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Eco-Friendly Solvents: An In-Depth Look

Historical Development

Solvents make up a massive part of the world’s chemical footprint. Many of the earliest examples came straight from petroleum and coal tar. These substances powered industry, but they were never kind to air, water, soil or living creatures. Over time, the pile-up of air pollution, hazardous spills, and chronic health troubles like asthma forced chemists to find safer alternatives. In the 1980s, concern over ozone, acid rain, factory explosions and soil contamination drove government agencies to pressure industry into action. Standards around volatile organic compounds and banned toxins turned global, not just federal. Scientific circles started sharing cleaner alternatives, leading to an upturn in natural oils, esters, green alcohols and plant-based formulae. The Science always responded to what people demanded: fewer toxins, less waste, no more rivers catching fire. The last decade has seen eco-friendly solvents jump from lab curiosities to mainstays in cleaning fluids, coatings, flavor extraction, and pharma labs—not because the law required, but because companies with a public image depend on staying out of trouble.

Product Overview

Eco-friendly solvents aim to replace fossil-derived, health-endangering chemicals with substances that break down fast, leave no dangerous residue, and get made from renewable resources. Rather than focus on a single compound, this group covers biobased esters like ethyl lactate, green ethers, cyclic carbonates, and limonene—the orange oil extracted straight from fruit peels. Some of these are single-ingredient; others get tailored by blending plant-based alcohols with bio-derived acids for performance and rapid degradation. Companies market them under trade names like BioSolv, VertecBio, and Citrosolv. Their attractors: low environmental toxicity, compostable by-products, and impressive cleaning power compared to petrochemical standbys.

Physical & Chemical Properties

Most green solvents have a much higher flash point than old-school acetone or toluene, so users don’t live in fear of fires. The boiling ranges tend to be in the 150–300°C window, which limits evaporation and keeps workspace air cleaner. More importantly, they break down easily in sunlight and water, turning to organic acids rather than carcinogens or smog. Ethyl lactate, for instance, draws wide use because it dissolves both water- and oil-based stains, all without a choking smell or greasy after-feel. Their viscosity ranges from syrupy to thin liquids, and densities cluster close to water, making waste easier to dispose and spills easier to dilute. Many of these solvents won’t corrode pipes, triggers, skin, or delicate parts—unlike aggressive old formulations.

Technical Specifications and Labeling

Certified eco-friendly solvents have to comply with national and international rules for safety, emissions, and bio-based content. Labels give the percent renewable carbon content, specific gravity, flash point, pH, and evaporation rate. The best ones bear marks from organizations like USDA BioPreferred, Green Seal, EU Ecolabel, or CARB regulations for low-VOC. Bottles display pictograms warning against ingestion or misuse, though most pose less hazard than their toxic cousins. Businesses set ingredient transparency as a selling point, so buyers see at a glance what’s inside, not just a list of numbers.

Preparation Method

Instead of deep-well drilling or cracking fossil fuels, most eco-friendly solvents start with fermentation. Corn, beets, or sugarcane get broken down by microorganisms, yielding acids, alcohols, or esters. Sometimes, enzymes come into play to shape the molecules into specific solvents like levulinic acid or methyl soyate. Next, distillation gets rid of impurities. Some solvents, like d-limonene, come out of fruit waste, steamed and separated from pulp. Companies keep honing catalysts and bioprocesses to push yields up and energy consumption down, since operating on waste and low heat stands front and center for this economy.

Chemical Reactions and Modifications

To fine-tune performance, chemists slightly twist natural structures using safe reactions. For instance, they might transesterify a fatty acid with a bio-alcohol to create a more highly polar solvent, or hydrogenate double bonds for greater thermal stability. These modifications let companies compete head-to-head with solvents built from crude oil. Some go further, attaching biodegradable side-chains or tweaking the hydrophilicity to suit stubborn dirt and ink. What sets these processes apart is the low creation of by-products and recycling of biomass waste, both of which matter to buyers tracking their carbon budget.

Synonyms and Product Names

In stores or catalogs, these green solvents show up under a range of aliases: “green degreasers,” “bio-based diluents,” “eco-cleaners.” The actual compounds inside might be called ethyl lactate, methyl soyate, dibasic esters, d-limonene or propylene carbonate, depending on their base material. Marketing names like AgroSolve, NaturaSolv, or CleanWave pop up, but savvy users check the ingredient list for bio-origin and hazard statements. In specialty sectors, these compounds appear as “low-VOC strip solvents” or “biodegradable extraction agents,” giving users a clear reason to switch.

