"http://wiki.answers.com/Q/What_is_the_difference_between_hydroscopic_and_hygroscopic" That's easy. Hydroscopic is not a word. The true term is "hygroscopic" and it refers to a material or solution that readily uptakes moisture from the atmosphere. FYI...a hydroscope is a sort of microscope used to look into deep water. I guess "hydroscopic" could be used to refer to the way in which an image was obtained via the hydroscope. So it probably really is a word.
if by salt you mean Sodium Chloride (NaCl) Yes it is
Non-Hygroscopic
Acetone is not known as hygroscopic.
The hair of the tail of horse is hygroscopic material.
Polyol Ester is also hygroscopic
Hygroscopic substances are used to absorb humidity.
An unknown being weighed is hygroscopic.
hydrophilic b/c carbohydrates are made of sugars; sugars (such as glucose) have LOTS of hydroxyl groups which are hydrophilic, therefore carbohydrates are hydrophilic
Potassium hydroxide is hygroscopic and deliquescent.
It is hydrophilic
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...