Alum Powder For Marbling

Alum or potassium aluminum sulfate is a chemical often used as a food preservative.

Alum powder for marbling. Alum aluminum sulphate every sheet of paper to be marbled must be coated with alum. Alum is a powdered presoak used to treat fabric or for marbling. It makes the colours adhere to the paper. Any form of aluminum sulfate could be called alum including toxic versions of the chemical however the type of alum you find used for pickling and in deodorant is potassium alum kal so 4 2 12h 2 o.

Sodium aluminum sulfate is a type of alum that is used in commercial baking powder. Alum is also used with some natural dyes as a mordant. Alum safety depends on multiple factors. Without a mordant the pigments will slide off the paper.

Marbling on tragacanth does not requore alum but the paper must be dampened slighly to accept the colour. Alum is the third most important substance in marbling after the gall and the size. Alum in powder left and lump right form. The reasons behind this i have not been able to find out but it.

Alum is a mordant meaning it causes color to set on the paper. A white crystalline compound used in solution for coating paper prior to marbling for setting dyes on fabrics and other applications. Mix 1 tablespoon of the powdery alum per one cup of water and then thoroughly wet the surface of your paper. You may apply the alum with a brush sponge or a spray bottle.

Marbling paper in the ebru turkish style requir. The alum helps the pigments used in marbling to adhere to the paper. This video demonstrates the recipes and techniques necessary for aluming paper in preparation for marbling. It is sold in a dry crystal form and is soluble in water.

It acts as a color binder or mordant fixing the colors to the paper permanently if alum is not applied to the paper before marbling most of the color will rinse off. Dissolve 2 teaspoons alum into 1 gallon of water to make a solution for fabric to be marbled. Without it the marbling will be faint and blurry. Al 2 so 4 3 k 2 so 4 24h 2 o this product looses 18 h 2 o at 92 5 o c and becomes anhydrous at 200 o c.

It ensures that designs transfer clearly to fabric or paper surfaces. To make enough alum for several dozen sheets of paper stir 1 tbsp 15 ml alum into 1 cups 360 ml warm water until completely dissolved at least two minutes. It forms cubic or octahedral crystals that are. Alum is used in the fabric marbling process as a pre mordant to make marbling paints stick and is also used as one of the safer chemicals to pre mordant fabric in preparation for natural dyeing.