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P-aminobenzenesulfonic acid is a pharmaceutical dye intermediate

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  • Sulfanilic acid | C6H7NO3S - PubChem

    Dye Intermediate H Acid Dye Intermediate 1-Amino-8-hydroxynaphthalene-3 6-disulphonic Acid ... P-aminobenzenesulfonic acid is a pharmaceutical dye intermediate. US 1.00-100.00 ... dyestuff intermediates, and pharmaceutical intermediates dyestuff dye intermediate There are 4,793 suppliers who sells dyestuff dye intermediate on leshotelsmaya.com ...

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  • dyestuff dye intermediate, dyestuff dye intermediate ...

    4-AMINOBENZENESULFONIC ACID 121-57-3 printing & dyeing intermediate 121-57-3 Suppliers,provide 4-AMINOBENZENESULFONIC ACID 121-57-3 printing & dyeing intermediate 121-57-3 product and the products related with China (Mainland) 4-AMINOBENZENESULFONIC ACID 121-57-3 printing & dyeing intermediate 121-57-3 Hebei yanxi chemical co.,LTD. China (Mainland)

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  • 4-AMINOBENZENESULFONIC ACID 121-57-3 printing

    Metanilic acid C6H4(NH2) (S03H) [1.3], which crystallizes in prisms, is formed b y the reduction of meta-nitrobenzene sulphonic acid and is used in the preparation of various azo dyes. Local: Sulfanilic acid is a light grey powder or crystals; slightly soluble in water, alcohol, and ether, soluble in hot water and fuming hydrochloric acid, char ...

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  • METANILIC ACID (3-AMINO-BENZENESULFONIC ACID)

    Search results for 2- aminobenzenesulfonic acid at Sigma-Aldrich. Compare Products: Select up to 4 products. *Please select more than one item to compare

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  • 2- aminobenzenesulfonic acid | Sigma-Aldrich

    For example, many di-substituted benzene compounds are environmental pollutants or drug metabolites or intermediates in the chemical and pharmaceutical industries . Aminobenzenesulfonic acid (ABSA) is a chemical intermediate widely used in pharmaceutical production . ABSA has three positional isomers: 2-ABSA, 3-ABSA, and 4-ABSA.

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  • O-Phenolsulfonic acid | HOC6H4SO3H - PubChem

    2019-3-1 · Procedure for making an azo dye using an aminobenzenesulfonic acid Diazotization of Aminobenzenesulfonic acid In an 18 x 150 mm test tube, dissolve 0.49 g of 2-, 3- or 4-aminobenzenesulfonic acid in 5 mL of 2.5% Na2CO3 solution. Place the test tube in a beaker of boiling water on a hot plate and stir to completely dissolve the solid.

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  • Direct and simultaneous recognition of the positional ...

    2006-4-16 · The various operations of intermediate chemistry 6 Sulfonation 6 Nitration 6 Reduction 7 ... p-Nitrochlorobenzene-o-sulfonic acid and p-nitroaniline- ... p-Aminosalicylic acid 156 Preparation of the azo dye . 156 Reduction 157 Derivatives of toluene 158

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  • Experiment 19: Combinatorial Synthesis of Azo Dyes

    2014-12-19 · Dyes are used in almost every commercial product such as food, clothing, pigments and paints, etc. There are many different classes of dyes in which azo dyes are certainly one of the most important classes. About half of the dyes used in industry are azo dyes. Azo dyes have the basic structure, Ar−N=N−Ar’, where Ar and Ar’ are two aromatic

    Get Price
  • Sulfanilic acid | C6H7NO3S - PubChem

    Sulfanilic acid is produced, as an intermediate or a final product, by process units covered under this subpart. 40 CFR 60.489 (USEPA); U.S. National Archives and Records Administration's Electronic Code of Federal Regulations.

    Get Price
  • dyestuff dye intermediate, dyestuff dye intermediate ...

    Dye Intermediate H Acid Dye Intermediate 1-Amino-8-hydroxynaphthalene-3 6-disulphonic Acid ... P-aminobenzenesulfonic acid is a pharmaceutical dye intermediate. US 1.00-100.00 ... dyestuff intermediates, and pharmaceutical intermediates dyestuff dye intermediate There are 4,793 suppliers who sells dyestuff dye intermediate on leshotelsmaya.com ...

