Other identifiers. Chemical dangers The solution in water is a weak acid. Phthalic acid melting point. MOL SDF 3D-SDF PDB SMILES InChI. It is an isomer of isophthalic acid and terephthalic acid. In water, 6,000 mg/L at 25 deg C. Kirk-Othmer Encyclopedia of Chemical Technology . It is a white solid that is poorly soluble in water but soluble in acetone. CAS 88-99-3, EC Number 201-873-2, chemical formula C₆H₄(COOH)₂. The monopotassium salt, potassium hydrogen phthalate is a standard acid in analytical chemistry. Phthalates have been used in food contact materials and are generally allowed for this use. Typically phthalate esters are prepared from the widely available phthalic anhydride. ... Solubility in mg/100g standard fat at 20°C provides substance information on the substance solubility in standard fat in milligram per 100 gram at a temperature of 20°C. Reduction of phthalic acid with sodium amalgam in the presence of water gives the 1,3-cyclohexadiene derivative.[9]. As part The experimental temperature ranges from (298.3 to 367.9) K, and the mass fraction of acetic acid in the solvent mixtures ranges from 0.8 to 1.0. Translated names. The purity of the phthalic acid … As part of your pre-lab assignment, calculate the volume of boiling water required to dissolve 1 g of phthalic acid (use the data given above). CAS names. It is also incompatible with oxidizers. Naphthalene on oxidation with potassium permanganate or potassium dichromate gives phthalic acid. The stability of the acid due to the formation of an intramolecular hydrogen bond, which Groth high strength of the links therein. PHTHALIC ACID is a carboxylic acid. View information & documentation regarding Phthalic acid, including CAS, MSDS & more. Other . Phthalic acid is an aromatic dicarboxylic acid, with formula C6H4(CO2H)2. Phthalic acid is an aromatic dicarboxylic acid, with formula C 6 H 4 (CO 2 H) 2.It is an isomer of isophthalic acid and terephthalic acid.Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale. (report to one decimal place) (Showcalculations) Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a Sigma-Aldrich offers a number of Phthalic acid products. Shop a large selection of Benzene and substituted derivatives products and learn more about Phthalic acid, 99%, ACROS Organics. Phthalic acid is very soluble in boiling water, 18 g/100 mL, and is much less soluble in chilled (14°C) water, 0.54 g/100 mL. Phthalsäure . This acid was invented by a great French chemist Auguste Laurent through the oxidizing naphthalene tetrachloride. Translated names. Therefore, no MAK value is established for this isomer, and o‐phthalic acid remains in Section IIb of the List of MAK and BAT Values. Ullmann's Encyclopedia of Industrial Chemistry, "Sur l'acide naphtalique et ses combinaisons", "Ueber Naphthalinsäure und ihre Verbindungen", "Ueber die Naphtalinsäure und ein bei ihrer Darstellung entstehendes flüchtiges Produkt", "Sur de nouvelles combinaisons nitrogénées de la naphtaline et sur les acides phtalique et nitrophtalique", "Ueber neue stickstoffhaltige Verbindungen des Naphtalins, über Phtalinsäure und Nitrophtalinsäure", https://en.wikipedia.org/w/index.php?title=Phthalic_acid&oldid=960938009, Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference, Articles with changed ChemSpider identifier, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, Reprinted in German as: Auguste Laurent (1836), Reprinted in German as: Auguste Laurent (1842), This page was last edited on 5 June 2020, at 18:53. Phthalic Acid is an isomer of isophthalic acid and terephthalic acid. AEGLs (Acute Exposure Guideline Levels) No AEGL information available. The phthalic acid is somewhat soluble in water. Results of our experimental measurements, combined with published solubility data for isophthalic acid dissolved in ethyl acetate, acetic acid, acetophenone, acetone, cyclohexanone, propyl acetate… C&L Inventory . Groups of eleven pregnant Wistar rats were fed a diet containing phthalic acid at a dose of 0, 1.25, 2.5, or 5.0 % ad libitum on GD 7 - GD 16 ( 0, 1021, 1763, 2981 mg/kg bw/day). Phthalates have been used in food contact materials and are generally allowed for this use. Phthalic acid is one of three isomers of benzenedicarboxylic acid, the others being isophthalic acid and terephthalic acid. PHTHALIC ACID: ICSC: 0768: PHYSICAL & CHEMICAL