79255
Phthalic acid
analytical standard
Synonym(s):
1,2-Benzenedicarboxylic acid
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All Photos(2)
About This Item
Linear Formula:
C6H4-1,2-(CO2H)2
CAS Number:
Molecular Weight:
166.13
Beilstein:
608199
EC Number:
MDL number:
UNSPSC Code:
85151701
PubChem Substance ID:
NACRES:
NA.24
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grade
analytical standard
Quality Level
Assay
≥99.5% (GC)
≥99.5% (T)
shelf life
limited shelf life, expiry date on the label
technique(s)
HPLC: suitable
gas chromatography (GC): suitable
impurities
≤0.5% water
mp
210-211 °C (dec.) (lit.)
application(s)
cleaning products
cosmetics
food and beverages
personal care
format
neat
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
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General description
Phthalic acid is an organic acid and a major bioactive component, reportedly identified in the extracts of Solanum nigrum, Nigella sativa, Angelicae Radix and Ligustici Rhizoma, utilized as Chinese herbal medicines.
Application
Phthalic acid may be used as an analytical reference standard for the quantification of the analyte in the following:
- Angelicae Radix and Ligustici Rhizoma using high performance liquid chromatography with photodiode array detection (HPLC-PDA) followed by liquid chromatography coupled to mass spectrometry (LC-MS) and capillary electrophoresis (CE) analyses.
- Nigella sativa and Solanum nigrum using gas chromatography-mass spectrometry (GC-MS).
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.
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Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Dam. 1
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
334.4 °F
Flash Point(C)
168 °C
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Separation and identification of the organic acids in Angelicae Radix and Ligustici Rhizoma by HPLC and CE
Huang Y-W and Sheu J-S
Journal of Separation Science, 29(17), 2616-2624 (2006)
Characterization of alkaloid constitution and evaluation of antimicrobial activity of Solanum nigrum using gas chromatography mass spectrometry (GC-MS)
Jasim H, et al.
Journal of pharmacognosy and phytotherapy, 7(4), 56-72 (2015)
En-Cui Yang et al.
Dalton transactions (Cambridge, England : 2003), 44(7), 3190-3199 (2015-01-13)
Four new 4-amino-1,2,4-triazole (atr)-based coordination polymers, {[Cu2(atr)(H2O)(μ-OH)2(pa)]·H2O}n (), {[Cu3(atr)2(H2O)2(μ-OH)2(npa)2]·2H2O}n (), {[Cu3(atr)5(dca)(μ-OH)(ClO4)2](ClO4)2}n () and {[Cu3(atr)2(H2O)(μ3-OH)(μ-OH)2(spa)]·1.5H2O}n () (pa(2-) = phthalate, npa(2-) = 3-nitrophthalate, dca(-) = dicyanamide and spa(3-) = 4-sulfophthalate), were successfully obtained by varying the carboxylate- and cyanide-modified magnetic bridges. Structural
Xiao-Yan Zhang et al.
Applied and environmental microbiology, 80(22), 6870-6878 (2014-08-26)
EstS1, a newly identified thermostable esterase from Sulfobacillus acidophilus DSM10332, was heterologously expressed in Escherichia coli and shown to enzymatically degrade phthalate esters (PAEs) to their corresponding monoalkyl PAEs. The optimal pH and temperature of the esterase were found to
Wenli Liu et al.
Bulletin of environmental contamination and toxicology, 92(5), 621-624 (2014-02-19)
Effects of di-(2-ethylhexyl) phthalate and di-n-butyl phthalate on seed germination rate and antioxidant enzymes activities of mung bean (Phaseolus radiatus L.) were investigated. Results showed that under the treatment with 10 mg/kg of phthalate esters (PAEs), superoxide dismutase (SOD), peroxidase and
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