Alum Powder For Marbling

Alum aluminum sulphate every sheet of paper to be marbled must be coated with alum.

Alum powder for marbling.

Alum in powder left and lump right form. Alum or potassium aluminum sulfate is a chemical often used as a food preservative. Alum is a powdered presoak used to treat fabric or for marbling. Marbling on tragacanth does not requore alum but the paper must be dampened slighly to accept the colour.

A white crystalline compound used in solution for coating paper prior to marbling for setting dyes on fabrics and other applications. The reasons behind this i have not been able to find out but it. Alum safety depends on multiple factors. Alum is a mordant meaning it causes color to set on the paper.

Marbling paper in the ebru turkish style requir. 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. Without a mordant the pigments will slide off the paper. It makes the colours adhere to the paper.

You may apply the alum with a brush sponge or a spray bottle. Alum is the third most important substance in marbling after the gall and the size. Without it the marbling will be faint and blurry. Alum is also used with some natural dyes as a mordant.

It ensures that designs transfer clearly to fabric or paper surfaces. It is sold in a dry crystal form and is soluble in water. Dissolve 2 teaspoons alum into 1 gallon of water to make a solution for fabric to be marbled. The alum helps the pigments used in marbling to adhere to the paper.

Also sometimes referred to as potassium aluminum sulfate. 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. This video demonstrates the recipes and techniques necessary for aluming paper in preparation for marbling. 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.

Sodium aluminum sulfate is a type of alum that is used in commercial baking powder. 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 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. You will need to cover your paper with alum in order for the design to transfer from the water to the paper without getting washed away.