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Physical Properties

Dimethyl sulfate dissolves in alcohol, ether, and benzene. It is slightly soluble in water (2.8 g/100 mL at 18°C [64.4°F]) and hydrolyzes to methyl sulfuric acid, then slowly to sulfuric acid and methanol at 18°C [64.4°F]) or above. DuPont technical grade dimethyl sulfate meets specifications and has typical analyses as shown in Table 1. Additional physical properties are shown in Table 2. Density, vapor pressure, and viscosity are plotted against temperature in Figures 1, 2, and 3. 

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Figure 1  Figure 2  Figure 3