CSA Group Cryolite (natural and artificial) - Determination of aluminium content - 8- Hydroxyquinoline gravimetric method ISO 2367:1972

Description
The method can be applied provided the Fe203 content does not exceed 0,15 . It can also be applied to products with molar ratio of NaF to AlF3 between approximately 3 and 1,7. The principle consists in dissolution of a test portion by acid fusion using potassium pyrosulphate and recovery by hydrochloric acid. Separation of the mixture by precipitation of aluminium, with ammonium benzoate , in an acetic reducing medium. Dissolution of the precipitate and reprecipitation as aluminium tri(quinolin-8-oxide ) in an acetic buffer medium. Filtration, washing, drying of the precipitate at a temperature of 130 °C and weighing.
  • Cryolite (natural and artificial) - Determination of aluminium content - 8- Hydroxyquinoline gravimetric method - ISO 2367:1972 - CSA Group
    CSA Group
Description
The method can be applied provided the Fe203 content does not exceed 0,15 . It can also be applied to products with molar ratio of NaF to AlF3 between approximately 3 and 1,7. The principle consists in dissolution of a test portion by acid fusion using potassium pyrosulphate and recovery by hydrochloric acid. Separation of the mixture by precipitation of aluminium, with ammonium benzoate , in an acetic reducing medium. Dissolution of the precipitate and reprecipitation as aluminium tri(quinolin-8-oxide ) in an acetic buffer medium. Filtration, washing, drying of the precipitate at a temperature of 130 °C and weighing.

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Cryolite (natural and artificial) - Determination of aluminium content - 8- Hydroxyquinoline gravimetric method - ISO 2367:1972 - CSA Group
CSA Group
Toronto, Ontario, Canada
Cryolite (natural and artificial) - Determination of aluminium content - 8- Hydroxyquinoline gravimetric method
ISO 2367:1972
Cryolite (natural and artificial) - Determination of aluminium content - 8- Hydroxyquinoline gravimetric method ISO 2367:1972
The method can be applied provided the Fe203 content does not exceed 0,15 . It can also be applied to products with molar ratio of NaF to AlF3 between approximately 3 and 1,7. The principle consists in dissolution of a test portion by acid fusion using potassium pyrosulphate and recovery by hydrochloric acid. Separation of the mixture by precipitation of aluminium, with ammonium benzoate , in an acetic reducing medium. Dissolution of the precipitate and reprecipitation as aluminium tri(quinolin-8-oxide ) in an acetic buffer medium. Filtration, washing, drying of the precipitate at a temperature of 130 °C and weighing.

The method can be applied provided the Fe203 content does not exceed 0,15 . It can also be applied to products with molar ratio of NaF to AlF3 between approximately 3 and 1,7. The principle consists in dissolution of a test portion by acid fusion using potassium pyrosulphate and recovery by hydrochloric acid. Separation of the mixture by precipitation of aluminium, with ammonium benzoate , in an acetic reducing medium. Dissolution of the precipitate and reprecipitation as aluminium tri(quinolin-8-oxide) in an acetic buffer medium. Filtration, washing, drying of the precipitate at a temperature of 130 °C and weighing.

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Technical Specifications

  CSA Group
Product Category Standards and Technical Documents
Product Number ISO 2367:1972
Product Name Cryolite (natural and artificial) - Determination of aluminium content - 8- Hydroxyquinoline gravimetric method
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