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  • 4-AMINOBENZENESULFONIC ACID 121-57-3 printing

    4-AMINOBENZENESULFONIC ACID 121-57-3 printing & dyeing intermediate 121-57-3 Suppliers,provide 4-AMINOBENZENESULFONIC ACID 121-57-3 printing & dyeing intermediate 121-57-3 product and the products related with China (Mainland) 4-AMINOBENZENESULFONIC ACID 121-57-3 printing & dyeing intermediate 121-57-3 Hebei yanxi chemical co.,LTD. China (Mainland)

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  • METANILIC ACID (3-AMINO-BENZENESULFONIC ACID)

    Metanilic acid C6H4(NH2) (S03H) [1.3], which crystallizes in prisms, is formed b y the reduction of meta-nitrobenzene sulphonic acid and is used in the preparation of various azo dyes. Local: Sulfanilic acid is a light grey powder or crystals; slightly soluble in water, alcohol, and ether, soluble in hot water and fuming hydrochloric acid, char ...

    Get Price
  • 2- aminobenzenesulfonic acid | Sigma-Aldrich

    Search results for 2- aminobenzenesulfonic acid at Sigma-Aldrich. Compare Products: Select up to 4 products. *Please select more than one item to compare

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  • O-Phenolsulfonic acid | HOC6H4SO3H - PubChem

    Phenolsulfonic acid, liquid appears as a yellowish liquid that becomes brown on exposure to air.Soluble in alcohol. Irritating to mucous membranes, skin, and eyes. Moderately toxic by ingestion. Used as a laboratory reagent, in water analysis and in the manufacture of pharmaceuticals. A mixture of …

    Get Price
  • Direct and simultaneous recognition of the positional ...

    For example, many di-substituted benzene compounds are environmental pollutants or drug metabolites or intermediates in the chemical and pharmaceutical industries . Aminobenzenesulfonic acid (ABSA) is a chemical intermediate widely used in pharmaceutical production . ABSA has three positional isomers: 2-ABSA, 3-ABSA, and 4-ABSA.

    Get Price
  • Experiment 19: Combinatorial Synthesis of Azo Dyes

    2019-3-1 · Procedure for making an azo dye using an aminobenzenesulfonic acid Diazotization of Aminobenzenesulfonic acid In an 18 x 150 mm test tube, dissolve 0.49 g of 2-, 3- or 4-aminobenzenesulfonic acid in 5 mL of 2.5% Na2CO3 solution. Place the test tube in a beaker of boiling water on a hot plate and stir to completely dissolve the solid.

    Get Price
  • FUNDAMENTAL PROCESSES OF DYE CHEMISTRY

    2006-4-16 · The various operations of intermediate chemistry 6 Sulfonation 6 Nitration 6 Reduction 7 ... p-Nitrochlorobenzene-o-sulfonic acid and p-nitroaniline- ... p-Aminosalicylic acid 156 Preparation of the azo dye . 156 Reduction 157 Derivatives of toluene 158

    Get Price
  • Experiment 8 Synthesis of an Azo Dye - the Coupling ...

    2014-12-19 · Dyes are used in almost every commercial product such as food, clothing, pigments and paints, etc. There are many different classes of dyes in which azo dyes are certainly one of the most important classes. About half of the dyes used in industry are azo dyes. Azo dyes have the basic structure, Ar−N=N−Ar’, where Ar and Ar’ are two aromatic

    Get Price
  • Sulfonic acid amino compound | Chemical Product

    The sulfonic acid amino compound is a kind of organic compound in which a sulfonic acid is bonded to an amino group, and its main uses are as follows: 1. It can be used as a raw material for synthesizing sweeteners, herbicides and preservatives. 2, used as bleaching agent and softener for fiber, paper and wood; bactericide for water treatment; cotton fiber flame retardant; resin curing agent ...

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  • CAS 88-21-1 Aniline-2-sulfonic acid products

    Aniline-2-sulfonic acid. Appearance:contact us for more details about Aniline-2-sulfonic acid, CAS:88-21-1 Purity:contact us for more details about Aniline-2-sulfonic acid, CAS:88-21-1 Packaging:Glass bottle in aluminum foil bag, from mg scale to kg scale Usage:Chemicals, pharmaceutical research, pharmaceutical intermediates, reagents Brand:FINETECH

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  • 88-21-1|2-Aminobenzenesulfonic acid|BLD Pharm

    Size Price Sale Price Discount Stock-CN Stock-US Stock-IND Stock-EU Quantity ( 0) Bulk Inquiry Add to Cart How to Order +86-21-61629022 [email protected] [email protected] Catalog

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  • CAS No.88-64-2,Benzenesulfonic acid,4-(acetylamino)

    4-Acetamido-2-aminobenzenesulfonic acid cas 88-64-2. Min.Order: 0 . FOB Price: USD 0.0-0.0 4-Acetamido-2-aminobenzenesulfonic acid cas 88-64-2Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate …

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  • China Sulfanilic Acid, Sulfanilic Acid Manufacturers ...

