Benzylamine

Endpoint summary

Additional information

Appearance/physical state/colour

Benzylamine is a colourless to slightly yellowish liquid with an ammonia-like odour.

Melting/Freezing point

According to regulation (EC) 1907/2006 of the European parliament and the council of 18 December 2006, Annex VII, a study does not need to be performed below -20°C. As it is known from handling and use of the substance and in addition it is stated in peer-reviewed handbook data, that the solidification point of Benzylamine is below -30°C, conduction of a study is considered unjustified.

Boiling point

The boiling point of benzylamine is 185 °C according to the CRC Handbook. This endpoint is supported by other handbook data in which the boiling point is reported to be in the range of 183.62-185°C.

Density

According to the CRC Handbook, the density of benzylamine is 0.9813 g/cm³ at 20 °C. This endpoint is supported by further handbook data and

other sources of information in which the density is reported to be around 0.98 g/cm³at 4°C, 19°C and 20°C.

Particle size distribution

The substance is a liquid and is marketed and used as a liquid only. According to regulation (EC) No. 1907/2006 of the European parliament and the council of 18 December 2006, Annex VII, no standard information on granulometry is required and no study is needed, if the substance is not used or marketed in a solid or granular form.

Vapour pressure

In the report of Currenta (2009) on the emission of benzylamine during production, a literature source in which the vapour pressure of benzylamine was experimentally determined is cited. The results of the measurements on the vapour pressure revealed values of 0.6, 1.3 and 5.2 mbar (or 60, 130 and 520 Pa) at 20°C, 30°C and 50°C, respectively. These values are confirmed by the figures provided in the supporting studies and handbook data.

Partition coefficient

The value for the partition coefficient (log Pow) of benzylamine at 25°C is 1 as determined experimentally in octanol-saturated water in the key study

(BASF AG BRU 89.096).

Water solubility

The water solubility of an aqueous solution of benzylamine was determined according to the pre-test method as described in OECD guideline 105 and the study was defined as key study. Within this investigation, an extended pre-test was performed and results revealed that the test item was fully miscible with water both at 23°C and at 20°C in 5% v/v increments from 5 %v/v to 95 %v/v.

This result is substantiated by published data where it is stated that benzylamine is solube in water with >100 mg/L (MITI, 1992). In addition, the water solubility of benzylamine was estimated from Log Kow (1.09) using Epiwin at 132.8 g/L (25°C) and in handbooks it is stated that benzylamine is miscible with water (Ullmann, 2006; CRC handbook, 2009).

Surface tension

The surface tension of benzylamine was determined according to OECD 105. Results revealed an averaged surface tension of a 1.0 g/L solution of 64.9 mNm ± 0.12 mN/m at 25.1°C and that, therefore, benzylamine in a 1g/L solution produces a small decrease of 7.09 mN/m of the surface tension of water (71.99 mN/m at 25°C).

Flash point

According the information provided by Chemsafe (2008), the flash point of benzylamine is 65°C. This endpoint is supported by other handbook data (Ullmann, 2006).

Auto flammability

The autoignition temperature of benzylamine is 390 °C according to the information provided by Chemsafe (2008). The endpoint is supported by other handbook data (Ullmann, 2006).

Flammability

The flammabilityof Benzylamineupon ignition derived from flash point (and boilling point).

Therefore, under the conditions ofEU Directive 67/548/EEC andEU CLP Benzylamine is non flammable.

The chemical structure of Benzylamine indicates that there are no groups associated with flammability properties upon contact with water. Further experience in handling and use does not indicate flammability properties upon contact with water. The test substance is not considered highly flammable.

The chemical structure of Benzylamine indicates that there are no groups associated with pyrophoric properties. The test substance does not contain any chemical group that might lead to spontaneous ignition shortly after contact with air at room temperature. Therefore, Benzylamine does not belong to the type of substances that exhibit pyrophoric properties as listed in the REACH "Guidance on information requirements and chemical safety assessment", Chapter R.7.

Explosiveness

In accordance with column 2 of REACH Annex VII, the determination of explosiveness (required in section 7.11) does not need to be conducted as there are no chemical groups associated with explosive properties present in benzylamine (refer to REACH Guidance on information requirements and chemical safety assessment, Chapter R.7.1.11.3).

Oxidising properties

A test on oxidising properties (required in section 7.13 of REACH, Annex VII) does not need to be conducted as there are no chemical groups associated with oxidising properties present in benzylamine (refer to REACH Guidance on information requirements and chemical safety assessment, Chapter R.7.1.13.3).

Dissociation constant

The dissociation constant of benzylamine at 20°C is 9.29 and the mean dissociation constant at 25°C is 9.43, as cited in Perrin, 1965, where six values for the dissociation constant of benzylamine are provided (range: 9.29 – 9.46) for temperatures of 20°C, 25°C and 30°C.

Viscosity

The viscosity of benzyl alcohol is cited to be 1.759 mPa*s at 20 °C and 1,253 mPa*s at 40°C according to the Design Institute for Physical

Properties, Sponsored by AIChE (DIPPR Project 801 - Full Version).