Registration Dossier
Registration Dossier
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EC number: 948-040-6 | CAS number: -
Endpoint summary
Administrative data
Description of key information
All relevant physical-chemical parameters required for this annex have been studied and endpoints or appropriate waivers in accordance with Column 2 in REACH are available for each. Where relevant and possible a value per constituent is presented.
The substance is a light yellow transparent liquid with a melting point of < -100 °C (EU method A.1) and a boiling point of 221.8 °C (EU method A.2). The relative density was 0.8117 (EU method A.3).
Vapour pressure was estimated to be 0.09 hPa (EU method A.4).
Partition coefficient was estimated using valid, in domain, high-accuracy QSARs N,N,N',N'-tetrabutylmethylenediamine (constituent 1) had a log Kow value of 5.7. N-butylbutan-1-amine (constituent 2) had a log Kow value of 2.8. The water solubility (OECD 105; Letinski et al., 2002 modification) was determined to be 2,917 mg/L and 156 mg/L for constituent 1 and 2 respectively. No critical micelles were formed below the water solubility and did not impact result interpretation, nor was the critical micelle concentration (CMC) considered to be of value in further assessments (no CMC was determinable) such as input values for exposure modelling as water solubility was considered most relevant. Based on the result the conduct of water solubility testing was most relevant for this substance.
Surface tension (EU method A.5) was determined to be 57.2 mN/m. It was considered that dibutylamine may be driving the surface activity but the substance as a whole was borderline and considered not surface active as this is not a desired property. During an OECD 115, dibutylamine was tested to derive a CMC, however, not CMC was found at or below 3.8 g/L, the noted water solubility on the ECHA dissemination page for dibutylamine. Therefore, no CMC was noted below the water solubility for this substance.
Flash point (EU method A.9) and auto-ignition (EU method A.15) were 104 °C and 215 °C, respectively. The substance was considered not flammable (EU method A.13). The substance was also considered to not have explosive or oxidising properties.
Additional information
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