Dioctyl Sulfide: Industry Deep Dive and Honest Insights
Historical Development
Dioctyl sulfide has roots stretching back to the early twentieth century, as industries hunted for chemical compounds that could pull double duty in both chemical synthesis and lubrication. In the rush of industrial growth after World War II, researchers ramped up trials in oil processing and polymer work, looking for compounds to boost efficiency and reliability. My own foray into chemical plants revealed old lab notebooks marked with early dioctyl sulfide recipes, experiments sandwiched between long days of troubleshooting gear fouling. The journey from obscure specialty chemical to vital additive took grit—it was never just a story of labs, but of people hauling heavy drums, experimenting late into the night, and tracking down suppliers ready to take a risk.
Product Overview
Dioctyl sulfide shows up as a pale, oily liquid, almost invisible in the streams of the big chemical tanks unless you know what to look for. It has a knack for sliding into a batch without gumming up the works or getting lost among more aggressive reactants. Over the years, it's become essential in sectors dealing with lubricants, rubber processing, and as an intermediate for making specialty chemicals. Teams running long production lines value it for keeping things running smoothly; talking with plant managers, it’s clear they count on dioctyl sulfide to balance speed and stability. Markets have learned to trust consistent supply, though every so often, shifts in crude oil pricing or specialty sulfur supply can throw a wrench in sourcing.
Physical & Chemical Properties
One thing that stands out about dioctyl sulfide is its physical tactility—a clear, viscous liquid with a faint, rubbery odor that hangs around rinse rooms on busy days. The boiling point hovers above 320°C, which means it doesn’t evaporate under regular process conditions. Its solubility splits: it won’t mix with water but dissolves quickly in all kinds of organic solvents, from benzene to toluene. In my lab, measuring refractive index and density always turns up sharp, predictable numbers—evidence of the compound’s reliability. Chemically, it holds stability in storage but reacts under controlled conditions, mostly through its sulfur atom, which can bond or break away as needed by the synthesis route.
Technical Specifications & Labeling
Regulatory bodies push for tight labeling requirements, with specifications on purity (typically above 98%), density, boiling point, color, and sulfur content. Sticking to these standards is not about ticking checkboxes—missteps at receiving docks can set off a domino effect across multiple products. On receiving shipments, lab techs pull samples for gas chromatography, double-check for contaminants like residual solvents or unreacted alcohols, and log the product information using international standards. This isn’t just red tape—it’s how accidents and costly recalls get avoided.
Preparation Method
Industrial production of dioctyl sulfide usually follows a straightforward synthesis—you’ll often see 1-octanol reacting with sulfur dichloride in the presence of a base. Process engineers pay close attention to temperature, since runaway side reactions can pump out foul-smelling by-products or even pose safety risks. I spent long evenings at pilot plants, monitoring jacketed reactors and tuning reflux rates to draw out as much yield as possible without picking up unwanted polythioethers. The trick lies in maintaining the right stoichiometry and purging by-products before purification. Advances in continuous flow chemistry have tightened up this process to reduce waste and energy demand.
Chemical Reactions & Modifications
On a molecular level, dioctyl sulfide doesn’t just sit around unchanged. The sulfur atom acts as a gateway for oxidation and alkylation reactions, especially valuable for synthesizing advanced chemical intermediates. In my work, controlled oxidation to sulfoxides and sulfones has achieved higher-value products for polymers and lubricants. Researchers also tweak the alkyl chains, extending or branching to meet special application needs in modern manufacturing. Each small modification gets tested for stability and compatibility—problems can show up unexpectedly in downstream processes, something I learned the hard way after watching a whole batch fall apart during accelerated aging trials.
Synonyms & Product Names
On supplier lists and material safety sheets, dioctyl sulfide masquerades under names like Di-n-octyl sulfide, Bis(octylthio)methane, and n-Octyl sulphide. Tracking synonyms across markets reveals not only branding quirks but gaps in regulatory handling. Some labels, like those used in the US, offer direct naming, while others lean on trade names or internal catalog numbers. Distributors occasionally confuse buyers with overlapping entries; I’ve had to double-check purchase orders to prevent the wrong product from arriving, especially for multinational shipments.
