ZA200601481B - An aqueous solution of a sodium salt of HEDTA - Google Patents
An aqueous solution of a sodium salt of HEDTA Download PDFInfo
- Publication number
- ZA200601481B ZA200601481B ZA200601481A ZA200601481A ZA200601481B ZA 200601481 B ZA200601481 B ZA 200601481B ZA 200601481 A ZA200601481 A ZA 200601481A ZA 200601481 A ZA200601481 A ZA 200601481A ZA 200601481 B ZA200601481 B ZA 200601481B
- Authority
- ZA
- South Africa
- Prior art keywords
- hedta
- solution
- sodium salt
- aqueous solution
- aqueous
- Prior art date
Links
- 159000000000 sodium salts Chemical class 0.000 title claims description 17
- 239000007864 aqueous solution Substances 0.000 title claims description 15
- URDCARMUOSMFFI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid Chemical compound OCCN(CC(O)=O)CCN(CC(O)=O)CC(O)=O URDCARMUOSMFFI-UHFFFAOYSA-N 0.000 title description 26
- 239000000243 solution Substances 0.000 claims description 25
- 239000012528 membrane Substances 0.000 claims description 16
- 239000002738 chelating agent Substances 0.000 claims description 7
- 239000003518 caustics Substances 0.000 claims description 3
- SOBHUZYZLFQYFK-UHFFFAOYSA-K trisodium;hydroxy-[[phosphonatomethyl(phosphonomethyl)amino]methyl]phosphinate Chemical compound [Na+].[Na+].[Na+].OP(O)(=O)CN(CP(O)([O-])=O)CP([O-])([O-])=O SOBHUZYZLFQYFK-UHFFFAOYSA-K 0.000 claims 1
- 238000000034 method Methods 0.000 description 15
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000000909 electrodialysis Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 239000011734 sodium Substances 0.000 description 5
- 239000012266 salt solution Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 238000005341 cation exchange Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229940083542 sodium Drugs 0.000 description 3
- 235000015424 sodium Nutrition 0.000 description 3
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical class [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010003402 Arthropod sting Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241000100287 Membras Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000011026 diafiltration Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005370 electroosmosis Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012527 feed solution Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000797 iron chelating agent Substances 0.000 description 1
- 150000004698 iron complex Chemical class 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- NOJNFULGOQGBKB-UHFFFAOYSA-M sodium;3-[3-tert-butylsulfanyl-1-[[4-(6-ethoxypyridin-3-yl)phenyl]methyl]-5-[(5-methylpyridin-2-yl)methoxy]indol-2-yl]-2,2-dimethylpropanoate Chemical compound [Na+].C1=NC(OCC)=CC=C1C(C=C1)=CC=C1CN1C2=CC=C(OCC=3N=CC(C)=CC=3)C=C2C(SC(C)(C)C)=C1CC(C)(C)C([O-])=O NOJNFULGOQGBKB-UHFFFAOYSA-M 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- -1 transition mmetals Chemical class 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Detergent Compositions (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48845103P | 2003-07-21 | 2003-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA200601481B true ZA200601481B (en) | 2007-05-30 |
Family
ID=36936434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA200601481A ZA200601481B (en) | 2003-07-21 | 2006-02-20 | An aqueous solution of a sodium salt of HEDTA |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN100383113C (zh) |
| UA (1) | UA81686C2 (zh) |
| ZA (1) | ZA200601481B (zh) |
-
2004
- 2004-07-13 UA UAA200601773A patent/UA81686C2/ru unknown
- 2004-07-13 CN CNB2004800212071A patent/CN100383113C/zh not_active Expired - Fee Related
-
2006
- 2006-02-20 ZA ZA200601481A patent/ZA200601481B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| UA81686C2 (ru) | 2008-01-25 |
| CN1826312A (zh) | 2006-08-30 |
| CN100383113C (zh) | 2008-04-23 |
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