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Ingredients

Ingredient Dictionary

ACID ORANGE 3

CI Acid Orange 3 is an organic molecular entity.

Molecular structure

Definition

CI Acid Orange 3 is an organic molecular entity.

Source: PubChem

US FDA substance register · UNII P0XV7XM57J · registered name ACID ORANGE 3 · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Dyes hairHAIR DYEING

Safety & regulatory references

Banned
ASEAN · China · European Union · South Korea · Taiwan · United Kingdom

Source: ASEAN Cosmetic Directive · EU Cosmetics Regulation · MFDS (Korea) cosmetic regulatory information · Taiwan FDA cosmetic ingredients · UK cosmetics regulations (OPSS)

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

Restriction II/1280

Source: EU CosIng ingredient list

Reviewed by CIR: Final Report on the Safety Assessment of Acid Orange 3

Source: US Cosmetic Ingredient Review (CIR)

Reviewed by CIR: Acid Orange 3

Source: US Cosmetic Ingredient Review (CIR)

More data — names, identifiers, properties, test records, literature

Official labels & definitions

JCIA labelling name 酸性橙3: 本品は、次の化学式で表される頭髪用染料である。

Source: JCIA labelling names (Japan)

Names & identifiers

ACID ORANGE 3INCI산성등색3호Korean label name (MFDS standard)Benzenesulfonic acid, 5-[(2,4-dinitrophenyl)amino]-2-(phenylamino)-, monosodium saltSynonym酸性橙3Japanese labelling name
CAS No.chemical registry number
6373-74-6
EC No.EU chemical inventory number
228-921-5
DTXSIDUS EPA chemical ID
DTXSID1021081
DTXCIDUS EPA compound ID
DTXCID901081
IUPAC
Sodium 2-anilino-5-(2,4-dinitroanilino)benzene-1-sulfonate
Molecular formula
C18H13N4NaO7S
Molecular weight
452.37 g/mol

Measured properties

Appearance
C.i. acid orange 3 is a brown to dark brown microcrystalline powder. (NTP, 1992) · Dark orange-brown solid, [HSDB]
Melting point
399 to 403 °F (NTP, 1992)
Solubility
1 to 10 mg/mL at 77 °F (NTP, 1992) · Very soluble in water and ethanol
n-Octanol/water partition coefficient (Kow)
1.09
Molecular weight
452.49

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: PubChem · KOSHA safety data sheets (Korea)

What products actually use it for

What the 3 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

  • Dye3

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

1 skin studies and 0 eye studies are on record.

Classed as moderate1

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 1 studies
  • SkinSens1
    Skin Sensitization · QSAR Predicted

Source: US EPA CompTox dashboard

Related literature

Linked databases 23