Hydroquinone/CAS:123-31-9
Short Description:
Product Name: Hydroquinone
CAS:123-31-9
MF: C6H6O2
MW: 110.11
STRUCTURE:
Hydroquinone (HQ) is produced by the oxidation of aniline or phenol, by the reduction of quinone, or from a reaction of acetylene and carbon monoxide. Hydroquinone occurs naturally as a glucose ether, also known as arbutin, in the leaves of many plants and in fruits, as well as one of the agents used in the defense mechanism of the bombardier beetle, family Carabidae.
specification
| Item | Specification |
| Melting point | 172-175 °C(lit.) |
| Boiling point | 285 °C(lit.) |
| Density | 1.32 |
| Bulk density | 600kg/m3 |
| Vapor density | 3.81 (vs air) |
| Vapor pressure | 1 mm Hg ( 132 °C) |
| Refractive index | 1.6320 |
| Flash point | 165 °C |
| Storage temp. | Store below +30°C. |
| Solubility | H2O: 50 mg/mL, clear |
| pka | 10.35(at 20℃) |
| Form | Needle-Like Crystals or Crystalline Powder |
| Color | White to off-white |
Usage
Use as photographic reducer and developer; as reagent in the determination of small quantities of phosphate; as antioxidant. Depigmentor
hydroquinone is a pigment-lightening agent used in bleaching creams. Hydroquinone combines with oxygen very rapidly and becomes brown when exposed to air. Although it occurs naturally, the synthetic version is the one commonly used in cosmetics. Application to the skin may cause allergic reaction and increase skin sun sensitivity. Hydroquinone is potentially carcinogenic and is associated with causing ochronosis, a discoloration of the skin. The u.S. FDA has banned hydroquinone from oTC cosmetic formulations, but allows 4 percent in prescription products. Its use in cosmetics is prohibited in some european countries and in Australia.
K channel agonist, antihypertensive
reducing agent prevents polymerization of resin monomers lightens darkened skin, light sensitive
Photographic reducer and developer; antioxidant; stabilizing agent for some polymers; intermediate in the manufacturing of some dyes and pigments; in cosmetic formulations.
Packaging and Shipping
25KG/Bag or as customer requirements.
Belongs to common goods and can deliver by ocean and air
Keep and storage
Shelf life:24 month from date of manufacture in original unopened packaging stored in a cool dry place out of direct sunlight, water.
Ventilated warehouse, Low temperature drying, Separated from oxidants, acids.
