Dimethyl phthalate
Dimethyl phthalate is manufactured commercially via the esterification of phthalic anhydride with methanol. The reaction can be catalysed by a strong acid, such as sulfuric acid; various lewis acids may be used as an alterative, including complexes of titanium, zirconium or tin.
Phthalates in Cosmetics | FDA
Phthalates are used in a variety of cosmetics and personal care products. Phthalates are chemical compounds developed in the last century that are used to make plastics more durable. These...
Determination of phthalates in bottled waters using solid-phase
In another study, the phthalate residues were determined in ten brands of bottled water in Saudi Arabia using head-space solid phase microextraction followed by gas chromatography and mass spectrometry (Al-Saleh et al., 2011). The used SPME fiber was PDMS/DVB (65 μm) and the sample vial was heated at 90 °C before head-space extraction.
Dimethyl Phthalate - US EPA
Dimethyl phthalate is a colorless oily liquid with a slightly sweet odor. (3) The chemical formula for dimethyl phthalate is C 10 H 10 O 4, and the molecular weight is 194.19 g/mol. (1) The vapor pressure for dimethyl phthalate is 4.19 × 10-3 mm Hg at 20 °C, and it has a log octanol/water partition coefficient (log K ow) of 1.56. (1)
Degradation of dimethyl phthalate through Fe(II)/peroxymonosulphate
The degradation intermediates of DMP were monomethyl phthalate (MMP), phthalic acid and benzoic acid. Discoveries of this study had raised the current understanding of the application of FA keeping the cycles of Fe(II)/Fe(III) for peroxymonosulphate activation, which could afford valuable information for the degradation of organic pollutants by FA/Fe(II)/PMS.
- What is dimethyl phthalate (DMP)?
- Dimethyl phthalate (DMP) is the low molecular weight phthalate ester used in plastic products to increase flexibility, pellucidity, resilience, and longevity. Phthalates persist in the environment with a half-life of ≈ 20 years, and aqueous hydrolysis half-lives for DMP are 3.2 years.
- Is dimethyl phthalate soluble in water?
- Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ?
- ) Dimethyl phthalate (DMP) is an organic compound and phthalate ester. it is a colourless and oily liquid that is soluble in organic solvents, but which is only poorly soluble in water (~4 g/L).
- How much monomethyl phthalate (DMP) is toxicity?
- After an orally administered dose of 0.1mL of DMP, about 77% of monomethyl phthalate and 8% of DMP have been detected in urine collected for 24 hours from male rats. Acute oral toxicity results in an LD50 of 8,2, 5,2, 2,9, 10,1 and 8,6 mg/kg for rats, rabbits, guinea pigs, chicks, and mice respectively.
- How is dimethyl phthalate made?
- Dimethyl phthalate is manufactured commercially via the esterification of phthalic anhydride with methanol. The reaction can be catalysed by a strong acid, such as sulfuric acid; various lewis acids may be used as an alterative, including complexes of titanium, zirconium or tin.
- Is dimethyl phthalate a good plasticizer for PVC?
- Unlike most other phthalate esters, dimethyl phthalate is rarely used as a plasticizer for PVC. It is considered too volatile and causes excessive fuming during PVC processing. It is a good plasticizer for cellulose-esters, including cellulose acetate, cellulose acetate butyrate and cellulose propionate compositions.
- Does Micrococcus SP biodegrade dimethyl phthalate?
- “Process optimization and kinetic study of biodegradation of dimethyl phthalate by KS2, a novel strain of Micrococcus sp.” Scientific Reports 13 1 (2023): 3900. Dimethyl Phthalate is a colorless, oily liquid or solid with a slightly sweet odor. It is used as a plasticizer and solvent.
