Eco printing may have your head spinning with all the variations! Well, let me introduce another amazing player to this fantastic magical game; Myrobalan. This important tannin based mordant can yield awesome results…
Where does Myrobalan come from?
This mystery dyestuff powder is made from the ground nuts of Terminalia chebula tree. This upright tree has lovely bright yellow flowers and can be found in the forests of diverse regions of Asia & foothills of the himalayas. It also can be found myrobalan extract and also under the name of Harde Powder. It is believed to have some interesting healing properties in traditional Indian medicine. For that reason it did not scare me as many of the other ‘chemicals’ do. ‘And it was easy & inexpensive for me to order it from a local health food supplier and also be fond at some ethnic food stores.
What does Myrobalan do?
This unique myrobalan powder material is both a tannin and a mordant. It is a common dye that will produce nice buttery yellow (20-30% WOF) and provide good mordant for difficult to dye cotton fibre if used before alum at 15-20% WOF; weight of fibre). Since it gives a nice warm yellow it can also be combined with indigo to further add beautiful teal color (single indigo dip).
Scientifically, Myrobalan has some key properties to help with dyeing such as Gallic and Ellagic acid; hydrolysable tannins.
Since I am a hands-on person I tend to learn more by experimenting & doing rather than by reading. For a good foundation I put it through a few tests and observed what it can do. It is interesting how many different outcomes I had.
Understanding the Challenges of Eco printing:
Achieving colours on cotton fabrics in the world of eco printing can be a bit of a challenge depending what species of leaves that you can find or what other natural dyes you add to the mix. This brownish yellow powder dyes a light buff color. Myrobalan also loves iron! Whenever there is any way of the two coming together it creates a nice purplish grey. The depth does depend on the strength of both the Myrobalan and the iron, as usual. I much prefer it to the some of the dirty types of browns that some tannins create with the saddening of iron.
These are examples of a few media including paper and Rayon (considered cellulose fibres). It’s use is not even restricted to the usual rolled bundles of Eco Printing. (watch for future detailed posts) I can also see how stable some dyes are by how much they stain my hands and also my plastic sink; wow did I need to clean!
It is so amazing to see the reaction take place! A cooled tea made from the Harde Powder (myrobalan) has some drops of a weak iron solution (iron sulfate + water) added and immediately the dark greys appear! That is how I do test some of the strength as well. Is there a definite rule? No way…
Shown above are some of my favourite dependable printing leaves, iron blanket and a pre-dye of Myrobalan. I bet I know what you are thinking; so what are the recipe amounts? It depends on a few things? What ‘look’ are after? Do you want subtle tones/low contrast? Or do you want very dark background? As you may know; eco printing has many variables such as leaf species, processing times, fibres, water and strength of iron (to name a few). The more you experiment the more you will start to understand the differences you see (this post has comparisons of methods)
Not sure what method you would like? There are so many ways to use Myrobalan in combination with everything else, especially a rich natural tannin of a certain leaf specie.. I often throw caution to the wind and let it surprise me. Is this not art?!
Using the Myrobalan tea (strong to weak) before printing (if a leaf does not have enough tannin) will create a more ‘resist’ stencil type look (top) if using an iron blanket (bottom) or switch it all around backwards (middle) and get a very different detailed effect. (posts coming soon)
This cotton canvas is pretty heavy weight so the textures are much more pronounced since the thickness of the fibres comes into play. The ferns tend to not have much tannins to print on their own but work well with the Myrobalan to act as a resist for intricacy of shapes. The soft butter yellow use adds a rich design.
So grab yourself some Myrobalan and maybe it can even come in handy for whatever ails you… Happy Printing (watch for future detailed posts)