ISO 2865:1973 PDF

Aluminium oxide primarily used for the production of aluminium — Determination of boron content — Curcumin spectrophotometric method

Название (английский):

ISO 2865:1973

Aluminium oxide primarily used for the production of aluminium — Determination of boron content — Curcumin spectrophotometric method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 5
Дата публикации:: 1 декабря 1973 г.
Издание:: ISO IS 2865 edition 1 version 1
ICS:: 71.100.10

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Описание (английский):

Applicable to products having boron oxide contents of more than 0.0006 % (m/m). With sufficiently sensitive apparatus, the lower limit of application may be extended to 0.00008 % (m/m). The test portion is dissolved in phosphoric acid. Separation of the boron by distillation as methyl borate. Formation of a red coloured complex between the boron and the curcumin reagent at pH 7. Spectrophotometric measurement of the complex at a wavelength of about 550 nm.

Технические детали

Технический комитет: ISO/TC 226 - Materials for the production of primary aluminium
SKU: ISO 2865:1973

Abstract

Overview

ISO 2865:1973 specifies the curcumin spectrophotometric method for determining boron content in aluminium oxide primarily intended for aluminium production. This international standard, developed by ISO Technical Committee 47 (Chemistry), ensures analytical accuracy and consistency in quantifying boron in aluminium oxide, particularly when boron oxide (B₂O₃) content exceeds 0.0006% by mass. The method's sensitivity may be extended to measure as low as 0.00008% B₂O₃ with suitable apparatus. The process involves dissolution in phosphoric acid, separation of boron by distillation as methyl borate, formation of a red-colored curcumin-boron complex at neutral pH, and subsequent spectrophotometric measurement at approximately 550 nm.

Key Topics

Scope and Limitations
- Applicable to aluminium oxide products with B₂O₃ contents above 0.0006% (m/m)
- Lower detection limit can reach 0.00008% B₂O₃ with adequate instrumentation
Curcumin Spectrophotometric Method
- Dissolution of sample in phosphoric acid
- Distillation and separation as methyl borate
- Formation of red boron-curcumin complex at pH 7
- Spectrophotometric analysis at 550 nm
Sample and Reagent Requirements
- Strict use of high-purity reagents and precise preparation protocols
- Calibration using standard boron solutions
- Use of apparatus such as silica beakers, platinum dishes, and a controlled water bath
Quality Assurance
- Parallel blank tests and calibration curves to ensure accuracy
- Recommendations for reporting test results and documenting unusual occurrences

Applications

ISO 2865:1973 is a vital standard for industries and laboratories involved with aluminium oxide used in aluminium production. Accurate determination of boron content supports:

Quality Control:
- Monitoring boron levels prevents unwanted effects on aluminium final product characteristics.
- Helps meet strict industry and end-user purity requirements.
Process Monitoring:
- Routine analysis of aluminium oxide feedstocks to ensure compliance with technical specifications.
- Detection and quantification of trace boron to optimize production and reduce impurities.
Research and Development:
- Used in developing new materials or refining production processes that demand precise contaminant measurement.
Certification and Compliance:
- Provides an internationally recognized method for regulatory reporting and third-party quality assurance.

Related Standards

ISO/R 802: Aluminium oxide for aluminium production - Preparation and storage of test samples. This standard details sample handling, ensuring integrity before chemical analysis.
Other Relevant ISO Standards:
- Methods for chemical analysis of aluminium and aluminium oxides
- Spectrophotometric analysis procedures for trace elements in industrial materials
Industry Standards:
- National and sectoral methods for boron determination in refractory and metallurgical materials may reference or align with ISO 2865:1973.

Keywords: ISO 2865, aluminium oxide, boron determination, curcumin spectrophotometric method, aluminium production, chemical analysis, boron content, trace analysis, boron oxide, industrial standards, quality control, chemical testing procedures.

Overview

Key Topics

Scope and Limitations
- Applicable to aluminium oxide products with B₂O₃ contents above 0.0006% (m/m)
- Lower detection limit can reach 0.00008% B₂O₃ with adequate instrumentation
Curcumin Spectrophotometric Method
- Dissolution of sample in phosphoric acid
- Distillation and separation as methyl borate
- Formation of red boron-curcumin complex at pH 7
- Spectrophotometric analysis at 550 nm
Sample and Reagent Requirements
- Strict use of high-purity reagents and precise preparation protocols
- Calibration using standard boron solutions
- Use of apparatus such as silica beakers, platinum dishes, and a controlled water bath
Quality Assurance
- Parallel blank tests and calibration curves to ensure accuracy
- Recommendations for reporting test results and documenting unusual occurrences

Applications

ISO 2865:1973 is a vital standard for industries and laboratories involved with aluminium oxide used in aluminium production. Accurate determination of boron content supports:

Quality Control:
- Monitoring boron levels prevents unwanted effects on aluminium final product characteristics.
- Helps meet strict industry and end-user purity requirements.
Process Monitoring:
- Routine analysis of aluminium oxide feedstocks to ensure compliance with technical specifications.
- Detection and quantification of trace boron to optimize production and reduce impurities.
Research and Development:
- Used in developing new materials or refining production processes that demand precise contaminant measurement.
Certification and Compliance:
- Provides an internationally recognized method for regulatory reporting and third-party quality assurance.

Related Standards

ISO/R 802: Aluminium oxide for aluminium production - Preparation and storage of test samples. This standard details sample handling, ensuring integrity before chemical analysis.
Other Relevant ISO Standards:
- Methods for chemical analysis of aluminium and aluminium oxides
- Spectrophotometric analysis procedures for trace elements in industrial materials
Industry Standards:
- National and sectoral methods for boron determination in refractory and metallurgical materials may reference or align with ISO 2865:1973.

ISO 2865:1973 PDF

Технические детали

Abstract

Overview

Key Topics

Applications

Related Standards

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Abstract

Overview

Key Topics

Applications

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