| Catalogue number | C101336 |
| Chemical name | Dimethyl phthalate |
| CAS Number | 131-11-3 |
| Synonyms | benzene-1,2-dicarboxylic acid dimethyl ester |
| Molecular Weight | C10H10O4 |
| Formula | 194.2 |
| Purity | 98% |
| Physical Description | Oil |
| Solvent | Chloroform, Dichloromethane,DMSO |
| Storage | Stored at 2-8°C, Protected from air and light, refrigerate or freeze |
| Applications | Insect repellent. Diethyl phthalate (DEP) and dimethyl phthalate (DMP), phthalic acid ester (PAE) plasticizers, were evaluated for developmental toxicity because of reports in the literature that some PAE were embryotoxic and teratogenic. A previous study (Singh et al., '72) suggested that an increased incidence of skeletal defects in rats might result from gestational exposure to DEP (0.6-1.9 g/kg) or DMP (0.4-1.3 g/kg), ip, on gestational days (gd) 5, 10, and 15. In the current study DEP (0, 0.25, 2.5, and 5%) or DMP (0, 0.25, 1, and 5%) in feed (approximately 0.2-4.0 g/kg/day) were supplied to timed-mated rats from gd 6 to 15. Treatment with 5% DMP resulted in increased relative maternal liver weight. Also, animals exhibited reduced body weight gain during treatment (5% DEP or DMP) and during gestation (5% DEP). Weight gain corrected for gravid uterine weight was also reduced in animals fed 5% DEP. However, high-dose treatment with either DEP or DMP resulted in changes in food and water consumption paralleling the body weight reductions, suggesting that apparent toxic effects on maternal body weight may reflect PAE/feed unpalatability. Treatment with 2.5% DEP resulted in only transient changes in body weight during early treatment. The only maternal effects at 0.25 or 1% DMP were minor changes in food and/or water consumption, and there were no effects at 0.25% DEP. Thus, the NOAELs for maternal toxicity were 1% DMP and 0.25% DEP. In contrast to the observed maternal toxicity, there was no effect of DEP or DMP treatment on any parameter of embryo/fetal development, except an increased incidence of supernumerary ribs (a variation) in the 5% DEP group. These results do not support the conclusion of other investigators that DEP and DMP are potent developmental toxicants. Rather, they suggest that the short-chain PAE are less developmentally toxic than PAE with more complex substitution groups, e.g., di(2-ethylhexyl) phthalate, mono(2-ethylhexyl) phthalate, and butyl benzyl phthalate. |
| References | 1. Aldrich Library of 13C and 1H FT NMR Spectra, 1992, 2, 1088A; 1274A; 1274C; 1275A; 1275B; 1275C; 1276A; 1276B; 1276C; 1277B 2. Teratology.1993 Jul;48(1):33-44. |
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After Receiving
The packaging of the product may have turned upside down during transportation, resulting in the product adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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