#37400
Oak Apples
gallnuts
No ACMI Certification Seals available.
Warnings
WARNING: Exercise care when using dry pigments. Do not eat, drink or smoke. Avoid breathing dust. Use a NIOSH-certified dust respirator. Wash hands immediately after use. If creation of dust is likely, wear protective clothing.
Precautions
Keep out of reach of children.
An oak apple is a mutation of an oak leaf caused by the chemicals injected by the larvae of certain kinds of gall wasp. The reason for the name „oak apple“ is the fact that the galls, which can measure up to five centimetres in diameter (though their diameter is usually around two centimetres), look similar to apples. The variety of oak apples mainly used are excrescences growing on the leaves of the small oak Quercus infectoria, indigenous to Asia Minor and Southern Europe. The best quality Aleppo galls collected in Turkey, known as „blue“ or „green galls“, are hard and heavy and of dark bluish-green or olive green color. They contain up to 70 % of gallotannic acid. If collected after the insects have escaped, the galls are of pale, yellowish-brown color, spongy and lighter in weight. These so-called „white galls“ contain less gallotonic acid than the blue and green galls. Oak apples are mostly used in dyeing and tanning as well as for the production of ink.
- ColorIndex: NBr 6
- Suitability: Dyeing
- Colors: Black, Gray
-
For which application / techniques is Oak Apples suitable?
Oak Apples is suitable for Dyeing -
What color has Oak Apples?
Oak Apples has the colors Gray, Black. -
What Colorindex has Oak Apples?
Oak Apples has the Colorindex NBr 6.