http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105294544-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-30 |
| filingDate | 2015-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105294544-B |
| titleOfInvention | A kind of preparation method of high purity sodium picosulfate |
| abstract | The invention belongs to field of medicine and chemical technology, specifically related to a kind of preparation method of high purity sodium picosulfate, this method mainly includes 2 pyridine carboxaldehydes (compound 2) and phenol (compound 3) is condensed to yield 4 ', 4 " dihydroxydiphenyls (2 pyridine) methane (compound 4) and ortho isomer 2 ', 4 " dihydroxydiphenyls (2 pyridine) methane (compound 5), compound 4 and the water/tetrahydrofuran of compound 5 dissolve, adjust pH to 8.0 8.5, plus iron ammonium sulfate to solution is in light blue, then regulation pH value is 6.5 7.0, there are a large amount of solids to separate out, suction filtration, isolated high-purity compound 4, further synthesize picosulfate sodium. |
| priorityDate | 2015-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 63.