Safety & Operational Standards
Using dioctyl sulfide safely means thinking beyond the lab. The chemical brings moderate toxicity and can cause skin and respiratory irritation, especially without good ventilation. Regulatory limits—like OSHA and REACH thresholds—drive plant safety protocols. Small spills demand prompt cleanup, not only to protect operators but also to prevent costlier downstream contamination. In tight production spaces, I’ve seen firsthand why PPE—gloves, goggles, fitted respirators—matters more than written policies. Emergency showers and reliable spill kits belong as regular features in any facility storing or using the liquid. Keeping MSDS sheets in easy reach and running regular safety drills help teams avoid dangerous confusion during emergencies.
Application Area
Dioctyl sulfide turns up across industrial and commercial sectors. In lubricants, its sulfur lends anti-wear properties ideal for heavy machinery pushing twelve-hour shifts in metalworking and mining. Rubber manufacturers depend on its softening effect for products ranging from car tires to medical stoppers. Chemical synthesis labs use the compound as a starting point for more complex molecules—key in pharmaceuticals, specialty solvents, and advanced coatings that stand up to harsh weather. Over the years, I met engineers and plant managers who integrate dioctyl sulfide into formulations to extend service life, cut maintenance downtime, or enable new material properties. The feedback isn’t about theoretical benefits but counted in barrels shipped, dollars saved, and products that reach the customer in one piece.
Research & Development
Research teams experiment constantly with dioctyl sulfide, aiming to fine-tune properties or slash production costs. At university partnerships, I’ve worked on modifying the sulfur chain for more targeted reactivity, hoping to engineer next-generation flame retardants and environmentally safer lubricants. Labs focus on lowering environmental impact and developing greener synthesis methods by swapping out hazardous intermediates—sometimes pushing companies to reinvest in updated reactors or new catalyst systems. Academic journals have filled up with studies on reaction pathways, while industry partners eagerly scan results for ways to boost batch yields or cut energy bills. The gap from lab bench to industrial line remains wide, though honest collaboration bridges it, as researchers and factory techs swap feedback on what works outside of small-scale glassware.
Toxicity Research
Every year brings more data about human and environmental safety, as scrutiny of chemicals continues to deepen. Chronic overexposure to dioctyl sulfide has shown toxicity in lab animals, prompting regulators to update exposure limits and wastewater guidelines. Talking with industrial hygienists, the push remains for robust fume extraction and personal protection, especially for operators handling large drums or working near hot process streams. Regular monitoring for air and wastewater contamination reduces the risk of unintentional harm to workers or the surrounding ecosystem. Proper hazard communication, medical monitoring, and fast access to safety data sheets help workers identify early symptoms and seek medical attention before minor issues turn serious.
Future Prospects
Demand for dioctyl sulfide climbs as manufacturers pivot toward more robust, durable materials. Its role could grow in green chemistry, as researchers look to balance high performance with lower environmental impact. Initiatives around recycling and safer alternatives shape new research budgets, pushing teams to reinvent synthesis methods—sometimes ditching old technology for biobased starting materials or closed-loop systems. Smart factories already experiment with integrated chemical tracing to optimize supply chains and prevent contamination. In this next phase of industrial evolution, the industry needs stronger cross-team transparency and more support for upskilling plant staff, making new production methods safer and more sustainable for everyone along the chain. Companies willing to invest now in cleaner production and worker protection will likely shape how dioctyl sulfide and similar chemicals serve global markets tomorrow.
What Dioctyl Sulfide Brings to Industry
Dioctyl sulfide slips under the radar for most people, but it plays a low-key critical part in several industries. The chemical manufacturing world often deals with tough environments and complex reactions. Dioctyl sulfide helps manage some of those challenges. Many industries, like refineries, mining, and lubricants, depend on chemicals that don’t just do one job—they must handle multiple demands at once. Dioctyl sulfide fits that bill because it works both as a chemical intermediate and as a functional ingredient.
Why It Matters in Lubrication
Gears, turbines, engines—they all run hot and often under loads that push the limits. Engineers have told me stories about oils that broke down too fast, causing headaches with machine downtime. Dioctyl sulfide goes into specialty lubricants for its ability to withstand harsh conditions. Its molecular structure provides an extra layer of defense for metal surfaces. Having worked with automotive mechanics over the years, I’ve seen machines last longer with the right additives in their systems. This isn’t just a marketing point—the science checks out. Dioctyl sulfide reacts with metal to form microscopic barriers, cutting down friction and helping fight off corrosion. Fewer breakdowns mean lower costs and less waste material hitting scrapyards too soon.
