1. COMPOSITION

Natural extract of Yellow Wood in spraydried powder. Colour Index : 75660.

CAS : 519 34 6

EINECS : 208 268 2.

2. PHYSICAL and CHEMICAL PROPERTIES

Aspect : spraydried powder

Colour : orange

Active substance : about 95%

pH (10 g/L solution) : 6.3 +- 1.0

3. CHARACTERISTICS

Ecodye V29 contains two dyeing principles :

- Morin or morol which is little soluble in cold water, chemical composition which classifies it in the group of flavonol plants.

- Maclurin, very soluble in water, chemically constituted of pentahydroxibenzophenone.

Yellow wood extract is mostly known in the textile industry under the name " Old Fustic ". Dyeing on various fibres gives sustained yellow colours. As very natural dyes, colours depend on the mordant used :

4. APPLICATIONS

The precipitation of the dye in acid media, according to the mordant used, forms an insoluble lacquer which is very fast to washing. The processes of dyeing with different mordants (used alone or in combination in order to obtain various colours) are so numerous that they cannot be reported here.

There are two methods for dyeing :

- either the fibre is mordanted by the metallic salt before dyeing
- or the mordant is used after prior dyeing of the fibre.

Yellow Fustic V 29 can be used in the same time than synthetic dyes as shading agent bringing the yellow element in order to modify the final colours.

Technical Data Sheet

Code : ZCV29P

Index : 0

Document PC.073/A