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Merck

80010

Phthalic acid

≥99.5% (T), powder or crystals, puriss. p.a.

Synonym(s):

1,2-Benzenedicarboxylic acid

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About This Item

Linear Formula:
C6H4-1,2-(CO2H)2
CAS Number:
88-99-3
Molecular Weight:
166.13
NACRES:
NA.21
PubChem Substance ID:
57652822
UNSPSC Code:
12352100
EC Number:
201-873-2
MDL number:
MFCD00002467
Beilstein/REAXYS Number:
608199

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Product Name

Phthalic acid, puriss. p.a., ≥99.5% (T)

InChI key

XNGIFLGASWRNHJ-UHFFFAOYSA-N

InChI

1S/C8H6O4/c9-7(10)5-3-1-2-4-6(5)8(11)12/h1-4H,(H,9,10)(H,11,12)

SMILES string

OC(C1=C(C(O)=O)C=CC=C1)=O

grade

puriss. p.a.

assay

≥99.5% (T)

form

powder or crystals

ign. residue

≤0.02% (as SO4)

mp

210-211 °C (dec.) (lit.)

solubility

water: soluble(lit.)

anion traces

chloride (Cl-): ≤10 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

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

functional group

carboxylic acid

Quality Level

200

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Show Differences

1 of 4

This Item
40291579255Y0000766
Phthalic acid puriss. p.a., ≥99.5% (T)

Sigma-Aldrich

80010

Phthalic acid

Phthalic acid ACS reagent, ≥99.5%

Sigma-Aldrich

402915

Phthalic acid

Phthalic acid analytical standard

Supelco

79255

Phthalic acid

Phthalic acid European Pharmacopoeia (EP) Reference Standard

Y0000766

Phthalic acid

grade

puriss. p.a.

grade

-

grade

-

grade

-

assay

≥99.5% (T)

assay

≥99.5%

assay

≥99.5% (GC), ≥99.5% (T)

assay

-

Quality Level

200

Quality Level

200

Quality Level

100

Quality Level

-

form

powder or crystals

form

powder or crystals

form

-

form

-

solubility

water: soluble(lit.)

solubility

-

solubility

-

solubility

-

anion traces

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

anion traces

chloride (Cl-): ≤0.001%, nitrate (NO3-): ≤0.005%, sulfate (SO42-): ≤0.005%

anion traces

-

anion traces

-

Application

Phthalic acid may be used in the synthesis of benzoic acid.[1] 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.[2]

General description

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.[1]

pictograms

Corrosion
GHS05

signalword

Danger

hcodes

H318

Hazard Classifications

Eye Dam. 1

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

334.4 °F

flash_point_c

168 °C

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
WXBF7257V
WXBF5114V
WXBF3775V
BCCL2348
WXBF4263V

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Wanshu Qi et al.
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
Christopher H Hurst et al.
Toxicological sciences : an official journal of the Society of Toxicology, 74(2), 297-308 (2003-06-14)
Phthalate esters are widely used as plasticizers in the manufacture of products made of polyvinyl chloride. Mono-(2-ethylhexyl)-phthalate (MEHP) induces rodent hepatocarcinogenesis by a mechanism that involves activation of the nuclear transcription factor peroxisome proliferator-activated receptor-alpha (PPARalpha). MEHP also activates PPAR-gamma
Russ Hauser
Seminars in reproductive medicine, 24(3), 156-167 (2006-06-29)
Scientific and public concern about the potential risk of environmental chemicals to male reproductive health has been heightened by reports of downward trends in semen quality, as well as increased rates of developmental urogenital tract anomalies and testicular cancer. Of
Paula J Lapinskas et al.
Toxicology, 207(1), 149-163 (2004-12-14)
Phthalate esters belong to a large class of compounds known as peroxisome proliferators (PP). PP include chemicals that activate different subtypes of the peroxisome proliferator-activated receptor (PPAR) family. The ability of phthalate esters and their metabolites to activate responses through
Maria Cristina Fossi et al.
Marine pollution bulletin, 64(11), 2374-2379 (2012-09-12)
Baleen whales are potentially exposed to micro-litter ingestion as a result of their filter-feeding activity. However, the impacts of microplastics on baleen whales are largely unknown. In this case study of the Mediterranean fin whale (Balaenoptera physalus), we explore the
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