2,3-Diamino-6,7- dihydro-1H,5H- pyrazolo[1,2-a] Pyrazol-1-one dimethanesulfonate
⚠ EU RestrictedIdentification
CAS Number 857035-95-1
EINECS / EC 469-500-8
CosIng Ref 91100
Chemical Name 6,7-diamino-2,3-dihydro-1H-pyrazolo[1,2-a]pyrazol-5-one;methanesulfonic acid
IUPAC Name —
Formula C8H18N4O7S2
Mol. Weight 346.4 g/mol
InChIKey PFGOOGAEVIKREH-UHFFFAOYSA-N
Function & Classification
Primary Function COLORANT
EU Regulatory Status
Conditions of Use To be printed on the label: The mixing ratio. “ Hair colorants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary ‘black henna’ tattoos may increase your risk of allergy. Do not colour your hair if: — you have a rash on your face or sensitive, irritated and damaged scalp, — you have ever experienced any reaction after colouring your hair, — you have experienced a reaction to a temporary ‘black henna’ tattoo in the past.”
Safety Profile
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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