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Acetonitrile-D3 didn’t come out of nowhere. The roots go back to the post-World War II boom in both organic chemistry and nuclear magnetic resonance (NMR) technology. As scientists first understood the power of isotopic labeling, the demand for deuterated compounds spiked. In the early days, researchers mostly wanted heavy water, but it wasn’t long before the real push went to solvents crucial for spectroscopic techniques. I remember reading early NMR studies that had to make do with low sensitivity and lots of background noise because the solvents contained regular hydrogens. That noise wrecked spectra. By the 1970s, chemists found ways to swap out hydrogens for deuterium without ruining the core chemical structure. Acetonitrile-D3 became one of the go-to solvents for those wanting clearer NMR results, especially as the spectrometers grew more precise and as new types of molecules called for different solvents. Having a deuterated version allowed scientists to see the real data, not just noise from the solvent.
Most folks in a research lab have reached for a bottle of Acetonitrile-D3 at some point. It looks like ordinary acetonitrile, but the label says “D3” because three hydrogens have been swapped out for deuterium—a heavier cousin. This simple switch has a massive impact in spectroscopy. The stuff stands out by not interfering with the kinds of protons NMR picks up. Less interference means sharper signals. People often take that for granted now, but I’ve seen the difference myself: run a 1H NMR in regular acetonitrile and the peaks blur, the baseline folds, and resolving details in your compound’s structure gets tricky. With the D3 version, those hiccups almost vanish. This small difference makes Acetonitrile-D3 invaluable for chemists, biochemists, and even those working in pharmaceutical development, always chasing reliable, reproducible data.
Acetonitrile-D3 carries the same backbone as regular acetonitrile, pooling clear and colorless, but it feels a bit heavier due to the swapped atoms. It stays liquid at room temperature, evaporates quickly, and mixes with water and most organics without a hitch. The triple deuterium mark comes through in its molecular weight and its specific NMR signals—offering a clean range where its contribution won’t muddy spectra. The boiling point runs just over that of regular acetonitrile, and its high dipole moment keeps it a polar solvent, letting it dissolve a broad library of compounds. A lot of this comes down to those tiny shifts that deuterium brings. In the everyday lab, those small property bumps mean you can rely on it to do its job, batch after batch.
Students and veterans alike have spent hours poring over the fine print on chemical bottles. Acetonitrile-D3 usually comes with a heavy emphasis on isotopic purity, often touting figures over 99 atom percent deuterium. I’ve seen how a single percent less purity can clutter spectra with rogue proton signals. You buy these chemicals by the gram or milliliter, and the best suppliers give you a breakdown of trace water, acidity, or basicity, all crucial for sensitive NMR work. Those labels aren’t for show—they guide the experiment, especially if your target molecule reacts with even a trace of acid or base. The bottle also needs clear warning statements, especially since acetonitrile, deuterated or not, packs some health hazards. Trust in that label doesn’t come cheap, but anyone running delicate NMR knows it saves time, headaches, and reruns.
Making Acetonitrile-D3 is a job for precision chemistry. Early on, folks relied on methods like hydrogen–deuterium exchange, working with D2O under acidic or basic conditions to coax hydrogens to jump ship. I’ve read about different catalytic tricks used to swap those atoms while keeping the skeleton of the molecule tight. Other routes begin with deuterated feedstocks, building the molecule from the bottom up. The process demands sterile lines, ultra-pure starting materials, and careful distillation since contaminants rob you of purity or spike up the cost. From what I’ve seen in published methods, even one slip means a bottle that’s good for little besides process testing. That attention to detail has pushed advances in both yield and isotopic enrichment, keeping up with the demands of new NMR technologies and broader applications.
Chemists have always tried to stretch the utility of basic compounds, and Acetonitrile-D3 is no exception. While it serves mainly as a solvent, I’ve seen it crop up in studies as a moderate nucleophile, helping probe reaction pathways where deuterium labeling unlocks hidden mechanism details. Its triple-labeled structure has proven handy for tracking solvent exchange, tautomerism, and kinetic isotope effects. Some teams use it to make more complex deuterated molecules, testing the resilience of other functional groups under exchange conditions. In every case, Acetonitrile-D3’s value comes down to its ability to show researchers what regular isotopes can’t. It reveals just where atoms move during a challenge, without crossing the line into reactivity that would wreck sensitive samples.
