Description
This is a description of a permanent green light 14ml tube of gouache paint. The colour is 483 and the series number is 2. The chemical description is Arylamide yellow, Chlorinated copper phthalocyanine. The colour index name is PY3, PG7 and the colour index number is 11710, 74260. The permanence rating is B and the ASTM lightfastness rating is I. The transparency/opacity is SO.
Colour number/code: 483
Series number: 2
Chemical Description: Arylamide yellow, Chlorinated copper phthalocyanine
Colour index name: PY3, PG7
Colour index number: 11710, 74260
Permanence rating: B
ASTM Lightfastness Rating: I
Transparency/
Opacity: SO
Good quality gouache colour is a combination of pigment and gum arabic. Gum arabic is the binder that holds the pigment, giving it that perfect creamy 'flowing' consistency. (NB some cheaper brands may have chalk added to the pigment which in turn effects the 'flow and the brilliance of colour'). As a result of the high level of pigmentation Winsor & Newton Designers Gouache dries to a matt finish. This reduces the reflection when photographing the work.
Every colour within the range has an individual formulation to take advantage of each and every pigment characteristic and ensure tube stability.
One of the natural attributes of gum arabic - the binder used in Designers Gouache is that it is quick drying. This faster drying allows quick working techniques and preliminary sketching to be done. Also as with water colour, work can be finished quickly and as a result travelling with work is made much easier.