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Ethylenediaminetetraacetic acid, EDTA, disodium salt, dihydrate, molecular biology grade

- 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, referred to dried sample): min. 99 %rabsorbance of an aqueous solution 0,1 M in a 1 cm cell at 260 nm: max. 0,2 AUrabsorbance of an aqueous solution 0,1 M in a 1 cm cell at 280 nm: max. 0,02 AUrheavy metals (as Pb): max. 5 ppmrloss on drying (150ºC, 6 h): 9,0 - 10,0 %rDNases, RNases, Proteases : non detectedr