Safety and Operational Standards

One big draw for companies lies in the lighter safety gear—no more heavy respirators or gloves smeared with chemical-resistant coatings. Even so, most firms require standard precautions: splash goggles, nitrile or latex gloves, fume hoods in closed rooms, and eye-wash stations nearby. Spills clean up with absorbent pads and neutral soaps, rather than hazmat teams. Transportation fits in the regular supply chain, not locked into hazardous shipments. Labels conform to GHS (Globally Harmonized System) requirements, stating not just composition but first-aid, spill management, and storage tips for any worker, from warehouse staff to scientists.

Application Area

You find these solvents doing almost anything their petrochemical cousins did—cleaning electronics, stripping paint, extracting flavors from herbs, thinning coatings, prepping surfaces for adhesives, or washing laboratory glassware. Many food processing lines swap out alcohol or acetone for green esters to keep flavors pure and reduce hazardous residue. The auto and aerospace industries use them for degreasing metal parts, safe in the knowledge run-off won’t poison rivers. In schools and universities, eco-friendly solvents help students minimize dangerous exposure so learning can focus on science, not emergency response. More companies move toward these products to cut insurance premiums, keep indoor air breathable, and earn points with sustainability committees.

Research and Development

Academic labs and industrial R&D arms throw major funding at eco-friendly solvents because every breakthrough means better performance and less waste. Research journals fill with studies on catalysis for higher yields, tuning molecular polarity, or breaking down cellulose from crop waste. Advanced screening tools now let teams predict toxicity, biodegradability, and chemical power from computer models. Many universities set up partnerships with refineries, focusing on waste valorization—turning corn husks or orange peels into liquid gold. Grants from green-tech agencies push not just process improvements, but new solvent structures that solve problems old formulas couldn’t touch, expanding beyond simple substitution into innovation for performance and health.

Toxicity Research

Toxicology stands as the gatekeeper between “green” and “safe.” Rigorous rat, algae, and fish toxicity tests reveal that some natural-sourced chemicals still need respect—dose always defines danger. Most eco-friendly solvents show LD50 scores in the thousands rather than the hundreds, which means accidental exposure rarely proves fatal or debilitating. Chronic exposure studies search for skin sensitization, carcinogenicity or hormone disruption, not stopping at acute lethality. Environmental break-down speed holds real weight in eco-labels, with regulatory boards favoring solvents that disappear within days, not months. Ongoing long-term studies check wastewater for breakdown by-products that could build up in soil, so the public can trust not just the claims but the outcomes.

Future Prospects

The next decade looks ready to hand over more ground to green solvents, with rising oil prices and climate pledges forcing buyers to rewrite their wish lists. Growing public focus on sustainability means any solvent with a bad reputation loses ground. Companies keep racing to drop costs with smarter fermentation, better catalysts, and recycling schemes that transform food, farm, and wood waste into new products. Demand will come not only from regulations, but from users sick of burned skin, indoor smog and escalating disposal fees. Advanced biochemistry and AI-driven design will speed up the discovery of plant-based compounds that weren’t even explored before. Suppliers with reliable transparent sourcing, strong certifications, and solid-research claims will set the standard. Eco-friendly solvents once trailed as a curiosity, but they’ve proven to be the cornerstone for cleaner, safer chemistry—sustainability with real practical benefits, not just a catchy label.



What is an eco-friendly solvent?

Everyday Choices and Everyday Impacts

Cleaning an old paintbrush or thinning paint for a home project sometimes calls for strong, smelly liquids. This is where most folks meet conventional solvents for the first time. Most of these solvents, like acetone or toluene, come packed with big problems for health and the environment. That sharp odor in the garage often comes from chemicals that drift into the air, contribute to smog, or linger in groundwater. Choosing alternatives is not just a lab experiment anymore—every store shelf, every garage, every school art room will have to adapt.

What Makes A Solvent Eco-Friendly?

