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Ethylenediaminetetraacetic acid, EDTA, disodium salt, dihydrate, Pharmpur®, Ph Eur, BP, USP

- 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: P260 - P271 - P304+P340 - P312 - P314 - P501a
- Tariff number: 2922 49 95 90
- Applications: analytical chemistry, sequestering agent.

SPECIFICATIONS
assay (complexometric, referred to dried sample): 99,0 - 101,0 %
assay (complexometric): 98,5 - 101,0 %
Identification IR: passes test
Identification sodium: passes test
Identification B (USP): passes test
Identification B (EP): passes test
Identification C (EP): passes test
appearance of solution: clear and colourless
pH (5 %, H2O): 4,0 - 5,5
calcium (Ca): passes test
iron (Fe): max. 80 ppm
nitrilotriacetic acid [(HOCOCH4)3N]: max. 0,1 %
loss on drying (150ºC, 6 h): 8,7 - 11,4 %