ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994 - Page 9 of 20 Table 3.
Physical Properties(1)
Compound Solubility in Water (alphabetically) at 20 °C) 1. Azinphos methyl 20(3) 2. Chlorpyrifos — 3. Diazinon 40 4. Dicrotophos miscible 5. Disulfoton nearly insol.
Liquid Density
MP
BP
(g/mL)
(°C)
°C (mm Hg)
1.44
(3)
20 12. Methyl parathion 20(3) 13. Mevinphos 20(4) (7)
20 14. Monocrotophos
Pascal
unstable >200
none found
73-74 30(8) 41-42
1.116-1.118
liquid
decomp. >120
1.216
liquid
1.144
oil
(3)
20 6. Ethion slightly sol. 7. Ethoprop 750 8. Fenamiphos 20(3) 9. Fonofos 13(7) 10. Malathion 30(6) 11. Methamidophos readily sol.
Vapor Pressure
—
mm Hg @ °C(mg/L
0.00018
1.35x10 -6
0.0025
1.87x10 -5
25
0.019
1.4x10 -4
20
400 (760)
none found
—
0.024
1.8x10 -4
0.0074
5.4x10 -5
20
(3)
1.220
insol. -12 to -13
—
0.0002
1.5x10 -6
1.094
oil
—
0.047
3.5x10 -4
none found
49 329 liquid
—
0.00012
9x10 -7
1.16 1.23 145 1.31
2.9 54.
— 1.358 50 1.25 miscible
37-38 20.6 (4)
— none found
54-55 (5)
—
none found
156 (0.7) (6) —
— 325 (760)
—
26
(4)
0.005
4x10 -5
0.04
3x10 -4
0.0023
1.7x10 -5
0.0002
1.5x10 -6
0.4
3x10 -3
0.29
2.2x10 -3
0.0009
7x10 -6
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
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