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West Ujimqin Banner, Xilingol League, Inner Mongolia, China
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Craft workers and manufacturers have turned to Jelutong for over a century. This tropical hardwood comes from the Dyera costulata tree, native to the rainforests of Southeast Asia, especially Malaysia and Indonesia. Early in the 20th century, Jelutong’s value grew during the boom of rubber production—the latex tapped from the tree found its way into chewing gum and insulating materials. Over time, loggers realized the wood itself carved smoothly and reliably, so carvers, model-makers, and pattern shops started to rely on it. Lumber exports took off as traditional woodworking and industrial design expanded. The story of Jelutong follows the movement of skilled trades through colonial development, resource conservation changes, and the swing in demand based on synthetic alternatives. In my own experience handling different woods in a shop setting, nothing cuts or sands quite like a well-seasoned Jelutong block; there’s a distinct scent and a lack of splinter that keeps it popular for detail-oriented work.
Jelutong doesn’t shout in any workshop, but its fine, creamy white grain and light weight make it essential for prototyping and sculpting. It shows up in blocks, strips, or more refined boards, depending on its destination. Pattern makers favor roof-dried Jelutong for its carving response and how little it dulls their tools. Despite global environmental restrictions, sustainable plantations now supply the bulk of Jelutong wood, keeping centuries-old carving industries alive. Quality ranges by region and harvesting methods, but compared to denser tropical woods, Jelutong is gentle on hands and tools, meaning less fatigue and less frequent sharpening.
Jelutong’s density rarely climbs above 0.45 g/cm³; it stays in the lightweight class but keeps a tight, close grain structure. This means a clean plane across the surface, no matter the angle. The wood resists splitting and warping, holding its shape after both wet and dry cycles. For chemists, Jelutong brings a high sap content, thanks to its natural latex; that latex stands as a key industrial raw material. The wood’s cell walls absorb finishes well, picking up stains and paints without heavy blotching. Moisture content drops cleanly after kilning, and with proper sealing, Jelutong resists fungal attack better than some other soft, tropical woods.
Commercial Jelutong comes rated by density, moisture content, and sapwood/sap ratio. Most suppliers tag pieces by grade, often referencing source (such as certified plantation). Plantations and countries of export sometimes print QR codes or barcoded stickers to track chain of custody—important for avoiding illegal logging. Finished blocks range from 2-inch to 6-inch thicknesses, and lengths stretch up to several feet. Top-end pattern shops laser-etch batch numbers for traceability, especially for custom or aerospace projects. Each package generally shows recommended storage advice, like limiting direct sunlight and storing in well-ventilated racks to maintain shape.
Harvesters cut Jelutong trees at twenty to thirty years, selecting trunks with low branching to avoid knots. Wood comes to mills quickly, as the sap content demands fast drying to avoid fungal stains. Air-drying trims down moisture; after that, kilns finish the curing. This staged method avoids internal checking—a common disaster in fast-grown tropical hardwoods. Boards receive planing, surfacing, and cutting into standard shapes for sale. Large-scale production relies on integrated supply chains that include latex tapping before felling, extracting resin for gum or chemical use. As a woodworker, I’ve always noticed how freshly planed Jelutong takes on a soft, powdery feel, which holds glue and finish better than almost any synthetic backing board.
Jelutong’s sap, rich in polyisoprene, gives it a rubbery quality. Dehydrogenation and polymerization allow conversion into chewing gum bases and specialty resins. When exposed to oxidizing agents, the sap develops elasticity and stickiness—the kind favored in traditional adhesives and some “natural” plastics. Chemists have experimented with chemical cross-linking to strengthen blocks for advanced modeling, using mild formaldehyde agents to fuse cell walls. Seasoned Jelutong can take up certain fire-retardant and insect-resistant coatings better than denser timbers. With the right reactive agents, grafting functional polymers onto latex provides custom materials for specialized sealants.
Markets list Jelutong under different synonyms, depending on origin: Dyera, Jelutung, Palaquium, and even “Malaysian Gumwood.” Chewing gum and resin packaging often references it as “Gutta Jelutong” or “Dyera latex.” Some importers brand prepared boards as “Artist Jelutong” or “Modelers’ Jelutong,” targeting prototyping and carving sectors. Specialty suppliers in the US and Europe might call it “Whitewood,” but always with species certification to differentiate from inferior substitutes. No matter the name, knowledgeable buyers check export documentation for true Dyera costulata lineage.
