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32319 Sigma-Aldrich

Diethylenetriaminepentaacetic acid

for complexometry, ≥99.0%

Synonym: (Carboxymethylimino)bis(ethylenenitrilo)tetraacetic acid, N,N-Bis(2-[bis(carboxymethyl)amino]ethyl)glycine, DETAPAC, DTPA, Penta(carboxymethyl)diethylenetriamine, Pentetic acid

  • CAS Number 67-43-6

  • Linear Formula [(HOOCCH2)2NCH2CH2]2NCH2COOH

  • Molecular Weight 393.35

  •  Beilstein/REAXYS Number 1810219

  •  EC Number 200-652-8

  •  MDL number MFCD00004289

  •  PubChem Substance ID 329754138

  •  NACRES NA.21

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Properties

grade   for complexometry
assay   ≥99.0% (KT)
  ≥99.0%
ign. residue   ≤0.05% (as SO4)
loss   ≤0.1% loss on drying, 20°C, HV
mp   219-220 °C (lit.)
anion traces   chloride (Cl-): ≤1000 mg/kg
  sulfate (SO42-): ≤200 mg/kg
cation traces   Ca: ≤10 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤5 mg/kg
  K: ≤10 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Na: ≤500 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Zn: ≤5 mg/kg
SMILES string   OC(=O)CN(CCN(CC(O)=O)CC(O)=O)CCN(CC(O)=O)CC(O)=O
InChI   1S/C14H23N3O10/c18-10(19)5-15(1-3-16(6-11(20)21)7-12(22)23)2-4-17(8-13(24)25)9-14(26)27/h1-9H2,(H,18,19)(H,20,21)(H,22,23)(H,24,25)(H,26,27)
InChI key   QPCDCPDFJACHGM-UHFFFAOYSA-N

Description

General description

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Other Notes

Complexing agent for the chelation of iron in solution

Safety & Documentation

Safety Information

Symbol 
Signal word 
Warning
Hazard statements 
Precautionary statements 
Target organs 
Respiratory Tract
Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
2
Flash Point(F) 
392 °F
Flash Point(C) 
200 °C

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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