Photographers' Formulary 1lbs Glycin (N-)

Photographers' Formulary Glycin (N-Para-Hydroxyphenyl) is Commonly used with para-phenylenediamine in fine-grain formulas; also used in paper developing formulas. Nonstaining, clear working developer; gives fine-grained negatives of a gray black color. Note: Glycin is almost insoluble in water, but it dissolves readily in alkaline solutions, thus it should be added last to any developer formula. It oxidizes very slowly and is very clean working. Glycin is very sensitive to bromide and also to low temperatures. With alkali carbonates it makes slow-working developers, which have good keeping properties and give low contrast. Must not be confused with glycocoll medicinal, sometimes called glycine.