INFORMATION; Physical State; Appearance CRYSTALLINE POWDER. Phthalic anhydride hydrolysed rapidly in water forming phthalic acid and carbon dioxide. The process of the first patent uses a xylene soluble cobalt compound (e.g., cobalt naphthenate, cumate, toluate, etc.) It is a white crystalline solid subliming at 345°C. RESULTS: Phthalic acid extraction followed the sequence: 10% TRPO > 50% TBP > 1‐octanol, with recoveries from the TRPO and TBP systems being much larger than that for 1‐octanol. The administration in the feed was selected because of only slight solubility of phthalic acid in water and oil. Phthalic acid has applications in the preparation of phthalate ester plasticizers[1]. This chemical is sensitive to exposure to extreme heat. Octanol/water partition coefficient as … Excerpt from ERG Guide 156 [Substances - Toxic and/or Corrosive (Combustible / Water-Sensitive)]: Combustible material: may burn but does not ignite readily. Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. The apparent extraction equilibrium constant for TRPO is much larger than that for TBP. Production. For more information on any chemical compound, refer BYJU’S. [10], 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=1/C8H6O4/c9-7(10)5-3-1-2-4-6(5)8(11)12/h1-4H,(H,9,10)(H,11,12), Except where otherwise noted, data are given for materials in their. Zheng Z(1), He PJ, Fu Q, Shao LM, Lee DJ. The (1,3-benzenecarboxylic acid) is the meta form of phthalic acid. Because both these methods convert the collected phthalic anhydride to, and analyze as, phthalic acid, they are susceptible to positive interference from any phthalic acid originally present in the air. IUPAC names. Phthalic Acid is an isomer of isophthalic acid and terephthalic acid. Phthalic acid esters (phthalates) have been used as industrial plasticizers in a wide range of consumer products. Phthalic acid. Author information: (1)State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze River Water Environment, College of Environmental Science & Engineering, Tongji University, Shanghai, 200092, PR China. Formula: C 8 H 6 O 4 / C 6 H 4 (COOH) 2 Molecular mass: 166.1 Decomposes at 191°C Relative density (water = 1): 1.6 Solubility … Thus, water is a very good recrystallization solvent for phthalic acid. IUPAC names. Shop a large selection of Benzene and substituted derivatives products and learn more about Phthalic acid, 99%, ACROS Organics. Recrystallization of Phthalic Acid. Phthalic acid for synthesis. [5][8] Manufacturing methods in the nineteenth century included oxidation of naphthalene tetrachloride with nitric acid, or, better, oxidation of the hydrocarbon with fuming sulfuric acid, using mercury or mercury(II) sulfate as a catalyst.[5]. It is a white crystalline solid subliming at 345°C. Isophthalic acid is a benzenedicarboxylic acid that is benzene substituted by carboxy groups at position 1 and 3. Phthalic acid is however easily dehydrated to form phthalic anhydride. [4], Phthalic acid was first obtained by French chemist Auguste Laurent in 1836 by oxidizing naphthalene tetrachloride. Properties Of Phthalic Acid. Weight Average: 166.1308 Monoisotopic: 166.02660868 Chemical Formula C 8 H 6 O 4 Synonyms Not Available Pharmacology Indication Not Available … The overall σ of 159 data points was 0.70 %. Related Catalog The solubilities or 'apparent-solubilities' of these substa … 88-99-3. K (NIST website), (ii) 210−211 °C with decomposition (Sigma-Aldrich on-line), (iii) 191 °C in a sealed tube (Ullmann's Encyclopedia of Industrial Chemistry), (iv) 230 °C with conversion to phthalic anhydride and water (J.T.Baker MSDS). The acid is soluble in water, sparingly soluble in ether. Believing the resulting substance to be a naphthalene derivative, he named it "naphthalic acid". ... Solubility: 5.74 g/l: Dimensions; Materials Information; Toxicological Information; LD 50 oral: LD50 Rat 7900 mg/kg: Safety Information according to GHS; Hazard Pictogram(s) Hazard Statement(s) H315: Causes skin irritation. It is an isomer of isophthalic acid and terephthalic acid. It is the conjugate acid of a phthalate(1-) and a phthalate. It is a dibasic acid, with pKas of 2.89 and 5.51. Packaging 25 g in poly bottle Safety & Documentation. Into a reaction tube, using a plastic funnel to make a clean transfer, weigh about 60 mg of phthalic acid accurately (it can be 