http://rdf.ncbi.nlm.nih.gov/pubchem/patent/HU-T61404-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5ce7bde1bc2d14324c60b4b689690280 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N31-164 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N27-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N31-16 |
| filingDate | 1991-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6fd7957509045a1ecb2bbf85505da20f |
| publicationDate | 1992-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | HU-T61404-A |
| titleOfInvention | Detecting nitrite in phosphatizing solutions |
| abstract | The procedure for determining nitrite in aqueous phosphatising solutions containing simple and/or complex fluoride is to acidify a bath sample with sulphuric acid, nitric acid and/or perchloric acid and to titrate in the presence of an at least 5-fold molar excess of aluminium ions, based on the fluoride content of the phosphatising bath, using electrical indication with the aid of a redox electrode by the cerium(IV) sulphate method. Preferably the bath sample is acified with sulphuric acid and the aluminium ions are introduced as aluminium sulphate octadecahydrate. The method of determination can advantageously be used for controlling metering devices for adding nitrite-containing replenishment concentrate to phosphatising solutions. |
| priorityDate | 1990-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.