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Documentos Principais

80010

Sigma-Aldrich

Phthalic acid

puriss. p.a., ≥99.5% (T)

Sinônimo(s):

1,2-Benzenedicarboxylic acid

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About This Item

Fórmula linear:
C6H4-1,2-(CO2H)2
Número CAS:
Peso molecular:
166.13
Beilstein:
608199
Número CE:
Número MDL:
Código UNSPSC:
12352100
ID de substância PubChem:
NACRES:
NA.21

grau

puriss. p.a.

Nível de qualidade

Ensaio

≥99.5% (T)

Formulário

powder or crystals

resíduo de ignição

≤0.02% (as SO4)

pf

210-211 °C (dec.) (lit.)

solubilidade

water: soluble(lit.)

traços de ânion

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg

traços de cátion

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

grupo funcional

carboxylic acid

cadeia de caracteres SMILES

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)

chave InChI

XNGIFLGASWRNHJ-UHFFFAOYSA-N

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Descrição geral

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.

Aplicação

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.

Pictogramas

Corrosion

Palavra indicadora

Danger

Frases de perigo

Declarações de precaução

Classificações de perigo

Eye Dam. 1

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

334.4 °F

Ponto de fulgor (°C)

168 °C

Equipamento de proteção individual

dust mask type N95 (US), Eyeshields, Gloves


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Analytica chimica acta, 870, 75-82 (2015-03-31)
In this work, 0.08 mmol L(-1) of phthalic acid was introduced as a mobile phase additive to quantify free amino acids (AAs) by hydrophilic interaction liquid chromatography (HILIC) coupled with electrospray ionization tandem mass spectrometry (ESI-MS/MS). The addition of phthalic
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