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Phthalic acid, 99%

Product Code. 11477107
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Product Code. 11477107 Supplier Thermo Scientific Alfa Aesar Supplier No. A14450.0B
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Estimated Shipment: 28-09-2026
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Description

CAS: 88-99-3 | C8H6O4 | 166.132 g/mol

Phthalic acid is used as an active ingredient in polyesters and alkyd resins. It is also used as plasticizers for polyvinyl chloride and other polymers. It is also useful in the production of anthraquinone, phenolphthalein and phthalocyanine pigments. It serves as an organic reagent in the production of phthalates. It is used to prepare 1,3-cyclohexadiene by reduction using sodium amalgam.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Phthalic acid is used as an active ingredient in polyesters and alkyd resins. It is also used as plasticizers for polyvinyl chloride and other polymers. It is also useful in the production of anthraquinone, phenolphthalein and phthalocyanine pigments. It serves as an organic reagent in the production of phthalates. It is used to prepare 1,3-cyclohexadiene by reduction using sodium amalgam.

Solubility
Soluble in water, alcohol and etherSoluble in alcohol. Slightly soluble in water, methanol and ether. Insoluble in chloroform.

Notes
Incompatible with strong oxidizing agents.
TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 88-99-3
Molecular Formula C8H6O4
Molecular Weight (g/mol) 166.132
MDL Number MFCD00002467
InChI Key XNGIFLGASWRNHJ-UHFFFAOYSA-N
Synonym 1,2-benzenedicarboxylic acid, benzene-1,2-dicarboxylic acid, o-phthalic acid, o-dicarboxybenzene, o-benzenedicarboxylic acid, pathalic acid, acide phtalique, kyselina ftalova, ortho-phthalic acid, phthalicacid
PubChem CID 1017
ChEBI CHEBI:29069
IUPAC Name phthalic acid
SMILES C1=CC=C(C(=C1)C(=O)O)C(=O)O

Especificaciones

Melting Point 205°C (decomposition)
Density 1.593
Quantity 1000 g
Flash Point 168°C (334°F)
Odor Odorless
Beilstein 608199
Merck Index 14,7371
Solubility Information Soluble in water,alcohol and etherSoluble in alcohol; Slightly soluble in water,methanol and ether; Insoluble in chloroform.
Formula Weight 166.13
Percent Purity 99%
Chemical Name or Material Phthalic acid
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