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Substance: According to a Mackay Level I model calculation the main target compartments for 2,2,4(or 2,4,4)-trimethylhexane-1,6-diisocyanate will be sediment (30 %) and soil (30 %) followed by the atmosphere (28 %) and the hydrosphere (12 %). The calculated Henry’s Law constant of 6.51 Pa m³/mol at 20 °C indicates moderate volatility of 2,2,4(or 2,4,4)-trimethylhexane-1,6-diisocyanate from surface waters.With a calculated Koc of 22570 l/kg, the sorption potential of 2,2,4(or 2,4,4)-trimethylhexane-1,6-diisocyanate to soil or sediment organic matter is expected to be very high (Blume scale). However, environmental transport and distribution considerations for 2,2,4(or 2,4,4)-trimethylhexane-1,6-diisocyanate are of little relevance because the reaction with water is expected to eliminate the substance from the environment rapidly.

Hydrolysis product: According to a Mackay Level I model calculation the main target compartments for 2,2,4(or 2,4,4)-trimethylhexane-1,6-diisocyanate will be sediment (30 %) and soil (30 %) followed by the atmosphere (28 %) and the hydrosphere (12 %). The calculated Henry’s Law constant of 6.51 Pa m³/mol at 20 °C indicates moderate volatility of 2,2,4(or 2,4,4)-trimethylhexane-1,6-diisocyanate from surface waters.With a calculated Koc of 22570 l/kg, the sorption potential of 2,2,4(or 2,4,4)-trimethylhexane-1,6-diisocyanate to soil or sediment organic matter is expected to be very high (Blume scale). However, environmental transport and distribution considerations for 2,2,4(or 2,4,4)-trimethylhexane-1,6-diisocyanate are of little relevance because the reaction with water is expected to eliminate the substance from the environment rapidly.