can not be used with surface-active materials. The partition coefficient is defined as the ratio ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 112 Dissociation Constants in Water written by OECD and published by OECD Publishing. This book was released on 1981-05-12 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes the methods allowing the determination of the dissociation constants in water. The dissociation is the reversible splitting into two or more chemical species which may be ionic. The determination of the dissociation ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 122 Determination of pH Acidity and Alkalinity written by OECD and published by OECD Publishing. This book was released on 2013-07-26 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes the procedure for the electronic determination of pH of an undiluted aqueous solution or dispersion, the pH of a dilution of a solution or dispersion in water, or the pH of a chemical diluted to end-use concentration ...
Download or read book OECD Guidelines for the Testing of Chemicals OECD Guidelines for the Testing of Chemicals Fifteenth Addendum 2004 written by OECD and published by OECD Publishing. This book was released on 2004-10-07 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The OECD Guidelines for the Testing of Chemicals are a collection of internationally agreed methods for testing the safety of chemicals and chemical preparations, including pesticides and industrial chemicals. This 2005 update contains 11 new and 3 revised guidelines.
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 117 Partition Coefficient n octanol water HPLC Method written by OECD and published by OECD Publishing. This book was released on 2004-11-23 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes the HPLC method, which permits to determine the partition coefficient (n-octanol/water) (Pow). Reverse phase HPLC is performed on analytical columns packed with a solid phase containing long hydrocarbon chains ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 103 Boiling Point written by OECD and published by OECD Publishing. This book was released on 1995-07-27 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes methods to determine the boiling point of test substances. The boiling point of a liquid is defined as the temperature (in K) at which the vapour pressure equals the standard atmospheric pressure 101.325 kPa. The ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 109 Density of Liquids and Solids written by OECD and published by OECD Publishing. This book was released on 2012-10-02 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline lists methods for determining the density of liquids and solids, giving only a succinct description of them. The density of a substance is the quotient of its mass and its volume and is expressed in SI units as kg/m3 at a ...
Download or read book OECD Guidelines for the Testing of Chemicals OECD Guidelines for the Testing of Chemicals Fourteenth Addendum May 2002 written by OECD and published by OECD Publishing. This book was released on 2002-08-14 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: The OECD Guidelines for the Testing of Chemicals provide a unique tool for assessing the potential effects of chemicals on human health and the environment. Accepted internationally as the standard methods for safety testing, the OECD Guidelines for ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 115 Surface Tension of Aqueous Solutions written by OECD and published by OECD Publishing. This book was released on 1995-07-27 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes methods to determine the surface tension (in N/m) of aqueous solutions. The methods are based on the measurement of the force which it is necessary to exert vertically on a stirrup or ring, in contact with the surface ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 113 Screening Test for Thermal Stability and Stability in Air written by OECD and published by OECD Publishing. This book was released on 1981-05-12 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes methods for determining storage stability of a substance with respect to heat and air. Two methods are applicable to homogeneous solid and liquid substances and to mixtures of these: the accelerated storage test and the ...