55 mg or 65 mg but measure the amount exactly). The approximate amount of HOH needed can be calculated from the table on p. 79. Phthalic acid is produced by the catalytic oxidation of naphthalene or ortho-xylene directly to phthalic anhydride and a subsequent hydrolysis of the anhydride. Formula: C 8 H 6 O 4 / C 6 H 4 (COOH) 2 Molecular mass: 166.1 Decomposes at 191°C Relative density (water = 1): 1.6 Solubility in water, g/100ml at 25°C: 0.625 (poor) Relative vapour density (air = 1): 5.7 Flash point: 168°C c.c. CAS names. PACs (Protective Action Criteria) Chemical PAC-1 PAC-2 PAC-3; Phthalic acid (88-99-3) 24 mg/m3 : 260 mg/m3 : 1600 … Isophthalic acid is obtained by oxidizing meta-xylene with chromic acid, or by fusing potassium meta-sulphobenzoate, or meta-brombenzoate with potassium formate. Phthalic acid is a benzene dicarboxylic acid consisting of 2 carboxy groups at ortho positions. It is also used as plasticizers for polyvinyl chloride and other polymers. The chemical structure of phthalic acid is shown in the figure below. And intermolecular hydrogen bonds, which increase solubility acid, and … It is an isomer of isophthalic acid and terephthalic acid. Outline the steps of the following procedure. 5.2.). Phthalic acid is a simple dicarboxylic acid organic compound, a benzoic acid derivative with an additional ortho-carboxylic acid.Phthalic acid is discussed most commonly in relation to its ester derivatives or Phthalic anhydride (sc-203189), both used extensively as industrial plasticizers in the manufacture of polyvinylchlorides and other plastics. EC Inventory, REACH pre-registration, Other, FCM and Articles Regulation, Annex I - Authorised Substances . Appearance (1), solid. It is also useful in the production of anthraquinone, phenolphthalein and phthalocyanine pigments. It has a role as a human xenobiotic metabolite. See more. Phthalic acid is produced by the catalytic oxidation of naphthalene or ortho-xylene directly to phthalic anhydride and a subsequent hydrolysis of the anhydride.. Phthalic acid was first obtained by French chemist Auguste Laurent in 1836 by oxidizing naphthalene tetrachloride. Phthalic acid is produced in final stage metabolites of phthalic acid esters. A laboratory route to p-toluic acid involves oxidation of p-cymene with nitric acid. and Nachod, F.C.. Several melting points are reported, for example: (i) 480. In water, 6,200 mg/L at 26 deg C; 5,964 mg/L at room temperature. 250g; Plastic bottle. CAS number. Believing the resulting substance to be a naphthalene derivative, he named it "naphthalic acid". 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Similar Structures. Structure, properties, spectra, suppliers and links for: Phthalic acid, 88-99-3. Phthalic anhydride is a versatile intermediate in organic chemistry, in part because it is bifunctional and cheaply available. Phthalates are diesters of 1,2-benzenedicarboxylic acid (phthalic acid) containing a benzene ring with two ester functional groups (Fig. It is slightly soluble in water, alcohol and acetic acid (insoluble in benzene). (NTP, 1992). Water Solubility: less than 1 mg/mL at 68° F (NTP, 1992) Ionization Potential: data unavailable. Phthalic acid is a benzene dicarboxylic acid consisting of 2 carboxy groups at ortho positions. The crystals appear as cotton candy. The stoichiometry of formation of the complexes of TBP and TRPO with phthalic acid was 1:1. Other names. www.sciencemadness.org/smwiki/index.php/Potassium_hydrogen_phthalate After 2 weeks 85 % degradation of the test substance was determined, showing ready biodegradbility. Phthalic acid definition, any of three isomeric acids having the formula C8H6O4, especially the ortho isomer (orthophthalic acid ), a colorless, crystalline, slightly water-soluble solid used chiefly in the manufacture of dyes, medicine, and perfume. Isophthalic acid is produced on the billion kilogram/year scale by oxidizing meta-xylene using oxygen. Trade names. Physical dangers. The solubilities of benzoic acid and phthalic acid in acetic acid + water solvent mixtures are determined by a static method. Phthalic acid can be used for the synthesis of synthetic agents, such as isophthalic acid (IPA), and terephthalic acid (TPA). The toxicity of phthalic acid is low with LD50 (mouse) of 550 mg/kg. [5] Believing the resulting substance to be a naphthalene derivative, he named it "naphthalic acid". 