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EC number: 695-748-3 | CAS number: 65286-55-7
Determining the Density of the Immersion Liquid
Equation 1 (Calculation for the density of water)
Mass of water / volume of pycnometer = Density of water
Equation 2 (Calculation for the density of immersion liquid)
ρIL = m1/mw x ρw,t Where : m1 is the mass of the immersion liquid; mw is the mass of water; ρw,t is the density of water at temperature t
Calculated value for the density of immersion liquid = 965 kg.m-3 @ 20°C
Determining the Density of the Sample
Equation 3 (Calculation for the density of the sample)
ρS,t = ms ρIL/ (m1 – m2)
Where: ms is the mass, in grams, of the sample;
m1 is the mass, in grams, of immersion liquid required to fill the empty pycnometer;
m2 is the mass, in grams of immersion liquid added to fill the pycnometer containing the sample;
ρIL is the density of the immersion liquid (as determined by equation 2)
The relative density of the substance was determined using the pycnometer method and was found to be 0.908 at 20°C (density: 908 kg/m³) in a test according to OECD guideline 109 and EU Method A.3 without deviations (K1, Dekra, 2017).
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