GB/T 3399-1982 - 中外标准 - - 1982/12 - 现行
GB/T 3398-1982 - 中外标准 - - 1982/12 - 作废
GB/T 3403-1982 - 中外标准 - - 1982/12 - 作废
ISO 1897-10-1982 - 中外标准 - - 1982/12 - 废止
This method is applicable to products having a dry residue after evaporation, greater than or equal to 0,005 % (m/m). The principleconsists in evaporation of a test portion in a platinum dish on a boiling water bath and drying of the residue in an oven at (105 +- 2) °C for 1 h. Replaces ISO Recommendation R 1900-1971.
ISO 7060-1982 - 中外标准 - - 1982/12 - 废止
A sample of liquid caprolactam, or a liquefied sample of crystalline caprolactam is cooled and the temperature at which crystallization occurs is observed.
ISO 754-1982 - 中外标准 - - 1982/12 - 废止
Gives general instructions and specifies methods of analysis. The methods to be used are determination of destillation yield, of bromine number, of arsenic content, of permanganate index, of dichromate index, the measurement of colour, titrimetric determination of acetic anhydride content, gravimetric determination of ash, spectrometric determination of phosphate content and visual limit tests for inorganic chlorides, sulphates and heavy metals including iron, sulphuric acid colour test. It results from the combination into one single decument of draft International Standard ISO/DIS 754 part 1 to 10; it cancels and replaces ISO Recommendation R 754-1968.
ISO 7059-1982 - 中外标准 - - 1982/12 - 现行
The spectrometric measurement of the absorbance of a 50 % caprolactam water solution is carried out at a wavelength of 290 nm. The absorbance, expressed in relation to an optical path length of 1 m, is given by a specified formula in which AO is the correction for the difference in absorbances of the cells; A1 is the absorbance of the test solution, and 1 is the optical path length, in centimetres, of the cell.
ISO 1387-1982 - 中外标准 - - 1982/12 - 废止
Gives general instructions and specifies methods od analysis. The methods to be used are determination of density at 20 °C, determination ofdry residue after evaporation on a water bath, measurement of colour, determination of distillation yield, determination of water content, detection of the alkalinity or acidity to phenolphthalein, spectrometric detection of content of carbonyl compounds in small amounts, titrimetric estimation of content of carbonyl compounds in moderate amounts, test for miscibility with water, determination of permanganate time and iodometric determination of methyl ketones. It results from the combination into one single document of draft International Standard ISO/DIS 1387 parts 1 to 7. Replaces ISO Recommendation R 1387-1970.
ISO 5921-1982 - 中外标准 - - 1982/11 - 废止
Establishes a standard layout for methods for the determination of volatile components and gives general information on these methods. Takes into account the general layout of methods of chemical analysis given in ISO 78/2 and the recommendations given in ISO 2718.
ISO 5918-1982 - 中外标准 - - 1982/11 - 废止
Describes a method applicable to products having inert gas content equal to or greater than 0,005 % (V/V). The principle is based on detection of inert gas from test portion s taken from the liquid or gaseous phase and analysis under such conditions that none of the gases are retained irreversibly by the stationary phase.