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EC number: 200-609-3 | CAS number: 65-45-2
a=12.901(2)Å , b=4.982(1)Å, c=20.987(3)Å, B=91.50(2)°, Z=8
Space group: I2/a, 2θ(max)=70°, measured reflections=6167, unique reflections=2970, R=5.6%, wR=4.8%
1.33±4g/cm3, 25°C, pycnometery, Gloria 19631.351g/cm3, 25°C, crystallography, Pertlik 19901.37g/cm3, 23°C, air pycnometery, Lerk 19771.32g/cm3, flotation and pycnometery, McCrone 19531.308g/cm3, crystallography, McCrone 1953
Several density measurements were available from the published literature. Although none of the published densities were measured according to guidelines, there was good agreement between all reported values, using different techniques and performed by independant laboratories, on independant samples. As a result, the average of the values (n=5) was selected for risk assessment purposes. Considering the good agreement between independent results, based on the weight-of-evidence the available data is considered to be reliable and adequate for classification and labelling, and risk assessment purposes in accordance with Regulation (EC) No. 1907/2006, Annex XI, 1.2.
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