ISO 3177:1975
Withdrawn
Potassium hydroxide for industrial use — Determination of chlorides content — Photometric method
Hardcopy , PDF
English, French
03-01-1975
04-12-2019
Applicable to products having contents, expressed as chlorine, between 2 mg/kg and 50 mg/kg. For contents exceeding 50mg/kg the method specified in ISO 992 shall be used. The principle consists in quantitative displacement of the thiocyanate (SCN- ) ions of the mercury(II) thiocyanate by the cloride (Cl- ) ions contained in the test portion. Reaction of the thiocyanate ions with iron(III) nitrate to form iron(III) thiocyanate (red). Photometric measurement of the colour at a wavelength of about 450 nm.
| Committee |
ISO/TC 47
|
| DocumentType |
Standard
|
| Pages |
3
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| BS 5634:1978 | Similar to |
| NBN T 03 197 : 1980 | Identical |
| NFT 20 375 : 77 FD | Identical |
| I.S. EN 60993:2002 | ELECTROLYTE FOR VENTED NICKEL-CADMIUM CELLS |
| EN 60993:2002 | Electrolyte for vented nickel-cadmium cells |
| CEI EN 60993 : 2004 | ELECTROLYTE FOR VENTED NICKEL-CADMIUM CELLS |
| IEC 60993:1989 | Electrolyte for vented nickel-cadmium cells |
| BS EN 60993:2002 | Electrolyte for vented nickel-cadmium cells |
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