Naphthols - General, Suppliers, Product, Process, Manufacture, MSDS, Study, Raw material , Uses , Patent ,Toxity , Market.

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Project at a Glance	Contents on the CD ROM
Naphthols and their derivatives are used in the manufacture of dyes; β-naphthol methyl ether and β-naphthol ethyl ether (neroli oil) are used in cosmetics manufacture for the preparation of soap perfumes Naphthol dyes are true cold water dyes since many of the components used in naphthol dyeing are known or suspected carcinogens, they should not be used in your kitchen. 1-Naphthol, or α-naphthol, is a colorless crystalline solid with the formula c10h7oh. It is an isomer of 2-naphthol differing by the location of the hydroxyl group on naphthalene. The naphthols are naphthalene homologues of phenol, with the hydroxyl group being more reactive than in the phenols. Both isomers are soluble in simple alcohols, ethers, and chloroform. They can be used in the production of dyes and in organic synthesis. Cotton, rayon, and other celluosic fibers, as well as silk, can also be dyed with azoic or naphthol dyes. Naphthol is sometimes also spelled as 'napthol' or 'naphtol' the latter is the German spelling. They should be used only in a lab, or in a dye studio in which good laboratory practices are invariably followed Naphthol is an alcohol derived from naphthalene (C10H8), which is obtained from coal-tar in the form of white shining crystals of a strong, disagreeable odor, soluble in alcohol, but insoluble in water, and employed locally in indolent ulcers and as a disinfectant in pus-pockets and wounds and skin diseases. 1-naphthol has recently been shown to be selectively toxic to short-term organ cultures of human colorectal tumor tissue. The mechanism underlying 1-naphthol's selective toxicity is as yet unknown, but may be due to the formation naphthoquinone metabolites, which are known to be highly toxic to tumor cells. By using high-performance liquid chromatography with reductive electrochemical detection, it has been possible to show that 1-naphthol is converted to naphthoquinone metabolites by rat liver microsomes. At least two metabolic pathways, independent of cytochrome P-450, appear to be involved. Iron-dependent lipid peroxidation appears to be responsible for at least part of the conversion of 1-naphthol topredominantly 1,4-naphthoquinone, and it superoxide anion radical generation by nadph-cytochrome P-450 reductase could also catalyze this conversion. Workers in tar distillation and naphthalene distillation are exposed to rather low concentrations of naphthalene and methylated naphthalenes and naphthols. Naphthols and 1,4-naphthoquinone identified in the urine appear to be the products of the hydroxylation of naphthalene present in the breathing-zone air. These findings suggest that the summary concentration of naphthols in urine can be used as a biomarker for naphthalene exposures	General 1-Naphthol 2-Naphthol 1,1'-Bi-2-Naphthol About naphthol dyes Naphthol and bases Naphthol description Gas phase solvatochromic effects of phenol and naphthol Naphthols Excited-State Proton Transfer Excited state properties of naphthol Opinion of the scientific committee on cosmetic products Synthesis, characterization and antibacterial activity Toxity Bayer crop science lp Bio catalysis for oxidation of naphthalene Mechanisms of toxic injury to isolated hepatocytes Huma health effect Preliminary studies on the toxicity and mutageni city Selective toxicity of naphthol to human colorectal tumour tissue Toxicity of carbaryl and 1-naphthol to four species of freshwater fish MSDS Naphthol-1 Naphthol spirits 66/3 1-Naphthol >98% 2-Naphthol, 98% 1-Amino-2-naphthol-4-sulfonic acid solution Alpha-naphthol Ultra view universal alkaline phosphatase red naphthol 1-Naphthol (alpha-) Naphthol yellow Hydroxy naphthol blue Products Three-component synthesis of amidoalkyl naphthols and carbamato-alkyl Daikaffil chemicals india limited Naphthols fast salt Himanshu dye chem Alpha naphthols Introduction to naphthols dye The synthesis of 1 and 2-naphthols from napththalene Patent Heterocyclic alkyl naphthols Modified naphthalene formaldehyde resin, tricyclodecane skeleton-containing naphthol Process for producing 2-methyl-1-naphthol Methylation of α-naphthol to 2-methyl-1-naphthol Synthesis of 2-methyl-1-naphthol Crystalline nickel chelate of 1-nitroso-2-naphthol and process for producing same Process for producing 8-amino-1-naphthol-3,6-disulfonic acid Process for the preparation of 1,1'-bi-2-naphthol Sulfate and sulfonate beta-naphthol polyglycol ethers Method of preparing naphthol-modified phenolic resin and epoxy resin Process for preparing alpha-naphthol esters of aliphatic carboxylic acids Suppliers Suppliers of China Suppliers of China 1 Suppliers of China 2 Suppliers of India Suppliers of India 1 Suppliers of India 2 Suppliers of India 3 Suppliers list of Naphthol Order the CD ROM Today	Raw material Extraction and Separation of Benzoic Acid, 2-Naphthol Organic compound Phenol Phenol and Naphthol Solubility Manufacturing Company from China Company another from China Company from India Company from India1 Company from India2 Company from India 3 Company from India 4 Manufacture of Naphthol Company from Mumbai Company from Mumbai 1 Company from Rajasthan List of companies in Naphthol Market Trends and prospects in international trade in naphthols and their salts The 2009 import and export market for amino-naphthols and other amino-phenols Beta naphthol Naphthols ironoxide Naphthols powder & liquid, ahmedabad cantonment Catechols & naphthols Study Catabolism of premercapturic acid pathway metabolites of naphthalene to naphthols Conversion of 1-naphthol to naphthoquinone metabolites by rat liver microsomes Electrochemical sensor for naphthols based on gold nanoparticles An innovative new application for waste phenolic compounds Mechanisms of toxic injury to isolated hepatocytes by 1-naphthol Metabolism of 1-naphthol by tyrosinase Simultaneous determination of urinary 1- and 2-naphthols, 3- and 9-phenanthrols A study for the proper application of urinary naphthols Urinary naphthols as an indicator of exposure to naphthalene Uses Acid red 88 1-amino-2-naphthol-4-sulfonic acid an efficient solvent-free protocol for the synthesis of 1-amidoalkyl-2-naphthols Ar-tetrahydro-α-naphthol Naphthol or beta naphthol. c10h7oh Pan pesticides database - chemicals Dyes applications, properties and equipment Naphthol green b Use of naphthol in pregnancy Substrates for western blotting Process Development of commercial grade naphthols Highly enantio selective oxidative couplings of 2-naphthols Organic chemistry laboratory procedures Photogeneration of 1,5-naphthoquinone methides via excited-state (formal) intra molecular proton Sids initial assessment Synchronous-derivative phosphorimetric determination
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