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CAS No 490-79-9 , 2,5-dihydroxybenzoic acid Search by region : China

  • Name: 2,5-dihydroxybenzoic acid
  • Synonyms: Gensigen; Gentisate; 5-Hydroxysalicylic acid;gentisic acid;2,5-dihydroxybenzoic acid; Gensigon; 490-79-9; Hydroquinonecarboxylic acid; 2,5-DIHYDROXYBENZOIC ACID;
  • CAS Registry Number:
  • Transport: 25kgs
  • Melting Point: 204-207 ºC
  • Density: 1.559 g/cm3
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • HS Code: 29182990
  • EINECS: 207-718-5
  • Molecular Weight: 154.12014
  • InchiKey: WXTMDXOMEHJXQO-UHFFFAOYSA-N
  • InChI: InChI=1S/C7H6O4/c8-4-1-2-6(9)5(3-4)7(10)11/h1-3,8-9H,(H,10,11)
  • Risk Statements: S26;S37/39
  • Molecular Formula: C7H6O4
  • Molecular Structure:CAS No:490-79-9 2,5-dihydroxybenzoic acid

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490-79-9 2,5-Dihydroxy benzoic acid

  • China Taiyuan RHF CO., ltd. [Manufacturers]
  • Tel: 0351-7436719
  • Fax: +86-351-7436719
  • Address: Shuangta South Alley 46,2-1, YingZe Area,Taiyuan, ShanXi null,ShanXiChina
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490-79-9 2,5-Dihydroxy benzoic acid

  • China XinChem Corporation [Manufacturers]
  • Tel: +86-(21)-34123252
  • Fax: +86-(21)-54153973
  • Address: 102/30, 3455 Chunshen Road, Shanghai 201100, null,ShanghaiChina
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490-79-9 2,5-Dihydroxy benzoic acid

  • China ORCHID CHEMICAL SUPPLIES LTD (OCS) [Importer/Exporter]
  • Tel: +86-571-85395792
  • Fax: +86-571-85420103
  • Address: 607, North Zhongshan Road, Hangzhou 310000 China null,ZhejiangChina
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490-79-9 Gentisic acid

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490-79-9 2,5-Dihydroxybenzoic Acid

  • China Kouting Chemical Co.,Ltd [Importer/Exporter]
  • Tel: +86-(21)-58116473
  • Fax: +86-(21)-61094103
  • Address: Hunan Road, Pudong New District, Shanghai, Shanghai 201318, shanghai,shanghaiChina
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490-79-9 2,5-Dihydroxybenzoic Acid

  • China HuaiBei SanHe Developing Co., Ltd. [Manufacturers]
  • Tel: 86-561-3191113
  • Fax: +86-561-3192253
  • Address: Room 201,Building ZY-1,GuCheng Road,Huaibei,Anhui,China null,anhuiChina
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490-79-9 2,5-Dihydroxy Benzoic Acid

  • China HANGZHOU THINK CHEMICAL CO. [Manufacturer]
  • Tel: +86-571-81956191/ +86-571-81956192
  • Fax: +86-571-81956190
  • Address: 425 MOGAN HILL ROAD ,
    HANGZHOU, 310011 CHINA null,nullChina
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490-79-9 2,5-dihydroxy benzoic acid

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490-79-9 2,5-DIHYDROXY BENZOIC ACID

  • China ORICHEM INTERNATIONAL LTD. [Manufacturer, Trading Company]
  • Tel: 86-0571-85270505
  • Fax: 86-0571-85270303
  • Address: FLAT E,16/F,1 HUAZHE PLAZA,HANGZHOU, null,nullChina
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490-79-9 2,5-Dihydroxybenzoic acid

  • China Shanghai ChemVia Co., Ltd [Manufacturer]
  • Tel: +86-21-6875-8016 (Sunny Liu)/ +86-21-6875-8025 (Amy Qin)
  • Fax: +86-21-6875-8026
  • Address: Company Name: Shanghai ChemVia Co.,Ltd.
    22F, Huadu Mansion,
    No. 838, Zhangyang Rd,
    Pudong,Shanghai, China
    ZipCode: 200122 null,nullChina
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References of 2,5-dihydroxybenzoic acid
Title: Gentisic Acid
CAS Registry Number: 490-79-9
CAS Name: 2,5-Dihydroxybenzoic acid
Synonyms: 5-hydroxysalicylic acid
Molecular Formula: C7H6O4
Molecular Weight: 154.12
Percent Composition: C 54.55%, H 3.92%, O 41.52%
Literature References: Occurs in gentian: Redgrove, Pharm. J. 122, 324 (1929). Found in urine of dogs after ingestion of salicylates: Neuberg, Berl. Klin. Wochenschr. 48, 799 (1911). Prepd from hydroquinone: Senhofer, Sarlay, Monatsh. Chem. 2, 448 (1881); Juch, ibid. 26, 839 (1905); Brunner, Ann. 351, 321 (1907); Zeltner, Landau, DE 258887; Frdl. 11, 210; Dyson, Manual of Organic Chemistry vol. I (London, 1950) p 614; by oxidation of salicylic acid with potassium persulfate: DE 81297 (to Schering AG); Frdl. 4, 127; from p-hydroxyphenol: Meyer, US 2588336 (1952 to Monsanto); from 5-bromo-2-hydroxybenzoic acid: Lowenthal, Pepper, J. Am. Chem. Soc. 72, 3292 (1950); by Kolbe synthesis: Clemens, US 2816137 (1957 to Eastman Kodak). Metabolic product of Penicillium patulum: Tanenbaum, Bassett, Biochim. Biophys. Acta 28, 21 (1958); of Polyporus tumulosus Cooke: Crowden, Ralph, Aust. J. Chem. 14, 475 (1961). Biosynthesis: Gatenback, Linnroth, Acta Chem. Scand. 16, 2298 (1962).
Properties: Needles, monoclinic prisms from water, mp 199-200°. Crystals are dimorphic and undergo phase inversion upon heating. The stable phase begins to sublime at 200° and melts at 205°. pK (25°): 2.93. Sol in water (about 1 part in 200 parts H2O at 5°, much more sol in hot water), alcohol, ether. Practically insol in carbon disulfide, chloroform, benzene.
Melting point: mp 199-200°
pKa: pK (25°): 2.93
 
Derivative Type: Sodium salt
CAS Registry Number: 4955-90-2
Synonyms: Sodium gentisate
Trademarks: Gentinatre; Gentisod; Legential; Gentisine U.C.B
Molecular Formula: C7H5NaO4
Molecular Weight: 176.10
Percent Composition: C 47.74%, H 2.86%, Na 13.05%, O 36.34%
Properties: Crystals with 5?H2O from water. Rapidly loses 3H2O on exposure to air, but holds ?H2O tenaciously even at 100°. Sol in water.
 
Therap-Cat: Analgesic; anti-inflammatory.
Keywords: Analgesic (Non-Narcotic); Anti-inflammatory (Nonsteroidal); Salicylic Acid Derivatives.