Chloroform for industrial use — List of methods of test
Specifies the sampling, the determination of distillation characteristics, the determination of density at 20 °C, the determination of water, the measurement of colour and the determination of acidity. The determination of distillation characteristics indicates either the temperatures corresponding to the collection of each of two volumes of distillate, V0 and V1, or the difference between these…
Liquid halogenated hydrocarbons for industrial use — Determination of acidity — Titrimetric method
The method does not apply when the halogenated materials hydrolyse at ambient temperature. The principle is based on the titration of the acidity of the aqueous extract from a test portion with a standard volumetric sodium hydroxide solution in the presence of bromocresol green as indicator. - Replaces ISO Recommendation R 1393-1970.
Liquid halogenated hydrocarbons for industrial use — Determination of cloud point
Specifies a simple method for detecting the presence of certain impurities (generally water) which, dissolved at ambient temperature, cause the formation of cloudiness when the product is cooled to a sufficiently low temperature. The principle consists in determination of the temperature at which cloudiness appears in the clear sample, when it is gradually cooled under specified conditions. -…
Phthalic anhydride for industrial use — Methods of test — Part 1: General
This document also specifies a method to be used for the determination of the crystallizing point. Before carrying out the analysis and tests, the sample shall be grind to a fine powder and mixed thoroughly. Exposure to moist air may lead to the formation of phthalic acid. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.
Phthalic anhydride for industrial use — Methods of test — Part 2: Measurement of colour of the molte...
The principle is based on the measurement of colour, by the method specified in ISO 2211, of a test portion in the molten state. The results are expressed in Hazen units. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.
Phthalic anhydride for industrial use — Methods of test — Part 3: Measurement of colour stability
The principle is based on the measurement of the colour of a test portion, by the method specified in ISO 2211, after a specified heat treatment. The test sample is maintained in a colorimetric tube in an electrically heated aluminium block, controlled at (250 3) °C for 90 min, in the molten state. The results are expressed in Hazen units. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R…
Phthalic anhydride for industrial use — Methods of test — Part 4: Measurement of colour after treatm...
The test sample is treated with sulphuric acid solution in a conical flask in boiling water bath for 3 h. The colour is measured by the method specified in ISO 2211. The results are expressed in Hazen units. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.
Phthalic anhydride for industrial use — Methods of test — Part 5: Determination of free acidity — Po...
The principle of the method consists in the potentiometric titration of a test portion not exceeding 10 g and containing not more than 0.150 g of phthalic acid, with a standard volumetric solution of triethylamine in anhydrous butanone. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.
Phthalic anhydride for industrial use — Methods of test — Part 6: Determination of phthalic anhydrid...
The principle consists in the dissolution of a test portion in an excess of standard volumetric sodium hydroxide solution and back-titration of the excess with a standard volumetric hydrochloric acid solution using phenolphthalein as indicator. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.
Phthalic anhydride for industrial use — Methods of test — Part 7: Determination of maleic anhydride ...
The principle consists in the dissolution of a test portion in acetone, removal of 1,4-naphthoquinone present in the solution by extraction with benzene. Polarographic measurement of the aqueous solution and determination of the mass of maleic anhydride by means of the calibration graph. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.
