Definition
US FDA substance register · UNII 19O4J76TTK · registered name Diamylhydroquinone · single chemical substance
Cosmetic roles
Safety & regulatory references
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
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
- 79-74-3
- EC No.EU chemical inventory number
- 201-222-2
- DTXSIDUS EPA chemical ID
- DTXSID5044992
- DTXCIDUS EPA compound ID
- DTXCID3024992
- IUPAC
- 2,5-Bis(2-methylbutan-2-yl)benzene-1,4-diol
- Molecular formula
- C16H26O2
- Molecular weight
- 250.382 g/mol
Measured properties
- Appearance
- Dry Powder · Beige solid, [HSDB]
- Melting point
- 179.4-180.4 °C
- Solubility
- SLIGHTLY SOL IN WATER, SOL IN ALCOHOL & BENZENE
- Density
- 1.05 @ 25 °C
- Molecular weight
- 250.4
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 13 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.
- Antioxidant11
- Heat stabilizer1
- UV stabilizer1
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
3 skin studies and 1 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
- Classification not possible
Skin Irritation · Screening - SkinIrr2
Skin Irritation · QSAR Predicted - Classification not possible
Skin Sensitization · Screening - Classification not possible
Eye Irritation · Screening
Source: US EPA CompTox dashboard
Linked databases 15
- Australian Industrial Chemicals Inventory (AICIS)
- ChEMBL
- EU CosIng ingredient list 2
- Korea Cosmetic Association ingredient dictionary
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic ingredient register 2
- NIST Chemistry WebBook
- PubChem
- 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