Type: Toxin
Name: Hydroquinone (Tocopheryl Acetate) C6H4(OH)2
RDA: 0
Importance- to Body:
Toxin: Respiratory, Skin
Distribution- in Body:
Skin, Respiratory System, Area Applied
Excess Effects:
Skin Cancer
Deficiency Effects:
None Listed
Food Sources:
Blueberries, Pears, Beans, Broccoli, Onions, Tea, Red Wine, Wheat Cereals, Coffee
Environmental/Geographic Sources:
Spot Treatments, Anti-Aging Products, Skin Lighteners, Hair Conditioners, Finger Nail Products, Facial Moisturizers, Facial Cleansers
Supplemental information:
‘Artificial’ Skin Lightener that Decreases the Production of Melanin (used to lighten age spots, acne spots, hyperpigmentation, melasma)
Works Cited:
“The Truth About Hydroquinone by MedicineNet.com.” MedicineNet,
www.medicinenet.com/fda_proposes_hydroquinone_ban/views.htm.
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| Names | |
|---|---|
| Preferred IUPAC name
Benzene-1,4-diol | |
| Other names
Hydroquinone
Idrochinone Quinol 1,4-Dihydroxybenzene 1,4-Hydroxy benzene | |
| Identifiers | |
3D model (JSmol)
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| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.004.199 |
| KEGG | |
| RTECS number | MX3500000 |
| UNII | |
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| Properties | |
| C6H6O2 | |
| Molar mass | 110.11 g·mol−1 |
| Appearance | white solid |
| Density | 1.3 g cm−3, solid |
| Melting point | 172 °C (342 °F; 445 K) |
| Boiling point | 287 °C (549 °F; 560 K) |
| 5.9 g/100 mL (15 °C) | |
| Vapor pressure | 0.00001 mmHg (20°C) |
| -64.63·10−6 cm3/mol | |
| Structure | |
| 1.4±0.1 D | |
| Pharmacology | |
| D11AX11 (WHO) | |
| Hazards | |
EU classification (DSD) (outdated)
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Harmful (Xn) Carc. Cat. 3 Muta. Cat. 3 Dangerous for the environment (N) |
| R-phrases (outdated) | R22 R40 R41 R43 R50 R68 |
| S-phrases (outdated) | (S2) S26 S36/37/39 S61 |
| NFPA 704 | |
| Flash point | 165 °C (329 °F; 438 K) |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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490 mg/kg (mammal, oral) 245 mg/kg (mouse, oral) 200 mg/kg (rabbit, oral) 320 mg/kg (rat, oral) 550 mg/kg (guinea pig, oral) 200 mg/kg (dog, oral) 70 mg/kg (cat, oral) |
| US health exposure limits (NIOSH): | |
PEL (Permissible)
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TWA 2 mg/m3 |
REL (Recommended)
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C 2 mg/m3 [15-minute] |
IDLH (Immediate danger)
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50 mg/m3 |
| Related compounds | |
Related benzenediols
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Pyrocatechol Resorcinol |
Related compounds
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1,4-benzoquinone |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
 verify (what is   ?)
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| Infobox references | |
Hydroquinone, also known as benzene-1,4-diol or quinol, is an aromatic organic compound that is a type of phenol, a derivative of benzene, having the chemical formula C6H4(OH)2. It has two hydroxyl groups bonded to a benzene ring in a para position. It is a white granular solid. Substituted derivatives of this parent compound are also referred to as hydroquinones. The name "hydroquinone" was coined by Friedrich Wöhler in 1843.