| Formula / Notation | C6H6O2 |
|---|---|
| CAS Number | 123-31-9 |
| Molecular Weight | 110.11 |
| Melting Point | 338 to 340 °F (EPA, 1998) |
| Boiling Point | 545 to 549 °F at 760 mmHg (EPA, 1998) |
| Density | 1.332 at 59 °F (EPA, 1998) - Denser than water; will sink |
| Solubility | 10 to 50 mg/mL at 68 °F (NTP, 1992) |
| Appearance | Hydroquinone appears as light colored crystals or solutions. May irritate the skin, eyes and mucous membranes. Mildly toxic by ingestion or skin absorption. |
| Also Known As | benzene-1,4-diol; 123-31-9; Benzene-1,4-diol; 1,4-benzenediol; Quinol; 1,4-Dihydroxybenzene; p-Hydroquinone; p-Hydroxyphenol; p-Benzenediol; p-Dihydroxybenzene |
| Category | Organic Compounds |
What is Hydroquinone?
Hydroquinone is a benzenediol comprising benzene core carrying two hydroxy substituents para to each other. It has a role as an antioxidant, a cofactor, a carcinogenic agent, a mouse metabolite, a human xenobiotic metabolite, an Escherichia coli metabolite and a skin lightening agent. It is a benzenediol and a member of hydroquinones.
Formula & Notation
IUPAC Name: benzene-1,4-diol
Other Names / Synonyms: benzene-1,4-diol; 123-31-9; Benzene-1,4-diol; 1,4-benzenediol; Quinol; 1,4-Dihydroxybenzene; p-Hydroquinone; p-Hydroxyphenol; p-Benzenediol; p-Dihydroxybenzene
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 338 to 340 °F (EPA, 1998) |
| Boiling Point | 545 to 549 °F at 760 mmHg (EPA, 1998) |
| Density | 1.332 at 59 °F (EPA, 1998) - Denser than water; will sink |
| Molecular Weight | 110.11 |
| Solubility | 10 to 50 mg/mL at 68 °F (NTP, 1992) |
| Appearance | Hydroquinone appears as light colored crystals or solutions. May irritate the skin, eyes and mucous membranes. Mildly toxic by ingestion or skin absorption. |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Hydroquinone is a benzenediol comprising benzene core carrying two hydroxy substituents para to each other. It has a role as an antioxidant, a cofactor, a carcinogenic agent, a mouse metabolite, a human xenobiotic metabolite, an Escherichia coli metabolite and a skin lightening agent. It is a benzenediol and a member of hydroquinones.
Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.
Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.
The formula or notation for Hydroquinone is: C6H6O2