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Hydroquinone (CAS 123-31-9) - Chemical & Physical .
Chemical Properties of Hydroquinone (CAS 123-31-9) ΔfH°gas: Enthalpy of formation at standard conditions (kJ/mol). ΔfH°solid: Solid phase enthalpy of formation at standard conditions (kJ/mol). ΔfusH°: Enthalpy of fusion at standard conditions (kJ/mol). ΔfusH: Enthalpy of fusion at a given temperature (kJ/mol). ΔsubH°: Enthalpy of sublimation at standard conditions (kJ/mol).
Hydroquinone - an overview | ScienceDirect Topics
Hydroquinone is a chemical compound used for decades as a skin lightening agent, banned initially from cosmetics due to mid-term effects such as leucoderma/vitiligo or exogenous ochronosis.
HYDROQUINONE | CAMEO Chemicals | NOAA
HYDROQUINONE is a slight explosion hazard when exposed to heat. Incompatible with strong oxidizing agents. Also incompatible with bases. It reacts with oxygen and sodium hydroxide. Reacts with ferric salts (NTP, 1992). Hot and/or concentrated NaOH can cause hydroquinone to decompose exothermically at elevated temperature. (NFPA Pub. 491M, 1975, 385)
TRIPLE COMBINATION OF HYDROQUINONE, TRETINOIN AND .
We studied triple combination of 4% hydroquinone, 0.05% Tretinoin and 0.1% mometasone furoate cream with glycolic acid peels, in the treatment of melasma. Ten patients with melasma on the face (two males and eight females), in the age group of 21-50 (mean age 27), with duration ranging from three months to seven years, were included in the study.
Why hydroquinone, the skin bleaching chemical, is highly toxic
Mar 23, 2013· Hydroquinone is a carcinogen The chemical has been identified as both a potential clastogen and mutagen. A clastogen is a toxin that has the capability of cause breaks in chromosomes, cause sections of them to be destroyed, and to rearrange the sections and thus cause mutations which can lead to various types of cancer.
Hydroquinone | chemical compound | Britannica
Hydroquinone, colourless, crystalline organic compound formed by chemical reduction of benzoquinone. See quinone. quinone. Quinone, any member of a class of cyclic organic compounds containing two carbonyl groups, > C = O, either adjacent or separated by a vinylene group, ―CH = CH―, in a six-membered unsaturated ring.
Hydroquinone Topical - Side Effects, Dosage, Interactions .
Nov 09, 2018· 4.5 Stars. Hydroquinone decreases the formation of melanin in the skin. Melanin is the pigment in skin that gives it a brown color. Hydroquinone topical (for the skin) is used to lighten areas of darkened skin such as freckles, age spots, melasma (sun damage), or chloasma (darkened skin caused by hormonal changes).
Hydroquinone Prices, Coupons & Savings Tips - GoodRx
Generic Eldoquin Forte. HYDROQUINONE is applied to the the skin to lighten areas that have darkened. Some products also contain sunscreens. The lowest GoodRx price for the most common version of hydroquinone is around $34.07, 55% off the average retail price of …
Hydroquinone - epa
Hydroquinone is used as a developing agent in black-and-white photography, lithography, and x-ray films. It is also used as an intermediate to produce antioxidants for rubber and food. It is added to a number of industrial monomers to inhibit polymerization during shipping, storage, and processing. (.
Hydroquinone supplier distributor- CAS 123-31-9
Hydroquinone is a water-soluble reducing agent making it an excellent polymerization inhibitor for acrylates . It also finds use in topical skin creams and lotions for reducing the signs of age.
Best Hydroquinone 4 Creams for Skin Bleaching | Top 4% .
Dec 18, 2018· Hydroquinone also is a component of the herbal remedy uva ursi. Because of dangers associated with the substance, several countries have banned hydroquinone, and the U.S. Food and Drug Administration (FDA) has proposed a ban on most prescription and over-the-counter hydroquinone …
Chemical Peels & Hydroquinone | Healthfully
Jul 18, 2017· A chemical peel can help to address skin discoloration issues such as melasma, age spots or liver spots, as well as discolorations caused by chronic acne. To enhance the effects of the peel, the bleaching agent hydroquinone is sometimes added to the peeling agent.
Hydroquinone | Spectrum - Spectrum Chemical
Hydroquinone, USP is an effective topical medicine used to treat dark colored patches, freckles, and spots on the skin that appear due to sun exposure. All Spectrum Chemical USP grade products are manufactured, packaged and stored under
Hydroquinone | C6H6O2 | ChemSpider
A member of the class of benzosemiquinones which results from the removal of one hydrogen atom with its electron from hydroquinone (or from the addition of one hydrogen atom with its electron to <ital >p</ital>-benzoquinone). Hydroquinone is an inhibitor and antioxidant, also is an intermediate in the synthesis of dyes, motor fuels, and oils.
