| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b8be6a6c990669567cc455d32b00535e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-203 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-683
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-445
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C229-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F15-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-00 |
| filingDate |
2004-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2007-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bf9447bf553447cb0c2f3548c5773a59
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c7f1faa39c007c29a3cf3fa1a4339532
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2bd2d77f8f541248990023a3b37ea33f |
| publicationDate |
2007-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7211682-B2 |
| titleOfInvention |
Aqueous solution of a sodium salt of HEDTA |
| abstract |
The invention pertains to an aqueous solution of a sodium salt xNa + yH + of the chelating compound of formula I: n nwherein x=2.1–2.7, y=0.9–0.3, and x+y=3. The invention further pertains to a container comprising at least 0.5 kg of said aqueous solution and to a method of preparing an aqueous solution comprising at least 45 wt % of the sodium salt xNa + yH + of the chelating compound of formula I from Na 3 -HEDTA, comprising the steps of electrodialysing an aqueous solution containing less than 42 wt % of Na 3 -HEDTA using a bipolar membrane, thereby converting the trisodium salt solution to the solution of the sodium salt of formula I with x=2.1–2.7, y=0.9–0.3, and x+y=3. |
| priorityDate |
2003-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |