ISO 2997:1974
Current
The latest, up-to-date edition.
Phosphoric acid for industrial use — Determination of sulphate content — Method by reduction and titrimetry
Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users
English, French
01-11-1974
Applicable to products having sulphate contents equal to or more than 0.0005 % (m/m). Analysis by reduction of the sulphate to sulphide by a mixture of hydriodic acid and hypophosphorus acid. Absorption of the hydrogen sulphide evolved in a mixture of acetone and sodium hydroxide solution. Titration with a standard volumetric solution of mercury(II) acetate in the presence of dithizone as indicator. Has also been approved by the IUPAC.
| Committee |
ISO/TC 47
|
| DevelopmentNote |
Supersedes ISO R 847 (04/2001)
|
| DocumentType |
Standard
|
| Pages |
3
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| NBN EN 1208 : 2005 | Identical |
| NBN T 03 263 : 1980 | Identical |
| NBN EN 1206 : 2005 | Identical |
| NBN EN 1202 : 2005 | Identical |
| NBN EN 1207 : 2005 | Identical |
| NBN EN 1209 : 2004 | Identical |
| PN ISO 2997 : 2000 | Identical |
| BS 4258-3:1989 | Similar to |
Please Login or Create an Account so you can add users to your Multi user PDF Later.
Important note : All end users must be registered with an Account prior to user licenses being assigned.
Users cannot be edited or removed once added to your Multi user PDF.