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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Appearance: Organometallic substance in the form of odourless blue powder, by visual inspection.

Melting point: The melting point test was performed, using OECD 102, on the test substance up to 350°C with no melting observed; therefore, the melting point is reported to be >350°C (>623.2 K).

Boiling point: Waived: According to Annex VII, point 7.3,column 2, boiling point is not required for compounds which melt above 300 °C

Density: Density of the test substance, using OECD 109, was 1.65631 ± 0.00100 g/mL at 19.3 °C.

Particle Size Distribution: Particle size distribution testing was performed on the test substance in duplicate using the powder sieve method according to OECD guideline 110 and EPA Method OPPTS 830.7520. The test material was a powder. The average amount of particulate matter either at or larger than 250 microns in the test substance was approximately 1%. Approximately 93% of the test substance had particles residing in the range from 125 to 45 microns. The average amount of particulate matter smaller than 20.0 microns in the test substance was approximately 0.2%. The mean weight percent recovery for the two analyses was 100%.

Vapor Pressure: The mean measured vapor pressure of the test material by the SRG was 3.97E-03 Pa (N = 3, CV = 20%) at 10°C, 1.90E-03 Pa (N = 3, CV = 14%) at 20°C and 2.26E-03 Pa (N = 3, CV = 18%) at 30°C.

Partition coefficient: Under the chromatographic conditions specified, the test substance eluted as three peaks on the ultraviolet (UV) detector. The corresponding Log POW for the test substance was a range from <thiourea to 2.98.

Water solubility: The water solubility of the test substance in reagent water at 20ºC was determined using the shake flask method. The overall mean water solubility for the test substance at 20.0 ± 0.1°C was determined to be 92.9 ± 4.2 mg/L (N = 6; CV = 4.5%).

Surface tension: The surface tension of the test substance, using OECD Guideline method 115, was 73.4 ± 0.3 dynes/cm at 20.0°C.

Flash point: Waiver: The study does not need to be conducted because the flash point is only relevant to liquids and low melting point solids. Since the substance is solid with melting point higher than 300°C, flash point is not necessary to test.

Auto-Flammability: The auto-flammability was determined using EU Guideline Method A.16. The sample followed the oven temperature until 262.9°C where the sample entered an exothermic event, reaching its relative self-ignition temperature at 336.1°C.

Flammability: The flammability of the test substance was determined using EU Guideline Method A.10. The test substance slowly smoldered, with a sulfurous burning smell and a glowing red ~4-mm spot, but did not propagate burning along 200 mm of the powder strip within a four-minute test period. The test substance was therefore not considered highly flammable. The test material was determined to not be highly flammable.

Explosiveness: The explosivity potential of the test substance was determined using EU Guideline Method A.14 and the BAM Fallhammer, BAM friction and Koenen Tube were used for the testing procedures. The test substance was observed to exhibit no reaction at 40 J; the BAM Fallhammer test result is therefore considered Negative. The test substance was observed to exhibit no reaction at 360 N; the BAM Friction test result is therefore considered Negative. The sample did not exhibit an explosion during any of the tests; the Koenen Tube test result is therefore considered Negative.

Oxidizing properties: The oxidising properties study was conducted according to EU Method A.17. A preliminary screening test was performed on the test substance. Since the burning time for the test substance sample was less than the reference substance, barium nitrate, and the vigorousness and flame intensity was significantly greater for barium nitrate, definitive testing was performed. Definitive testing was performed on test substance. A minimum of one sample of test substance was prepared at six test substance to dried cellulose powder ratios (i.e. 10%, 20%, 30%, 40%, 50% and 60% w/w) and each ratio was run at least once. All of the ratios were run an additional five times for a total of six times. The maximum burning rate for each of the sample ratios were plotted versus the respective test substance concentration to determine the overall maximum burn rate. Under the conditions specified, test substance had an overall maximum burning rate of 0.513 mm/s at a ratio of 10% test substance to 90% dried cellulose powder. The overall maximum burning rate of the test substance was significantly less than the maximum burning rate of the known class 1 oxidizer, barium nitrate (0.649 mm/s). Therefore, test substance would not be considered an oxidizer based on the results of this study.

Additional information