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80010 Sigma-Aldrich

Phthalic acid

puriss. p.a., ≥99.5% (T)

Synonym: 1,2-Benzenedicarboxylic acid

  • CAS Number 88-99-3

  • Linear Formula C6H4-1,2-(CO2H)2

  • Molecular Weight 166.13

  •  Beilstein/REAXYS Number 608199

  •  EC Number 201-873-2

  •  MDL number MFCD00002467

  •  PubChem Substance ID 57652822

  •  NACRES NA.21

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Properties

Related Categories Acids, Acids & Bases, Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography,
Quality Level   200
grade   puriss. p.a.
assay   ≥99.5% (T)
form   powder or crystals
ign. residue   ≤0.02% (as SO4)
mp   210-211 °C (dec.) (lit.)
solubility   water: soluble(lit.)
anion traces   chloride (Cl-): ≤50 mg/kg
  sulfate (SO42-): ≤50 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: ≤50 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Na: ≤50 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Zn: ≤5 mg/kg
SMILES string   OC(C1=C(C(O)=O)C=CC=C1)=O
InChI   1S/C8H6O4/c9-7(10)5-3-1-2-4-6(5)8(11)12/h1-4H,(H,9,10)(H,11,12)
InChI key   XNGIFLGASWRNHJ-UHFFFAOYSA-N

Description

General description

Phthalic acid (1,2-benzenedicarboxylic acid) is an aromatic dicarboxylic acid. On heating, it undergoes dehydration to afford cyclic anhydride. It can be synthesized from phthalic anhydride.

Application

Phthalic acid may be used in the synthesis of benzoic acid. It may be used to constitute the mobile phase during hydrophilic interaction liquid chromatography (HILIC) coupled with electrospray ionization tandem mass spectrometric (ESI-MS/MS) analysis of free amino acids (AAs) in human thyroid tissues.

Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Target organs 
Respiratory system
Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
RTECS 
TH9625000

Documents

Certificate of Analysis (COA)

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Protocols & Articles

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References

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