Description

Dimethyl Phthalate (CAS 131-11-3) is a high-purity organic compound with the molecular formula C₁₀H₁₀O₄, widely utilized in research and industrial applications. Known chemically as dimethyl benzene-1,2-dicarboxylate, this colorless, oily liquid exhibits excellent solvency properties and is commonly employed as a plasticizer, solvent, or fixative. With a molecular weight of 194.18 g/mol and a boiling point of approximately 282°C, Dimethyl Phthalate is valued for its stability and compatibility with polymers, resins, and fragrances. Our product is rigorously tested to ensure ≥99% purity, making it ideal for analytical standards, formulation development, and specialized chemical synthesis. Packaged in amber glass bottles or HDPE containers to prevent degradation, it is suitable for laboratory, pharmaceutical, and industrial use.

Properties

• CAS Number: 131-11-3
• Complexity: 200
• IUPAC Name: dimethyl benzene-1,2-dicarboxylate
• InChI: InChI=1S/C10H10O4/c1-13-9(11)7-5-3-4-6-8(7)10(12)14-2/h3-6H,1-2H3
• InChI Key: NIQCNGHVCWTJSM-UHFFFAOYSA-N
• LogP: log Kow = 1.60
• Exact Mass: 194.05790880
• Molecular Formula: C10H10O4
• Molecular Weight: 194.18
• SMILES: COC(=O)C1=CC=CC=C1C(=O)OC
• Topological: 52.6
• Monoisotopic Mass: 194.05790880
• Physical Description: Dimethyl phthalate appears as a water-white liquid without significant odor. Denser than water and insoluble in water. Hence sinks in water. Flash point 300 °F. Eye contact may produce severe irritation and direct skin contact may produce mild irritation. Used in the manufacture of a variety of products including plastics, insect repellents, safety glass, and lacquer coatings.
• Color/Form: Pale yellow
• Odor: Slight aromatic odor
• Boiling Point: 542.7 °F at 760 mmHg
• Melting Point: 32 °F
• Flash Point: 295 °F
• Solubility: less than 1 mg/mL at 68 °F
• Density: 1.1905 at 68 °F – Denser than water; will sink
• Vapor Density: 6.69 – Heavier than air; will sink
• Vapor Pressure: 1 mmHg at 212.5 °F ; 5 mmHg at 269.2 °F; 10 mmHg at 297.7 °F
• Stability/Shelf Life: Stable under recommended storage conditions.
• Autoignition Temperature: 915 °F
• Viscosity: 17.2 cP at 25 °C
• Heat of Combustion: -119.7 kg-cal/mole
• Heat of Vaporization: 93.1 g-cal/g
• Ionization Potential: 9.64 eV
• Refractive Index: Index of refraction: 1.5168 at 20 °C/D
• Synonyms: Dimethyl phthalate, 131-11-3, DIMETHYLPHTHALATE, Avolin, Mipax, Palatinol M, Solvarone, Fermine, Solvanom, Dimethyl o-phthalate, Unimoll DM, Phthalic acid dimethyl ester, Repeftal, Methyl phthalate, Dimethyl 1,2-benzenedicarboxylate, 1,2-Benzenedicarboxylic acid, dimethyl ester, ENT 262, dimethylphtalate, Caswell No. 380, DMF (insect repellant), Dimethyl benzeneorthodicarboxylate, Phtalate de dimethyle, NSC 15398, CCRIS 2674, HSDB 1641, UNII-08X7F5UDJM, EINECS 205-011-6, 08X7F5UDJM, NSC-15398, EPA Pesticide Chemical Code 028002, DTXSID3022455, AI3-00262, Phthalic acid methyl ester, NTM, DTXCID502455, Dimethyl 1,2-benzendicarboxylate, EC 205-011-6, DIMETHYL PHTHALATE (II), DIMETHYL PHTHALATE [II], DIMETHYL PHTHALATE (MART.), DIMETHYL PHTHALATE [MART.], Dimethyl phthalate [BSI:ISO], Bisoflex DMP, Ftalato di metile, Caswell No 380, phthalsauredimethylester, FIFRA 028002, USEPA/OPP Pesticide Code: 028002, 1,2 Benzene dicarboxylacid, dimethylester, 205-011-6, dmp, dimethyl benzene-1,2-dicarboxylate, Phthalsaeuredimethylester, Phthalic acid, dimethyl ester, Dimethyl benzene-o-dicarboxylate, 1,2-Benzenedicarboxylic acid, 1,2-dimethyl ester, DMF, insect repellent, CHEBI:4609, CHEMBL323348, Phthalic acid, bis-methyl ester, NCGC00090692-02, Dimethyl phthalate 5000 microg/mL in Methanol, Dimethyl phthalate, >=99%, methyl 2-(methoxycarbonyl)benzoate, RCRA waste number U102, CAS-131-11-3, PHTHALIC ACID DIMETHYL ESTER (D6), Phthalsaeuredimethylester [German], Phtalate de dimethyle [ISO-French], Dimethyl phthalate, PESTANAL(R), analytical standard, RCRA waste no. U102, Dimethylester kyseliny ftalove [Czech], Benzenedicarboxylic acid, dimethyl ester, Dimethylester kyseliny ftalove, Density Standard 1191 kg/m3, Kemester DMP, Kodaflex DMP, 1,dimethyl ester, MFCD00008425, Uniplex 110, Dimethyl orthophthalate, 1,2-dimethyl benzene-1,2-dicarboxylate, 1,2-dimethyl phthalate, Dimethyl phthalate, 99%, Dimethyl phthalate [USP], WLN: 1OVR BVO1, 1,2-benzenedicarboxylic acid 1,2-dimethyl ester, SCHEMBL34630, Dimethyl phthalate, AR,99%, Dimethyl phthalate, CP,99%, MLS002177801, BIDD:ER0349, Dimethyl phthalate (Standard), SCHEMBL130031, SCHEMBL670604, SCHEMBL7647064, DIMETHYL PHTHALATE [MI], DIMETHYL PHTHALATE [ISO], HY-N7106R, DIMETHYL PHTHALATE [HSDB], MSK1116, HMS5084E16, DIMETHYL PHTHALATE [WHO-DD], HY-N7106, NSC15398, Tox21_113536, Tox21_202145, Tox21_301045, BDBM50090983, s5378, SBB060335, STL283931, AKOS008969337, CCG-266531, DB13336, NCGC00090692-01, NCGC00090692-03, NCGC00090692-04, NCGC00090692-05, NCGC00090692-06, NCGC00254947-01, NCGC00259694-01, BS-20466, SMR000777937, DB-062803, benzene-1,2-dicarboxylic acid dimethyl ester, CS-0013572, NS00010268, P0302, ST50406382, EN300-18366, G72747, Dimethyl phthalate, SAJ special grade, >=99.0%, Q423551, Z57902306, Density Standard 1191 kg/m3, H&D Fitzgerald Ltd. Quality, Phthalic acid, bis-methyl ester 1000 microg/mL in Acetonitrile, BENZENE,1,2-DICARBOXYLIC ACID,DIMETHYL ESTER (PHTHALIC ACID,DIMETHYL ESTER), InChI=1/C10H10O4/c1-13-9(11)7-5-3-4-6-8(7)10(12)14-2/h3-6H,1-2H

Application

Dimethyl Phthalate is primarily used as a plasticizer in cellulose-based polymers, enhancing flexibility in films, coatings, and adhesives. It also serves as a solvent for dyes and perfumes due to its low volatility and high solvency power. In entomology, it acts as an insect repellent, particularly against mosquitoes and ticks. Additionally, it finds applications in cosmetics and personal care products as a fixative for fragrances.

Safety and Hazards

GHS Hazard Statements

• H402: Harmful to aquatic life [Hazardous to the aquatic environment, acute hazard]

Precautionary Statements

• P273, and P501

Hazard Classes and Categories

• Serious eye damage/eye irritation – Category 2B
• Specific target organ toxicity – Single exposure – Category 3
• Hazardous to the aquatic environment – Category 3

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.