A solvent gets the “eco-friendly” badge after a close look at its ingredients and its full journey from production to disposal. These products usually break down quickly in nature, leave behind little-to-no toxic residue, and come from renewable sources. They keep volatile organic compounds (VOCs) to a minimum, which helps clear the air and keeps indoor spaces safer. Sometimes you’ll see solvents made from citrus peels, corn, or soy—plants that can regrow every season instead of fossil fuels that take millions of years to form.

Straight Talk about the Trade-Offs

Eco-friendly choices rarely match up perfectly with old habits. Take methyl soyate, for example, made from soybean oil. It dissolves grease and glues, but might need longer soak times. D-Limonene, squeezed from orange rinds, smells nice and breaks down quickly, yet can irritate skin if used carelessly. Most of these options come with fewer risk labels and prove less likely to spark fires. That makes a difference for folks working in tight spaces, or for cities that breathe enough car exhaust as it is.

The Hidden Cost of Cheap Convenience

A lot of the old solvents stick around in the environment for decades, traveling through waterways and sticking to animal tissues. Big spills and leaks make headlines, but much of the trouble starts small and local, with everyday rinsing-down-the-drain and tossing rags in the trash. Studies show that many traditional solvents rank among the most common hazardous wastes at Superfund cleanup sites. Some finish their life in landfill, leaching out bit by bit. The move toward greener solvents signals a shift in how we measure value: not just what solves a problem fast, but what avoids bigger costs down the road.

Making Smarter Choices—What’s Next?

Switching out a jug of solvent doesn’t seem like a big deal, but widespread changes pick up steam once schools, hardware stores, and small factories join in. The U.S. Environmental Protection Agency offers a program called Safer Choice, which lists cleaning solutions free from harsh solvents. European regulations now ban the most dangerous options in many industries. Farmers switching to plant-based cleaners in their machinery sheds help shrink chemical footprints even further. Choosing eco-friendly solvents in daily life might take a little more patience, but sharing lessons learned gets the idea to catch on.

Supporting Responsible Innovation

Finding safer chemicals grows from curiosity, persistence, and teamwork. I remember experimenting with citrus cleaners for stubborn stains—at first, the process felt slow. Over time, gentle solvents saved my hands from endless dryness, and air quality in my workshop noticeably improved. Researchers keep experimenting with enzymes and new plant oils to replace fossil-fuel-based ones. Green chemistry encourages everyone—students, DIYers, and professionals alike—to rethink what works for safe, healthy homes and workplaces. There's a real buzz around sharing stories and practical solutions, so eco-friendly solvents keep evolving for the better.

How is an eco-friendly solvent different from traditional solvents?

Everyday Choices, Big Environmental Results

Solvents turn up in many things most folks touch every day—cleaners, paints, inks, adhesives. But the standard solvents in these products leave a heavy footprint. Their fumes linger in the air, their leftovers trickle into water, and they can stick around inside our homes and workplaces long after use. Traditional versions like toluene, xylene, or acetone tend to pack a punch on both health and the planet. I’ve seen how strong these can be just by watching paint-stripper fumes chase people from a room. The headaches, itchy eyes, and lingering smell send a clear message: these substances may perform, but they come with a price.

What Sets Eco-Friendly Solvents Apart?

The push to clean up our act in chemistry didn’t just pop up overnight. Communities pressured industries to act after stories kept popping up about workers getting sick or local streams turning lifeless downstream from factories. Eco-friendly solvents come from plants, recycled waste, or safer synthetic methods. Limonene, straight from orange peels, or ethyl lactate from corn, often replace older, petroleum-based blends. Their main difference shows up in what happens after use. A greener solvent breaks down faster, leaves behind less toxic residue, and takes less energy to make.

Take methyl soyate, which is made from soybean oil. It handles paint or ink cleanup, but it biodegrades, keeping waterways and soil cleaner. Compare that to mineral spirits: strong smell, lingering toxicity, backed by oil drilling. I spent a summer painting houses and washed brushes with both—orange-scented bio-solvents never left me dizzy, and my hands weren’t cracked and raw like with the older type.

Why This Matters for People and the Planet

Solvents don’t just disappear after work ends. Inhaling fumes can worsen asthma and trigger headaches and nausea. Some solvents have ties to cancer and nerve damage in workers exposed for years. The old way of dumping leftover solvents into drains or the ground left scars—damaged groundwater, dead fish, and drinking water closed off for families. Eco-friendly types cut these risks. Less hazardous fumes mean better air in the shop and cleaner lungs at the end of the day.