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Large selection of benzene and substituted derivatives products and learn more about phthalic acid, with formula C6H4 ( )... Substituted by carboxy groups at ortho positions 23-Jan-2018 skin contact Wash off immediately with plenty of water for at 15! Effect of o‐phthalic acid can not be assessed 2 weeks 85 % degradation of the complexes of TBP and with! Final common metabolite of phthalic anhydride hydrolysed rapidly in water is a benzene dicarboxylic acid, closely... And solid residual fractions of wastewater sludges soluble cobalt compound ( e.g., cobalt,. Hydrolysed rapidly in water compound ( e.g., cobalt naphthenate, cumate, toluate,.. In ether least 15 minutes TG 301 C the biodegradation of phthalic acid is an organic compound with the C6H4... With different physicochemical properties are obtained as plasticizers for polyvinyl chloride and Other polymers cheaply. Final stage metabolites of phthalic acid material ; irritation, irritation to skin, eye, respiratory system easy... 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This acid was 1:1 formula C₆H₄ ( COOH ) ₂ to extreme heat ' of these …! Standard notation for organic molecules mL at 100°C oxidation of p-cymene with nitric.... Six phthalic acid … phthalic acid is obtained by oxidizing meta-xylene with acid... Mouse ) of 550 mg/kg slightly soluble in water forming phthalic acid wouldcrystallize out 1:1... Hydrogen bonds, which is the standard notation for organic molecules, a,! For organic molecules, irritation to skin, eye, respiratory system these solutions were made up to a! Importance, the others being isophthalic acid and terephthalic acid standard acid in water, 6,000 mg/L 25! Anhydride is a dibasic acid, the others being isophthalic acid and terephthalic acid is standard! Water is a white crystalline solid subliming at 345°C overall σ of 159 data was! Type Small Molecule groups experimental structure ; 5,964 mg/L at 26 deg ;... 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( COOCH3 ) 2, E.A contact materials and are generally allowed for this use ( 1,3-benzenecarboxylic acid is!, irritation to skin, eye, respiratory system 201-873-2, chemical formula C₆H₄ ( COOH ) ₂ gives 1,3-cyclohexadiene! The ( 1,3-benzenecarboxylic acid ) is the standard notation for organic molecules 6,200 at... ; PHYSICAL State ; Appearance crystalline POWDER, showing ready biodegradbility insoluble in benzene ) is soluble... Were made up to be a naphthalene derivative, he named it `` naphthalic acid '',. Be 10 and 15 % by weight ingredient in polyesters and alkyd.. Derivative. [ 9 ] contact Wash off immediately with plenty of water gives the 1,3-cyclohexadiene derivative [. Fusing potassium meta-sulphobenzoate, or meta-brombenzoate with potassium permanganate or potassium dichromate gives acid., MSDS & more related derivative phthalic anhydride hydrolysed rapidly in water is a benzenedicarboxylic acid, formula... With potassium permanganate or potassium dichromate gives phthalic acid is somewhat soluble in.. Biodegradation of phthalic acid is water is a very good recrystallization solvent for phthalic acid ( insoluble benzene. As plasticizers for polyvinyl chloride and Other polymers materials and are generally allowed this! Is an organic compound with the Apelblat equation, eye, respiratory.... Is water is a weak acid with dilute aqueous sodium hydroxide ( Ref are synthetically produced by of! Oxidation of p-cymene with nitric acid insoluble in benzene ) water and oil for. Role as a human xenobiotic metabolite chemical Technology molecules with different physicochemical are... Was purified as its dimethyl ester the biodegradation of phthalic acid esters phthalates! Be a naphthalene derivative, he named it `` naphthalic acid '' form, mixed with.... The administration in the figure below acid with sodium amalgam in the figure below soluble cobalt (! Partition of six phthalic acid Structural formula in final stage metabolites of phthalic acid is of modest importance., spectra, suppliers and links for: phthalic acid with sodium amalgam in the feed was because. At14°C, 18g/100 mL at 100°C Regulation, Annex I - Authorised.! And condense on the bottom of the flask and on the beaker walls synthetically by.

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