The story of 3,5-di-tert-butylcatechol began in the push for more stable industrial inhibitors back in the late 20th century. Visionary chemists in polymer and petrochemical sectors aimed to control risky auto-oxidation reactions. Traditional catechol and its close relatives kept running into trouble with volatility and darkening issues. Researchers started playing with bulky, branched alkyl groups—seeking a way to guard the catechol core. The introduction of tert-butyl groups onto the aromatic ring handed the world 3,5-di-tert-butylcatechol, a molecule much harder to oxidize and more reliable for safety-critical processes. Since then, this compound strengthened its position, cemented in the playbooks of monomer stabilization and specialty antioxidants.
3,5-Di-tert-butylcatechol stands out as a non-volatile, tan to brown crystalline powder, prized in chemical plants and industrial labs. With a sharp, phenolic scent, the compound signals serious business. Production lines stock it for its resilience in high-oxygen settings. Bottles get sealed tight, not only to guard from oxidation, but to prevent moisture pick-up that might degrade batch quality. High purity grades serve industries from plastics to adhesives, with quality control teams checking every lot for hints of impurities and off-odors.
Few molecules match the tactile confidence 3,5-di-tert-butylcatechol brings to a bench. With a molecular formula of C14H22O2 and a melting point usually sitting between 69 and 74 degrees Celsius, the compound resists melting in a hot room but dissolves smoothly in organic solvents. Its bulky tert-butyl groups not only boost thermal stability but also drastically slow down oxidation in air. This resistance allows longer storage under correct conditions. Solubility trends make it welcome in aromatic hydrocarbons, esters, and chloroform, while water doesn’t tempt it much. The catechol functional groups retain the ability to bind metal ions, giving researchers a neat handle for downstream chemistry.
Every container of 3,5-di-tert-butylcatechol leaves the supplier with clear data: CAS number 88-58-4, minimal purity above 99%, batch-specific assays, and degradation profiles. Labeling highlights storage below 30°C, ASTM-referenced testing methods, and warnings about phenolic handling. Packaging ranges from small amber glass bottles for research to sealed drums for manufacturing, always lined to prevent exposure to trace metals or strong acids. Authentic suppliers attach certificates summarizing synthesis traceability and compliance with regulations from REACH to OSHA.
The main route to 3,5-di-tert-butylcatechol requires electrophilic aromatic substitution. Technicians start with catechol as a feedstock, then react it with tert-butyl alcohol—often in the presence of acid catalysts like sulfuric or phosphoric acid—controlling heat and timing to coax the tert-butyl groups onto the meta positions. Temperature profiles must avoid uncontrolled polymerization. The crude product gets recrystallized, sometimes across several organic solvents, to weed out colored byproducts and ensure focus on the valuable derivative. Elemental analysis and NMR verify that only the 3,5-substitution prevails.
Chemists reach for 3,5-di-tert-butylcatechol during inhibition reactions where standard antioxidants collapse under thermal stress. The catechol ring still allows for classic oxidation to o-quinones, but the tert-butyl bulk prevents fast self-destruction. Reactive intermediates can attack only under strong oxidizing conditions, so in radical-trapping work or protecting conjugated olefins, this compound keeps side reactions in check. The phenolic hydrogens allow for etherification, esterification, or even coupling to polymer chains. In metal-catalyzed cross-coupling, the compound can play both as substrate and protecting group, while serving as a core for more exotic ligands or UV-stabilizers.
To navigate catalogs, scientists keep tabs on alternative names for this antioxidant. It travels under labels like 4,6-di-tert-butylpyrocatechol, DTBC, and butylated catechol. Some supply chains reference specialty names or codes for high-purity formulations targeted to biomedical or advanced polymer uses. Reading labels matters; some sellers may only mention the main isomer or use European trade names. No matter the alias, experienced hands know to double-check reagent numbers and molecular formulae to avoid costly mix-ups.