Hydroquinone topical Side Effects: Common, Severe, Long .
Jul 01, 2019· For the Consumer. Applies to hydroquinone topical: topical combination cream, topical cream gel emulsion or solution. Side effects include: Mild skin irritation and sensitization (e.g., burning, erythema, stinging).
Hydroquinone | C6H4(OH)2 - PubChem
Hydroquinone | DermNet NZ
2-Methylhydroquinone | C7H8O2 - PubChem
Toluquinol is a member of the class of hydroquinones that is hydroquinone in which one of the benzene hydrogens has been replaced by a methyl group. It has a role as an angiogenesis inhibitor, an anti-inflammatory agent and a Penicillium metabolite.
Hydroquinone | Sigma-Aldrich
Members of the ecto-NOX family, such as CNOX, or ENOX1, are involved in plasma membrane transport pathways. These enzymes exhibit both a hydroquinone (NADH) oxidase activity and a protein disulfide-thiol interchange activity in series, with each activity cycling every 22 to 26 minutes (Scarlett et al., 2005 [PubMed 15882838]
Hydroquinone and Chemical Burn - Reviews - Treato
Hydroquinone and Chemical Burn. Hydroquinone is a skin medication. Uses: Our data suggest that some patients take Hydroquinone for Acne, Scars and Freckles, although this is not an approved use*. In addition, it is approved for Hyperpigmentation, Skin Lightening and Melasma.
Hydroquinone Prices, Coupons & Savings Tips - GoodRx
HYDROQUINONE is applied to the the skin to lighten areas that have darkened. Some products also contain sunscreens. The lowest GoodRx price for the most common version of hydroquinone is around $30.37, 58% off the average retail price of $74.03.
Hydroquinone - American Osteopathic College of . - aocd
Mechanism: Hydroquinone produces reversible lightening of the skin by interfering with melanin production by the melanocytes. Specifically, inhibition of the enzymatic conversion of tyrosine to DOPA (dihydroxyphenylalanine) results in the desired chemical reduction of pigment.
Hydroquinone: Indications, Side Effects, Warnings - Drugs
If you have a sulfite allergy, talk with your doctor. This medicine may cause harm if swallowed. If hydroquinone is swallowed, call a doctor or poison control center right away. Avoid sun, sunlamps, and tanning beds. Use sunscreen and wear clothing and eyewear that protects you from the sun.
Hydroquinone | C6H4(OH)2 - PubChem
Hydroquinone. Hydroquinone, also known as benzene-1, 4-diol, is an aromatic organic compound which is a type of phenol, having the chemical formula C6H4 (OH)2. Its chemical structure has two hydroxyl groups bonded to a benzene ring in a para position. Hydroquinone is commonly used as a biomarker for benzene exposure.
Hydroquinone Chemical Manufacturers, Suppliers - Buy Best .
Hydroquinone Chemical Supply Ability: 300 Ton/Tons per Month Superior product HQ 99.9%min Hydroquinone powder 123-31-9 Packaging & Delivery Packaging Details 25kg/bag, 19ton per 20'FCL withour pallet for Superior product HQ 99.9%min Hydroquinone powder 123-31-9 Port...
Hydroquinone: Uses, Safety, Side Effects, OTC Products .
Apr 16, 2018· Hydroquinone is a skin-lightening agent. It can lighten everything from freckles and acne scars to post-inflammatory marks caused by conditions like eczema.
Hydroquinone - Chemical Economics Handbook (CEH) | IHS Markit
Chemical Economics Handbook. Antioxidants, including p-phenylenediamines and substituted hydroquinones, are the largest application for hydroquinone, followed by polymerization inhibitors; these two applications account for 60% of world consumption. Both applications depend on production of several monomers (for plastics) and polymers,.
The Truth About Hydroquinone by MedicineNet
Hydroquinone products are popular for their skin-lightening properties in Asian and African cosmetics markets. In the U.S., they also are marketed for reducing age spots and blemishes. The reason cited for the proposed ban is that studies in rodents show "some evidence" that hydroquinone may act as a carcinogen or cancer -causing chemical, although its cancer -causing properties have yet to be …
CDC - NIOSH Pocket Guide to Chemical Hazards - Hydroquinone
NIOSH/OSHA. Up to 50 mg/m3: (APF = 25) Any powered, air-purifying respirator with a high-efficiency particulate filter. £ / (APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.
Is Hydroquinone Safe? - byrdie
According to cosmetic and plastic surgeon David Shafer, MD, FACS, "Hydroquinone is a chemical compound discovered in the early 1800s [and] was used in everything from skin care to photo developing.The chemical interacts with the melanin-producing cells in the skin, decreasing the production of pigment."