Sherwood model 926 chloride analyser can be used in the analysis for salt in crude oil
Sherwood Model 926 Chloride Analyser can be used in the analysis for Salt in Crude Oil.
The ASTM method D6470-99(2004) for this analyte has recently been updated.
This method extracts the salt by refluxing the oil sample with xylene and then adding acetone or iso-propanol and finally water.
The salt migrates to the aqueous layer.
An aliquot is taken from this layer and then is analysed using a silver nitrate titration.
This is the step where the Model 926 has a number of advantages over the historic silver nitrate method.
The main advantages are:.
Automatic end point determination;.
Reduced cost per test;.
No need to recalibrate silver nitrate solutions;.
Elimination of hazardous and unsightly reagents.
The Sherwood line of flame photometers is suitable for two other ASTM methods.
D 3340-98(2003) - lithium and sodium in lubricating greases.
D1318-00 - sodium in residual fuel oil.