Factories drilling into safety data sheets for 3,5-di-tert-butylcatechol don’t take shortcuts. Phenolic dusts can irritate eyes and skin or trigger allergic responses after prolonged exposure. Material safety protocols mandate working in well-ventilated hoods, wearing chemical-resistant gloves, and avoiding open flames anywhere near production lines. EPA and REACH rules require leak-proof storage and spill-management plans. Every drum’s journey through a site gets logged, from delivery to disposal, staying clear of municipal drains or food-prep areas. Emergency kits keep eyewash and neutralizers at arm’s reach in labs that run phenolic workups or large-scale reactions.
Industries use 3,5-di-tert-butylcatechol most aggressively in monomer stabilization. During storage and transit, vinyl monomers and unsaturated resins need fresh antioxidant to buffer against runaway polymerization. Without it, even a few hours at the wrong temperature can start chain reactions that clog valves and compromise millions of dollars in product. Paint and adhesive makers find value in this compound for shelf life extension and color stability. Some biomedical fields experiment with this catechol for anti-corrosion coatings on implants or nanomaterial surface treatments. In refinery units, engineers seek it for specialty fuel additives and to manage sulfur chemistry during fractionation.
Academic labs treat 3,5-di-tert-butylcatechol as a teaching model for steric effects in aromatic chemistry. The tert-butyl groups—among the bulkiest available—help students and professionals visualize how substituent size influences electronic distribution and reactivity. Research continues on using this molecule as a template for synthetic antioxidants, with modifications on the tert-butyl groups aiming for even better thermal and oxidative resistance. Nanotech researchers recently started tethering this compound to nanoparticles’ surfaces to slow down oxidation in biomedicine and electronics. Each success here nudges the compound into higher-value applications where performance trumps cost.
Toxicologists keep a wary eye on phenolic antioxidants, and 3,5-di-tert-butylcatechol is no exception. Animal studies reveal moderate acute oral toxicity, with dose-dependent effects on liver and kidney markers. Long-term exposure in manufacturing staff can sensitize skin or trigger dermatitis if personal protective gear gets skipped. In controlled conditions, air and wastewater concentrations remain low, thanks to rapid decomposition and adsorption on activated carbon filters. Environmental health scientists push for even safer thresholds, balancing the undeniable industrial benefits with the challenge of responsible downstream handling. Ongoing studies compare chronic toxicity to related compounds, helping regulators set stricter occupational and environmental guidelines.
The next decade could see 3,5-di-tert-butylcatechol find wider use in advanced materials science: flexible electronics, smart coatings, and biocompatible implants. Green chemistry trends urge manufacturers to deploy cleaner synthesis pathways, cut solvent loads, and use recycling for spent antioxidant residues. Process research teams could soon deliver more energy-efficient catalyst systems for making the compound at scale. Regulatory agencies seem poised to tighten limits on environmental phenol releases, so industry insiders watch closely for new filtration or bioremediation methods to minimize the ecological footprint. As the need for thermal and oxidative stability grows in high-tech sectors, every improvement in this compound’s safety, performance, or sustainability pays meaningful dividends.
3,5-Di-Tert-Butylcatechol stands out in a world flooded with complicated substances. Having spent years working closely with manufacturing teams and chemical supply experts, I see this compound show up in a surprising range of industries. Its main job involves keeping things stable, safe, and usable—qualities most people overlook because the results just “work.”
Chemicals like this keep everyday plastics from breaking down long before they ever reach buyers. In the plastic factories I’ve visited, even a brief interruption or mistake can cause entire batches of resin to spoil. Strong antioxidants like 3,5-Di-Tert-Butylcatechol prevent air and heat from sparking unwanted chain reactions inside the liquid resins. The payoff is less waste and fewer headaches.
In real-world numbers, the global market for plastics topped 390 million tons last year. Without stabilizers, much of that production would simply fail on the line. With 3,5-Di-Tert-Butylcatechol keeping the process steady, packaging, electronics, car parts, and dozens of other goods stay useable and safe.