Across the scientific world, Acetonitrile-D3 goes by several names, but most folks know it by its International Union of Pure and Applied Chemistry (IUPAC) denomination: acetonitrile-d3 or methyl-d3 cyanide. Chemists working with catalogs may spot names like fully deuterated acetonitrile or CD3CN, the latter reflecting its structure. Different vendors label it with a range of nomenclature, but the community seems to agree on those short-hand terms. While names change from paper to paper, the science underneath keeps that continuity, helping collaboration across research teams and even languages.
Handling Acetonitrile-D3 feels routine to those in the field, but respecting its hazards always stays front of mind. Deuteration doesn’t remove risks; the compound remains flammable, volatile, and can be toxic, especially in poorly ventilated labs. Symptoms creep up fast: headaches, dizziness, even serious health issues for those caught unaware. Over my years in shared labs, I’ve seen how established safety protocols—fume hoods, gloves, goggles—make all the difference. Teams run regular drills, keep spill kits on hand, and never skimp on training new recruits. In the age of increased regulation, waste management also takes center stage. Used acetonitrile, deuterated or not, ends up as hazardous waste. Institutions work with certified disposal agencies, tracking every gram for compliance and worker safety. This practical focus on health and safety walks alongside the glamor of research. No discovery is worth a preventable accident.
Acetonitrile-D3’s biggest role lies in analytical chemistry, especially NMR spectroscopy. NMR runs on careful data, and this solvent opens new windows into how molecules behave. Structural analysis, reaction monitoring, and even purity checks benefit from its clean background. Outside classic organic and inorganic chemistry, it pops up in biochemistry for studying protein-ligand interactions or nucleic acid dynamics. The pharmaceutical industry depends on deuterated solvents to check drug candidates for hidden impurities and subtle metabolic paths. Environmental labs sometimes use it in tracking trace organics. Catching a glimpse of these diverse uses reassures me how a tiny isotopic tweak helps solve real-world questions, bridging the gap between bench chemistry and wider industry needs.
Research never stands still—Acetonitrile-D3 keeps popping up as new methods and technologies evolve. Teams continue to refine its synthesis, pushing the envelope of isotopic purity and lowering costs. There’s steady pressure to curb environmental impact during manufacture, especially as green chemistry grows more central. Analytical chemists keep seeking solvents with even less background or broader solvent power, while those in the field chase after isotope effects in ultrafine detail. I’ve read how next-generation NMR pushes at the physical limits: higher field strengths, multidimensional spectra, even quantum mechanical corrections. Sometimes the focus lands on automating synthesis or recycling deuterated solvents, both to hold down expenses and slash chemical waste. Industry and academia play a delicate balancing act, trying to deliver on safety, cost, and performance—each advance pushing the field forward by small steps.
The toxicity picture for Acetonitrile-D3 shares much with its hydrogen-based cousin. Swapping deuterium for hydrogen doesn’t erase the fundamental health risks. Inhalation, ingestion, or skin contact can lead to acute symptoms—from headaches and nausea to seizures or life-threatening outcomes. Scientists have spent years mapping out the fine details, measuring dose-response curves and long-term effects with both hydrogenated and deuterated forms. Animal studies and cell culture experiments offer insights, but they also flag the need for careful handling at every stage. Making this knowledge widely known—through education, clear signage, and regular lab meetings—builds a culture of responsibility. The data reflect the real world: those who respect the hazards stay out of trouble.
Looking ahead, Acetonitrile-D3 will keep its place in research as new frontiers in spectral technology and analytical chemistry open up. Researchers push for greener, cheaper methods of production, both for cost and environmental reasons. If future solvent systems increase demand, suppliers will need to dial up efficiency and sustainability while ensuring users don’t lose out on purity or reliability. Advances in analytical instrumentation—portable NMR, next-generation mass spec—could stretch the limits of what this solvent supports. As more industries lean on detailed structural data, more requests crop up for wider access and easier recycling of deuterated solvents. Open questions linger about making safer, more biodegradable versions without sacrificing utility. As someone in the field, I see each small leap in this chemical’s evolution as proof that even the simplest molecules—tuned just right—drive scientific progress forward and keep doors open to future discovery.
