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Ingredients

Ingredient Dictionary

CI 12150

Molecular structure

Definition

US FDA substance register · UNII J95C286WK5 · registered name SOLVENT RED 1 · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Adds colourCOLORANTDyes hairHAIR DYEING

Safety & regulatory references

Banned
Argentina · ASEAN · Brazil · 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)

EU Cosmetics Regulation, Annex II (prohibited substances), entry 1231

Source: EU prohibited substances (Annex II)

Restriction II/1231

Source: EU CosIng ingredient list

Restriction II/1231 · Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

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

Names & identifiers

CI 12150INCI2-Naphthalenol, 1-[(2-methoxyphenyl)azo]-SynonymSOLVENT RED 1Synonym
CAS No.chemical registry number
1229-55-6
EC No.EU chemical inventory number
214-968-9
DTXSIDUS EPA chemical ID
DTXSID3061635
DTXCIDUS EPA compound ID
DTXCID7033783
IUPAC
1-[(2-Methoxyphenyl)diazenyl]naphthalen-2-ol
Molecular formula
C17H14N2O2
Molecular weight
278.311 g/mol

Measured properties

Melting/freezing point
183 ℃
Vapour pressure
0.00000000629 ㎜Hg (at 25degreeC)
Water solubility
0.00033 ㎎/ℓ (at 25degreeC)
n-Octanol/water partition coefficient (Kow)
7.5
Molecular weight
278.3

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: KOSHA safety data sheets (Korea)

What products actually use it for

What the 2 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.

  • Dye2

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

5 skin studies and 1 eye studies are on record.

Classed as highly irritating3Classed as low2

The study conclusions largely agree (60%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 6 studies
  • High Frequency of Sensitization
    skin sensitisation: in vivo (non-LLNA) · Screening · according to other guideline: As mentioned below.
  • High Frequency of Sensitization
    skin sensitisation: in vivo (non-LLNA) · Screening · according to other guideline: As mention below
  • High Frequency of Sensitization
    skin sensitisation: in vivo (LLNA) · Screening · according to OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
  • Studies Indicate No Significant Irritation
    skin irritation: in vivo · Screening · other guideline: Federal Register 38 No 187 s 1500 .41 (skin) according to
  • Studies Indicate No Significant Irritation
    skin irritation: in vivo · Screening · other guideline: as mentioned below according to
  • Severe Irritation
    eye irritation: in vivo · Screening · other guideline: as mentioned below according to

Source: US EPA CompTox dashboard

Linked databases 19