Shipping chemicals gets risky fast unless you lock out spoilage. Some liquid chemicals—especially unsaturated monomers—want to react with oxygen and turn thick or even explosive. During long sea voyages or storage in warm warehouses, these materials can become unstable. Adding a few ppm of this compound keeps everything calm.
Regulation calls for safety in chemical transport. As a stabilizer, 3,5-Di-Tert-Butylcatechol answers those standards. Proper use means fewer fires and leaks, lower insurance premiums, and less harm to workers down the chain.
It is surprising where antioxidants pop up. While not every food or personal care product needs strong phenolic stabilizers, certain processing steps need this level of protection. In specialized food packaging, antioxidants boost shelf life and cut down on flavor loss. Some cosmetics—especially high-end creams and lotions—depend on this molecule to hold off rancidity.
Consumers rarely see these names listed on finished goods, but quality checks in labs prove the difference. Oils stored with the right antioxidant stay bright and fresh, instead of turning cloudy and off-smelling.
I’ve handled batches of protective coatings and lubricants that demand long life. Without antioxidant help, these products gum up fast, especially under sunlight or heat. There’s nothing worse than watching a drum of fluid worth thousands of dollars lose value from a preventable reaction. Using 3,5-Di-Tert-Butylcatechol, manufacturers keep their inventory stable for distribution and use.
The chemical industry keeps looking for stabilizers with low toxicity and high performance. 3,5-Di-Tert-Butylcatechol does its job well, but safe handling matters. Its powder and liquid forms can irritate the skin and eyes. Factories that care about worker safety enforce strong procedures, supply gloves and goggles, and maintain good ventilation. This isn’t just paperwork—it's real protection.
Recent research has turned toward greener antioxidants, sometimes plant-derived or biodegradable. These options could join or replace old standards, but for now, 3,5-Di-Tert-Butylcatechol continues proving itself on the line, in transit, and on the shelf.
If you glance at the label of certain lubricants, plastics, or industrial oils, you might spot the ingredient 3,5-Di-Tert-Butylcatechol. The name feels a bit intimidating, but this compound pulls a lot of weight in everyday products, mostly due to its chemical structure. Sitting at the core of this molecule, two large tert-butyl groups hug a simple catechol framework. Breaking it down, you've got a benzene ring—a hexagon of carbon atoms with alternating double bonds—hosting two hydroxyl groups (-OH) at the 1 and 2 positions. The tert-butyl groups, each with a carbon atom at the center surrounded by three methyl groups, latch on at positions 3 and 5.
What does this mean in real terms? The tert-butyl “arms” don’t just space out for show. Because these groups are so bulky, they shield the catechol’s functional segments, making the whole molecule more resistant to unwanted side reactions, particularly oxidation. This makes 3,5-Di-Tert-Butylcatechol a strong antioxidant—something I have seen highlighted in technical data sheets for rubber and polymer production. Factories want chemicals that survive heat and oxygen, ones that don’t fall apart. This compound does the job due to how those tert-butyl groups block outside attacks while leaving enough room for the catechol to neutralize free radicals.
Chemists design molecules with these kinds of substitutions on purpose. Catechol itself works as an antioxidant, but it also breaks down fast under tough industrial conditions. Swap in the tert-butyls at just the right spots and you see the shelf life stretch, not only for the additive but for the materials it protects. Polymers start lasting through harsher sunlight, higher heat, and rougher mechanical stress. Old plastics turned brittle over months; modern ones with this additive keep their flexibility a lot longer.
Even with all this in mind, safety sneaks into the conversation, especially on the shop floor. When I handled similar compounds, I learned that you always need good gloves. These molecules react with air if you let them, and their breakdown products won’t do your skin any favors. Anyone who deals with antioxidants in bulk storage hears reminders about spills and protective gear. It pays to pay attention, especially since small tweaks to a molecule's outline—like where those bulky arms pop up—change both its benefits and its risks.
