2,6-Dimethyl-p-phenylenediamine HCl

INCI: 2,6-DIMETHYL-P-PHENYLENEDIAMINE HCL

CAS Number
56009-20-2 (dihydrochloride salt form; verify against current EU Annex III entry)
Function
Hair dyeing (salt form of the oxidative hair dye precursor for improved water solubility)
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Coal-tar hair dye exemption applies; same labeling requirements as free base

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
high
Sensitization
high

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Same flags as \#5 above. Additionally: when calculating maximum permitted concentration, convert from salt to free-base equivalent. Hygroscopic - storage conditions affect stability. Verify CAS against your specific regulatory market's Annex III listing

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Concern Level: Moderate

Frequently Asked Questions

Is 2,6-Dimethyl-p-phenylenediamine HCl safe in cosmetics?

Same flags as \#5 above. Additionally: when calculating maximum permitted concentration, convert from salt to free-base equivalent. Hygroscopic - storage conditions affect stability. Verify CAS against your specific regulatory market's Annex III listing The EU classifies 2,6-Dimethyl-p-phenylenediamine HCl as "restricted". Safety rating: MODERATE.

Is 2,6-Dimethyl-p-phenylenediamine HCl allowed in the EU?

2,6-Dimethyl-p-phenylenediamine HCl EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does 2,6-Dimethyl-p-phenylenediamine HCl do in cosmetics?

2,6-Dimethyl-p-phenylenediamine HCl functions as: Hair dyeing (salt form of the oxidative hair dye precursor for improved water solubility). It is classified as a cosmetic ingredient in our database. CAS number: 56009-20-2 (dihydrochloride salt form; verify against current EU Annex III entry).

What is the Margin of Safety for 2,6-Dimethyl-p-phenylenediamine HCl?

not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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