Acetonitrile-D3 might not roll off everyone’s tongue, but you’ll find it quietly keeping some of the world’s most sensitive scientific work on track. Swap out three hydrogens for deuterium, and you get a molecule with a small but important difference. That tweak turns regular acetonitrile into a powerful tool for researchers working with nuclear magnetic resonance spectroscopy—NMR, for short. This isn’t a tweak for the sake of it; it unlocks answers to chemical puzzles that can’t be solved any other way.
Researchers often grab a bottle of acetonitrile-D3 when they want to look closely at how molecules behave. NMR relies on magnets and radio waves to probe the structure of compounds. But for scientists to get a clear picture, the solvent—the liquid they dissolve their samples in—can’t muddy the waters by giving off its own signals. Deuterium doesn’t produce signals in the same spot as regular hydrogen, so when deuterated solvents like acetonitrile-D3 get used, the sample’s voice rings out clearly while the background stays quiet.
In medicinal chemistry, figuring out what’s going on at the atomic level can mean the difference between a failed experiment and a major breakthrough. My own work in a university lab taught me respect for attention to detail. Every chemical’s “fingerprint” matters. A trace of the wrong solvent, one that clutters the spectrum, and you’re left guessing at best. That’s why labs almost always invest in high-quality deuterated solvents. It’s not about luxury; it’s about getting answers you can trust.
What often goes unnoticed is how a niche chemical like this affects much bigger industries. Pharmaceutical companies depend on NMR data to confirm that drug molecules have the right structure and purity. Without accurate solvents, mistakes can creep in, and those mistakes can cascade all the way to clinical trials. Acetonitrile-D3 helps chemists avoid such pitfalls.
Beyond drugs, it supports advanced materials research, where new polymers or catalysts get scrutinized down to the last atom. Whenever new chemicals are created, their safety and efficacy hinge on solid structural data. That’s impossible to get if solvents overwhelm or interfere with the delicate measurements NMR provides.
Quality and purity stand out as big concerns. Manufacturers of deuterated acetonitrile know that impurities bring false readings. Labs count on strict standards to minimize contamination. As demand keeps growing, especially from biotech, keeping supplies pure and affordable brings on supply chain headaches. I’ve seen projects stall while we waited for fresh shipments—no chemistry gets done while everyone checks and double-checks batch numbers and certificates of analysis.
Sourcing raw deuterium isn’t simple. It takes energy-intensive processes, which sometimes leads to price swings or even shortages. These issues can punch right through to academic grants or startup budgets. Finding recycling options or more efficient production methods could keep costs in check and ensure scientists can keep pushing forward, no matter the economic winds.
If researchers lost access to acetonitrile-D3, or had to settle with cut-rate material, the ripple would spread from university benches to the medicines in our pharmacies. This little molecule stands as a silent helper, making discoveries clearer and safer. Supporting its reliable, sustainable production serves not just science but everyone touched by the work of modern chemistry.
Acetonitrile-D3 turns up often in the world of analytical chemistry, especially inside research labs where every contaminant can twist results. Here, the “D3” tag marks three hydrogen atoms swapped for deuterium. The real story starts with how clean this deuterated solvent is and what that means for experiments, especially in nuclear magnetic resonance (NMR) or mass spectrometry.
Packing high purity isn’t just something sales reps trumpet—it impacts every step of your measurement. Markets serve up Acetonitrile-D3 at purity levels from 99.8% right up to 99.96% (and sometimes even tighter specs). That sounds dry, but a fraction of a percent can leave you cleaning up noise in your spectra. Moisture, ordinary acetonitrile, or leftover byproducts can sit in the bottle, ready to block peaks or add ghost signals that muddy up data. Labs focused on cutting-edge trace analysis often shell out extra for 99.96% or higher, not out of vanity, but because trace water or hydrogen signals become a real headache when looking for low-level signals.
Small things like a few parts per million of regular hydrogen acetonitrile can start to look huge on sensitive NMR. That extra signal forces chemists to spend more hours figuring out what’s real and what’s background. If you’re spinning up a new method or publishing, a purity slip can toss entire datasets. Impurities also drag in headaches with storage—the purer the solvent, the more careful you have to be about capping bottles and avoiding humidity.
