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Phthalic acid

Name: Phthalic acid
Brand: SIAL
Price: 59.2 USD
Availability: InStock

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

Synonym(s):

1,2-Benzenedicarboxylic acid

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100 g	Check Cart for Availability	$59.20
1 kg	Check Cart for Availability	$96.70

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

Assay:

≥99.5% (T)

Form:

powder or crystals

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Properties

Product Name

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

grade

puriss. p.a.

Quality Segment

200

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 (SO₄^2-): ≤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

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

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.

Application

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.

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This Item	79255	402915	1535899
Sigma-Aldrich 80010 Phthalic acid	Supelco 79255 Phthalic acid	Sigma-Aldrich 402915 Phthalic acid	USP 1535899 Phthalic acid
description puriss. p.a., ≥99.5% (T)	description analytical standard	description ACS reagent, ≥99.5%	description United States Pharmacopeia (USP) Reference Standard
grade puriss. p.a.	grade analytical standard	grade ACS reagent	grade pharmaceutical primary standard
assay ≥99.5% (T)	assay ≥99.5% (GC), ≥99.5% (T)	assay ≥99.5%	assay -
Quality Level 200	Quality Level 100	Quality Level 200	Quality Level -
form powder or crystals	form -	form powder or crystals	form crystalline
solubility water: soluble(lit.)	solubility -	solubility -	solubility water: partially soluble, alcohol: soluble
anion traces sulfate (SO₄^2-): ≤50 mg/kg, chloride (Cl^-): ≤10 mg/kg	anion traces -	anion traces sulfate (SO₄^2-): ≤0.005%, chloride (Cl^-): ≤0.001%, nitrate (NO₃^-): ≤0.005%	anion traces -

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Pictograms

GHS05

Signal Word

Danger

Hazard Codes

H318

Precautionary Statements

P280 - P305 + P351 + P338

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 (personal protective equipment)

dust mask type N95 (US), Eyeshields, Gloves

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