These are compounds that absorb or adsorb water vapour from air. Some may absorb so much water they actually dissolve in the water they have absorbed and one is left with a solution. Instant coffee granules will do this, left for a few hours, they turn from powder to a gooey puddle. The hygroscopic properties of silica gel are commonly used to keep some foods, drugs and electronic equipment dry by including little sachets of the silica in the packaging of these products. Often, a small amount of cobalt II chloride is added to the silica pellets giving them the added ability to change colour depending upon how much water they have absorbed. When completely dry, the pellets are a strong blue colour and when they have absorbed water they turn a pale pink. Pale pink silica pellets may be returned to blue ones by heating in an oven, thus rendering them capable of re-use.
Hygroscopic compounds absorb water when it comes in contact with the source. These types of compounds are often used in antiperspirants.
Compounds that have an affinity for water are known as hygroscopic. If the affinity is strong enough to attract water until the compound goes into solution, they are called deliquescent.
Acetone is not known as hygroscopic.
Because they are highly hygroscopic compounds and absorb moisture from air.
Hygroscopic substances include cellulose fiber such as ethanol, methanol and diesel fuel. As hydrogen bonding causes pure ethanol to readily absorbs water from the air, ethanol is considered to be hygroscopic.
In crystalline form it's non-hygroscopic, or has only slight hygroscopicity. In powder form it is, yes.
those compounds which have ability to absorb water from its surroundings are known as hygroscopic compounds
Compounds that have an affinity for water are known as hygroscopic. If the affinity is strong enough to attract water until the compound goes into solution, they are called deliquescent.
Hygroscopic.
hygroscopic compounds, polyacrylamide, sodium acrylate, etc.
These compounds are hygroscopic and are called dessicants.
Non-Hygroscopic
Acetone is not known as hygroscopic.
Because they are highly hygroscopic compounds and absorb moisture from air.
The hair of the tail of horse is hygroscopic material.
Polyol Ester is also hygroscopic
An unknown being weighed is hygroscopic.
Hygroscopic substances are used to absorb humidity.