Top chemists and pharmaceutical researchers invest in high-purity Acetonitrile-D3 for a reason. Journal papers from reputable labs often detail the make and grade of solvents, because peer review checks even small details in reproducible work. The American Chemical Society and ISO set out minimum specifications for purity to make sure global labs can compare apples to apples. If a team runs routine water testing with deuterated solvents, tiny impurity bumps can wipe out confidence in parts-per-billion results. In proteomics and small molecule studies, just 0.05% impurity can turn an expected peak into a puzzle, wasting both time and money.
Labs can take simple steps to catch problems early. Running a quick background scan in NMR before real experiments helps spot issue batches. Keeping tight inventory records flags bottles that have been opened too long, picking up water from the air. In my own work, just one subpar bottle forced a week of re-testing and lost chemicals—my group started requesting certificates of analysis before opening anything new. Finding suppliers with transparent test results and tight batch-to-batch consistency makes daily lab work run smoother.
For researchers, getting stuck with a low-purity bottle feels like finding grit in the engine. The price tag on ultrapure Acetonitrile-D3 might cause sticker shock, but the cost of repeat runs, weird anomalies, and sleepless nights spins far higher. In an age of big data and tough reproducibility standards, high chemical standards don’t feel optional—they look essential. If scientists don’t set the bar high enough on purity, the stories their data tell can unravel before anyone even starts listening.
Working in a chemical lab, you get close with chemicals like Acetonitrile-D3. This stuff is more than expensive; it’s the backbone of NMR and mass spec work in research and quality control. Mishandling it eats money, wastes time, and leaves a mess nobody wants. Labs run best when everyone treats chemicals with the respect they deserve, and this comes from storing reagents the right way.
Acetonitrile-D3 isn’t just any solvent. Researchers pick it for its high purity and low background noise. Its deuterated form carries a price tag that makes you wince, and contamination or evaporation means flushing money down the drain. It’s used in trace analysis, and just a breath of moisture or a whiff of air alters your data or your next run. That alone gives storage a real, practical significance.
Heat, air, and water ruin Acetonitrile-D3. The bottle lives in a cool, stable spot, most often a flammables cabinet or dedicated refrigerator. I once saw someone stash it above a lab bench for “quick access.” Bad call — strong temperature swings and light exposure broke its seal, left residue in chromatography runs for weeks, and caused a morning’s worth of troubleshooting.
Moisture creates all kinds of trouble. Don’t trust normal bottle stoppers — you want PTFE-lined seals, and silica gel packs near the bottle help mop up sneaky condensation. Tight sealing keeps out both water and air, and the habit of checking lids after every use always pays off. Carelessness leads to hydrolysis, and there’s nothing as frustrating as phantom peaks appearing during analysis.
Vapors from Acetonitrile-D3 carry real health risks. Inhalation causes dizziness and headaches, and that’s something you remember even years later. Good ventilation matters — always open bottles in a fume hood or with good airflow. Gloves, safety goggles, and a lab coat are non-negotiable. An absorbent mat under the bottle handles small spills before they spiral into bigger problems.
Each bottle needs a clear, accurate label with the purchase date. Age matters; chemicals degrade, especially if you’re working in a humid city or in summer months. Most labs I’ve worked in set up inventory spreadsheets or used QR codes for tracking. This system spots old stock before someone ruins days of work with a contaminated reagent.
Disposal rules keep people and the environment safe. Never dump solvents down the drain — hazardous waste pickup takes effort, but cutting corners costs more in fines and risk. If a bottle’s gone off, the chemicals inside should go into the waste containers meant for organic solvents, not the regular trash.
Consistent care in storing chemicals like Acetonitrile-D3 helps avoid ruined experiments and unnecessary danger. Funding and regulatory oversight highlight safety, but the best labs run on habits — keeping bottles sealed, inventory up-to-date, and storage areas tidy. My own missteps over the years have taught me that the small routines you follow every day are what keep chemicals pure, people safe, and budgets under control.
Every solution poured in a lab or stuck in a sample tube starts with one question: what’s inside? For Acetonitrile-D3, this isn’t just any question. This compound spells out purity and clarity for researchers tailoring experiments across chemistry and pharmaceutical development.
