EDTA sól disodowa, dihydrat ExpertQ® do analizy, ACS, Reag. Ph Eur – Scharlau

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PRODUCENT: SCHARLAB

Ethylenediaminetetraacetic acid, EDTA, d

– Synonyms: Edetic acid disodium salt, Disodium dihydrogen ethylenediaminetetraacetate
– C10H14N2Na2O8·2H2O
– M = 372,24 g/mol
– CAS [6381-92-6]
– EINECS-No.: 205-358-3
– Solub. in water: (20 ºC): 100 g/l
– Melting point: 252 ºC (decomposes)
– LD 50 (oral, rat): 2000 mg/kg
– GHS-signal word: Warning
– GHS-H sentences: H332 – H373 – –
– GHS-P sentences: P264 – P270 – P330 – P301+P312 – P501a
– Tariff number: 2922 49 95 90
– Applications: analytical chemistry, sequestering agent.

SPECIFICATIONS
assay (complexometric): 99,0 – 101,0 %
Identification IR: passes test
identity (complexation): passes test
identity (sodium): passes test
appearance: passes test
appearance of solution (50 g/l): passes test
pH (5 %, H2O, 25 °C): 4,0 – 5,0
insoluble matter: max. 0,003 % :
nitrilotriacetic acid [(HOCOCH4)3N]: max. 0,1 %
chlorides (Cl): max. 0,004 %
sulfates (SO4): max. 0,01 %
cyanides (CN): max. 0,001 %
calcium (Ca): passes test
copper (Cu): max. 0,0001 %
heavy metals (as Pb): max. 0,0005 %
iron (Fe): max. 0,0005 %
lead (Pb): max. 0,001 %
loss on drying (150ºC, 6 h): 8,7 – 11,4 %