http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104192906-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G37-04 |
| filingDate | 2014-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104192906-B |
| titleOfInvention | A kind of Sodium chromate prepares the method for chromium chloride hexahydrate |
| abstract | The invention discloses a kind of method that Sodium chromate prepares chromium chloride hexahydrate, it comprises: the Sodium chromate aqueous solution and reductive agent are placed in a reaction vessel, and slowly drips hydrochloric acid when control temperature reaches 115-125 DEG C with stirring action; After adding hydrochloric acid, first the temperature of reaction soln controlled at 110-140 DEG C and make Sodium chromate, reductive agent and hydrochloric acid reaction first Preset Time with stirring action, then control at 80-100 DEG C and make to have reacted reaction soln recurring second Preset Time of the first Preset Time with stirring action; Adding alkali solution to the reaction soln after overcuring regulates the pH value of reaction soln at 6.5-7.5, then filters and obtains intermediate product, and described intermediate product adds hydrochloric acid again and reacts after washing; Reaction soln step 3 obtained carries out evaporation concentration, crystallizing at room temperature, the centrifugal oven dry of crystal obtained chromium chloride hexahydrate afterwards successively.Present invention process is simple, and material cost is low, and the production method of chromium chloride hexahydrate prepared by alternative chromic trioxide. |
| priorityDate | 2014-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.