Glycin

Glycin[1]
Identifiers
CAS number 122-87-2
PubChem 67149
ChemSpider 60494 YesY
ChEBI CHEBI:55443 YesY
Jmol-3D images Image 1
Properties
Molecular formula C8H9NO3
Molar mass 167.16 g/mol
Melting point

248 °C

 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Glycin, or N-(4-hydroxyphenyl)glycine, is N-substituted p-aminophenol. It is a photographic developing agent used in classic B&W developer solutions.[2] It is a derivative of the amino acid glycine. When fresh, it is typically characterized as thin plates of white or silvery powder, turning brown with age. It is sparingly soluble in water and most organic solvents; it is readily soluble in alkalies and acids.

Glycin is related to 4-aminophenol and Metol. Compared to Metol, glycin has a carboxyl group attached to the methyl group of the Metol. This weakens the reduction potential of the compound and 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 today, primarily because it is expensive and manufactured for specialty applications only. In its dry form, it also has limited shelf life compared to Metol and Phenidone.

Glycin can be synthesized by a number of ways. One method is to react p-aminophenol with chloracetic acid in a solvent and purify glycin.

Other uses of glycin can be found in some procedures of analytical chemistry.

References

  1. ^ Merck Index, 11th Edition, 4771.
  2. ^ Photographic Chemical Descriptions

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Glycin — Gly cin, n. [Gr. glyky s sweet.] (Physiol. Chem.) Same as {Glycocoll}. [1913 Webster] …   The Collaborative International Dictionary of English

  • Glycin — Glycin, photographischer Entwickler, entlieht durch Einführung des Essigsäureesters CH2COOH in das Paramidophenol und hat die Formel C6H4 · (OH) · NH · CH2 · COOH. J.M. Eder …   Lexikon der gesamten Technik

  • Glycin — Glycin, Glykokoll, Aminoessigsäure, Abk. Gly, optisch inaktive, einfachste, in fast allen Proteinen vorkommende Aminosäure mit einem H Atom als Rest; kann aus Serin entstehen sowie durch Transaminierung aus Glyoxylat; wird im Organismus zur… …   Deutsch wörterbuch der biologie

  • Glycin — Strukturformel Allgemeines Name Glycin Andere Namen …   Deutsch Wikipedia

  • Glycin — Gly|cin [griech. glykýs = süß, ↑ in (3)], das; s; Symbol: Gly, G; Syn.: Aminoessigsäure, (veraltet:) Glykokoll: H2N CH2 COOH; farblose, süßlich schmeckende Kristalle, Smp. 233 °C. Glycin ist die einfachste, in Proteinen weit verbreitete… …   Universal-Lexikon

  • glycin — Glycocoll Gly co*coll, n. [Gr. glyky s sweet + ko lla glue.] (Physiol. Chem.) A crystalline, nitrogenous substance, with a sweet taste, formed from hippuric acid by boiling with hydrochloric acid, and present in bile united with cholic acid. It… …   The Collaborative International Dictionary of English

  • Glycin — 1Gly|cin das; s <zu ↑...in> svw. ↑Glykokoll. Glycin 2 2Gly|cin das; s Kunstw.> ein fotografischer Entwickler …   Das große Fremdwörterbuch

  • glycin — gly·cin (glīʹsĭn) also gly·cine ( sēn , sĭn) n. A poisonous crystalline compound, C8H9NO3, used as a photographic developer.   [Probably from glycine.] * * * …   Universalium

  • glycin — noun A phenolic derivative of glycine, N (4 hydroxyphenyl)glycine, used as a photographic developer Syn: photoglycine …   Wiktionary

  • Glycin — Gly|cin 〈n.; Gen.: s; Pl.: unz.; Chemie〉 = Glykokoll; oV …   Lexikalische Deutsches Wörterbuch

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.