Diazolidinyl Urea (commonly known under trade names such as Germall® II) is a white, free-flowing, water-soluble powder used as an antimicrobial preservative in cosmetics and personal care products. It functions by slowly releasing formaldehyde, which disrupts microbial DNA and protein synthesis. Diazolidinyl Urea is effective at low concentrations and provides long-lasting protection against Gram-positive and Gram-negative bacteria, fungi, and yeasts. It is typically used in conjunction with other preservatives like parabens or IPBC for enhanced performance. Its broad compatibility and established safety profile make it ideal for a wide range of formulations.
Broad-Spectrum Activity – Effective against bacteria, fungi, and yeasts
Stable in Aqueous Formulations – Performs consistently in water-based products
Wide pH Range Compatibility – Suitable for pH 3.0 to 9.0
Low Usage Requirement – Effective at concentrations of 0.2% to 0.6%
Highly Compatible – Works well with other preservatives and ingredients
Ease of Use – Water-soluble powder that integrates smoothly into formulations
Personal Care Products – Preserves lotions, creams, gels, shampoos, and conditioners
Cosmetics & Makeup – Used in foundations, mascaras, and makeup removers
Pharmaceutical & Topical Products – Ensures sterility in creams and ointments
Household Products – Protects liquid detergents, fabric softeners, and cleaners
Industrial Emulsions – Used in lubricants, surfactants, and polymer dispersions
Baby Care & Sensitive Skin Formulas – Applied in low concentrations under regulatory limits
| Property | Details |
|---|---|
| Product Name | Diazolidinyl Urea |
| Chemical Name | N,N”-Methylenebis(N’-[1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl]urea) |
| Chemical Type | Formaldehyde-releasing antimicrobial preservative |
| Active Ingredient | Diazolidinyl Urea (≥98%) |
| Physical Form | Fine white powder |
| Appearance | Odorless white crystalline powder |
| Odor | Odorless or very faint odor |
| pH (1% Solution) | ~6.0 – 7.5 |
| Solubility | Freely soluble in water |
| Density | ~0.6 – 0.8 g/cm³ (bulk powder) |
| Flash Point | Not applicable (non-flammable) |
| Recommended Use Level | 0.2% – 0.6% depending on product type |
| pH Stability Range | 3.0 – 9.0 |
| Shelf Life | 24 months in sealed packaging |
| Packaging Options | 1 kg, 5 kg, 25 kg HDPE drums or fiber cartons |
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