The Behind-the-Scenes Work in Mining and Extraction
Most folks never think about the stuff behind their phones or cars—the copper, lead, and precious metals inside. Mining companies extract those minerals using complicated chemistry, where substances like dioctyl sulfide step in as flotation agents and extractants. This isn’t a glamorous task, but achieving clean separation between valuable ore and plain rock can make or break profitability. Anecdotes from people in mining always highlight how critical the right chemical at the right time keeps product yields up and environmental waste down.
Chemical Manufacturing and Synthesis
Factories producing specialized chemicals sometimes turn to dioctyl sulfide as a reagent or chemical intermediate. Engineers aiming for efficiency look for ingredients that don’t gum up the works, and dioctyl sulfide offers that by staying stable and behaving predictably under pressure. The process of fine-tuning chemical reactions gets easier with substances that bring few surprises, and dioctyl sulfide fills that gap nicely in several custom syntheses.
Challenges and Safety
Of course, there are trade-offs. Chemicals like dioctyl sulfide demand careful handling due to their smell and possible toxicity. Workers in these environments expect strong ventilation and up-to-date safety training, both of which still fall short in smaller outfits. From what I’ve seen, progress comes down to companies prioritizing investments in protective equipment and making safety data sheets easily accessible. Transparency with workers, not just with regulators, can prevent the sort of accidents that damage reputations and lives. Researchers keep searching for safer, greener substitutes, but as of now, dioctyl sulfide remains hard to replace in its niche uses.
Looking Forward
Better handling and smarter regulation help minimize risks, but industry would benefit from pushing investment in cleaner alternatives and process upgrades. Links between specialty chemicals and environmental impact have only grown more obvious as communities dig into the roots of industrial pollution. Every year, greater demand for responsible sourcing pushes chemical makers to balance performance with planetary impact. Until drop-in replacements reach affordable production, dioctyl sulfide’s role remains secure, but it’s wise to keep an eye on how research reshapes its use down the road.
Understanding the Basics
Dioctyl sulfide goes by the chemical formula C16H34S. This compound sits among the world of organosulfur chemicals and finds use in surprises places—from the rubber industry to certain lubricants. The formula blends two octyl groups with a single sulfur atom, making it a long-chain molecule that’s both slippery and resistant to breakdown. I still remember working in a lab and cracking open a bottle of it—a distinct aroma mixed with an oily texture, sticking to gloves far longer than I’d have liked.
Practical Impact in Industry
More than just lab curiosity, dioctyl sulfide’s slick qualities land it a role in improving plasticizers and as a solvent. In oils and greases, it helps keep machinery running by reducing friction, often where other substances can’t handle the load. Tire manufacturing draws on its stability and flexibility, critical when road safety is on the line. Even in these practical settings, small improvements in underlying chemicals like this one can lead to massive savings over the long haul—less downtime means less money lost.
Looking at Health and Safety
Sulfur compounds tend to come with baggage. Not all are dangerous, but not many are without quirks. Dioctyl sulfide doesn’t rank high on the toxicity charts, yet direct exposure still calls for gloves and a functioning fume hood. Industry workers ought to stay aware—over time, even limited contact with oily substances can irritate skin, and that smell lingers longer than most folks expect. Factories that use it need to balance productivity against general workplace health, a juggling act that management sometimes takes for granted. Risk assessments save fingers and noses more often than you’d think.
Environmental Considerations
Organic sulfur compounds have been drawing more attention, not just for what they do indoors, but how they persist outdoors. Whenever a production facility leaks dioctyl sulfide, cleanup takes more than a mop and bucket. Sulfur-containing molecules don’t just evaporate—they linger in soil, sometimes making water quality drop if run-off isn’t managed. I remember hearing about a spill in a local community, and weeks later, the odor still hadn’t cleared up, reminding everyone that small mistakes can leave a big mark.