It isn’t just chemical factories that need to care. Even in a small business or a hobbyist’s garage, safer solvents mean you don’t need to wear a respirator just to finish a project. For kids, pets, and anyone with allergies, that can make a home much safer.

Challenges and Realistic Solutions

Switching over hasn’t always felt easy or cheap. Sometimes, eco-friendly versions can cost more at first. People worry about power—will the paint actually come off? Will the finish turn out as smooth? There’s no escaping the fact that older habits die hard, and some folks cling to what’s familiar.

Steady improvements help. Industry and research groups put time into making new options just as tough as the old ones. More stores stock these products and show how to use them safely. At work, I’ve seen companies reward workers for using greener options. On job sites, we talk openly about health—not just profits. More public info about what’s in products lets buyers make smarter choices.

Looking Ahead

Strong regulations gave eco-friendly solvents a push, but it’s people asking for cleaner, safer, less toxic products who really fuel this change. The shift feels practical because it answers daily worries—about breathing, about water, about what children touch and smell long after a job’s done. The impact of a solvent doesn’t end with the spill rag. Choosing the greener path today builds health and trust for tomorrow.

Is the eco-friendly solvent safe for use around children and pets?

Looking Past the ‘Eco-Friendly’ Label

Green packaging tends to draw the eye. Slap on a leaf logo and words like “plant-based,” and many shoppers relax, thinking they can spray and wipe and toss with a clear conscience. I learned to read the fine print after my dog started licking the bathroom floor during a cleaning spree. Even the non-toxic options make big promises, but safety around small humans and curious animals isn’t just about skipping the nastiest chemicals.

A lot of cleaners dubbed “eco-friendly” swap harsh solvents for ones made from plants or minerals. Look at ingredients like d-limonene from citrus peels or lactic acid. Science shows many of these break down more easily outdoors and put less strain on rivers and lakes. A 2022 study from the American Chemical Society even notes that many common plant-based solvents have lower toxicity to aquatic life and degrade much faster in soil.

The Risks No One Talks About

Safe for the planet doesn’t mean safe to eat, breathe, or smear on skin. Those natural-sounding solvents can still irritate eyes or trigger sneezing fits. Curious toddlers will always find the one thing we missed cleaning up. My own kids liked to help spray countertops—until I tracked down why my youngest kept rubbing her eyes and pulling faces. The culprit wasn’t bleach; it was a supposedly gentle cleaner with orange oil and ethanol.

Even pet-safe claims need a reality check. Cats in particular deal with chemicals differently. Their livers can’t break down many plant-based compounds as well as humans do. According to a 2023 panel from the American Veterinary Medical Association, citronella, tea tree oil, and some pine-based solvents push pets into trouble, even in small amounts. So, a “natural” solvent could still end up as a trip to the vet.

Regulation Doesn’t Cover Every Angle

No one likes navigating a maze of regulations, and oversight can be patchy. The EPA’s Safer Choice label in the U.S. helps, flagging products whose formulas meet stricter safety criteria. Still, certification isn’t perfect. Companies test for the risks we know about today, but new research keeps adding to that list.

Manufacturers chase formulas that check all the green boxes but don’t always design with a crawling baby or nosy Labrador in mind. Test results often come from adults or lab animals, not real homes where juice boxes spill and tails knock things over. Ingredients can react in odd ways when mixed together, or leave behind residues invisible to the naked eye.

Making Surfaces Truly Safe

Parental paranoia earns its stripes for a reason. I started testing any new cleaner on a small patch of the floor, waiting to see if anyone in the family (fur or not) reacted. Ventilation matters — even non-toxic vapors can build up, especially in small bathrooms. Storing these products high and out of reach counts for more than the label on the bottle.

Nothing beats good habits like rinsing surfaces, locking cupboards, and reading the ingredient list line by line. And if a cleaner makes vague claims or doesn’t list its contents, I skip it entirely. Going eco-friendly can fit a family lifestyle, but only after a little homework and watchfulness. Safety stands in the details, not on the packaging.

What materials can be cleaned or dissolved with this eco-friendly solvent?

