No.
Non-Hygroscopic
The hair of the tail of horse is hygroscopic material.
Polyol Ester is also hygroscopic
Hygroscopic substances are used to absorb humidity.
Potassium hydroxide is hygroscopic and deliquescent.
As far as I know, the PVC is not hygroscopic, it doesn't absorb the moisture. There are several types of PVC though, so there could be some hygroscopic PVC resin, but I haven't encountered it yet. Normally it is dried by hot air driers, which are not suitable for hygroscopic materials, therefore I assume PVC is not hygroscopic...
Acetone is not known as hygroscopic.
yes.
Sodium chloride has a rare dihydrate, obtained from cold solutions - NaCl.2H2O.
A hygroscopic substance absorbs moisture from the air. If an unknown being is being weighed before and after exposure to air, any increase in weight may suggest it is hygroscopic and has absorbed moisture from the air. Additional testing would be needed to confirm this hypothesis.
Hygroscopic behavior refers to the tendency of a substance to absorb moisture from the air. This can cause the substance to swell, change its form, or become softer. Materials with hygroscopic properties are commonly used in applications such as desiccants, humidity control, and pharmaceuticals.
Silica Gel