Xanthan Gum:
Cream-colored powder. Its solutions in water are neutral to litmus. Soluble in hot or cold water.
NF category: Suspending and/or viscosity-increasing agent.
Xenon Xe 127:
Clear, colorless gas.
Xenon Xe 133 Injection:
Clear, colorless solution.
Xylazine:
Colorless to white crystals. Sparingly soluble in dilute acid, in acetone, and in chloroform; insoluble in dilute alkali.
Xylazine Hydrochloride:
Colorless to white crystals. Sparingly soluble in dilute acid, in acetone, and in methanol; insoluble in dilute alkali.
Xylitol:
White crystals or crystalline powder. It has a sweet taste and produces a cooling sensation in the mouth. One g dissolves in about 0.65 mL of water. Sparingly soluble in alcohol. Crystalline xylitol has a melting range between 92
and 96
.
Xylometazoline Hydrochloride:
White to off-white, odorless, crystalline powder. Melts above 300
, with decomposition. Soluble in water; freely soluble in alcohol; sparingly soluble in chloroform; practically insoluble in benzene and in ether.
Xylose:
Colorless needles or white, crystalline powder. Is odorless, and has a slightly sweet taste. Very soluble in water; slightly soluble in alcohol.