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Phthalic Acid

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Phthalic Acid molecular structure
Molecular structure

The Sigma-Aldrich catalog lists 8 grades and pack sizes of Phthalic Acid (CAS 88-99-3). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS88-99-3
Molecular formulaC8H6O4
Molecular weight166.13 g/mol
IUPAC namephthalic acid
Synonyms1,2-benzenedicarboxylic acid · o-phthalic acid · benzene-1,2-dicarboxylic acid · o-dicarboxybenzene · o-benzenedicarboxylic acid · Acide phtalique
Safety & Hazards (GHS) Danger
Irritant Irritant Health hazard Health hazard
  • H360D May damage the unborn child
  • H319 Causes serious eye irritation
  • H335 May cause respiratory irritation

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand Product / grade Code
Sigma PHTHALIC ACID 80010-100G
80010-1KG
Y0000766		 Request Quote
Sigma PHTHALIC ACID, 98% P39303-100G Request Quote
Sigma PHTHALIC ACID, ACS REAGENT, >=99.5% 402915-1KG Request Quote
Sigma PHTHALIC ACID, UNITED STATES PHARMACOPEI 1535899-50MG Request Quote
Sigma Phthalic acid, ACS reagent, =99.5% 402915-250G
402915-25G		 Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.