| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B7-196
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B7-195
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B7-19 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B7-19 |
| filingDate |
1990-09-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_126436231b02a5ffe724c8e30615af91 |
| publicationDate |
1991-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0426286-A1 |
| titleOfInvention |
Process for purifying hydrogen fluoride |
| abstract |
A process for preparing hydrogen fluoride that involves treating anhydrous hydrogen fluoride containing primarily trivalent arsenic impurities with a sulfur compound capable of providing sulfide ions (e.g., H₂S) so as to precipitate the arsenic (i.e., as As₂S₃) followed by separation and recovery (e.g., by distillation or filtration) of purified anhydrous hydrogen fluoride. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9260306-B2 |
| priorityDate |
1989-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |