Acid green 22

Acid green 22 in plain language

What it is

On cosmetic ingredient lists it appears as “CI 42170”.

Also known as CI 42170 · C.I. acid green 22 · C.I. acid green 22, sodium salt · Acilan fast green 10G · Alkali fast green 10G · ALKALI GREEN (ci 42170)

Show all 8 names

C.I. 42170 · UNII-C86OTQ9YRV

What it does

Used in cosmetics as a colourant. CI 42170 is classed chemically as a triphenylmethane colour.

• Colorant
• Colourant

Is it a concern?

Minor concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

What the listings say

Permitted, with conditions — Acid green 22 appears on published "allowed" regulatory lists rather than on a restriction list.

Hydrogen [4-[(2-chlorophenyl)[4-[ethyl(3-sulphonatobenzyl)amino]-o-tolyl]methylene]-3-methylcyclohexa-2,5-dien-1-ylidene](ethyl)(3-sulphonatobenzyl)ammonium, sodium salt is listed in Annex IV of the EU Cosmetics Regulation (EC) 1223/2009 (colorants allowed in cosmetic products).

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

• EU Annex IV — permitted colorant
• EU permitted colorant

• EU·CosIng·Active2 entries

  • CI 42170 is classed chemically as a triphenylmethane colour. It conforms to the formula: Restriction: IV/65Source →
  • Cosmetics Regulation annex IV / ref 65.Source →
• EU·EC·allowed_listedAnnex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Maximum concentration: Rinse-off products

  • Annex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Maximum concentration: Rinse-off productsSource →
• US·EPA·commercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Dye.

  • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Dye.Source →
• US·FDA·listed in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.

  • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Acid green 22. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

• SCCS

  EU Scientific Committee on Consumer Safety

  No SCCS opinion on file.

• CIR

  Cosmetic Ingredient Review (US expert panel)

  No CIR safety assessment on file.