402915

Phthalic acid

ACS reagent, ≥99.5%

• Synonym(s): 1,2-Benzenedicarboxylic acid
• Linear Formula: C₆H₄-1,2-(CO₂H)₂
• CAS Number: 88-99-3
• Molecular Weight: 166.13
• Beilstein: 608199
• Numer EC: 201-873-2
• Numer MDL: MFCD00002467
• Identyfikator substancji w PubChem: 24865138
• NACRES: NA.21

Properties

• klasa czystości: ACS reagent
• Poziom jakości: 200
• próba: ≥99.5%
• forma: powder or crystals
• zanieczyszczenia: ≤0.05% insolubles; ≤0.5% water
• pozostałość po prażeniu: ≤0.02%
• mp: 210-211 °C (dec.) (lit.)
• ślady anionów: chloride (Cl^-): ≤0.001%; nitrate (NO₃^-): ≤0.005%; sulfate (SO₄^2-): ≤0.005%
• ślady kationów: Fe: ≤0.001%; heavy metals: ≤0.001%
• 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

Opis ogólny

Phthalic acid (PA, PTA), also called as 1,2-benzenedicarboxylic acid is an aromatic carboxylic acid. It is the ortho form of the three phthalic acid isomers, the other two being isophthalic acid (meta form) and terephthalic acid (para form). PA is the starting material in the synthesis of plasticizers. A study on toxicity reveals that PA shows in vitro and in vivo toxicity. Its mineralization by photocatalysis using TiO₂/UV system has been studied. It also is used as a potential tyrosinase inhibitor.

Zastosowanie

Phthalic acid may be used as a catalyst for the thiocyanation of aromatics and heteroaromatics and as an interfacial protector for the preparation of ordered mesoporous γ-alumina. It may be used as a model compound in understanding the adsorption of aromatic carboxylic acids on gold surfaces.

Safety Information

• piktogramy: GHS07
• Hasło ostrzegawcze: Warning
• Zwroty wskazujące rodzaj zagrożenia: H315 - H319 - H335
• Zwroty wskazujące środki ostrożności: P302 + P352 - P305 + P351 + P338
• Klasyfikacja zagrożeń: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Organy docelowe: Respiratory system
• Kod klasy składowania: 11 - Combustible Solids
• WGK: WGK 1
• Środki ochrony indywidualnej: dust mask type N95 (US), Eyeshields, Gloves