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EC number: 201-051-3
CAS number: 77-71-4
An acute eye irritation and dermal irritation study are available
The substance was not classified under criteria defined in Regulation
(EC) 1272/2008, as no irritating effect was observed on application to
The application of the substance to the rabbit eye did not produce any
effect to cornea or iris of the eye. A Conjunctivae effect was
reversible within 7 days, showing an irritation effect of DMH to the eye
with no corrosive effect. All findings were reversible, as the severity
of each reaction decreased over seven days. 5,5-dimethylhydantoin does
not need to be classified for eye irritancy.
The substance was not classified neither for skin irritation nor for eye
irritation under criteria defined in Regulation (EC) 1272/2008, as no
irritating effects were observed on application to rabbit skin and
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