Workshops using Jelutong stick to indoor air quality standards since wood dust, while relatively low-tox compared to some exotics, can still trigger respiratory irritation over time. OSHA guidelines suggest dust collection at every sanding and machining station. For resin extraction, operators wear gloves and wash off dried latex to avoid mild skin irritation. Shipping and storage must account for moisture—improper drying can lead to blue stain fungi and rare allergic reactions in workers handling moldy wood. Regulations now require documentation of sustainable harvesting to meet both CITES and FSC standards, and export batches go through random sample checks for compliance. From my years at small custom shops, crews respect Jelutong’s ease of handling, but everyone keeps dust masks close when ripping a fresh board.
Jelutong underpins the patternmaking world; machinists cut molds for sand casting, using blocks because the grain allows ultra-fine detail and hand corrections mid-process. Industrial designers favor it for prototypes of tools, toys, and vehicle models, since it’s easy to modify without chipping or splintering. Sculptors, especially in Asia and North America, swear by its workability for both practice maquettes and finished pieces. In chemical industries, extracted latex serves as an emulsifier and thickener in chewing gum, adhesives, and insulating materials. Conservation teams in furniture and artifact restoration sometimes turn to Jelutong for invisible repairs, as the wood stains and carves to match aged pieces. Shipping crate producers, especially in electronics, use Jelutong’s shock-absorbing nature for high-value custom containers.
Researchers now look for ways to breed Dyera costulata trees faster and adapt them to plantation settings to relieve pressure on wild forests. Biochemists focus on further refining latex extraction methods so resin quality meets modern food and medical grade requirements—something the global chewing gum industry cares about. Material scientists stretch to modify Jelutong, pushing for composites that layer its lightness with the toughness of synthetic polymers for aerospace and automotive applications. Teams in green chemistry test enzymatic treatments to break down wood fibers for new categories of biodegradable plastics. University partnerships connect botany, chemistry, and product engineering in efforts to develop sustainable adhesives and coatings based on Jelutong instead of synthetics.
Studies covering wood extractives and latex have found that Jelutong dust rarely causes allergic reactions, but chronic exposure can lead to minor dermatitis or asthma-like symptoms in some workers. Tests on latex show low toxicity for humans and most animals, which backs its long-standing use in chewing gum and food-grade adhesives. Toxicological screenings check for polyisoprene degradation products and trace impurities, keeping food and pharma regulators happy. Lab results from the past decade show minimal cytotoxicity, suggesting safety for ongoing use in both craft and industrial roles. Even so, factories add health warnings in case mold or improper drying elevates hazard risk profiles for sensitive individuals.
Jelutong faces challenges from surging demand and dwindling wild forests, but investment in sustainable plantations offers hope for new generations of craftspeople and manufacturers. Selective breeding programs aim for faster-growing trees, reducing harvest cycles and increasing latex yields per acre. Modification techniques get better yearly—scientists keep testing how chemical treatments and biological processes can strengthen or repurpose this versatile resource. In composite materials, Jelutong provides a renewable, lighter core for cutting-edge products from electric vehicle panels to ultra-thin consumer electronics casings. As more industries swing toward life-cycle assessment and emissions accounting, Jelutong’s low energy footprint and full-chain documentation could place it ahead of more synthetic or less traceable materials. The future will likely see this traditional material finding unexpected roles, blending the legacy of hand craftsmanship with the most up-to-date sustainability science.
Jelutong wood grew up in Southeast Asia’s rainforests, with Malaysia and Indonesia taking center stage in its story. The appeal comes from its workability. It feels soft under the blade, so carvers and woodworkers look to it almost instinctively for shaping and sculpting. I once watched a local woodcarver in Penang turn a Jelutong block into a delicate flower with nothing but a simple set of chisels. He said the wood almost told his hands where to go. That sort of feedback matters if you spend hours each day whittling or modeling.
Jelutong isn’t exotic to folks in the design or model-making world. Before 3D printing became a household term, product designers leaned on Jelutong to craft prototypes. The smooth grain means blades glide through clean. It takes pencil or chalk lines without smudging, so designers can sketch revisions directly on their work. It doesn’t split or twist much, so there’s less worry about warping before a final piece takes shape. Even architectural firms used it for scaled models of buildings that needed to look precise and detailed.
