© 2026 Nanjing Finechem Holdings Co., Ltd,
All Right Reserved
Turning back the clock to the post-war chemistry boom, the curiosity about carbodiimide reagents grew in labs that wanted better ways to join molecules. People working in peptide synthesis needed something that wouldn't leave behind unwanted traces, and academic circles in Europe and the United States searched for alternatives to the slightly messy dicyclohexylcarbodiimide (DCC). EDC・HCl was not the “original” carbodiimide, but once it came on the scene, its water-solubility changed the game. It let chemists sidestep filtration headaches and opened up routes for water-based chemistry. As universities explored bioactive peptides and industrial labs looked for cleaner, greener processes, EDC・HCl became a reliable workhorse in both sectors.
EDC・HCl, sometimes simply called EDC, does what a modern coupling agent should: helps bind carboxyl groups to amines, making amide bonds in water-friendly settings. Often provided as a white crystalline powder, it resists caking and offers a shelf life that works for students in university teaching labs and techs in pharmaceutical gigafactories. Suppliers package it in tightly sealed containers since the compound pulls in moisture. It doesn’t hang around in the product after a reaction, which matters when you can’t tolerate leftovers—the clean-up’s easier and downstream purity hits the standards for research, diagnostics, and therapeutic pipelines.
This compound melts around 110 to 115°C, remains readily soluble in water and common polar solvents, and carries a molecular weight of 191.7 g/mol. It’s stable under dry, cool storage, but hydrolyzes to a urea derivative once it sees water—making timing and dryness crucial for good yields. The hydrochloride salt gives it safer, more controlled handling compared to the parent molecule, which picks up atmospheric CO2 too quickly. EDC’s reactivity comes from its carbodiimide group, ready to grab carboxylates for peptide links or other crosslinking jobs. It doesn’t need special containment or high-energy input to perform, fitting well into busy academic research benches and GMP workflows.
Researchers rely on EDC・HCl being at least 98% pure to trust their experiments and manufacturing runs. Labels on bottles spell out hazard information, batch numbers, storage guidelines—usually “cool, dry conditions”—and a re-test date that aligns with regulatory compliance. For anyone scaling studies from bench to pilot production, the devil’s in container size: small research vials to multi-kilogram drums, all properly printed to avoid errors. I’ve noticed that the best suppliers give a certificate of analysis with each lot, which spares headaches during audits and troubleshooting.
Manufacturers build EDC・HCl using ethyl isocyanate and N,N-dimethyl-1,3-propanediamine with a hydrochloric acid quench step. Industrial lines fine-tune this route to optimize yield and reduce byproducts, investing in downstream washing and crystallization to achieve consistent purity. Lab syntheses for teaching often mirror these steps in miniature, teaching generations about gloves, fume hoods, and rigorous drying protocols. The final product always needs proper drying and packing to stave off its affinity for water, as moisture undercuts stability and causes loss of function before it ever gets to a chemist’s bench.
EDC・HCl enters the stage mainly as a coupling reagent, connecting carboxylic acids to primary or secondary amines to build amide bonds. Unlike its older carbodiimide relatives, EDC brings less insoluble byproduct hassle. Researchers often team it up with N-hydroxysuccinimide (NHS) or sulfo-NHS to boost yields and keep side reactions low, especially in bioconjugation. Crosslinking proteins to surfaces, labeling DNA, forging peptide sequences, it all hinges on EDC’s willingness to act quickly and disappear cleanly when the job’s done. Solutions with EDC don’t last more than a few hours—hydrolysis in aqueous buffers limits working time, so proper workflow and experiment timing matter a lot if you don’t want a failed reaction or expensive waste.
Everyone in the field seems to have their preferred shorthand: EDC・HCl, EDAC, or “water-soluble carbodiimide.” Product catalogs use N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride as the mouthful, but lab folk usually just say EDC. Some biotech lines twist this further, calling it “carbodiimide coupling agent” or referencing branded versions, but these mostly refer to the same molecule we’ve grown to trust for our coupling chemistry.
