http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2146629-A5
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4913aed22e539fca8ce3db64a46ee451 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_62e80ed49807059285d848ce75f388c3 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-22 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G37-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-66 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G37-02 |
| filingDate | 1971-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1973-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1973-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | FR-2146629-A5 |
| titleOfInvention | Elimination of hexavalent chromium - from wastes by hypophosphite in acid medium |
| abstract | Wastes contg. hexavalent Cr cpds. are transformed into cpds. in which the Cr has a valency 6 by reacting with a hypophosphite or cpd. in which P has a valency of 1, in an acid medium of pH ca. 2, and then making the soln. alkaline to ppte the Cr., generally in the form of the hydroxide of trivalent Cr. The source of hypophosphite is pref. a used bath contg. hypophosphite such as that used for nickel-plating. The treated waste, is filtered to remove Cr cpds., and is then suitable for discharge to rivers. |
| priorityDate | 1971-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 21.