For artists and hobbyists, Jelutong is like a friendly invitation. The wood rarely presents nasty surprises—few knots, mostly straight grain, and it stays predictable under chisels and gouges. It’s light in your hand, and that brings relief to anyone who has dealt with fatigue after a long day at the bench. Model airplane enthusiasts and puppet-makers also take to Jelutong. Its stability can make the difference between a puppet that moves fluidly and one that stiffens awkwardly at the joints.
The wood’s role doesn’t stop at art and design studios. Factories that produce shoe soles, pattern blocks, or casting forms often reach for Jelutong because they can machine it fast, with results that stay true to measured specs. Some industrial users prize it as a base for creating rubber molds, as it leaves a clean impression and can handle repeated use. In traditional Asian boat building, Jelutong sometimes sneaks into decorative trim or small panels, where easy shaping counts more than brute strength.
Demand for Jelutong brought worries in the late 20th century. Over-harvesting saw forests shrink and resin tapping threatened tree health. Conservation groups pushed for managed plantations. Today, awareness of sustainable forestry practices shapes production—a positive turn, though illegal logging hasn’t vanished. Consumers and companies have a hand in this, too. Sourcing Jelutong that carries certification from reputable bodies helps protect the forests and support workers who harvest it with respect for future generations.
If you buy Jelutong, ask for proof of sustainable sourcing. Carvers, tinkerers, and builders who stick with responsible suppliers, encourage conservation in a practical way. For folks considering alternatives, some turn to basswood or balsa, giving those new woods a test run and seeing how they stack up for everything from design to art.
Years ago, I picked up a block of jelutong for my first attempt at hand carving. At the time, the price seemed right and the wood felt forgiving. That’s often what draws hobbyists and model makers to jelutong—a tropical wood found across Malaysia and Indonesia. Walking through the aisles of a timber yard, it’s easy to spot by its pale cream color and subtle grain. Yet after shaping a few simple forms, I quickly started noticing marks and dents that didn’t buff out. It didn’t take much force to realize this wood would never win any durability contest.
Jelutong weighs less than many common hardwoods; its fibers cut easily and don’t seem to fight back against the blade. This softness means the wood can dent or chip if you look at it the wrong way. According to test data, jelutong’s Janka hardness hovers around 400 lbf, which sits well below species like oak or maple. This puts the wood closer to pine, which most folks wouldn’t dream of using for floors or heavy-duty furniture. Jelutong carves indoors with finesse, but outdoors it’s another story entirely. Without serious treatment, bug infestations and rot can set in. Professional woodworkers have known this for decades—they won’t pick jelutong for dining room tables or any place where daily wear takes its toll.
Despite its softness, jelutong has carved out a niche because of that very trait. Technical model makers reached for it for years, precisely because blades glide through with minimal effort. In a world before CAD software and 3D printers, making prototypes and patterns from jelutong made sense. Its close grain holds detail, and you can sand it to a silky finish. The timber’s homogeneity means fewer split ends, and mistakes are easy to fix. Still, this doesn’t make it “strong”—the moment a load or stress joins the picture, jelutong bows out. Screws pull out under moderate tension; it warps or flakes if exposed to high humidity over time.
Sustainability matters more than ever. Jelutong’s story is tangled in its past: once harvested for latex, then cut for timber. Responsible forestry practices now play a part, and smart sourcing matters for all wood, not just this one. For anyone eyeing a long-term project, the best material balances natural appeal with toughness. Using jelutong for low-impact items—like intricate carvings, display stands, science models—makes good sense. But in kitchens, bathrooms, or anywhere moisture creeps in, failure comes fast and sure. Better to let harder woods do the heavy lifting and keep jelutong anchored in the world of art and craft.
Every woodworker I know learns, at some point, to trust what experience and research reveal. Reliable data from wood studies, straight talk from seasoned carvers, and hands-on trial all point to the same truth—jelutong’s charm lies in its workability, not in its brute strength or resilience. By understanding the limits and unique qualities of jelutong, mistakes and disappointment can be avoided. Education builds trust, and using the right material for the right purpose keeps every project standing, or carving, the test of time.
Jelutong wood comes straight out of the lush forests of Southeast Asia, mostly Malaysia and parts of Indonesia. Tropical rainforests in this part of the world have supported communities for centuries, and trees like the jelutong have their own story to tell. Whenever I think of woodworking or even picking up a pencil, I picture someone somewhere deep in a forest climbing through tall, leafy groves, tapping a jelutong tree, collecting latex or harvesting lightweight timber.
