- Korean limit
- 0.5%
Definition
US FDA substance register · UNII P25HC23VH6 · registered name 1,5-NAPHTHALENEDIOL · single chemical substance
1,5-Naphthalenediol is the bicyclic phenol that conforms to the formula
Cosmetic roles
Safety & regulatory references
- Restricted
- South Korea · 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
- Maximum authorised concentration in the finished cosmetic product : (b) 1.0 %
- Other limitations and requirements : (a) After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 1.0 % (a) and (b): 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 : (a) The mixing ratio must be printed on the label. 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 (a) & (b) Do not use to dye eyelashes or eyebrows
China
- Maximum concentration : 0.5%
- Maximum concentration : 1%
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) 1.0%
- Other : a) After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 1.0%
- Wording of conditions of use and warnings : Hair colourants can cause severe allergic reactions Read and follow instrctions
Source: MFDS (Korea) cosmetic regulatory information
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
EU Cosmetics Regulation, Annex III (restricted substances), entry 238 · maximum concentration b) 1.0% · applies to a) Hair dye substance in oxidative hair dye products b) Hair dye substance in non-oxidative hair dye products
Restriction III/238 · Other restriction: ban substances that deplete the ozone layer
Source: EU CosIng ingredient list
More data — names, identifiers, properties, test records, literature
Names & identifiers
- CAS No.chemical registry number
- 83-56-7
- EC No.EU chemical inventory number
- 201-487-4
- DTXSIDUS EPA chemical ID
- DTXSID2052574
- DTXCIDUS EPA compound ID
- DTXCID9031147
- IUPAC
- Naphthalene-1,5-diol
- Molecular formula
- C10H8O2
- Molecular weight
- 160.172 g/mol
Measured properties
- Appearance
- Orange powder, [ICSC] · ORANGE POWDER.
- Solubility
- Solubility in water, g/100ml at 20 °C: 0.06
- Melting/freezing point
- 250 ℃
- Flash point
- 252 ℃(c.c.(calc.))
- Vapour pressure
- 0.00000715 ㎜Hg (at 25℃(est.))
- Water solubility
- 6 g/ℓ (at 20℃)
- n-Octanol/water partition coefficient (Kow)
- 1.82
- Auto-ignition temperature
- (&, gt, 250℃)
- Molecular weight
- 160.2
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 1 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.
- Dye1
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
2 skin studies and 2 eye studies are on record.
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 4 studies
- SkinSens1
Skin Sensitization · QSAR Predicted - Moderate or Mild Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to - Severe Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to - Category 6.4A (Category 2A)
Eye Irritation · Read Across
Source: US EPA CompTox dashboard
Related literature
Linked databases 26
- ASEAN Cosmetic Directive
- Australian Industrial Chemicals Inventory (AICIS)
- ChEMBL
- China inventory of existing ingredients (IECIC)
- EU CosIng ingredient list 2
- EU Cosmetics Regulation
- EU restricted substances (Annex III)
- EU SCCS safety opinions
- Korea Cosmetic Association ingredient dictionary
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic ingredient register 2
- MFDS (Korea) cosmetic regulatory information 2 3 4
- NIST Chemistry WebBook
- PubChem
- Taiwan FDA cosmetic ingredients
- Taiwan FDA cosmetic regulations
- Tlooto literature search
- UK cosmetics regulations (OPSS)
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata
- Wikipedia · Korean · English · Japanese · Chinese