This standard was last reviewed and confirmed in 2022.
Therefore this version remains current.
Abstract
PreviewApplicable 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.
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Status: PublishedPublication date: 1973-12
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Edition: 1Number of pages: 5
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- ICS :
- 71.100.10 Materials for aluminium production
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en
| Format | Language | |
|---|---|---|
| std 1 40 | ||
| std 2 40 | Paper |
- CHF40
Life cycle
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Now
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Preliminary
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Proposal
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Preparatory
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Committee
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Enquiry
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Approval
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Publication
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Review
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95
Withdrawal
Corrigenda / Amendments
PublishedISO 2865:1973/Cor 1:1991
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