Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosp...
Specifies a method applicable to products having phosphorus contents equal to or greater than 0,002 % (m/m). The principle is based on alkaline fusion of a test portion with a mixture of sodium carbonate and boric acid, dissolution of the fused mass in nitric acid, neutralization of suitable aliquot portion with sodium hydroxide solution, reaction with acid ammonium molybdate solution to form a…
Abrasive products — Grain sizes of diamond or cubic boron nitride
Establishes a method for checking the grain size of diamond or cubic boron nitride as used for the manufacture of industrial products. Applies to grains of particle size between 41 and 1 180 um. Gives the grit size designation, the size limits, the sieves to be used in determining them and the procedure to be adpted for checking the size.
Applicable to products which consist essentially of xylene isomers ÄC6H4 -(CH3 )2 Ü and ethylbenzene (C6H5 -C2 H5). Specifies the requirements and test methods. The required characteristics are shown in a table.
Methyl chloride and ethyl chloride for industrial use — Methods of test
Specifies procedures for determining the acidity , the residue on evaporation and the water content by the Karl Fischer method. The acidity test is applicable to products having acidities, expressed as hydrochloric acid, between 1 and 50 mg/kg. For determination of ressidue on evaporation the method specified in ISO 2210 is recommended which is applicable to products leaving a residue on…
Fluorinated hydrocarbons for industrial use — Determination of non-volatile residue
Specifies a method, the principle of which is based on evaporation of a test portion under specified conditions, using special apparatus, and weighing of the residue after evaporation. Details the procedure and provides information on the expression of results and the data to be included in the test report.
Inorganic chemical products for industrial use — General method for determination of chloride conten...
Covers a method enabling quantities of chloride eceeding 1 mg in the test portion to be determined with an absolute error of 0,2 to 0,5 mg, according to the concentration of the standard volumetric solution used. The principle of determination is based on the conversion of chloride ions into weakly ionized mercury(II) chloride, using highly ionized standard volumetric mercury(II) nitrate solution…
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of sulph...
Covers a method, the orinciple of which consists in preparing tablets from a mixture of the test portion and a binder and measuring the intensity of the K line emitted by the sulphur. The measured intensity is then compared with the intensity of emission of standard tablets of known sulphur content. The method is applicable to products having sulphur contents between 0,01 and 2 % (m/m).