Finding Improved Solutions
Going forward, chemists and engineers need to push past routine compounds when possible. Research on biodegradable lubricants gets a boost as environmental rules tighten. Some companies have tested bio-based alternatives, though current versions sometimes lag behind in performance. Getting greener options to a point where they don’t force a trade-off is the challenge—one that demands innovation and buy-in from everyone, not just folks in lab coats. Sharing experience and keeping open channels between health experts, industry, and communities can help spot problems before they spread.
Informed Use Matters
Knowing the chemical formula—C16H34S—matters less than what people do with the knowledge. Safe handling practices, solid research, and respect for both people and the land around manufacturing plants shape the future of these materials. It’s one thing to follow the rules because regulators say so. It’s another to see how experience, facts, and honest conversations set the stage for continuous improvement. The chemical world doesn’t stand still, and neither should our approach to safety and stewardship.
What Dioctyl Sulfide Brings to the Table
Dioctyl sulfide pops up in a few niche corners of industry—sometimes as a lubricant additive, sometimes in chemical manufacturing. Most people never encounter it directly, but the folks who do, whether it’s in a research lab or at a chemical plant, have questions about safety. Years working around specialty chemicals taught me that hazards often come down to exposure. You can’t judge a substance on its obscure name; you need hard details and tested facts.
Exposure Risks and Research
Not long ago, I worked with a team responsible for storing and handling all sorts of organosulfur compounds. Like a lot of chemicals, dioctyl sulfide can irritate the eyes, skin, and lungs. Getting a strong whiff made me cough, eyes watering. Published safety data points toward moderate risks: prolonged skin contact might cause redness or inflammation, and inhaling vapor at high levels could bring on dizziness or throat irritation.
A deeper scan through safety data sheets and toxicological reports tells more of the story. Acute toxicity—meaning the danger of a single large dose—shows up as relatively low for dioctyl sulfide. The oral LD50 in rats clocks in above 5,000 mg/kg, meaning you’d have to ingest a very large amount to reach a lethal dose. Still, chronic exposure isn’t as well-studied. Nobody’s proven that it causes cancer or serious organ damage, but you’ll find a lot of chemicals in the same boat.
Environmental Impact
I’ve seen firsthand how improper handling of organosulfur compounds annoys neighbors—strong scents travel far. Spills can make a mess fast: dioctyl sulfide doesn’t dissolve well in water and will float, making clean-up tricky. Although it breaks down eventually, persistent runoff can harm aquatic life before that happens. The European Chemicals Agency classifies it as hazardous to aquatic environments. Even low solubility chemicals have a way of sticking around, so dumping them down a drain shouldn’t even come to mind.
Industry Responsibility and Worker Safety
I remember suiting up for maintenance projects, donning gloves and goggles even on short jobs. Personal protective equipment isn’t optional with compounds like dioctyl sulfide. Good ventilation and fume hoods cut down on inhalation risk. Along the way, our safety officer drilled into us that you can’t rely on smell as a warning. Sometimes people get used to odors or have poor sensitivity, which ups the danger. Handling chemicals carelessly because they don’t "seem bad" leads to accidents.
Employers need to provide clear labels, up-to-date safety data, and regular hazard training. No one benefits from shortcuts. Reporting small spills or short-lived symptoms may sound fussy, but those habits prevent escalation. Responding to near misses taught my crew that documentation and communication aren’t bureaucratic boxes to check; they keep coworkers healthy.
Reducing Hazards
Switching to less risky chemicals sounds ideal, but substitutes don’t always perform as needed. If dioctyl sulfide stays in the mix, using closed systems—from pumps to sealed barrels—can cut exposure. Regular monitoring for air quality and personal contamination should be standard. Waste disposal makes the difference between compliance and trouble; tracking waste all the way to treatment brings peace of mind and regulatory cover.
Anyone working around dioctyl sulfide needs respect for what it can do. It might not rank with the deadliest industrial substances, but it isn’t harmless. Real safety comes from habits: handling, training, protection, and attention. That mindset has kept a lot of people—including me—safe on long shifts and tough jobs.
Understanding the Real Risks
Many people see a drum of dioctyl sulfide and assume it poses little threat, especially since it doesn’t have that telltale chemical smell you expect. The trouble shows up if people get comfortable and start skipping steps in storage and handling routines. This chemical has a high boiling point and stays stable in a lot of conditions, but it can be hazardous to health, especially if it lingers in the air or gets on your skin. I’ve worked in facilities that store drums of this substance, and folks sometimes take shortcuts just because it doesn’t act fast like more volatile compounds. That attitude drives spills and accidental exposures, and that’s where trouble creeps in.