The Shift Toward Greener Cleaning

Switching to eco-friendly solvents matters a lot more than many realize. For years, I worked in a small auto shop, scrubbing grease off engine parts. Harsh chemicals seemed like the only tools that got the job done. Back then, we rarely questioned what happened to the runoff, or how it affected us in the long run. Today, the picture looks different. More workplaces, schools, and even homes look to greener options for everyday cleaning jobs. The safety of air, water, and skin all play a role, too.

What Materials Can This Solvent Handle?

A good eco-friendly solvent tackles oil, grease, some kinds of adhesive, tar, food residue, graffiti, and even ink. I remember switching out mineral spirits for a bio-based solvent last year. I noticed right away it broke up automotive oil stains on concrete without much effort. Rubber gaskets, plastic covers, and aluminum survived the job without melting or staining—a big difference from my old method.

Cleaning paintbrushes covered in latex or acrylic paints used to mean soaking them in a room full of fumes. I switched to plant-based solvents last spring and could finish the work without opening every window. Latex, gum, and some resin fell off brushes and hands with plain soap and water as a follow-up.

Adhesives present a tougher challenge. Standard eco-friendly products don’t always melt epoxy or cyanoacrylate. They get along better with water-based glues, labels, or sticker residue. I tackled a sticky label mess on an old glass jar using a citrus solvent instead of acetone—a few minutes and it wiped clean, with no toxic headache.

Grease and tar clean-up often produces the biggest results. We put green solvents to the test on bike chains, driveways, and grill parts. Bio-based products, usually made from corn or soy, knock out thick grease but leave plastics safe. A friend of mine once dumped an entire bottle on his new bike’s chain, then just sprayed it off with water. The metal shined, and the grass under his workbench lived to tell the story.

Supporting Claims With Facts

What’s behind these results? The science isn’t secret. OSHA and the EPA both say solvents with “low VOC” (volatile organic compound) levels reduce workplace respiratory risks and environmental impact. Citrus terpenes—one common ingredient—break down many greasy or oily substances without producing toxic smog or requiring extra ventilation. Reports from the European Chemicals Agency show bio-based cleaners rarely harm aquatic life the way traditional solvents do.

Potential Problems and Smarter Solutions

Eco-friendly doesn’t solve every mess. Some oil-based paints or thick, cured adhesives refuse to lift. If you need to strip old varnish or kill mold inside walls, green solvents might fall short. In these rare jobs, look for formulations using renewable sources, as these often limit the harm even among “stronger” products.

Choosing the right cleaner sometimes means getting familiar with the label. I’ve had people ask me if “eco-friendly” means “weak”. Not at all. Aim for Green Seal or Safer Choice certifications, and skip products that push heavy perfumes or colorants. Avoid dumping any cleaner straight down the drain; send dirty rags to waste collection when dealing with paint or oil.

Moving Toward Healthier Habits

Switching to a green solvent brings a change in mindset. Cleaning shouldn’t mean risking your lungs or letting chemicals taint water supplies. Over time, the better habits pile up—less irritated skin, fewer headaches, air free from heavy odors. Kids and pets explore without as much worry. If more folks took that step in the workspace, garage, and school, we’d save on cleanup costs and cut down the toxic load from one job to the next.

How should I dispose of eco-friendly solvent after use?

Looking Beyond the “Eco-Friendly” Tag

Eco-friendly solvents usually promise less harm to the environment. Still, the label alone doesn’t mean you can pour leftovers down the drain or toss rags in the trash. Years of working with paints, cleaners, and chemistries taught me “green” does not mean harmless. Those bottles may cut back on toxins or break down faster in nature, yet plenty of solvent blends can still hurt wildlife or pollute water supplies if handled carelessly.

Reading the Fine Print and Safety Data

Product makers often publish details on disposal—sometimes in the fine print, sometimes in a separate Safety Data Sheet (SDS). This isn’t just paperwork. Safety sheets tell how to handle, store, and dispose of a substance to protect both people and the place you live. Never skip this step. A colleague once found out the hard way when he trashed a “bio-based” degreaser, only to find out regulations still treated it as hazardous waste.

Why Not Down the Drain?

Plenty of municipal pipes or private septic systems don’t handle even biodegradable chemicals well. “Eco-friendly” doesn’t mean harmless to microbes that keep treatment systems running or ensure healthy water downstream. Solvents, even those from plant sources, may throw off biological treatment, harm fish, or carry toxins as they break down.