    China Sulfanilic Acid manufacturers - Select 2021 high quality Sulfanilic Acid products in best price from certified Chinese Acid manufacturers, China Auxiliary suppliers, wholesalers and factory on …

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  • Diamino stilbene disulfonic acid, CAS Number: 81-11-8

    Diamino stilbene disulfonic acid - chemical information, properties, structures, articles, patents and more chemical data. ... (5-aminobenzenesulfonic acid ... A specialized stock manufacturer of fine chemicals,including pesticide intermediate,pharmaceutical intermediate and dye intermediate.We have close relationship with Nanjing university ...

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  • Nitration and Sulfonation of Benzene - Chemistry

    Mechanism. To produce benzenesulfonic acid from benzene, fuming sulfuric acid and sulfur trioxide are added. Fuming sulfuric acid, also refered to as oleum, is a concentrated solution of dissolved sulfur trioxide in sulfuric acid.The sulfur in sulfur trioxide is electrophilic because the oxygens pull electrons away from it because oxygen is very electronegative.

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  • CAS No.96-78-6,4-Aminoacetanilide-3-sulfonic acid

    Welcome to LookChem.com Sign In|Join Free. Home; Mall. Sell Offers; Buy Offers

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  • Toxicological significance of azo dye metabolism by

    p-Nitroaniline is a metabolite of Para Red (Table 2). o-Toluidine was first synthesized in 1844, and was mainly used as a chemical intermediate in dye, rubber, and pharmaceutical production (44, 123). o-Toluidine is a mutagen, and is carcinogenic to experimental animals .

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  • Ozonation of the reactive dye intermediate

    The present work is focused on the heterogeneous photocatalytic degradation of H-acid, a toxic and non-biodegradable dye intermediate, in TiO2 suspensions and TiO2 thin film fixed bed reactor (TFFBR).

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  • Sulfanilic acid | C6H7NO3S - PubChem

    Sulfanilic acid is produced, as an intermediate or a final product, by process units covered under this subpart. 40 CFR 60.489 (USEPA); U.S. National Archives and Records Administration's Electronic Code of Federal Regulations.

    Get Price
  • dyestuff dye intermediate, dyestuff dye intermediate ...

    Dye Intermediate H Acid Dye Intermediate 1-Amino-8-hydroxynaphthalene-3 6-disulphonic Acid ... P-aminobenzenesulfonic acid is a pharmaceutical dye intermediate. US 1.00-100.00 ... dyestuff intermediates, and pharmaceutical intermediates dyestuff dye intermediate There are 4,793 suppliers who sells dyestuff dye intermediate on leshotelsmaya.com ...

    Get Price
  • 4-AMINOBENZENESULFONIC ACID 121-57-3 printing

    4-AMINOBENZENESULFONIC ACID 121-57-3 printing & dyeing intermediate 121-57-3 Suppliers,provide 4-AMINOBENZENESULFONIC ACID 121-57-3 printing & dyeing intermediate 121-57-3 product and the products related with China (Mainland) 4-AMINOBENZENESULFONIC ACID 121-57-3 printing & dyeing intermediate 121-57-3 Hebei yanxi chemical co.,LTD. China (Mainland)

    Get Price
  • METANILIC ACID (3-AMINO-BENZENESULFONIC ACID)

    Metanilic acid C6H4(NH2) (S03H) [1.3], which crystallizes in prisms, is formed b y the reduction of meta-nitrobenzene sulphonic acid and is used in the preparation of various azo dyes. Local: Sulfanilic acid is a light grey powder or crystals; slightly soluble in water, alcohol, and ether, soluble in hot water and fuming hydrochloric acid, char ...

    Get Price
  • 2- aminobenzenesulfonic acid | Sigma-Aldrich

    Search results for 2- aminobenzenesulfonic acid at Sigma-Aldrich. Compare Products: Select up to 4 products. *Please select more than one item to compare

    Get Price
  • O-Phenolsulfonic acid | HOC6H4SO3H - PubChem

    Phenolsulfonic acid, liquid appears as a yellowish liquid that becomes brown on exposure to air.Soluble in alcohol. Irritating to mucous membranes, skin, and eyes. Moderately toxic by ingestion. Used as a laboratory reagent, in water analysis and in the manufacture of pharmaceuticals. A mixture of …

    Get Price
  • Direct and simultaneous recognition of the positional ...

    For example, many di-substituted benzene compounds are environmental pollutants or drug metabolites or intermediates in the chemical and pharmaceutical industries . Aminobenzenesulfonic acid (ABSA) is a chemical intermediate widely used in pharmaceutical production . ABSA has three positional isomers: 2-ABSA, 3-ABSA, and 4-ABSA.

    Get Price
  • Experiment 19: Combinatorial Synthesis of Azo Dyes

    2019-3-1 · Procedure for making an azo dye using an aminobenzenesulfonic acid Diazotization of Aminobenzenesulfonic acid In an 18 x 150 mm test tube, dissolve 0.49 g of 2-, 3- or 4-aminobenzenesulfonic acid in 5 mL of 2.5% Na2CO3 solution. Place the test tube in a beaker of boiling water on a hot plate and stir to completely dissolve the solid.

