| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6bd0cdbc5c67cf4957ed83c89140748e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G28-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B30-04 |
| filingDate |
2000-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_36cd70df3fd9202e9115e2b94c5fcc4a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1b4a0a994536f803a4f69e613a4edb47
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a17f18420f3ce234f6be003ceed797c9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3b30c628128f3cfaeb799ed944f91930 |
| publicationDate |
2002-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2002193619-A |
| titleOfInvention |
Method for producing arsenous acid |
| abstract |
PROBLEM TO BE SOLVED: To provide a method for producing arsenous acid from a solution containing arsenic acid and arsenous acid, which is high in quality with little attachment of impurities, has a large particle diameter, and has good handling properties during packing and filling. SOLUTION: When arsenic acid in a solution containing arsenic acid and arsenous acid is reduced to arsenite with sulfurous acid gas, the total concentration of pentavalent and trivalent arsenic is controlled to 40 to 50 g / l. Arsenous acid precipitated and recovered by the reduction of arsenic acid has a large particle size, and high purity arsenous acid can be obtained by washing and washing away attached impurities. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9885095-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10370739-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11124857-B2 |
| priorityDate |
2000-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |