Phthalic acid. Other . Microscale. Phthalates have been used in food contact materials and are generally allowed for this use. Shop a large selection of Benzene and substituted derivatives products and learn more about Phthalic acid, 99%, ACROS Organics. Phthalic Acid is an isomer of isophthalic acid and terephthalic acid. It is a dibasic acid, with pKas of 2.89 and 5.51. The stoichiometry of formation of the complexes of TBP and TRPO with phthalic acid was 1:1. Stability stable. 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 number. Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. 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. Terephthalic acid (para-Phthalic acid, 1,4-Benzenedioic acid), a raw material for polyethylene terephthalate (PET) production, is one of the most impo... Quality confirmed by NMR & HPLC. The crystals appear as cotton candy. Hydrolysis of anhydrides is not typically a reversible process. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a A laboratory route to p-toluic acid involves oxidation of p-cymene with nitric acid. The process of the first patent uses a xylene soluble cobalt compound (e.g., cobalt naphthenate, cumate, toluate, etc.) Dimethyl terephthalate(DMT) is an organic compound with the formula C6H4(COOCH3)2. The solubilities or 'apparent-solubilities' of these substa … It is slightly soluble in water, alcohol and acetic acid (insoluble in benzene). Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. (2.) Structure, properties, spectra, suppliers and links for: Phthalic acid, 88-99-3. The solubility of o-phthalic acid in methanol + water and methanol + butyl acetate was measured at temperatures ranging from (295.87 to 359.75) K using a laser-monitoring observation technique at atmospheric pressure. and Nachod, F.C.. Several melting points are reported, for example: (i) 480. Find chemicals information Phthalic acid at guidechem, professional and easy to use. Solubility insoluble in water. This acid was invented by a great French chemist Auguste Laurent through the oxidizing naphthalene tetrachloride. The administration in the feed was selected because of only slight solubility of phthalic acid in water and oil. Depending on the alcohols employed, molecules with different physicochemical properties are obtained. Trade names. PHTHALIC ACID is a carboxylic acid. Phthalic acid is a benzene dicarboxylic acid consisting of 2 carboxy groups at ortho positions. Phthalic Anhydride CAS RN: 85-44-9 Solubilities. 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. Related Catalog MW: 390.5 Log K ow: 7.94 Solubility in water: 0.34 mg l −1: Pharmaceutical packages, construction materials, glues, varnishes: Di-(n-butyl)-phthalate: DBP: MW: 278.4 Log K ow: 4.45 Solubility in water: 11.2 mg l −1: Solvent, aroma fixative, plasticizer of nitrocellulose and poly acetate vinyl ester: Di … [4], Phthalic acid was first obtained by French chemist Auguste Laurent in 1836 by oxidizing naphthalene tetrachloride. It is a white crystalline solid subliming at 345°C. The solubility of phthalic acid is water is: 0.54g/100 mL at14°C, 18g/100 mL at 100°C. The 2D chemical structure image of phthalic acid is also called skeletal formula, which is the standard notation for organic molecules. Structure for Phthalic Acid (DB02746) × Close. Phthalic acid can be used for the synthesis of synthetic agents, such as isophthalic acid (IPA), and terephthalic acid (TPA). The phthalic acid is somewhat soluble in water. Handbook of Aqueous Solubility Data Second Edition. It is the conjugate acid of a phthalate(1-) and a phthalate. Safety Information. - The amount of water required to dissolve 25g of phthalic acid (using the solubility information in Experiment 2) is 139mL. A quantitative structure-property relationship (QSPR) method for the correlation of physical-chemical properties and partition coefficients, namely the 'three solubility' approach, is described and applied to a group of 22 phthalate esters. Reacts, usually slowly with water to form phthalic acid and heat [Merck 11th ed. CAS 88-99-3, EC Number 201-873-2, chemical formula C₆H₄(COOH)₂. The apparent extraction equilibrium constant for TRPO is much larger than that for TBP. Dust explosion possible if in powder or granular form, mixed with air. Fire Hazard. It is also incompatible with oxidizers. Phthalsäure . Weight Average: 166.1308 Monoisotopic: 166.02660868 Chemical Formula C 8 H 6 O 4 Synonyms Not Available Pharmacology Indication Not Available … It is an isomer of isophthalic acid and terephthalic acid. Get medical attention. It has a role as a human xenobiotic metabolite. Slightly soluble in water, methanol and ether. 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. 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. PHTHALIC ACID: ICSC: 0768: PHYSICAL & CHEMICAL INFORMATION; Physical State; Appearance CRYSTALLINE POWDER. Soluble in water, alcohol and etherSoluble in alcohol. Applications. 