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Resorcinol Raw White Crystal Powder Raw Materials For Pharmaceutical Industry
- Hongkong Saichuang
Pharmaceutical intermediates
- Hubei China
- ISO9001
- 100grams
- Negotiated
- 25kg/drum
- Within 3-7days after payment received
- T/T, Western Union, MoneyGram
- 5000kg per month
Hongkong Pengfei Pharmaceutical Technology Co.,LtdChina
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Hongkong Pengfei Pharmaceutical Technology Co.,Ltd2020-07-10 09:46:19
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Product Details
Product Name: | resorcinol | Preferred IUPAC name: | Benzene-1,3-diol | Other names: | Resorcinol Resorcin m-Dihydroxybenzene 1,3-Benzenediol 1,3-Dihydroxybenzene 3-Hydroxyphenol m-Hydroquinone m-Benzenediol |
Number: | 108-46-3 | ChEBI: | CHEBI | ChemSpider: | 4878 |
KEGG: | D00133 | PubChem: | 5054 | UNII: | YUL4LO94HK |
UN number: | 2876 | Chemical formula: | C6H6O2 | Molar mass: | 110.1 g/mol |
Appearance: | White crystal powder | Odor: | Faint | Density: | 1.28 g/cm3, solid |
Melting point: | 110 °C (230 °F | Boiling point: | 277 °C (531 °F | Solubility in water: | 110 g/100 mL at 20 °C |
Vapor pressure: | 0.0002 mmHg (25°C) | Acidity (pKa): | 9.15 | Magnetic susceptibility (χ): | -67.26·10−6 cm3/mol |
Dipole moment: | 2.07±0.02 D | ATC code: | D10AX02,S01AX06 | EU classification (DSD): | Harmful (Xn) Dangerous for the environment (N) |
Flash point: | 127 °C | Explosive limits: | 1.4%-? | Purity: | 96% |
Product Description
High quality resorcinol raw white crystal powder material for industry and pharmaceutical use no 108-46-3
Product Name: | Potassium borohydride |
Synonyms: | Borate(1, tetrahydro-, potassium;Borate(1-), tetrahydro-,potassium;Borohydrure de potassium;borohydruredepotassium;K[BH4];Kaliumborhydrid;Kaliumtetrahydridoborat;KBH4 |
: | 13762-51-1 |
MF: | BH4K |
MW: | 53.94 |
EINECS: | 237-360-5 |
Mol File: | 13762-51-1.mol |
mp: | 500¡ãC(dec.)(lit.) |
Purity: | 96% |
Package | 25kg/drum (or following your demands) |
Uses: |
water soluble reductant (milder than Sodium borohydride), mainly used in drug, pulp bleaching, recovery of noble metals and preventation of the occurrence of public nuisances caused by heavy metals. It is reductant of carbonyl compound (aldehyde, ketone, acid, acid amide, acid anhydride, acid halogen, ester,enol ester, imide , lactone), carbonitriding chemicals (azide, diazo salts, hydrazone, imine, nitrile, oxime, nitro compound), peroxide and hydroperoxide; It also can be used to remove color, smell of organic chemicals, used to control pollution and recycle noble metals, the production of drug and fine chemicals, or used in the production and recovery of catalyst |
Resorcinol (or resorcin) is a benzenediol (m-dihydroxybenzene).
Chemistry
It is the 1,3-isomer (or meta-isomer) of benzenediol with the formula C6H4(OH)2. Austrian chemist Heinrich Hlasiwetz (1825–1875) is remembered for his chemical analysis of resorcinol and for his part in the first preparation of resorcinol, along with Ludwig Barth, which was published in 1864.
Nomenclature
Benzene-1,3-diol is the name recommended by the International Union of Pure and Applied Chemistry (IUPAC) in its 1993 Recommendations for the Nomenclature of Organic Chemistry.
Production
It is produced when any of a large number of resins (e.g., galbanum, asafoetida, etc.) are melted withpotassium hydroxide, or by the distillation of Brazilwood extract. It may be prepared synthetically by melting 3-iodophenol, phenol-3-sulfonic acid, or benzene-1,3-disulfonic acid with potassium carbonate; by the action of nitrous acid on 3-aminophenol or on 1,3-diaminobenzene. Many ortho- and para-compounds of the aromatic series (for example, the bromophenols, benzene-para-disulfonic acid) also yield resorcinol on fusion with potassium hydroxide.
