Alum Powder For Marbling

Also sometimes referred to as potassium aluminum sulfate.

Alum powder for marbling.

Without it the marbling will be faint and blurry. Marbling paper in the ebru turkish style requir. The reasons behind this i have not been able to find out but it. Alum or potassium aluminum sulfate is a chemical often used as a food preservative.

Alum aluminum sulphate every sheet of paper to be marbled must be coated with alum. Dissolve 2 teaspoons alum into 1 gallon of water to make a solution for fabric to be marbled. 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. The alum helps the pigments used in marbling to adhere to the paper.

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. Mix 1 tablespoon of the powdery alum per one cup of water and then thoroughly wet the surface of your paper. Alum in powder left and lump right form. Without a mordant the pigments will slide off the paper.

It ensures that designs transfer clearly to fabric or paper surfaces. Alum safety depends on multiple factors. 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 is sold in a dry crystal form and is soluble in water.

Buy pure aluminum sulfate from an art supply store or online. Alum is the third most important substance in marbling after the gall and the size. A white crystalline compound used in solution for coating paper prior to marbling for setting dyes on fabrics and other applications. Sodium aluminum sulfate is a type of alum that is used in commercial baking powder.

Alum is a mordant meaning it causes color to set on the paper. 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. 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. 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. Marbling on tragacanth does not requore alum but the paper must be dampened slighly to accept the colour. You may apply the alum with a brush sponge or a spray bottle. It forms cubic or octahedral crystals that are.