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EC number: 271-089-3
CAS number: 68515-47-9
Conclusion (direct photodegradation - soil): Direct photolysis will not contribute to the degradation of DTDP in the terrestrial environment because it does not absorb light at wavelengths >290 nm, i. e., in the range that contribute to this process.
photochemical degradation in soil occurs through the absorbance of solar
radiation by a substance. A
prerequisite for direct photodegradation is the ability of one or more
bonds within a molecule to absorb ultraviolet (UV) /visible light in the
290 to 750 nm range. Light wavelengths longer than 750 nm do not contain
sufficient energy to break chemical bonds, and wavelengths below 290 nm
are shielded from the earth by the stratospheric ozone layer. DTDP does
not absorb light within a range of 290 to 750 nm.
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