3,4-dihydroxybenzaldehyde is a dihydroxybenzaldehyde.
Definition
3,4-dihydroxybenzaldehyde is a dihydroxybenzaldehyde.
Source: PubChem
US FDA substance register · UNII 4PVP2HCH4T · registered name Protocatechualdehyde · single chemical substance
Cosmetic roles
Safety & regulatory references
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
More data — names, identifiers, properties, test records, literature
Official labels & definitions
JCIA labelling name プロトカテチュアルデヒド: 本品は、次の化学式で表される有機化合物である。
Source: JCIA labelling names (Japan)
Names & identifiers
- CAS No.chemical registry number
- 139-85-5
- EC No.EU chemical inventory number
- 205-377-7
- DTXSIDUS EPA chemical ID
- DTXSID4074512
- DTXCIDUS EPA compound ID
- DTXCID1034507
- IUPAC
- 3,4-Dihydroxybenzaldehyde
- Molecular formula
- C7H6O3
- Molecular weight
- 138.122 g/mol
Measured properties
- Appearance
- Solid, [Merck Index] Light brown powder, [Alfa Aesar MSDS]
- Water solubility
- (5%)
- Vapour density
- 4.8 ()
- Decomposition temperature
- 150-155 ℃
- Molecular weight
- 138.12
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 4 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.
- Flavouring and nutrient1
- Bleaching agent1
- Antioxidant1
- Softener and conditioner1
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
- Category 6.3A (Category 2)
Skin Irritation · Read Across - SkinSens1
Skin Sensitization · QSAR Predicted - SkinIrr2
Skin Irritation · QSAR Predicted - Category 6.4A (Category 2A)
Eye Irritation · Read Across
Source: US EPA CompTox dashboard
Linked databases 17
- Australian Industrial Chemicals Inventory (AICIS)
- ChEBI
- EU CosIng ingredient list 2
- JCIA labelling names (Japan)
- 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 2
- 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 · English · Japanese · Chinese