Allantoin

Allantoin
Chemical name (2,5-Dioxo-4-imidazolidinyl) urea
General
Chemical formula	C4H6N4O3
Molecular weight	158.1164 g/mol
Appearance	?
CAS number	97-59-6
MSDS	Allantoin MSDS
SMILES	O=C1C(NC(=O)N1)NC(=O)N
Other names
?
Physical properties
Density and phase at STP	? g/cm3 (?)
Solubility	? in ?
Specific gravity	?
Crystal structure	?
pH (10% solution with water)	?
Acidity constant (pKa)	?
Thermal decomposition	? °C (? K)
Phase behavior
Melting point	239 °C
Boiling point	? °C (? K)
Triple point	? K (? °C)  ? bar
Critical point	? K (? °C)  ? bar
Heat of fusion (ΔfusH)	? kJ/mol
Entropy of fusion (ΔfusS)	? J/mol·K
Heat of vaporization (ΔvapH)	? kJ/mol

Allantoin is a botanical extract of the comfrey plant and is used for its healing, soothing, and anti-irritating properties. Allantoin helps to heal wounds and skin irritations and stimulate growth of healthy tissue. This extract can be found in anti-acne products, sun care products, and clarifying lotions because of its ability to help heal minor wounds and promote healthy skin.

Its chemical formula is C₄H₆N₄O₃.

Synonyms

• udder cream
• ureidohydantoin
• glyoxyldiureide
• hemocane
• (2,5-dioxo-4-imidazolidinyl)-urea
• 5-ureidohydantoin