402915

Phthalic acid

ACS reagent, ≥99.5%

• Sinonimo/i: 1,2-Benzenedicarboxylic acid
• Formula condensata: C₆H₄-1,2-(CO₂H)₂
• Numero CAS: 88-99-3
• Peso molecolare: 166.13
• Beilstein: 608199
• Numero CE: 201-873-2
• Numero MDL: MFCD00002467
• Codice UNSPSC: 12352100
• ID PubChem: 24865138
• NACRES: NA.21

Proprietà

• Grado: ACS reagent
• Livello qualitativo: 200
• Saggio: ≥99.5%
• Forma fisica: powder or crystals
• Impurezze: ≤0.05% insolubles; ≤0.5% water
• Residuo alla calcinazione: ≤0.02%
• Punto di fusione: 210-211 °C (dec.) (lit.)
• Anioni in tracce: chloride (Cl^-): ≤0.001%; nitrate (NO₃^-): ≤0.005%; sulfate (SO₄^2-): ≤0.005%
• Cationi in tracce: Fe: ≤0.001%; heavy metals: ≤0.001%
• Stringa SMILE: 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); XNGIFLGASWRNHJ-UHFFFAOYSA-N

Descrizione

Descrizione generale

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.

Applicazioni

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.

Informazioni sulla sicurezza

• Pittogrammi: GHS05
• Avvertenze: Danger
• Indicazioni di pericolo: H318
• Consigli di prudenza: P280 - P305 + P351 + P338
• Classi di pericolo: Eye Dam. 1
• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): 334.4 °F
• Punto d’infiammabilità (°C): 168 °C
• Dispositivi di protezione individuale: dust mask type N95 (US), Eyeshields, Gloves