Product name : Imidazolidinyl Urea

Other names : Imidurea, Germall 115; N',N''-methylenebis[3-[1-(hydroxymethyl)- 2,5-dioxoimidazolidin-4-yl]urea];1-[1-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl]- 3-[[[1-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl] carbamoylamino]methyl]urea

CAS # : 39236-46-9

Items                               Properties

Molecular formula        C₁₁H₁₆N₈O₈
Molar mass                   388.29 g/mol 
Appearance                   white hygroscopic powder , free-flowing
Assay                              95.0 %
PH                                    6.0 - 7.5 (1% Sol.)
Solubility in water          Very soluble
Color,APHA                    20max (30% Sol.)
Turbidity                          6 NTU max (30% Sol.)
Heavy metals                 10 ppm max
Nitrogen                          26.0 - 28.0%  
Loss on drying              3.0% max

Characteristics and Application :

Imidazolidinyl urea is an antimicrobial preservative used in cosmetics. It is chemically related to diazolidinyl urea which is used in the same way. Imidazolidinyl urea acts as a formaldehyde releaser.

Imidazolidinyl urea kills Gram-negative bacteria. It acts synergistically with the parabens to provide a broad-spectrum antibiotic effective against molds, yeast, and bacteria.The combination of the two is the most widely used preservative in cosmetics.

Use :

Imidazolidinyl Urea is used as an antimicrobial agent and preservative in cosmetics and toiletries. It is very active against gram+ and gram- bacteria as a synergist in combination with parabens. The most widely used biocides ( antiseptic agents, preservatives, bactericides, slimicides, fungicides) in cosmetics are parabens, isothiazolones, formaldehyde and formaldehyde releasing substances.

Safety :

Some people have a contact allergy to imidazolidinyl urea causing dermatitis[1]. Such people are often also allergic to diazolidinyl urea.