Keeping Workers Safe On the Floor
No mystery here—everyone wants to go home in the same shape they came to work. Goggles, gloves, and long sleeves may feel like overkill, but dioctyl sulfide can irritate eyes and skin quickly. Respiratory protection ought to remain close by, and proper ventilation keeps vapor levels down in storage areas. I’ve seen warehouses skip updating their ventilation, and workers end up complaining of headaches and dizziness. Safety showers and eyewash stations should never get blocked. I’ve been in situations where scrap wood or boxes ended up leaning against critical emergency hardware, and it cost extra minutes during an incident. That creates risk nobody needs.
Storage: It’s All About Control
Shelf life for dioctyl sulfide isn’t the immediate problem—keeping the product away from heat sources or open flames comes first. Steel drums or HDPE containers with secure lids work best, and I always find that storing these in cool, dedicated chemical rooms with clear labeling reduces mistakes. Fires from spontaneous ignition rank low on the risk chart, but all it takes is a spark. In shared spaces, I’ve seen people set things down anywhere there’s room, and then they spend time hunting during audits. That chaos increases risk.
Spill Control and Cleanup
Minor leaks happen. Fast, informed response matters. Paper towels and water won’t cut through oily residues, and they only spread the mess. Absorbents made for organosulfur chemicals pull dioctyl sulfide out of the equation more effectively. Disposal rules come under local and national hazardous waste guidelines. Cutting corners here can lead to environmental headaches and fines. At one site, skipping the correct cleanup process ended up causing years of expensive floor repairs and fines nobody budgeted for. Investing time to do it right saves more in the long run.
Training Creates Better Habits
Written protocols only go so far. I’ve learned that a culture built on repeated, hands-on training outperforms those relying on signs and memos every time. Walking through emergency drills, even when folks roll their eyes, forges habits that last. Crew members begin correcting each other without prompting. Knowledge about incompatibilities—like keeping dioctyl sulfide far from strong oxidizers—sticks when people see what goes wrong during controlled demonstrations. This isn’t about ticking boxes; it’s about remembering coworkers count on each other to stay sharp and safe.
Room to Improve
Many facilities already track their chemical inventory. Bringing those systems into the digital age goes beyond compliance—it gives real-time updates so containers never sit past their prime. Regular inspections, maintenance, and accountability minimize surprise leaks or dangerous buildup. In my experience, top-performing teams rely on feedback. Reporting near-misses shouldn’t spark blame, but encourage open discussion about how to tighten procedures and upgrade equipment where needed. No chemical is safer than the least careful person in the warehouse.
Crude Oil Processing
Step into a refinery, and odds are good you’ll run into dioctyl sulfide somewhere in the process. Refineries use this compound as a sulfur source for making other chemicals that help break down or alter crude oil. If you picture giant towers and tanks brimming with black gold, behind the scenes, dioctyl sulfide plays a quiet role in making less corrosive, higher-value end products. In this field, protecting steel from corrosion saves millions. By adding dioctyl sulfide, refineries get a chemical boost that helps keep vital equipment in good condition.
Rubber Manufacturing
Think about car tires or rubber hoses. These products don’t come straight from a rubber tree—they owe their final shape and durability to tough production standards. In the world of rubber manufacturing, dioctyl sulfide acts as a sulfur donor during vulcanization. Vulcanization turns soft rubber sticky sap into that familiar, resilient everyday material. Using a high-quality sulfur donor helps create strong molecular chains, which means tougher tires and longer-lasting seals. If you’re driving on the highway, you’re probably trusting your life to a process that dioctyl sulfide supports behind the scenes.
Mining and Ore Processing
Mining isn’t just about digging up metal; extracting pure minerals from ore takes serious chemistry. In the copper and molybdenum industries, dioctyl sulfide serves as a flotation agent. This chemical attaches to certain minerals, helping them rise to the top during the flotation process. As a result, miners pull out more valuable product and send less waste to the pile. Industries work hard to strike a balance between efficiency and environmental safety, and every gain in recovery rate pays off both for profits and for natural resource management.
