Goodbye to Turpentine
by Robert Maynord
by Robert Maynord
It is common for an art student to show up
for the first day of painting class and discover
that other students in the room will be brushing
with various solvents such as turpentine,
mineral spirits, and odorless mineral spirits (OMS).
In the last painting class I attended,
two students left on the first night because of the fumes.
These solvents are assumed to be part of the artistic process, with painters working in rooms without ventilation, using materials that can cause serious reactions -- materials that are illegal in schools and restricted in the general workplace. Further, the art stores are largely unaware of these problems, not selling protective masks, gloves and coats that would normally be required in the workplace.
Just this past week, I was attending an art fair, and had the opportunity to converse with the featured artist. She was using watercolors and acrylics in her work, but confessed her real desire was to work with oil paint. She had actually worked with oils in the past, but gave them up because she couldn't stand the fumes. Unfortunately this artist, like many others, didn't know that oil paint can be one of the safest, least toxic, least polluting and most natural of all art media!
Many artists today link oil painting with the use of turpentine, commonly called "turps". Turps, or turpentine, is the strong smell that is associated with an oil painter's studio. But turpentine causes problems for many people. As OSHA notes, "turpentine is a skin, eye, mucous membrane, and upper respiratory tract irritant in humans.
It may also cause skin sensitization and central nervous system, gastrointestinal, and urinary tract effects." Often, artists will substitute odor-less mineral spirits for turpentine on the assumption that since the smell is not so strong it might be safer to use. However, turpentine, mineral spirits, and odorless mineral spirits are all regulated by several federal safety agencies. Basically, you shouldn't inhale the fumes of any of them.
There are actually many historical forms of turpentine, all made from the resin of trees. Perhaps the oldest, dating from the 14th century, was made from the terebinth tree, a member of the cashew family. Later, various turpentines were made from pine and fir trees, including Canada balsam, made from the balsam fir, and Venice turpentine, made from the western larch tree. Artists valued these forms of turpentine for their resinous sap, not for their use as a solvent.
Today, what we call "turpentine" is made from distillation of the sap of pine trees, and as such it is sometimes added to cleaning products, or used as a substitute for gasoline. Turpentine solvent, sometimes called "spirits", has the opposite effect in painting from the earlier turpentines used by historical painters, thinning the paint rather than adding clarity and brilliance.
In contrast to turpentine solvent, non-toxic linseed oil has been used in painting for centuries. Linseed-flax oil has a mild odor, and in its purest form is sold in health food stores as a nutritional supplement. The odor of linseed-flax oil disappears quickly, and is not offensive. Historically, artists have also used other oils such as oil of spike lavender, which is not toxic and has a strong, but wonderful smell.
Spike Lavender was commonly used during the time of Rembrandt, as well as Rubens, and at least as far back as the Flemish painters such as Hubert van Eyck. During Rembrandt's time it was even used by cabinet makers when they created varnishes for their wood. Oil of spike lavender works as a solvent, but also as a diluent in the paint. It is used to loosen up paint, as well as to thin paint for under paintings, and it helps to smooth out the brush stroke. But very few artists know about it today.
Rembrandt: "The Artist in His Studio"
During the Industrial Revolution, turpentine was produced for much less cost than spike lavender, and artists begin to use it as a cheap alternative. Later, mineral spirits was introduced as a dry-cleaning chemical, and then artists and commercial painters begin to use it. Since that time, research has shown that mineral spirits, marketed as less toxic than turpentine, actually causes chronic toxic encephalopathy with professional painters.
In fact, the disease is called Chronic Painters syndrome. However, spike lavender does not have these problems. Artists have used it for centuries. Further, mineral spirits will not dissolve dammar crystals when making various types of varnish for painting, but Spike Lavender will! Thus Spike Lavender is much closer to turpentine than mineral spirits in performance, without the drawbacks.
A Section from the "Ghent Altarpiece"
It is possible to avoid turpentine and mineral spirits entirely, and create totally solid archival paintings. As we become more aware of environmental and health issues, more artists will no doubt choose this approach, saying goodbye to the fumes.
ROBERT MAYNORD's PERSONAL INTEREST:
Five years ago, I was experimenting with various oil painting mediums, including some that had mineral spirits as part of the ingredients. One of the extremely popular mediums I tried contained naphtha (a petroleum distillate sometimes referred to as OMS, odorless mineral spirits, or Stoddard solvent) as well as 2-butanone oxime, a chemical used for model cement, adhesives, and plastics.
Several of my artist friends had warehouse studios where they painted, but since I have children I wanted to paint at home, where I could be closer to them. The problem was that my family strongly disliked the smell of my medium, complaining of headaches. Likewise, I found that I couldn't handle the smell of the medium, and started having headaches.
Looking for a solution that would allow me to paint, I decided to throw out the suspicious painting medium, and just use linseed oil. This worked reasonably well, but the linseed oil had a thick viscosity which, when mixed with tube paint, made for a paint well suited for general use but didn't have the flow I wanted, especially for detail and special effects.
