glycin

1. (organic chemistry) A phenolic derivative of glycine, N-(4-hydroxyphenyl)glycine, used as a photographic developer.Examples: "Glycin is a versatile paper developer that produces a strong, deep black on bromide papers and brown to sepia tones on warm-tone chloride and chlorobromide papers."; "Glycin immersed in LN₂ formed an amorphous product. Upon heating to –65 °C an unidentified crystalline phase of glycin was observed, which transformed at ≈ 55 °C to 2-glycin."; "Glycin developers are non-staining and have exceptionally good keeping properties, but are too slow in action for general use."countableuncountable