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Ingredients

Ingredient Dictionary

HC RED NO. 3

HC Red No. 3 is a C-nitro compound.

Molecular structure

Definition

HC Red No. 3 is a C-nitro compound.

Source: PubChem

US FDA substance register · UNII 51CPX7M1SQ · registered name HC RED NO. 3 · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Dyes hairHAIR DYEING

Safety & regulatory references

Restricted
Taiwan · United Kingdom

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

ASEAN

  • Field of application and/or use : (a) Hair dye substance in oxidative hair dye products (b) Hair dye substance in non-oxidative hair dye products Use for dyeing eyelashes and eyebrows is not permitted.
  • Maximum authorised concentration in the finished cosmetic product : (b) 3.0 %
  • Other limitations and requirements : (a) After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 0.45 % For (a) and (b): — Do not use with nitrosating agents — Maximum nitrosamine content: 50 μg/kg(21) — Keep in nitrite-free containers The direction for use “wear suitable gloves” must be included in label or leaflet text.
  • Conditions of use and warning which must be printed on the labels : For a) To be printed on the label: The mixing ratio For a) and b) Hair colorants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary “black henna” tattoos may increase your risk of allergy. Do not colour your hair if: • you have a rash on your face or sensitive, irritated and damaged scalp, • you have ever experienced any reaction after colouring your hair, • you have experienced a reaction to a temporary “black henna” tattoo in the past Do not use to dye eyelashes or eyebrows

China

  • Maximum concentration : 0.5%

European Union

  • Product Type, body parts : a) Hair dye substance in oxidative hair dye products (b) Hair dye substance in non-oxidative hair dye products
  • Maximum concentration in ready for use preparation : (b) 3,0%
  • Other : (a) After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 0,45 % For (a) and (b): — Do not use with nitrosating agents — Maximum nitrosamine content: 50 μg/kg — Keep in nitrite-free containers
  • Wording of conditions of use and warnings : For (a): To be printed on the label: The mixing ratio. For (a) and (b): “ Hair colorants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary ‘black henna’ tattoos may increase your risk of allergy. Do not colour your hair if: — you have a rash on your face or sensitive, irritated and damaged scalp, — you have ever experienced any reaction after colouring your hair, — you have experienced a reaction to a temporary ‘black

Source: MFDS (Korea) cosmetic regulatory information

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

Source: Korea toxic substances GHS register (NIER)

EU Cosmetics Regulation, Annex III (restricted substances), entry 266 · maximum concentration (b) 3,0% · applies to a) Hair dye substance in oxidative hair dye products (b) Hair dye substance in non-oxidative hair dye products

Source: EU restricted substances (Annex III)

Other restriction: ban substances that deplete the ozone layer · SCCS opinion: Opinion on HC Red no 3

Source: EU CosIng ingredient list

Reviewed by CIR: Annual Review of Cosmetic Ingredient Safety Assessments: 2007-2010

Source: US Cosmetic Ingredient Review (CIR)

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

Official labels & definitions

JCIA labelling name HC赤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

HC RED NO. 3INCI에치씨적색3호Korean label name (MFDS standard)Ethanol, 2-[(4-amino-2-nitrophenyl)amino]-SynonymEthanol, 2-((4-amino-2-nitrophenyl)amino)-SynonymETHANOL, 2-((4- AMINO-2-NITROPHENYL)AMINO)-SynonymHC RED NO.3SynonymHC赤3Japanese labelling name
CAS No.chemical registry number
2871-01-4
EC No.EU chemical inventory number
220-701-7
DTXSIDUS EPA chemical ID
DTXSID2021236
DTXCIDUS EPA compound ID
DTXCID801236
IUPAC
2-(4-Amino-2-nitroanilino)ethan-1-ol
Molecular formula
C8H11N3O3
Molecular weight
197.194 g/mol

Measured properties

Appearance
Hc red 3 appears as fine dark maroon crystals or dark brown powder. (NTP, 1992) · Dark maroon or dark brown solid, [CAMEO]
Melting point
260 to 262 °F (NTP, 1992)
Solubility
less than 0.1 mg/mL at 64 °F (NTP, 1992)
pH
10.12 (pkb)
Melting/freezing point
135~137 ℃
Vapour pressure
(7.2E-008mmHg 25℃(est.))
Water solubility
0.104 g/㎖ (25℃(est.))
n-Octanol/water partition coefficient (Kow)
-0.42 (est.)
Molecular weight
197.20

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

4 skin studies and 1 eye studies are on record.

Classed as highly irritating1

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 5 studies
  • High Frequency of Sensitization
    skin sensitisation: in vivo (non-LLNA) · Screening · according to OECD Guideline 406 (Skin Sensitisation) according to OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
  • Ambiguous
    skin sensitisation: in vivo (non-LLNA) · Screening · equivalent or similar to OECD Guideline 406 (Skin Sensitisation) Buelher test
  • Ambiguous
    skin sensitisation: in vivo (LLNA) · Screening · equivalent or similar to OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
  • SkinSens1
    Skin Sensitization · QSAR Predicted
  • Studies Indicate No Significant Irritation
    eye irritation: in vitro / ex vivo · Screening · other guideline: OECD Guideline 438 (Isolated Chicken Eye Test Method for Identifying i) Chemicals Inducing Serious Eye Damage and ii) Chemicals Not Requiring Classification for Eye Irritation or Serious Eye Damage) according to

Source: US EPA CompTox dashboard

Related literature

Linked databases 26