Modern industry keeps looking for better ways to keep goods from aging too quickly. Some research I’ve followed recently explores swapping even bigger or differently-shaped groups into catechol, hoping for even longer-lasting antioxidants or safer versions for food packaging. Others test greener, bio-based lines of production, steering away from petrochemicals altogether so these molecules break down cleanly when thrown away. These efforts come from real pressure—consumers and regulators both want less persistent chemicals in the environment, not just fewer cracked and worn plastics in landfills.
Knowing the chemical makeup of 3,5-Di-Tert-Butylcatechol helps explain why it shows up nearly everywhere durable plastics are found. Its structure is a kind of armor, but also a launch point for safer, smarter chemistry. We can push for better materials if we push for better-designed molecules first.
3,5-Di-Tert-Butylcatechol finds regular use in the chemical industry as a stabilizer and antioxidant. It keeps products like polymers from breaking down during manufacturing and shipping. Some folks working with industrial chemicals think of it as routine stuff, but any chemical can become a concern if folks ignore safety information or let their guard down.
The Material Safety Data Sheet (MSDS) reveals some sobering details. Contact with this compound may irritate eyes, skin, and the respiratory system. If someone breathes in enough dust or fumes, they could develop headaches, dizziness, or even trouble breathing. Prolonged skin contact may lead to rashes. Repeated or high-level exposure sometimes causes bigger problems, damaging kidneys or the liver. People in labs and factories see these risks not just as stories in a manual but as real hazards they train to avoid.
Larger studies and agency reviews back up that experience. The European Chemicals Agency and the National Institute for Occupational Safety and Health note that 3,5-Di-Tert-Butylcatechol can cause organ damage through prolonged exposure. Anybody working near this substance should know that regular handling without protective gloves or goggles runs the risk of harm. It's not explosive or wildly unstable, but it won’t do tissue or lungs any favors if spilled or mishandled.
One challenge comes from its persistence. 3,5-Di-Tert-Butylcatechol doesn’t just disappear in the environment. If someone dumps it down a drain or fails to dispose of waste properly, it may stick around in soil or water, accumulating over time. This could affect fish or small mammals at the bottom of the food chain. There’s no need to panic about catastrophe, but ignoring safe handling practices contributes to real, long-term issues.
People sometimes forget that harm often begins with small oversights. Most chemical injuries start with a splatter, a leaky valve, a forgotten mask. Lab workers, warehouse staff, and truck drivers all stack up years of safe shifts by relying on routines but also by respecting every warning label. One moment of carelessness can have lifelong impacts. Skin irritation might fade, but lung or organ problems do not always mend so cleanly.
At a time when supply chains run at double speed and staff turnover keeps climbing, thorough training and refreshed hazard awareness matter more than ever. Telling new hires the facts about chemicals like this one isn’t just a legal box to check. It’s about passing down a culture of respect for risk.
The solutions aren’t complicated. Appropriate gloves, proper eye shields, and reliable ventilation in workspaces go a long way. Companies ought to check that their storage drums don’t leak and create cleanup plans before accidents happen. At home, only professionals and well-trained hobbyists should handle chemicals of this sort, and always in tight-sealed containers.
The story of 3,5-Di-Tert-Butylcatechol offers an old lesson: common sense and respect for science keep people safer, workplaces cleaner, and products better. Focusing on good habits and clear information gives everyone a way to handle risk, not just react to it.
Chemical safety is a subject where real experience counts. 3,5-Di-Tert-Butylcatechol (often called DTBC) serves as an antioxidant and stabilizer in many industrial settings. Over the years, cases of chemical spills and unexpected reactions have reminded me that most accidents trace back to overlooked basics, like storage. Mistakes can cost lives, inventory, and even sink a business.
DTBC doesn’t get along well with oxygen or light. I’ve opened containers in the past and found products discolored or full of odd-smelling fumes. Air sets off oxidation, knocking out much of the effectiveness this compound brings to polymers and fuels. Things move downhill fast from there. Discoloration means contamination, and contaminated chemicals simply waste money and risk product recalls.