1989]. Physical dangers. Believing the resulting substance to be a naphthalene derivative, he named it "naphthalic acid". Phthalic acid for synthesis. Phthalic acid is the final common metabolite of phthalic acid esters (PAEs). Place a round bottom flask filled with water on top of the beaker and increase the temperature to dehydrate the phthalic acid to phthalic anhydride. Phthalic acid has applications in the preparation of phthalate ester plasticizers[1]. Outline the steps of the following procedure. Phthalic acid, also called 1, 2-benzenedicarboxylic Acid, colourless, crystalline organic compound ordinarily produced and sold in the form of its anhydride. The phthalic anhydride will sublime and condense on the bottom of the flask and on the beaker walls. Believing the resulting substance to be a naphthalene derivative, he named it "naphthalic acid". After 2 weeks 85 % degradation of the test substance was determined, showing ready biodegradbility. Partition of six phthalic acid esters in soluble and solid residual fractions of wastewater sludges. recrystallize phthalic acid, a compound that is used to make synthetic polymers such as Dacron. [5] Believing the resulting substance to be a naphthalene derivative, he named it "naphthalic acid". Excerpt from ERG Guide 156 [Substances - Toxic and/or Corrosive (Combustible / Water-Sensitive)]: Combustible material: may burn but does not ignite readily. Hydrolysis by hot water forms ortho-phthalic acid. It is the conjugate acid of a phthalate(1-) and a phthalate. www.sciencemadness.org/smwiki/index.php/Potassium_hydrogen_phthalate Brown, H.C., et al., in Baude, E.A. (report to one decimal place) (Showcalculations) 44.1) and they are synthetically produced by esterification of phthalic acid with different alcohols. 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. Phthalic acid, also called 1, 2-benzenedicarboxylic Acid, colourless, crystalline organic compound ordinarily produced and sold in the form of its anhydride. Typically phthalate esters are prepared from the widely available phthalic anhydride. EC Inventory, REACH pre-registration, Other, FCM and Articles Regulation, Annex I - Authorised Substances . Water Solubility: less than 1 mg/mL at 68° F (NTP, 1992) Ionization Potential: data unavailable. Volatilization of phthalic acid from moist soil surfaces is not expected to be an important fate process (SRC) given an estimated Henry's Law constant of 2X10-11 atm-cu derived from its vapor pressure, 6.36X10-7 mm Hg (3), and water solubility, 6965 mg/L (4). Structure, properties, spectra, suppliers and links for: Phthalic acid, 88-99-3. Your email address will not be published. In water, 6,000 mg/L at 25 deg C. Kirk-Othmer Encyclopedia of Chemical Technology . It is a white crystalline solid subliming at 345°C. Zheng Z(1), He PJ, Fu Q, Shao LM, Lee DJ. Solution for The solubility of phthalic acid in water is 0.54 g/100 mL at 14°C and 18 g/100 mL at 99°C.What is the smallest volume of boiling water that should… Phthalic acid is however easily dehydrated to form phthalic anhydride. MOL SDF 3D-SDF PDB SMILES InChI. Other identifiers. It is also useful in the production of anthraquinone, phenolphthalein and phthalocyanine pigments. 250g; Plastic bottle. Appearance (1), solid. Production. EC Inventory, REACH pre-registration, Other, FCM and Articles Regulation, Annex I - Authorised Substances . [5][6] After the Swiss chemist Jean Charles Galissard de Marignac determined its correct formula,[7] Laurent gave it its present name. 250g; Plastic bottle. Production. IUPAC names. It interacts with magnesium oxide films to generate the following inhibitor mechanisms on a substrate metal to be protected: Absorption by the process of chemisorption, forming a protective film in conjunction with metallic ions It is also used as plasticizers for polyvinyl chloride and other polymers. It is a white solid that is poorly soluble in water but soluble in acetone. Your email address will not be published. ... 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. Results of our experimental measurements, combined with published solubility data for isophthalic acid dissolved in ethyl acetate, acetic acid, acetophenone, acetone, cyclohexanone, propyl acetate… Phthalic acid is an aromatic dicarboxylic acid, with formula C6H4(CO2H)2. Octanol/water partition coefficient as … 2H 2 O. I n the preparation of phthalic acid it is often set free by treating its sodium salt with sulfuric acid and it was for this reason that its solubility was determined in sodium sulfate solutions. The acid is soluble in water, sparingly soluble in ether. This chemical is sensitive to exposure to extreme heat. Because of these differences, the local effect of o‐phthalic acid cannot be assessed. AEGLs (Acute Exposure Guideline Levels) No AEGL information available. The experimental data were correlated with the Apelblat equation. The toxicity of phthalic acid is low with LD50 (mouse) of 550 mg/kg. It sublimes when … Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale. The process employs a cobalt-manganese catalyst. PACs (Protective Action Criteria) Chemical PAC-1 PAC-2 PAC-3; Phthalic acid (88-99-3) 24 mg/m3 : 260 mg/m3 : 1600 … Recrystallization of Phthalic Acid. Phthalic acid esters (phthalates) have been used as industrial plasticizers in a wide range of consumer products. How many mL of boiling water are required to dissolve 92.0 g ofphthalic acid? Isophthalic acid (1,3-benzenecarboxylic acid) is the meta form of phthalic acid. 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In poly bottle Safety & Documentation meta-brombenzoate with potassium formate intramolecular hydrogen bond, which is the common... 6,000 mg/L at room temperature overall σ of 159 data points was 0.70 %, al.., Other, FCM and Articles Regulation, Annex I - Authorised Substances regarding phthalic acid is modest! The resulting substance to be a naphthalene derivative, he named it naphthalic. Has a role as a human xenobiotic metabolite benzene substituted by carboxy groups position... Of wastewater sludges REACH pre-registration, Other, FCM and Articles Regulation, Annex I Authorised. Gives phthalic acid ( DB02746 ) phthalic acid solubility Close large selection of benzene and substituted derivatives products learn! Chemical Technology phthalate ( 1- ) and they are synthetically produced by the catalytic oxidation of with!