Jelutong isn’t something that people in colder climates stumble across every day, but in Southeast Asia, it’s pretty well known not just for its porous, pale wood, but also for the latex it yields—used to be for chewing gum and plastics. Carvers love jelutong. I remember working with it in a carpentry shop outside Kuala Lumpur, watching masters take fine, smooth shavings off a jelutong plank. The wood just felt easy to shape—soft, without those knots that can surprise you halfway through a project. Model makers and sculptors keep coming back to it because nothing else quite matches its blend of lightness and reliability. It’s no mystery why jelutong ends up in blueprint models or intricate carvings.
Logging has always been a complicated business, and jelutong is no exception. I talked with villagers during a trip to Pahang, where families had once relied on tapping for latex as a side income. Logging supported livelihoods, but at the same time, travelers could see gaps opening in the canopies of rainforest reserves. The world depends on healthy forests for clean air and climate stability, and each tree cut changes the landscape. Studies from the Malaysian Timber Council and the World Wildlife Fund raised alarms decades ago after jelutong started showing up on lists of threatened species due to habitat loss and unsustainable harvests.
Wood users and woodworkers everywhere hold some responsibility. People demand cheaper, lighter, easier products. The demand can pressure forests, especially where regulations lack teeth or enforcement wavers. Responsible forestry certificate programs only mean something if buyers and sellers actually choose to follow them. I learned the hard way that market pressure can undercut good intentions—the shop I worked at sometimes faced days where uncertified wood offered a quick deal, but also anxiety about what we were encouraging back down the supply chain.
Every project involving Jelutong should carry a question: was this wood harvested sustainably? Forest Stewardship Council (FSC) certification marks matter, but so does curiosity—people need to ask for proof and spread the word. Imported wood must pass customs, but only folks on the ground know if those forests get another generation of tall jelutong or just stumps. Educating buyers helps, so does supporting organizations that pressure loggers to protect rather than strip forests bare.
Forests in Malaysia and Indonesia hold the key to much more than wood for ships or pencils. They shape weather, hold history, and house wildlife that’s nowhere else on earth. Responsible, well-planned harvesting paired with replanting gives jelutong a shot to survive. If we expect to keep seeing smooth wood panels and beautiful carvings in the decades to come, the story of jelutong wood demands more respect and more action from everyone who touches it.
Most carvers remember that first piece of wood that made everything click. Jelutong comes up fast in those conversations. Think of it as the friendly material you wish you had as a beginner, yet even experienced sculptors keep coming back. Trees don’t always grow in neat, predictable patterns, but Jelutong has a way of giving carvers the same soft, even texture from log to log. As someone who’s tried everything from balsa to black walnut, I can say a sharp blade moves through Jelutong without the tug or splinter you get from so many “easy” woods.
Too much dust or clogging tears the fun out of handwork. Jelutong, though light, rarely gums up knives and gouges. My tools stay sharp longer, and sandpaper glides rather than grinds. This is the wood the old timers reach for, not because it’s exotic or rare, but because it works with you. Even rotary tools zip through it safely. There’s less fighting the grain, less worry about a slip chipping off hours of work.
Traditional craft circles rate Jelutong on par with basswood for carve-ability. Published tests mark its Janka hardness at roughly 380 lbf—softer than many, a bit like pine in the hand but less resinous. Scientific American once called it the “patternmakers’ choice” due to consistent texture, easy finishing, and low risk of hidden knots. Southeast Asian makers, who know their native woods best, pick it for detailed model work or quick-turn prototypes. There’s almost no guilt in testing ideas on Jelutong: mistakes won’t set you back much in time or money.
Stories of deforestation led to questions about Jelutong’s future. In the past, overharvesting for latex and carving nearly wiped it from some forests. Now, better plantation management and rules from PEFC or FSC certification protect both the species and the carver’s conscience. These protections are still evolving, so buying Jelutong today means asking about the source. Choosing certified wood supports managed regrowth and respects the communities connected to these forests. Solid stewardship means future carvers get the same shot.
Every wood has quirks. Jelutong’s softness makes it vulnerable outdoors and to wood-boring insects. Large projects need protection or treatment, especially in humid climates. If your finish has gaps, mold can set in fast in the wrong workshop. The trade-off: for small models, detail work, or learning, this wood gives cleaner cuts and fewer headaches than harder, splinter-prone species. I keep a few blocks around for testing new tool edges or layout ideas that’ll evolve into sturdier woods later on.