As straightforward as EDC・HCl seems, no chemist skips gloves, goggles, and lab coats when using it. The compound can irritate skin, eyes, and lungs upon contact. Fume hoods still make the most sense for weighing and dissolving it. Spills need damp cloths and safe disposal, especially since EDC reacts with liquids. Good practice includes spill kits on hand and waste tracking, since the urea byproducts still carry health hazards if inhaled or ingested. Storage away from light and water in tightly sealed bottles is routine. Occupational Safety and Health Administration (OSHA) and equivalent international standards guide industrial users, so most labs build checklists for safe handling and waste.
Drug discovery teams lean heavily on EDC・HCl for peptide synthesis, engineering new antibiotics, hormones, and therapeutic proteins. Biotech uses range further—linking antibodies to dye molecules in clinical immunoassays, crosslinking tissue scaffolds for regenerative medicine, modifying nanoparticles for targeted drug delivery. Academic labs use it to make new functional materials, designing soft hydrogels for tissue repair or “clicking” together new sensors. Even diagnostics companies use EDC-conjugated reagents for sensitive surface modifications. If a process needs a precise amide or ester bond and can’t tolerate leftover reagents, you’ll often find EDC at the mixing station.
Groups worldwide continue to mold EDC・HCl’s utility. Synthetic chemists shape new protocols to minimize side-products and improve reaction scope. Bioconjugate experts use it as a launchpad for site-specific payload delivery—think targeted drugs, labeled proteins in proteomics, or custom DNA sensors. Environmental chemists see its milder byproducts as preferable, especially as society pushes to reduce hazardous waste in research. Some teams even tinker with new forms, mixing EDC with green solvents or microreactors for more scalable, sustainable processes. Each tweak, whether for reaction efficiency or environmental footprints, tells a story of working chemistry driven by real-world demands.
EDC・HCl doesn’t fall under the greatest hits of toxic lab chemicals, but it commands respect. Animal studies point to irritation rather than systemic toxicity at modest exposures. Chronic high-dose exposure poses more concern—skin sensitization, respiratory problems, and, if mishandled, possible mutagenic effects tied to reactive intermediates. Researchers working with living tissues or injectable reagents track residual EDC levels carefully since it can modify protein sidechains unpredictably. Regulators occasionally revisit occupational limits as new studies tick in, keeping industrial users on their toes. Personal experience and stories from colleagues remind everyone: routine safety culture beats regret every time.
Innovation always finds ways to squeeze more performance out of proven tools. EDC・HCl will become greener, with manufacturers switching to less energy-intensive synthesis, recyclable packaging, and protocols that cut waste. Protein and nucleic acid engineering likely will demand even purer forms to meet the precision of next-generation biotherapeutics. As chemistry labs everywhere move toward compact automation, EDC’s dry-run compatibility with robotic setups will become a selling point. New fields—wearable biomaterials, rapid diagnostic systems, DNA data storage—push reagent companies to refine their EDC offerings and technical documentation even further. The compound’s reliability has already cemented its place on the shelf; now, the pressure is on for improvements that match emerging regulatory, sustainability, and technological trends without straying from the strengths that made EDC valuable in the first place.
EDC・HCl doesn’t get much attention outside of labs, but anyone who works with proteins or DNA has heard of it. This compound steps in where scientists want to link molecules together. In biochemistry labs, EDC・HCl often acts as the “glue” for joining amino acids or attaching small proteins to each other. If you’ve ever handled protein research, you’ve probably seen EDC・HCl used to couple peptides, such as creating peptide bonds that otherwise wouldn’t form so easily in water.
Drug research put EDC・HCl on my radar. Labs rely on it to develop antibody-drug conjugates or to modify surfaces for improved drug delivery. This carbodiimide enables a direct way to attach drugs to targeting molecules by activating carboxyl groups, which then react with amines. The process happens in water, so fewer side-products form and purification is easier. It’s all about getting better yields in less time with less cleanup.
Walk into a diagnostic company, and you’ll see EDC・HCl used for making test kits. If you own a rapid test for allergies or disease, chances are EDC has helped fix the antibodies or proteins onto the test strip. By triggering bonds between proteins and solid supports, it keeps the biomolecules stuck where they belong. Accurate and stable diagnostic tools mean faster answers in clinics and at home.
