Diazolidinyl Urea
⚠ EU RestrictedIdentification
CAS Number 78491-02-8
EINECS / EC 278-928-2
CosIng Ref 31356
Chemical Name N-(Hydroxymethyl)-N-(dihydroxymethyl-1,3-dioxo-2,5-imidazolidinyl-4)-N'-(hydroxymethyl)urea
Formula C8H14N4O7
Mol. Weight 278.22 g/mol
Function & Classification
Primary Function Preservative
Origin Synthetic
Category Preservatives
EU Regulatory Status
Max Leave-on 0.5%
Max Rinse-off 0.5%
Restrictions 0.5%
Conditions of Use Max 0.5% formaldehyde equivalent. Counted toward total formaldehyde limit.
Mandatory Warning Contains Diazolidinyl Urea. Releases formaldehyde.
SCCS Opinion View SCCS opinion →
Safety Profile
2 / 10
Known Contact Sensitizer Known to cause allergic contact dermatitis with repeated use or high concentrations.
No toxicology data available yet for this ingredient.
Check SCCS opinions or CIR reports for published safety assessments.
NOAEL · Dermal Absorption % · Sensitization
Formulation Guidelines
Usage level, pH range, solubility and addition phase not yet available.
Usage Level % · Addition Phase · Solubility
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