Acetonitrile-D3 swaps regular old hydrogen atoms for something a bit heavier: deuterium, an isotope of hydrogen. This twist turns the standard CH3CN into CD3CN. It’s still recognizable as acetonitrile, but those deuterium atoms—each with an extra neutron—bump the molecular weight and impact the way molecules behave in NMR spectroscopy and other analytical techniques.
Every time I see a bottle labeled “Acetonitrile-D3” in the lab fridge, I remember its main claim to fame: helping scientists see details that regular solvents just blur together. For NMR spectroscopy, routine acetonitrile introduces signals from its hydrogens. Deuterium comes to the rescue instead, staying silent in proton NMR readings. That means clean spectra—no irritating interference—making it straightforward to focus on what actually matters: the sample, not the solvent.
The molecular formula CD3CN isn’t some esoteric jargon. It’s shorthand for a tool that keeps research running smoothly. Without it, chemists risk lost time and misleading data. Each deuterium atom plays its part, providing a non-reactive background in NMR tubes, especially vital in complex mixture analyses or during the development of new pharmaceutical compounds.
Safeguarding the reliability of chemicals like Acetonitrile-D3 means controlling the variables. Water or regular acetonitrile sneaking in can shift results, sending weeks of careful work back to square one. In my experience, nothing replaces vigilance: tight caps, careful measurement, and always confirming the source’s reputation.
Price comes up just as often as performance. Deuterated solvents do cost more, but nobody wants to gamble on off-brand material that might cut corners on isotope enrichment. Labs working on tight grants might have to strategize when they use deuterated over standard solvents. Pooling resources with another research group can sometimes make budgets stretch further without skimping on quality.
Acetonitrile-D3 matters well beyond chemistry departments. Pharmaceutical companies, regulatory labs, and advanced material manufacturers rely on precision. Each time a new drug gets characterized, researchers count on data collected with deuterated solvents like this to assure purity and structural integrity.
Quality assurance runs more smoothly with consistent tools. Analytical chemists who cut their teeth in busy labs know unexpected spectra quickly lead to late nights troubleshooting. Using the right solvent heads off wasted efforts, re-runs, and the frustration of cleaning up ambiguous data sets.
Tighter standards on storage and shipping, better labeling, and more transparent sourcing from suppliers can give researchers renewed confidence. Supporting more sustainable manufacturing for deuterated reagents remains an ongoing challenge. Labs should push suppliers toward lower-waste processes and accountable sourcing. I’ve seen groups re-use residue solvent for less critical steps rather than tossing leftovers—every bit counts toward sustainability in scientific work.
Acetonitrile-D3 shows up in research labs everywhere, especially for nuclear magnetic resonance (NMR) as a deuterated solvent. During my graduate work, I saw cases where people treated every bottle with casual gloves and quick pours. The clear liquid looks no different from any average solvent sitting on a workbench. That should not fool anyone. This compound does more than keep samples happy and silent for clean spectra. The deuterium in Acetonitrile-D3 only swaps out regular hydrogen, but no miracle transformation neutralizes the hazards.
From a chemical safety standpoint, Acetonitrile falls into a similar risk category whether or not it’s deuterated. Take a whiff, and an almond-like odor tells you something’s up. My old professor used to keep broken ampules of cyanide compounds in locked safes, reminding us that even molecules further upstream from cyanide deserve plenty of respect. Acetonitrile metabolizes into hydrogen cyanide in the body. The deuterated form doesn’t make a difference for human toxicity – your body processes it the same as typical acetonitrile.
Simple facts: inhaling vapors, swallowing it, or splashing it on your skin can hurt you. Symptoms run from headaches and nausea to severe respiratory and heart effects for those unlucky or careless enough to get a solid exposure. The International Agency for Research on Cancer (IARC) labels regular acetonitrile as not classifiable for carcinogenicity, but acute effects remain a worry. Chronic exposure may not be common, though repeated use with lazy ventilation adds unnecessary risk.
Once, a neighbor lab tossed an Acetonitrile-D3 bottle into regular trash after a spill. Waste crew caught it before trouble started – and the lecture that followed echoed through the halls. Acetonitrile-D3 flammable, volatile, and requires flame-proof refrigerators if stored. It floats off the bench easily. Vapors can travel and find ignition sources, starting lab fires in the most unexpected ways.
