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Ethylenediaminetetraacetic acid, EDTA, disodium salt, dihydrate, for analysis, ExpertQ®, ACS, Reag. Ph Eur

- Synonyms: Edetic acid disodium salt, Disodium dihydrogen ethylenediaminetetraacetater- C10H14N2Na2O8·2H2Or- M = 372,24 g/molr- CAS [6381-92-6]r- EINECS-No.: 205-358-3r- Solub. in water: (20 ºC): 100 g/lr- Melting point: 252 ºC (decomposes)r- LD 50 (oral, rat): 2000 mg/kgr- GHS-signal word: Warningr- GHS-H sentences: H332 - H373 - - r- GHS-P sentences: P260 - P271 - P304+P340 - P312 - P314 - P501ar- Tariff number: 2922 49 95 90r- Applications: analytical chemistry, sequestering agent.rrSPECIFICATIONSrassay (complexometric): 99,0 - 101,0 %rIdentification IR: passes testridentity (complexation): passes testridentity (sodium): passes testrappearance: passes testrappearance of solution (50 g/l): passes testrpH (5 %, H2O, 25 °C): 4,0 - 5,0rinsoluble matter: max. 0,003 % : rnitrilotriacetic acid [(HOCOCH4)3N]: max. 0,1 % rchlorides (Cl): max. 0,004 %rsulfates (SO4): max. 0,01 %rcyanides (CN): max. 0,001 %rcalcium (Ca): passes testrcopper (Cu): max. 0,0001 %rheavy metals (as Pb): max. 0,0005 %riron (Fe): max. 0,0005 %rlead (Pb): max. 0,001 %rloss on drying (150ºC, 6 h): 8,7 - 11,4 %r