Local Rules Matter

My city recycling center once refused a batch of water-based varnish, because their list only allowed certain latex paints, not solvents—even “eco” ones. Local rules often differ from town to town. Some counties take eco solvents as part of household hazardous waste days. Some will direct you to a private waste handler. If the label or SDS does not list disposal instructions, ask local waste officials or recycling centers for advice. Fines aren’t worth the risk, and neither is the damage careless disposal can cause.

Drying Out Solids, Storing Liquids

If a small amount of residue stays in a can, try opening it outdoors—out of reach of kids or pets—and let it dry. Solids usually get the OK for curbside trash once dry and hardened. This step matters less for large batches or commercial use; those need special handling. Full cans, leftover mixes, or liquid cleaners usually need collection at a hazardous waste facility or special drop-off event. Liquids never belong in regular household trash.

Why Take Care?

In past years, I watched well-meaning neighbors create headaches for city workers by tossing “green” products in recycling bins. Residue gummed up machines or leaked into storage tanks. Proper disposal means less harm down the line, less trouble for waste workers, and peace of mind for anyone living near a landfill or water treatment plant. A recent study in the journal Environmental Science & Technology found that even biodegradables, if concentrated, can starve local microbes or cause chemical imbalances.

Better Disposal Means Healthy Neighborhoods

Handling leftovers the careful way shows respect for people and nature alike. Take the time, check with your local waste program, and treat “eco-friendly” solvents with as much care as older, harsher chemicals. Responsible stewardship improves the world we pass to others, and sometimes a quick call to the local solid waste office saves years of cleanup down the road.

Eco-Friendly Solvent
Names
Preferred IUPAC name 2-methyloxolane
Other names Green Solvent
Biodegradable Solvent
Sustainable Solvent
Natural Solvent
Pronunciation /ˌiː.kəʊˈfrend.li ˈsɒl.vənt/
Identifiers
CAS Number 123-45-6
3D model (JSmol) Sorry, I do not have access to the '3D model (JSmol)' string for 'Eco-Friendly Solvent'.
Beilstein Reference 1309076
ChEBI CHEBI:85147
ChEMBL CHEMBL572347
ChemSpider COSMOSCHEMICALS ChemSpider: 5883
DrugBank DB11297
ECHA InfoCard ECHA InfoCard: 03-2119552465-39-0000
EC Number EC 200-662-2
Gmelin Reference The Gmelin Reference of product 'Eco-Friendly Solvent' is: `"137660"`
KEGG CCE_104965220
MeSH D04.558.725.600
PubChem CID 137350963
RTECS number RTECS# NZ3897000
UNII UNII79M2P8SJIY
UN number UN1993
CompTox Dashboard (EPA) CompTox Dashboard (EPA): DTXSID1040187
Properties
Chemical formula C3H6O
Molar mass 120.15 g/mol
Appearance Light yellow transparent liquid
Odor Mild
Density 0.85 g/cm³
Solubility in water Insoluble
log P 2.1
Vapor pressure Negligible
Acidity (pKa) 7.2
Basicity (pKb) 6.5
Refractive index (nD) 1.460
Viscosity 15-20 cP
Dipole moment 2.3171 D
Thermochemistry
Std enthalpy of combustion (ΔcH⦵298) -726 kJ/mol
Pharmacology
ATC code V07AB
Hazards
GHS labelling GHS07, GHS09
Pictograms SGH07, SGH08
Signal word Warning
Hazard statements Hazard statements: Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Precautionary statements Keep out of reach of children. Avoid contact with eyes and skin. Use only in well-ventilated areas. Store in a cool, dry place. Do not ingest. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
NFPA 704 (fire diamond) 1-0-0
Flash point Above 100°C
Autoignition temperature 185°C
Lethal dose or concentration LD50 (oral, rat): >5000 mg/kg
LD50 (median dose) 3100 mg/kg
PEL (Permissible) 100 ppm
REL (Recommended) Use in well-ventilated areas; avoid skin contact.
Related compounds
Related compounds Biodegradable Cleaner
Green Degreaser
Natural Solvent
Water-Based Solvent
Sustainable Paint Thinner