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Environmental fate & pathways

Henry's Law constant

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Description of key information

Conclusion: DTDP is minimally volatile.

Key value for chemical safety assessment

Additional information

DTDP vapor pressure is very low, 0.0000000363 Pa, which suggests very limited volatilization from the terrestrial compartment. In comparison, Henry's Law constant for DTDP, 275 Pa.m3/mole at 25 degrees C, indicates that volatilization from water is not expected to occur at a rapid rate, but may occur at a significant rate. DTDP can volatilize to air from aqueous environments at a significant rate, but is expected to have limited volatilization from soil, which can in large part be explained by its high Kocvalue.