A strong chemical smell rarely means “safe.” Many people tell themselves, “I’m only handling a milliliter or two,” thinking danger only shows up in gallons. But even tiny amounts make a difference. One slip can cause skin irritation or accidental inhalation. Not everyone respects personal protective equipment (PPE) until a splash lands on someone’s skin, and then policies tighten up in a hurry.
Safety data sheets (SDS) advise using Acetonitrile-D3 within a chemical fume hood with goggles, gloves, and a lab coat. This comes from real-world incidents, not theoretical caution. Emergency showers and eyewash remain must-haves in reach. It pays to check storage areas, because temperature swings or sunlight can degrade solvents over time, sometimes bringing even more unpredictable hazards.
Proper chemical waste handling stands as a non-negotiable habit. Labs face strict environmental rules, and ignoring disposal best practices leads to fines or worse. Training everyone–from undergraduates to postdocs–matters more than keeping detailed binders on the shelf. Real safety only sinks in through repeated drills and honest talk about risks.
Acetonitrile-D3 doesn’t deserve a horror story reputation, but it commands respect for good reason. The best labs I’ve worked in treated every deuterated solvent just like their toxic cousins. Frequent refresher classes, clear instructions on every bottle, and shared experiences support the safest science. Small changes—like swapping gloves after each use or double-checking hoods—mean fewer surprises and a lot more certainty that nobody heads home with lingering headaches or worse.
| Names | |
| Preferred IUPAC name | acetonitrile-α,α,α-d3 |
| Other names |
Acetonitrile-d3 Acetonitrile-2,2,2-d3 Deuterated acetonitrile CD3CN |
| Pronunciation | /əˌsiː.təˈnaɪ.trɪl diː θriː/ |
| Identifiers | |
| CAS Number | 2206-26-0 |
| Beilstein Reference | 1697554 |
| ChEBI | CHEBI:77556 |
| ChEMBL | CHEMBL3306702 |
| ChemSpider | 187205 |
| DrugBank | DB14085 |
| ECHA InfoCard | 13d87f4f-e193-40e7-81c6-ddd0485e3a37 |
| EC Number | 220-767-7 |
| Gmelin Reference | 16201 |
| KEGG | C14416 |
| MeSH | D000014 |
| PubChem CID | 66451 |
| RTECS number | AT9100000 |
| UNII | 453U8B03Q9 |
| UN number | UN1648 |
| CompTox Dashboard (EPA) | DTXSID4062134 |
| Properties | |
| Chemical formula | C2D3N |
| Molar mass | 44.08 g/mol |
| Appearance | Clear colorless liquid |
| Odor | sweet, ether-like |
| Density | 0.782 g/mL at 25 °C |
| Solubility in water | Miscible |
| log P | -0.34 |
| Vapor pressure | 5.8 kPa (20 °C) |
| Acidity (pKa) | pKa = 25 |
| Basicity (pKb) | pKb ≈ 24 |
| Magnetic susceptibility (χ) | -7.0 × 10⁻⁶ |
| Refractive index (nD) | 1.328 |
| Viscosity | 0.368 cP (25°C) |
| Dipole moment | 3.92 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 144.4 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -38.3 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -1643 kJ mol−1 |
| Pharmacology | |
| ATC code | V03AB54 |
| Hazards | |
| GHS labelling | GHS02, GHS07 |
| Pictograms | GHS02 | GHS07 |
| Signal word | Danger |
| Hazard statements | H225, H302, H312, H319, H332 |
| Precautionary statements | P210, P261, P273, P280, P301+P312, P303+P361+P353, P304+P340, P305+P351+P338, P308+P313, P330, P337+P313, P403+P233, P403+P235, P501 |
| Flash point | 42 °F |
| Autoignition temperature | 524°C (975°F) |
| Explosive limits | 3.0% (LEL) – 16.0% (UEL) |
| Lethal dose or concentration | LD50 Oral Rat 2730 mg/kg |
| LD50 (median dose) | 617 mg/kg (Rat) |
| NIOSH | SN1730000 |
| PEL (Permissible) | 'ACGIH 40 ppm (60 mg/m3) TWA' |
| REL (Recommended) | REL (Recommended): 40 ppm |
| IDLH (Immediate danger) | 200 ppm |
| Related compounds | |
| Related compounds |
Acetonitrile Acetonitrile-D4 Methanol-D4 Benzonitrile-D5 |