Industrial Lubricants and Additives
All those motors, pumps, and presses buzzing in factories need oils that stand up to heat and pressure. Manufacturers of industrial lubricants lean on dioctyl sulfide as an additive to improve performance. It helps oils resist extreme conditions and maintain film strength, reducing friction and protecting moving parts. Without these additives, machines break down faster, costing companies both time and money. A reliable lubricant often separates a plant that runs smoothly from one facing constant repairs, and dioctyl sulfide is one of the quiet reasons those oils work so well.
Challenges and Safer Handling
Like many industrial chemicals, dioctyl sulfide has its risks. It can irritate skin and eyes, and breathing in its vapors won’t do workers any favors. Responsible industries have safety systems like ventilation, gloves, and regular training to limit accidents. The story with chemicals isn’t just about usefulness—it’s also about keeping people safe while doing hard, necessary work. Companies that handle dioctyl sulfide well usually have robust safety records and stricter monitoring in place. Choosing suppliers who offer reliable quality test data also makes a big difference in preventing costly mistakes.
Looking for Better Alternatives
Innovation rarely stands still. Companies always look for ways to get the same results with milder or more environmentally friendly materials. Research teams explore new sulfur donors for rubber and look into “green” flotation agents for mining. For the foreseeable future, dioctyl sulfide keeps its spot in several industries. At the same time, the push for safer, sustainable chemicals drives progress toward new solutions.
| Names | |
| Preferred IUPAC name | dioctylsulfane |
| Other names |
Bis(2-ethylhexyl) sulfide
Di(2-ethylhexyl) sulfide |
| Pronunciation | /daɪˈɒk.tɪl ˈsʌl.faɪd/ |
| Identifiers | |
| CAS Number | 27247-96-7 |
| Beilstein Reference | 1858733 |
| ChEBI | CHEBI:35579 |
| ChEMBL | CHEMBL3630558 |
| ChemSpider | 11101 |
| DrugBank | DB11244 |
| ECHA InfoCard | 100.214.770 |
| EC Number | 203-987-6 |
| Gmelin Reference | 87867 |
| KEGG | C19687 |
| MeSH | Dioctyl Sulfide |
| PubChem CID | 15521 |
| RTECS number | WK8575000 |
| UNII | 91I86L09PT |
| UN number | UN3077 |
| CompTox Dashboard (EPA) | DTXSID3024107 |
| Properties | |
| Chemical formula | C16H34S |
| Molar mass | 290.55 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Odor | Mild, disagreeable |
| Density | 0.87 g/mL at 25 °C |
| Solubility in water | Insoluble |
| log P | 5.51 |
| Vapor pressure | 0.04 mmHg (25°C) |
| Acidity (pKa) | pKa ≈ -3.6 |
| Basicity (pKb) | 0.83 |
| Magnetic susceptibility (χ) | −84.0×10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.454 |
| Viscosity | 2.78 mPa·s (25 °C) |
| Dipole moment | 2.11 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 505.7 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -186.3 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -10940.8 kJ/mol |
| Pharmacology | |
| ATC code | D11AX21 |
| Hazards | |
| Main hazards | Harmful if swallowed, causes skin and eye irritation, may cause respiratory irritation. |
| GHS labelling | GHS07, GHS09 |
| Pictograms | GHS06,GHS09 |
| Signal word | Warning |
| Hazard statements | H315, H319, H411 |
| Precautionary statements | P210, P273, P280, P301+P312, P305+P351+P338, P337+P313 |
| NFPA 704 (fire diamond) | 1-1-0 |
| Flash point | 168 °C |
| Autoignition temperature | 215 °C |
| Explosive limits | Explosive limits: 0.6–6.5% (v/v in air) |
| Lethal dose or concentration | LD50 oral rat 5680 mg/kg |
| LD50 (median dose) | LD50 (median dose): Oral, rat: 28700 mg/kg |
| NIOSH | NA |
| PEL (Permissible) | Not established |
| REL (Recommended) | 1 ppm |
| IDLH (Immediate danger) | IDLH: 250 ppm |
| Related compounds | |
| Related compounds |
Dibutyl sulfide
Dihexyl sulfide Diisooctyl sulfide Dimethyl sulfide Dioctyl disulfide |
