Силикаты натрия и калия технические. Приготовление раствора веществ, плохо растворимых в кипящей воде, и определение содержания водонерастворимых веществ
Название (англ.):
Sodium and potassium silicates for industrial use; Preparation of solution of products not easily soluble in boiling water and determination of matter insoluble in water
Описание (англ.):
The method is applicable to products corresponding to the general formula M2O . xSiO2, where the values of x lie between 1,5 and 3,5 in the case of sodium silicates and 1,9 and 3,9 in the case of potassium silicates. Because of the difficulty ancountered in dissolvingfine particles of these products, the sample is first sieved to remove these fines. The procedure consists in dissolution of the test portion in carbon dioxide-free water, by treatment in an autoclave. Filtration and weighing of the insoluble matter on a tared filter crucible. Dilution of the filtrate to a given volume, from which aliquot samples are taken in order to carry out the different determinations.
Дата введения:
01.06.72
Код КГС:
Л19
Код ОКСТУ:
2114;2109
Код ОКС(МКС):
71.060.50
Код ОКП:
2114;2109
Нормативные ссылки:
AMD 3875-1981, EQV*BS 6092 PART 6-1981, EQV*NBN T 03-238-1980, EQV*NF T20-519-1973, EQV*NP-1489-1977, EQV*SFS-ISO 2122(1988/SFS), EQV
Ключевые слова:
CHEMICAL ANALYSIS AND TESTING CHEMICAL TESTS CHEMICALS DISSOLUTION DISSOLVING POTASSIUM POTASSIUM SILICATES SODIUM SODIUM SILICATES SOLUBILITY SOLUBLE MATTER CHEMICAL ANALYSIS AND TESTIN