Properties
Resorcinol crystallizes from benzene as colorless needles that are readily soluble in water, alcohol, and ether, but insoluble in chloroform and carbon disulfide. It reduces Fehlings solution and ammoniacal silver solutions. It does not form a precipitate with lead acetate solution, as does the isomericpyrocatechol. Iron(III) chloride colors its aqueous solution a dark-violet, and bromine water precipitates tribromoresorcin. These properties are what give it its use as a colouring agent for certain chromatographyexperiments. Sodium amalgam reduces it to dihydroresorcin, which when heated to 150 to 160 °C with concentrated barium hydroxide solution gives γ-acetylbutyric acid (D. Vorlgnder); when fused with potassium hydroxide, resorcinol yields phloroglucin, pyrocatechol, and diresorcin. It condenses with acidsor acid chlorides, in the presence of dehydrating agents, to oxyketones, e.g., with zinc chloride and glacial acetic acid at 145 °C it yields resacetophenone (HO)2C6H3~CO.CH3. With the anhydrides of dibasic acids, it yields fluoresceins. When heated with calcium chloride—ammonia to 200 °C it yields meta-dioxydiphenylamine. With sodium nitrite it forms a water-soluble blue dye, which is turned red by acids, and is used as an indicator, under the name of lacmoid. It condenses readily with aldehydes, yielding with formaldehyde, on the addition of catalytic hydrochloric acid, methylene diresorcin [(HO)C6H3(O)]2•CH2. Reaction with chloral hydrate in the presence of potassium bisulfate yields the lactoneof tetra-oxydiphenyl methane carboxylic acid. In alcoholic solution it condenses with sodium acetoacetate to form 4-methylumbelliferone.
In addition to electrophilic aromatic addition, resorcinol (and other poly-ols) undergo nucleophilic substitution via the enone form. With concentrated nitric acid, in the presence of cold concentratedsulfuric acid, it yields trinitro-resorcin (styphnic acid), which forms yellow crystals, exploding violently on rapid heating.
Occurrences
Resorcinol is one of the main natural phenols in argan oil.
Presence of the resorcinol moiety
Parts of a molecule of catechin, another natural compound that is present in tea, has the resorcinol skeleton structure in it.
Alkylresorcinols are a marker of whole grain diet. 4-Hexylresorcinol is an anesthetic found in throat losenges.
Applications
Medical
Used externally, it is an antiseptic and disinfectant, and is used 5 to 10% in ointments in the treatment of chronic skin diseases such aspsoriasis, hidradenitis suppurativa, and eczema of a sub-acute character. It is present in over-the-counter topical acne treatments at 2% or less concentration, and in prescription treatments at higher concentrations. Weak, watery solutions of resorcinol (25 to 35 g/kg) are useful in allaying the itching in erythematous eczema. A 2% solution used as a spray has been used with marked effect in hay feverand in whooping cough. In the latter disease 0.6 mL of the 2% solution has been given internally. It can be included as an anti-dandruff agent in shampoo or in sunscreen cosmetics. It has also been employed in the treatment of gastric ulcers in doses of 125 to 250 mg in pills, and is said to be analgesic and haemostatic in its action. In large doses, it is a poison, causing giddiness,deafness, salivation, sweating, and convulsions. It is also worked up in certain medicated soaps. Monoacetylresorcinol, C6H4(OH)(O-COCH3), is used under the name of euresol. Resorcinol is one of the active ingredients in products such as Resinol, Vagisil, and Clearasil.
Chemical
Resorcinol is also used as a chemical intermediate for the synthesis of pharmaceuticals and other organic compounds. It is used in the production of diazo dyes and plasticizers and as a UV absorber in resins.
An emerging use of resorcinol is as a template molecule in supramolecular chemistry. The -OH groups on resorcinol form hydrogen bonds to target molecules, holding them in the proper orientation for a reaction. Many such reactions are able to be carried out in the solid state, thereby reducing or eliminating the use of solvents that may be harmful to the environment. (see Green chemistry)
Resorcinol is an analytical reagent for the qualitative determination of ketoses (Seliwanoffs test).
Resorcinol is the starting material for resorcinarene molecules and the initiating explosive lead styphnate.
Resorcinol reacts with formaldehyde to form a thermoset resin which can form the basis of an aerogel.
Related compounds
Resorcinol is also a common scaffold that is found in a class of anticancer agents, some of which (luminespib, ganetespib, KW-2478, and onalespib) were in clinical trials as of 2014. Part of the resorcinol structure binds to inhibits the N-terminal domain of heat shock protein 90, which is a drug target for anticancer treatments.
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