Hydroxypropyl-p-Phenylenediamine HCl

INCI: HYDROXYPROPYL-P-PHENYLENEDIAMINE HCL

CAS Number
1928659-47-5 [^1_23]
Function
Oxidative hair dye (salt form of phenylenediamine)
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
EU Max Conc. 2%
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted under coal tar hair dye exemption (FD&C Act ยง601(a))

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Identical to free base: initial genotoxicity flag resolved; eye irritation concern persists; must carry mandatory labelling (Can cause an allergic reaction. Contains phenylenediamine.); not for leave-on skin products

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Concern Level: Moderate

Frequently Asked Questions

Is Hydroxypropyl-p-Phenylenediamine HCl safe in cosmetics?

Identical to free base: initial genotoxicity flag resolved; eye irritation concern persists; must carry mandatory labelling (Can cause an allergic reaction. Contains phenylenediamine.); not for leave-on skin products The EU classifies Hydroxypropyl-p-Phenylenediamine HCl as "restricted". Safety rating: MODERATE.

Is Hydroxypropyl-p-Phenylenediamine HCl allowed in the EU?

Hydroxypropyl-p-Phenylenediamine HCl EU regulatory status: restricted. Maximum allowed concentration: 2%. This is based on EU Regulation 1223/2009 and its amendments.

What does Hydroxypropyl-p-Phenylenediamine HCl do in cosmetics?

Hydroxypropyl-p-Phenylenediamine HCl functions as: Oxidative hair dye (salt form of phenylenediamine). It is classified as a cosmetic ingredient in our database. CAS number: 1928659-47-5 [^1_23].

What is the Margin of Safety for Hydroxypropyl-p-Phenylenediamine HCl?

adequate 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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