BS 4993-1:1974
Methods of test for aluminium fluoride for industrial use - Determination of fluorine content

Standard No.

BS 4993-1:1974

Release Date

1974

Published By

British Standards Institution (BSI)

Status

Be replaced

Replace By

BS 4993-1:1974(2011)

Latest

BS 4993-1:1974(2011)

Scope

Fusion of a test portion with sodium carbonate and separation of the fluorine by distillation with sulphuric acid. Titration of the distillate with thorium nitrate solution using either sodium alizarinsulphonate with or without methylene blue as masking agents, or methylthymol blue as indicator.

BS 4993-1:1974 history

• 0000 BS 4993-1:1974(2011)
• 1974 BS 4993-1:1974 Methods of test for aluminium fluoride for industrial use - Determination of fluorine content