Glycin, or N-(4-hydroxyphenyl)glycine, is N-substituted p-aminophenol. It is a photographic developing agent used in classic black-and-white developer solutions.[2] It is unrelated to the amino acidglycine. It is typically characterized as thin plates of white or silvery powder, although aged samples appear brown. It is sparingly soluble in water and most organic solvents; it is readily soluble in alkalies and acids.[3]
Glycin is structurally related to 4-aminophenol and Metol. Decarboxylation of glycin gives Metol. Glycin has a milder reduction potential than Metol. The two developers have markedly different character. Glycin is slower-acting, but much longer-lasting in solution. Glycin is rarely used as a developing agent, primarily because it is expensive. In its dry form, it also has limited shelf life compared to Metol and Phenidone.
Glycin can be synthesized by treating p-aminophenol with chloracetic acid in a solvent.
Glycin is employed in some procedures of analytical chemistry.
^Mitchell, Stephen C.; Waring, Rosemary H. (2000). "Aminophenols". Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH. doi:10.1002/14356007.a02_099. ISBN978-3527306732.
January 19, 2023
glycin, confused, with, glycine, hydroxyphenyl, glycine, substituted, aminophenol, photographic, developing, agent, used, classic, black, white, developer, solutions, unrelated, amino, acid, glycine, typically, characterized, thin, plates, white, silvery, powd. Not to be confused with glycine Glycin or N 4 hydroxyphenyl glycine is N substituted p aminophenol It is a photographic developing agent used in classic black and white developer solutions 2 It is unrelated to the amino acid glycine It is typically characterized as thin plates of white or silvery powder although aged samples appear brown It is sparingly soluble in water and most organic solvents it is readily soluble in alkalies and acids 3 Glycin 1 NamesIUPAC name N 4 Hydroxyphenyl glycinePreferred IUPAC name 4 Hydroxyanilino acetic acidOther names p hydroxyanilinoacetic acidphotoglycineIdentifiersCAS Number 122 87 2 Y3D model JSmol Interactive imageChEBI CHEBI 55443 YChemSpider 60494 YECHA InfoCard 100 004 165PubChem CID 67149UNII 3ET7L3AG0V YCompTox Dashboard EPA DTXSID9059547InChI InChI 1S C8H9NO3 c10 7 3 1 6 2 4 7 9 5 8 11 12 h1 4 9 10H 5H2 H 11 12 YKey WRUZLCLJULHLEY UHFFFAOYSA N YInChI 1 C8H9NO3 c10 7 3 1 6 2 4 7 9 5 8 11 12 h1 4 9 10H 5H2 H 11 12 Key WRUZLCLJULHLEY UHFFFAOYABSMILES O C O CNc1ccc O cc1PropertiesChemical formula C8H9NO3Molar mass 167 16 g molAppearance brown powderDensity 1 411 g mLMelting point 244 C 471 F 517 K Boiling point 446 3 C 835 3 F 719 5 K Except where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa Y verify what is Y N Infobox references Glycin is structurally related to 4 aminophenol and Metol Decarboxylation of glycin gives Metol Glycin has a milder reduction potential than Metol The two developers have markedly different character Glycin is slower acting but much longer lasting in solution Glycin is rarely used as a developing agent primarily because it is expensive In its dry form it also has limited shelf life compared to Metol and Phenidone Glycin can be synthesized by treating p aminophenol with chloracetic acid in a solvent Glycin is employed in some procedures of analytical chemistry References Edit Merck Index 11th Edition 4771 Photographic Chemical Descriptions Mitchell Stephen C Waring Rosemary H 2000 Aminophenols Ullmann s Encyclopedia of Industrial Chemistry Wiley VCH doi 10 1002 14356007 a02 099 ISBN 978 3527306732 Retrieved from https en wikipedia org w index php title Glycin amp oldid 1024363015, wikipedia, wiki, book, books, library,
