8-Hydroxyquinaldine 826-81-3

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8-Hydroxyquinaldine Basic information Product Name: 8-Hydroxyquinaldine Synonyms: 2-Methylquinolin-8-ol;2-methyl-8-quinolino;8-Hydroxyqinaldine;8-Hydroxyquinaldine,98%;8-Hydroxyquinaldine, 98% 100GR;8-Hydroxyquinaldine, 98% 25GR;8-Hydroxyquinaldine, 98% 500GR;8-Hydroxymethylquinoline CAS: 826-81-3 MF: C10H9NO MW: 159.18 EINECS: 212-562-6 Product Categories: Alkylquinolines;Hydroxyquinolines;Quinolines;Quinolines, Quinazolines and derivatives;bc0001 Mol File: 826-81-3.mol 8-Hydroxyquinaldine Chemical Properties Melting point  71-73 °C(lit.) Boiling point  267 °C(lit.) density  1.1202 (rough estimate) refractive index  1.6070 (estimate) Fp  139°C storage temp.  Store below +30°C. solubility  0.4g/l pka pK1:5.55(＋1);pK2:10.31(0) (25°C) form  Crystalline Powder color  Beige to brown PH 7-8 (100g/l, H2O, 20℃)(slurry) Water Solubility  insoluble BRN  119194 CAS DataBase Reference 826-81-3(CAS DataBase Reference) NIST Chemistry Reference 8-Quinolinol, 2-methyl-(826-81-3) EPA Substance Registry System 8-Quinolinol, 2-methyl- (826-81-3) Safety Information Hazard Codes  N,Xi Risk Statements  50/53-36/37/38 Safety Statements  60-61-24/25-36-26 RIDADR  UN 3077 9/PG 3 WGK Germany  2 RTECS  VC7920000 Hazard Note  Irritant TSCA  Yes HazardClass  9 PackingGroup  III HS Code  29334990 8-Hydroxyquinaldine Usage And Synthesis Chemical Properties beige to brown crystalline powder. Soluble in hot alcohol, ether and benzene, insoluble in water. Can volatilize with water vapor and sublimate at 100℃. With phenol odor. Uses 8-Hydroxyquinaldine is mainly used as metal ion extractant and metal ion determination, also used in the synthesis of dyes and pigments and the preparation of pharmaceutical intermediates. Preparation 8-hydroxyquinaldine is obtained from the reaction of 2-aminophenol with crotonaldehyde. Mix 2-aminophenol and 2-Nitrophenol homogeneously and add hydrochloric acid. Add crotonaldehyde under stirring. Heat for 6h and leave overnight. Distill the reacted o-nitrophenol by water distillation, and add sodium hydroxide solution to the residual solution to make it weakly basic. Then add powdered carbonyls for saturation, and distill 8-Hydroxyquinaldine by water distillation, and then distill the crude product under reduced pressure and recrystallize it with ethanol to obtain 8-hydroxyquinaldine. Definition ChEBI: 2-Methylquinolin-8-ol is a hydroxyquinoline. Synthesis Reference(s) Tetrahedron, 52, p. 2937, 1996 DOI: 10.1016/0040-4020(95)01118-8 General Description 2-Methyl-8-quinolinol is a methyl substituted quinolinol derivative that shows fungicidal property. It can also undergo complexation with transition metal complexes. Purification Methods Crystallise the quinoline from EtOH or aqueous EtOH. Its solubility at 20o in H2O is 0.366g/L, and in CHCl3 it is 466g/L. It complexes with many metals. [Beilstein 21 H 106, 21 III/IV 2132.] 8-Hydroxyquinaldine Preparation Products And Raw materials Raw materials 2-Aminophenol-->2-Nitrophenol-->Crotonaldehyde (trans predominantly) Preparation Products 8-Hydroxyquinoline-2-carboxaldehyde-->BIS(2-METHYL-8-HYDROXYQUINOLINATO)ZINC-->8-hydroxy-2-methylquinoline-7-carboxylic acid-->2-Methylquinoline-8-carbonitrile



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