DTBC demands a tight seal. Air-resistant containers work best. Stainless steel, amber glass, or high-quality plastics with firm lids have kept my batches stable for years. Ordinary packaging can crack, warp, or give chemicals a way in or out. I always skip containers with signs of wear or stress, since even a tiny fault will let moisture or air inside.
Heat sets off trouble with many chemicals, and DTBC falls squarely into that category. At temperatures above 30°C (86°F), reactivity accelerates. At work, we use rooms with consistent climate control, aiming for 2°C to 8°C. The fridge in my home lab might seem like a good idea, but food units swing in temperature and trap moisture. Special chemical coolers or ventilated refrigerators built for lab use offer the best protection. Freezing rarely helps and sometimes encourages condensation or crystals, both of which can spoil your supply.
DTBC breaks down with light exposure, especially sunlight. This problem showed itself in my early years on the supply chain: clear bottles stored near windows always gave the worst results. Now I recommend opaque or amber bottles, stored deep inside cabinets or chemical storage rooms, far from any UV exposure. A small change like this brings lasting benefits to safety and product shelf life.
No one enjoys sudden alarms or cleanup duty. By keeping DTBC away from acids, bases, and oxidizers inside a specialized chemical storage area, the risk shrinks to almost nothing. My team marks every shelf and uses separate cabinets for different chemical types. Labels stay crisp and up to date, because confusion leads to poor decisions. After an incident with cross-contaminated drums, we brought in barcoding and regular audits—simple steps that now save untold hours and costs.
Chemicals like DTBC attract curious hands. Access limits, restricted keys, or entry logs stop accidents before they start. Training forms the backbone: every lab tech and janitor learns the meaning behind the colored labels and warning signs. A few close calls convinced me that knowledge keeps buildings and teams standing.
No storage plan feels complete without waste management. Out-of-date DTBC goes straight into secure hazardous waste containers, never down the sink or into regular trash. Certified professionals pick up and treat this kind of waste. Rules change from place to place, but keeping your conscience and environment clear always makes sense.
By giving thoughtful attention to the storage of chemicals like DTBC, companies and researchers protect more than just their bottom line. Careful storage helps inspire confidence—from workers to regulators to customers—by showing that safety, compliance, and common sense can work hand in hand.
Working in a lab or production area brings a long list of hazards, but some chemicals deserve extra caution. That’s definitely true for 3,5-Di-Tert-Butylcatechol (DTBC). Folks who’ve spent time handling this compound know its role as an antioxidant and stabilizer in industrial settings. That little molecule packs plenty of punch: skin and eye irritation, lung trouble if inhaled, and some not-so-fun headaches if you skip safety steps. I’ve seen plenty of new researchers get cavalier around common inhibitors, and every time the lesson comes fast. DTBC is best handled with respect.
In my own lab days, we kept a shelf near the entrance stacked high with nitrile gloves, splash goggles, and clean, fitted lab coats. Bare hands never touched DTBC. I still remember a spill from a distracted intern who didn’t pull on gloves—tiny red lines of irritation flared up on their hands within minutes. This compound loves finding weak points in worn-out gloves or thin lab coats. Disposable nitrile gloves usually hold up, and face shields protect against the odd splash. Closed shoes, long pants, and tied-back hair make sense, too.
If you’ve ever tried working with DTBC in a cramped, stuffy room, you know that the vapors build up fast. Fume hoods aren’t just there for show. Most reactions that involve DTBC run smoothly under a hood, with the sash dropped as low as possible. I always recommend checking the airflow with a piece of tape or a tissue taped near the sash before starting. You want those fumes moving away from your face, not toward it.
Leaving an unlabeled bottle on a crowded shelf leads to confusion. One time, a coworker nearly mistook DTBC for a totally different compound stored in a similar brown glass bottle. Clear, written labels stop these mix-ups dead in their tracks. The chemical sits best in a cool, dark cupboard, away from acids and oxidizers. Sunlight breaks down DTBC, turning it useless or worse. Sealing the container right after use helps keep moisture out and stops the compound from turning into a sticky mess.
