Chemical sensitization: Reagents shall be incorporated into the paper that will exhibit marked chemical reaction (in the form of various stains) to render detectable attempts to alter the document using various chemicals which are classified according to the following families: Polar solvents
, non-polar solvents
, acids, alkalis and bleach.
It can be supposed that the weight loss exceeding the oil yield in the Fischer Assay could partly be the result of dissolution of the mineral part of the shale in the polar solvents
Consequently, it can be seen that for NR/CR and NR/NBR blends, with its major polar structures, the percentage of change of mass is less when immersed in nonpolar heptane compared with acetone and toluene, which are both polar solvents
BSR: Brilliant Solvent Resistant Series for more polar solvents
such as C & T type gravure as well as screen inks
These results suggest that the PANI prepared by this method is easy to be dispersed and stabilized in water as well as polar solvent
, by forming hydrogen bonds with a small amount of residual EG molecules which have also hydrogen bonding with water or the polar solvents
The results obtained indicated that raspberry and strawberry extracts isolated by polar solvents
due to their high RSC and the phenolics may be considered as promising additives in cheese.
Hydrodispersible or hydrosoluble resins, mostly acrylics or urethanes, are added to water and polar solvents
at approximately 30 percent by weight (Anonymous 2007).
There are many solvents available to the chemist, which possess various properties that allow the removal of the analyte from the matrix; properties to consider are polarity, dipole moment and hydrogen bonding capacity--sugars, for example, are polar and as a result readily dissolve in polar solvents
such as water or alcohols.
Dow Corning 88 additive is a silane/siloxane blend that is effective at improving water resistance both in acrylic emulsion paint containing polar solvents
and in solvent-based systems.
Here, we report that most of the > 500 commercially available plastic products that we sampled--even those that are presumably BPA free--release chemicals having detectable EA, especially if they are assayed by more polar and less polar solvents
and exposed to common-use stresses.
It was shown that additional water causes the decrease of both, overall conversion and the favourable product yield in the case of the reactions in polar solvents
, and the opposite effect was noticed for the processes in non-polar solvents
The polymer can also be dissolved due to its solubility in common polar solvents