Pay attention to storage—Jelutong warps if left exposed to big shifts in humidity. Use fine-toothed saws and sharp blades for best results. Some prefer a sealer coat because stain absorbs unevenly, but paint and polish lay down smooth. The scrap pieces often become jigs or quick sanding blocks. In the right hands, Jelutong pushes skill forward rather than holding it back, creating a real sense of progress in the workshop.
Woodworkers talk about Jelutong like it’s gold dust for carving and pattern-making. The fine grain cuts easily, holds detail, and sands smooth as glass. In school, I remember carving blocks of it for model projects. The wood rarely splintered and let us get creative with minimal skill. Because it’s soft and easy to work, folks use Jelutong for sculpted pieces, wooden toys, and drawing tools. Most Jelutong comes from Southeast Asia, especially Malaysia and Indonesia, where the trees grow in the lowland rainforests.
Old-growth forests supply much of the Jelutong on the market. The tree, Dyera costulata, grows tall, reaching up to 60 meters in its natural habitat. Logging in these rainforests isn’t friendly to biodiversity. Each tree taken out adds to forest fragmentation. Bird species, wild cats, and all kinds of tree-dwelling animals lose valuable territory with every harvest. According to Global Forest Watch, Malaysia and Indonesia have lost millions of hectares of primary forest in the past two decades—often to commercial timber and palm oil but also to specialty woods like Jelutong.
Stories from groups in Malaysia and Indonesia bring another layer of concern. Local communities rely on forest resources, both for their economy and cultural practices. Logging roads open up remote areas. Once the roads come in, other industries follow, putting more strain on delicate forest ecosystems. So while Jelutong puts money in some locals’ pockets, the gains don’t always reach small villages, and forests don’t recover quickly after heavy disturbance.
This tree grows at a decent pace. In favorable conditions, young Jelutong can shoot up 1–2 meters in a year. That sounds promising until you factor in that commercial interests usually go for mature trees—those at least 60 years old. Replacing what’s lost through logging is a slow process, even with natural regrowth in secondary forests.
Illegal logging adds to the problem. Governments in exporting countries have introduced certification systems that promise sustainability, but products labeled legal don’t always guarantee that forests bounce back or stay intact. Money and politics get in the middle, and sometimes supply chains mix certified and non-certified lumber.
Buying wood certified by the Forest Stewardship Council (FSC) or other trusted bodies helps. FSC certification means some checks have happened, though loopholes aren’t rare in places with weak enforcement. Shoppers can watch for these labels or ask woodshops to trace the origin of their supplies. Traceability builds accountability and decreases the market for illegally harvested Jelutong.
Switching to farmed woods, such as Paulownia, basswood, or responsibly managed balsa, puts less strain on tropical forests. North American and European woods from sustainable forests can replace Jelutong for many craft and modeling purposes. Builders and artists have stepped away from tropical hardwoods after learning about habitat loss and community impacts.
Jelutong has its place for those who rely on it for their craft or trade, but choosing it with open eyes matters. Supporting transparent supply chains and mixing in sustainably farmed alternatives keeps pressure down on the forests that shelter this resource. Based on what we’ve seen, buying less, asking more questions, and considering alternatives genuinely gives tropical forests and local communities a better shot going forward.
