Registration Dossier
Registration Dossier
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EC number: 500-734-6 | CAS number: 162492-01-5
Endpoint summary
Administrative data
Description of key information
Additional information
Hexamethylene diisocyanate, trimers, reaction products with 2-hydroxyethyl acrylate (CAS 162492-01-5) is characterized by low water solubility (< 0.54 mg/L, 20 °C), low vapor pressure (8.1E-08 hPa at 20 °C), low to high mobility in water (log Koc = 2.73 - 15.09, KOCWIN v2.00) and a log Pow of 4.23 (20 °C, OECD 117). Thus, the substance is likely to partition to sediment and soil particles. Due to the low vapor pressure, the substance has a low potential for evaporation to the atmosphere. Thus, indirect photodegradation in air is not a relevant degradation process. Furthermore, the substance is not rapidly biodegradable (0% in 28 d, OECD 301 B). The substance is expected to be hydrolytically stable at pH4 and pH7 (DT50 at pH4: > 1 year, DT50 at pH7: 8.36 - 16.72 d) based on QSAR calculations using SPARC. Under alkaline conditions (pH9) the substance is expected to hydrolyse quickly with a DT50 < 24 h (1.92 - 4.08 h). However, since the substance is poorly soluble in water (< 0.54 mg/L, 20 °C, OECD 105), the experimental determination of hydrolysis is technically not feasible. It is not possible to establish a suitable analytical method in order to derive a reliable hydrolysis half-life.
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