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Toxicological Profile for Ethion. Atlanta (GA): Agency for Toxic Substances and Disease Registry (US); 2000 Sep.
Toxicological Profile for Ethion.
Show detailsTable 3-2Physical and Chemical Properties of Ethion
| Property | Information | Reference |
|---|---|---|
| Molecular weight | 384.48 | Merck 1989 |
| Color | White/colorless to amber | Tomlin 1994 |
| Physical state | Liquid | Tomlin 1994 |
| Melting point | −12 to −13 | Merck 1989 |
| Boiling point | 164–165 at 0.3 mm Hg | EPA 1989b |
| Density at 19 °C | 1.220 at 20 °C | Merck 1989 |
| Odor | Odorless in pure form; technical product has a disagreeable odor | HSDB 1998 |
| Odor threshold: | ||
| Water | No data | |
| Air | No data | |
| Solubility: | ||
| Fresh water at 25 °C | 0.6 mg/L | Sharom et al. 1980a |
| Salt water at 25 °C | No data | |
| Organic solvent(s) | Xylene, chloroform, acetone, kerosene plus 1% methyl ethyl ketone, benzene | Merck 1989 |
| Most organic solvents | HSDB 1998 | |
| Partition coefficients: | ||
| Log Kow | 5.073 | Bowman and Sans 1983 |
| Log Koc | 4.189 (average in four soils) | HSDB 1998 |
| 3.810 (organic soil) | Sharom et al.1980b | |
| 3.936 (beverly sandy loam) | ||
| 4.004 (plainsfield sand) | ||
| Vapor pressure at 20 °C | 1.5×10−6 mm Hg | EPA 1989b; Merck 1989 |
| Henry’s law constant: | 6.9×10−7 atm m3/mole | HSDB 1998 |
| at 25 °C | ||
| Hydrolysis half-life | ||
| 30 °C (sterile water) | pH 4 & 7 146 days | Dierberg and Pfeuffer 1983 |
| pH 8 62 days | ||
| pH 10 1 day | ||
| 30 °C (non-sterile drainage water) | 26 days | |
| 25 °C (water with 1% ethanol) | pH 4.5 99 weeks | Chapman and Cole 1982 |
| pH 5 63 weeks | ||
| pH 6 58 weeks | ||
| pH 7 25 weeks | ||
| pH 8 8.4 weeks | ||
| Autoignition temperature | No data | |
| Flashpoint | No data | |
| Flammability limits | May burn but does not ignite readily | HSDB 1998 |
| at 25 °C | ||
| Reactivity | Hydrolyzed by acids and alkalies | Tomlin 1994 |
| Emits toxic oxides of sulfur and phosphorous (T≥150°C) | Sax 1984 | |
| Slowly oxidized in air | Tomlin 1994 | |
| Conversion factors (25 °C) | 1 ppm = 15.7 mg/m3 | Calculated |
| 1 mg/m3 = 0.064 ppm | ||
| Explosive limits | Tends to decompose with violence above 150 °C | HSDB 1998 |
- Table 3-2, Physical and Chemical Properties of Ethion - Toxicological Profile fo...Table 3-2, Physical and Chemical Properties of Ethion - Toxicological Profile for Ethion
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