    Get Price
  • FUNDAMENTAL PROCESSES OF DYE CHEMISTRY

    2006-4-16 · The various operations of intermediate chemistry 6 Sulfonation 6 Nitration 6 Reduction 7 ... p-Nitrochlorobenzene-o-sulfonic acid and p-nitroaniline- ... p-Aminosalicylic acid 156 Preparation of the azo dye . 156 Reduction 157 Derivatives of toluene 158

    Get Price
  • Experiment 8 Synthesis of an Azo Dye - the Coupling ...

    2014-12-19 · Dyes are used in almost every commercial product such as food, clothing, pigments and paints, etc. There are many different classes of dyes in which azo dyes are certainly one of the most important classes. About half of the dyes used in industry are azo dyes. Azo dyes have the basic structure, Ar−N=N−Ar’, where Ar and Ar’ are two aromatic

    Get Price
  • Sulfanilic acids. Medical search

    2021-2-23 · Sulfanilic Acids: Aminobenzenesulfonic acids.Organic acids that are used in the manufacture of dyes and organic chemicals and as reagents. Diazonium Compounds Organic Chemicals: A broad class of substances containing carbon and its derivatives.Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements.

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  • Speciality Chemicals - Trichloro Trifluoro Ethane ...

    Manufacturer of Speciality Chemicals - Trichloro Trifluoro Ethane, 9-Anthracenemethanol, 2 Napthol 6 8 Di Sulphonic Acid and T.D.I. 80/20 offered by A. B. Enterprises, Mumbai, Maharashtra.

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  • CN103191759B - Regeneration method of Pd/C

    The invention discloses a regeneration method of a Pd/C catalyst and an application of the regenerated Pd/C catalyst. The Pd/C catalyst is inactivated due to poisoning by sulfur-containing substances during the process of catalyzing the hydrogenation synthesis of m-aminobenzenesulfonic acid from m-nitrobenzenesulfonic acid; and the regeneration method comprises the steps of drying and ...

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  • Benzene Ring Bonded Directly To The Sulfonate Sulfur

    Abstract: 3-Arylphenyl sulfide derivatives represented by general formula (I): (wherein R is a C2-C6 alkyl group, a C2-C6 alkenyl group, a C2-C6 alkynyl group or the like, B0 to B2 and B3 are hydrogen atoms, halogen atoms, cyano groups, C1-C4 haloalkyl groups or the like, n is 0, 1 or 2, and Ar is a phenyl ring, a pyridine ring, a thiophene ring, a pyrazole ring or the like), and insecticides ...

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  • Hawley's Condensed Chemical Dictionary - Wiley -

    Hawley's Condensed Chemical Dictionary is a compilation of technical data and descriptive information covering thousands of chemicals and chemical phenomena, trade name products, processes, reactions, products, and related terminology. Provides concise, condensed, and prompt definitions of terms and phenomena in chemistry, biology, biochemistry, and more.

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  • (PDF) Toxicity assessment and microbial degradation

    during degradation of 4- aminobenzenesulfonic acid by a 45 Kuhad R C, Sood N, Tripathi K K, Singh A & Ward OP, two species bacterial culture, Arch Microbiol, 159 (1993) Developments in microbial methods for the treatment of dye 124.

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  • Organic Pigment | a2bchem.com

    boronic acids, carboxylic acids, imidazoles, thiazoles, azoles, indoles, oxindoles, pyridines, heterocycles, bormides, fluoro compounds, amines, aldehydes ...

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  • James A Field | UA Profiles

    2021-2-28 · Roxarsone (4-hydroxy-3-nitro-phenylarsonic acid) and p-arsanilic acid (4-aminophenylarsonic acid) are feed additives widely used in the broiler and swine industry. This study evaluated the inhibitory effect of roxarsone, p-arsanilic, and other phenylarsonic compounds on the activity of acetate- and H(2)-utilizing methanogenic microorganisms.

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  • CLUMP RECOGNITION ANIMAL LITTER - Wadams,

    The leuco base is then oxidized with lead dioxide and acid or with dichromate and acid to form the color-dye. The intermediate 2-formyl-5-hydroxybenzenesulfonic acid is prepared by the potassium permanganate oxidation of 2,2′-(1,2-ethenediyl)-bis(5-aminobenzenesulfonic acid) to sodium 5-amino-2-formylbenzenesulfonate.

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  • 26th Iranian Seminar on Organic Chemistry

    Important Information Conference Date: 2019-03-12 Abstract deadling: 2018-12-06 Abstract Review Date: 2019-01-10 Registration Deadline: 2019-01-20

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