Reference number
ISO 23596:2023
International Standard
ISO 23596:2023
Rare earth — Determination of rare earth content in individual rare earth metals and their compounds — Gravimetric method
Edition 1
2023-08
Preview
ISO 23596:2023
76374
недоступно на русском языке
Опубликовано (Версия 1, 2023)

ISO 23596:2023

ISO 23596:2023
76374
Язык
Формат
CHF 63
Пересчитать швейцарские франки (CHF) в ваша валюта

Тезис

This document specifies a gravimetric method for the determination of rare earth content in 11 kinds of individual rare earth metals (lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium and yttrium) and their compounds, such as oxides, carbonates, hydroxides, oxalates, chlorides and fluorides.

The determination ranges for the rare earth content in mass fraction are as follows:

     rare earth metal: 98,0 % (mass fraction) to 99,5 % (mass fraction);

     rare earth oxide: 95,0 % (mass fraction) to 99,8 % (mass fraction);

     rare earth oxalate: 95,0 % (mass fraction) to 99,8 % (mass fraction);

     rare earth fluoride: 75,0 % (mass fraction) to 90,0 % (mass fraction);

     other compounds (i.e. rare earth hydroxide, rare earth chloride and rare earth carbonate): 40,0 % (mass fraction) to 70,0 % (mass fraction).

It does not apply to individual rare earth metals and their compounds when:

a)       the matrixes of the sample are erbium, thulium, ytterbium and lutetium;

b)       the content of thorium or lead in the sample is greater than 0,1 % in mass fraction.

Общая информация

  •  : Опубликовано
     : 2023-08
    : Опубликование международного стандарта [60.60]
  •  : 1
  • ISO/TC 298
    77.040.30 
  • RSS обновления

Жизненный цикл

Появились вопросы?

Ознакомьтесь с FAQ