Further, the slow drying time for linseed oil made it less useful for doing initial washes on the canvas. I tried linseed oil for cleaning brushes between colours, but it was still somewhat thick. It was then I realized that artists use the less viscous solvents such as turpentine and mineral spirits for a reason - but how could I avoid the problems?
In my continuing search for a way to paint at home, I came across Oil of Spike Lavender, mentioned in old painting manuals, but also discussed on various blogs. I ordered a small bottle out of curiosity – I figured the price would be worth it, if it would allow me to paint at home. Indeed, it worked as expected, and my family didn't complain of headaches.
The only problem, of course, is that it was extremely expensive. I decided that if I liked the oil so much, I needed to find a source for larger quantities. The small bottles sold by the art materials folks were just too little and too expensive.
So after months of research I made contact with someone who referred me to an importer where I could purchase larger quantities (in huge drums) at wholesale. It cost a lot, but I found there were other artists who could use the oil, and suddenly I was a supplier!
A shop for alternative art materials, solvents and painting mediums
It should be possible to do art in the studio and home without worrying about toxic materials. Early on, I experimented with "odorless" thinners, and various painting mediums and found that I reacted to them.
'The Art Treehouse features several items of interest to the "less-toxic" painter. Besides Oil of Spike Lavender, there is a Bio based Artist Solvent that is extremely enviro-friendly. It took six months of testing to figure out the right way of balancing solvency with evaporation rate.
There is no lead, no cobalt, and no cadmium in anything we sell - including our paints. We sell no turpentine, no OMS, and no mineral spirits. Oil of Spike Lavender will dissolve resins (and OMS will not), so we have Copal-Spike and Dammar-Spike mediums available. We even have some rare gadgets such as The Artist Mouthpiece, for artists who paint with their mouth. More interesting items are on the way!'
Spike Lavender Oil Safety
The Art Treehouse commissioned an external safety evaluation of Spike Lavender Oil, what follows is an excerpt from the Executive Summary:
'ChronicHealth Effects Assessmentof Spike LavenderOil'
'Evidential data are supportive that Spike LavenderOil would not cause a chronic health effect with
acute or prolonged dermal or inhalation exposure. The potential for idiosyncratic allergenicity may exist
and should be forewarned, but this effect would be readily identified and reversible. It is not proposed
as a label caution. Adverse effects during pregnancy are unknown but assumed minimal given the
history of product use. It is not proposed as a label caution.'
Robert Maynord on oil glazes
and new bio-based thinners
Parts of this essay first appeared in the Huffington Post
(Arts and Culture Section) on 30 Sept 2013.
Reprint by kind permission.
Copyright for this page, 2013: Robert Maynord (nontoxicprint)
Images: 'Rembrandt', 'Mona Lisa', 'Pollock/Namuth': Wikipedia / Creative Commons
other Images: Robert Maynord / The Art Treehouse
The Art Treehouse
The Art of Robert Maynord
COMING FULL CIRCLE FOR ARTISTS
Robert Maynord, 2017:
"Globally we are coming full circle, returning to biobased materials. In fact, many early
artist materials were based on natural oils, rosins, waxes, gums, polysaccharides, and
other materials. One of the largest global manufacturers of raw paint materials (with
offices in 50 countries) recently commented: Raw material suppliers recognize that oil
and other extracted materials are finite resources... hence the attractiveness of
biobased or biorenewable materials. Now we are coming full circle, returning to
The Art Treehouse Biobased Artist Thinner has been
receiving a great deal of attention recently,
in part because it solves the
problem of toxic fumes for artists teaching
classes and offering workshops. Artists and
teachers are excited to find a thinner that
works so well, and that is not petroleum
based. The term biobased generally refers
to a product that is made, in whole or in
significant part, from renewable agricultural sources
such as plant, animal, and marine
materials. Coming from farms, biobased products
have a distinct advantage in terms
of biodegradability, toxicity, and pollution.
Oil of Spike Lavender, Water-Washed Walnut and Flax Oil, Rosemary Oil, Canada
Balsam, Beeswax, Damar and Copal, and Oil of Clove all fit the definition of biobased
artist materials. Globally, there are many examples of the cultural shift to renewable,
safer resources. Recently, in the Netherlands, artists came together to promote artistic
research at the Urecht Science Park.
They are working to provide innovative
perspectives about environmental harm. Sustainability is their central focus, attracting
a great deal of discussion and research. Their Zero Footprint Campus is made up of
several artistic projects and a team dedicated to growing the impact of the project.
Reebok will bring their plant based footwear to the market later this year.
Reebok’s philosophy is to ‘Be More Human,’ and sustainability is a core part of that belief. The
car company, Audi, has announced their new clear coat is biobased, and Mazda, has
successfully launched a new bioplastic which will mean that its cars no longer need to
be painted with toxic chemicals. Scientific research is rapidly developing biobased
solutions to creative problems. Artists will benefit from the less-toxic materials and
greater performance characteristics. Society will benefit from the sustainable and
renewable materials for use in classroom and workshops settings. Coming Full
Circle, the world of art will be enriched and renewed – by reclaiming, renewing,
advancing and improving the materials that have been central to art throughout history."
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