Anyone who spends much time in the lab knows spills happen. I’ve seen benches stained by someone scrambling for paper towels. Instead, absorbent pads do the trick, scooping up liquids without aerosolizing them. A ready supply of sodium bicarbonate helps neutralize small spots, along with a proper waste bin for the pads and rags. Never dump the mess down the sink—local rules take this stuff seriously, and treating chemical waste with care keeps neighbors and the environment safe.
Watching a team nail a dry run for chemical emergencies makes the real thing less nerve-wracking. I push for refresher training at regular intervals. If someone freezes or panics, it can turn a small accident into a disaster. Knowing the eye wash station and safety shower locations by heart is more important than any fancy analytical technique.
Labs run on teamwork. Every slip, shortcut, or casual move with DTBC puts others at risk—neighbors, cleaning staff, delivery folks. It only takes a moment’s carelessness for a routine procedure to spiral into evacuations or hospital trips. Learning the ropes and following the safety playbook helps everyone make it home safe at the end of the day.
| Names | |
| Preferred IUPAC name | 3,5-di-tert-butylbenzene-1,2-diol |
| Other names |
DTBC 3,5-Di-tert-butyl-1,2-benzenediol 3,5-Bis(1,1-dimethylethyl)benzene-1,2-diol 4,6-Di-tert-butylpyrocatechol 3,5-Di-tert-butylpyrocatechol |
| Pronunciation | /ˈθriː,faɪv daɪ ˌtɜːrtˈbɜː.tɪl kəˈtiː.kɒl/ |
| Identifiers | |
| CAS Number | 1138-52-9 |
| Beilstein Reference | 1720638 |
| ChEBI | CHEBI:63645 |
| ChEMBL | CHEMBL15111 |
| ChemSpider | 53619 |
| DrugBank | DB14006 |
| ECHA InfoCard | 03c5d833-ffb6-457d-bb2b-4a8ee183505a |
| EC Number | 204-884-0 |
| Gmelin Reference | 130491 |
| KEGG | C06533 |
| MeSH | D008008 |
| PubChem CID | 7002 |
| RTECS number | GG3150000 |
| UNII | 9KVC331A3D |
| UN number | UN3077 |
| Properties | |
| Chemical formula | C14H22O2 |
| Molar mass | Molar mass: 222.34 g/mol |
| Appearance | White to light yellow crystalline solid |
| Odor | Odor: phenolic |
| Density | 0.97 g/cm3 |
| Solubility in water | insoluble |
| log P | 2.8 |
| Vapor pressure | 0.000015 mmHg (25°C) |
| Acidity (pKa) | 10.3 |
| Basicity (pKb) | 7.89 |
| Magnetic susceptibility (χ) | -76.0e-6 cm³/mol |
| Refractive index (nD) | 1.529 |
| Viscosity | 120.2 cP (25°C) |
| Dipole moment | 2.15 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 210.3 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -408.0 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -6527.8 kJ/mol |
| Hazards | |
| Main hazards | Harmful if swallowed or in contact with skin. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. |
| GHS labelling | GHS02, GHS07, GHS08 |
| Pictograms | GHS07, GHS09 |
| Signal word | Warning |
| Hazard statements | H302, H315, H319, H411 |
| Precautionary statements | P210, P280, P305+P351+P338, P370+P378, P403+P235, P501 |
| NFPA 704 (fire diamond) | 2-3-0 |
| Flash point | 113°C |
| Autoignition temperature | 510 °C |
| Lethal dose or concentration | LD50 oral rat 2200 mg/kg |
| LD50 (median dose) | > 500 mg/kg (Oral, Rat) |
| NIOSH | GB9625000 |
| PEL (Permissible) | 10 mg/m3 |
| REL (Recommended) | 10 mg/m³ |