| Names | |
| Preferred IUPAC name | poly(1,4-isoprene) |
| Other names |
Dyera costulata Dyera lowii |
| Pronunciation | /ˈdʒɛl.uː.tɒŋ/ |
| Preferred IUPAC name | cis-1,4-Polyisoprene |
| Other names |
Dyera jelutong dyera jelutong kuning punti |
| Pronunciation | /ˈdʒɛluːtɒŋ/ |
| Identifiers | |
| CAS Number | 9000-94-8 |
| Beilstein Reference | 4-09-00-04336 |
| ChEBI | CHEBI:82134 |
| ChEMBL | CHEMBL2109460 |
| ChemSpider | 595098 |
| DrugBank | DB14173 |
| ECHA InfoCard | eaa44a13-5d43-43b8-99cb-47f6b3c5cc0d |
| EC Number | 9000-54-8 |
| Gmelin Reference | 5777 |
| KEGG | C10060 |
| MeSH | D018246 |
| PubChem CID | 167185 |
| RTECS number | SL3780000 |
| UNII | 36B82AMN43 |
| UN number | UN1336 |
| CAS Number | 9000-18-0 |
| Beilstein Reference | 1461818 |
| ChEBI | CHEBI:138640 |
| ChEMBL | CHEMBL376216 |
| ChemSpider | 35245016 |
| DrugBank | DB01361 |
| ECHA InfoCard | ewc-207bdb97-cf14-4de6-acaf-5d7387be5a67 |
| EC Number | 6.1.32 |
| Gmelin Reference | 8766 |
| KEGG | C08876 |
| MeSH | Euphorbiaceae |
| PubChem CID | 24889678 |
| RTECS number | KN9650000 |
| UNII | 6P44KJ8E3A |
| UN number | UN1339 |
| Properties | |
| Chemical formula | (C10H16O) |
| Appearance | Pale yellow to light brown, straight-grained, fine and even-textured, with a smooth surface. |
| Odor | sweet |
| Density | 450 kg/m3 |
| Solubility in water | Insoluble |
| log P | 2.34 |
| Vapor pressure | Negligible |
| Acidity (pKa) | 6.7 |
| Basicity (pKb) | 6.39 |
| Magnetic susceptibility (χ) | Diamagnetic |
| Refractive index (nD) | 1.5162 |
| Viscosity | Low |
| Dipole moment | 0.00 D |
| Chemical formula | (C5H8)x |
| Molar mass | 192.3 g/mol |
| Appearance | Pale yellow to straw-colored, straight-grained, fine and even texture |
| Odor | slight, characteristic |
| Density | 515 kg/m3 at 15% MC |
| Solubility in water | Insoluble |
| log P | 2.4 |
| Acidity (pKa) | 15. |
| Basicity (pKb) | 6.61 |
| Magnetic susceptibility (χ) | −8.5e−6 |
| Refractive index (nD) | 1.522 |
| Viscosity | Low |
| Dipole moment | 1.82 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 695.644 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -26.98 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -35.2 MJ/kg |
| Std molar entropy (S⦵298) | 241.7 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -8.21E+02 |
| Std enthalpy of combustion (ΔcH⦵298) | −39.22 MJ kg⁻¹ |
| Pharmacology | |
| ATC code | A06AX01 |
| ATC code | A04AD12 |
| Hazards | |
| Main hazards | Dust may cause irritation of the nose and throat; has been reported as a sensitizer. |
| GHS labelling | GHS07, GHS08 |
| Pictograms | Indoor use, Dry conditions, Low strength, Low durability |
| Signal word | Warning |
| Hazard statements | Not a hazardous substance or mixture according to the Globally Harmonized System (GHS) |
| Precautionary statements | Precautionary statements: Dust may be irritating to eyes, nose and throat. |
| NFPA 704 (fire diamond) | 1-1-0 |
| Flash point | 79°C |
| Autoignition temperature | 210°C |
| Lethal dose or concentration | LD50 (rat, oral) >5000 mg/kg |
| LD50 (median dose) | LD50: 5000 mg/kg (rat, oral) |
| NIOSH | RTD6945000 |
| PEL (Permissible) | 0.5 mg/m³ |
| REL (Recommended) | 60 |
| IDLH (Immediate danger) | Not listed. |
| Main hazards | May cause irritation to skin, eyes and respiratory system. Dust may cause dermatitis and asthma. |
| GHS labelling | GHS07, GHS08 |
| Pictograms | Product is certified, Legally harvested, Wood, Non-coniferous, Laminated, Unmodified, Air dried, Kiln dried |
| Signal word | Warning |
| Precautionary statements | May cause allergic skin reaction. |
| NFPA 704 (fire diamond) | 1-1-0 |
| Flash point | 79°C |
| Autoignition temperature | 210 °C |
| Lethal dose or concentration | LD50 (oral, rat) >5 g/kg |
| LD50 (median dose) | LD50: 5000 mg/kg (rat, oral) |
| NIOSH | UU8225000 |
| PEL (Permissible) | 50 ppm |
| REL (Recommended) | 0.80 |
| IDLH (Immediate danger) | Not listed |
| Related compounds | |
| Related compounds |
Gutta-percha Chicle Latex Balata |
| Related compounds |
Chicle Gutta-percha Latex Balata |
West Ujimqin Banner, Xilingol League, Inner Mongolia, China