EDC・HCl impresses scientists not with flashiness, but dependability. The reason it’s so common in research comes down to how gentle and effective it is in water. Some click chemistry reagents need organic solvents, but EDC lets researchers skip those steps and keep reactions mild. This reduces risk and costs for anyone running experiments scaled up for diagnostics, research, or drug screening.
Handling EDC・HCl still brings headaches for beginners. It breaks down quickly in water if left out too long, so timing matters. Researchers often get inconsistent results if they rush the protocol or mishandle the dry reagent. The trick is to work fresh, keep the reaction at low temperatures, and measure by weight, not volume. Some manufacturers solve stability issues by selling EDC in single-use ampoules or by recommending pairing it with additives like NHS (N-hydroxysuccinimide) to lock in the activated intermediates.
Waste disposal from EDC reactions raises environmental red flags if not handled right. Good lab practice calls for neutralizing by-products and using minimal amounts. Some teams are investigating new carbodiimides or even enzyme-based coupling alternatives to push for cleaner, safer science, especially for large-scale manufacturing. For smaller research labs, switching to streamlined protocols and minimizing exposure cuts both risk and waste.
From personal experience, I’ve seen how tiny tweaks in EDC・HCl concentration or mixing speed can jumpstart a stalled project. In drug design, every milligram of purified product is hard-won. In diagnostics, consistent performance saves lives by preventing faulty readings. So while it sits quietly on a shelf in many labs, EDC・HCl ends up shaping research and product quality in ways that ripple out far beyond chemistry textbooks.
EDC·HCl, or 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, draws a lot of attention in chemistry labs. This reagent brings great efficiency to peptide bond formation, DNA and protein labeling, and other coupling tasks. Anyone working with it needs to know storage tricks to maintain reactivity and to support safer handling. EDC·HCl isn’t just another powder on a shelf; it degrades faster than many standard chemical reagents, which can impact yield in costly research or production runs.
From experience, labs often fail because simple habits get skipped or rushed. EDC·HCl reacts with water quite quickly, even with humidity from the air. If moisture finds its way in, you lose product strength. This means every time the container opens, the risk of degradation creeps up. Some sources estimate EDC·HCl has a shelf life of about a year when kept dry and cool. Regular mistakes such as opening a bottle in a steamy room or storing in a freezer with frost can shave months off its usability.
Chemists share tips about keeping EDC·HCl at 2–8°C, usually in tightly sealed bottles. Many go for amber glass, since light can also play a role in gradual decomposition. Silica gel packets or desiccators work well to keep the air around the solid bone-dry. Plastic screw-cap vials don’t always seal as tightly as you think after several uses, so swapping out worn containers helps. Letting EDC·HCl warm up to ambient temperature before opening also keeps condensation outside the bottle, not inside with the reagent.
EDC·HCl isn’t acutely toxic, but dust can irritate eyes, skin, and lungs. Personal experience in shared lab spaces shows the biggest risks pop up around clutter and cross-contamination. Spilled EDC·HCl gets into other bottles or instruments easily, which can ruin not just one project but several others. For this reason, keeping it segregated from strong acids and bases matters. It’s smart to label containers clearly and store them in a dry, ventilated chemical cabinet — keeping moisture-absorbing agents close at hand.
Staff working with this material receive regular safety briefings, including glove use and proper disposal. EDC·HCl can generate reactive byproducts if mixed with the wrong chemicals, so storing away from oxidizers, or anything prone to heat or moisture release, drops the risk. These steps support not just the chemist’s safety, but also the quality of lab results and the reliability of the company or institution’s output.
Some labs perform regular checks by testing a sample’s reactivity if a bottle has been open for a while. This quality control pays off in industries like pharmaceuticals, where a batch produced with degraded reagents could face costly recalls. For startup companies or public research sites, a ruined batch means lost time and missed deadlines.
Digital inventory tracking provides extra insurance against accidental mix-ups. Barcode labels on storage vials and automated email reminders for expiration checks help keep things organized without slowing down lab routines. These practical steps let teams focus less on logistics and more on innovation.
In many labs, good storage of EDC·HCl blends chemistry best practices with plain old responsibility. Not every reagent demands such care, but handling this one correctly stands between a smooth project and a lot of wasted resources. Clean technique, tight bottles, low humidity, and a bit of awareness turn chemical management into an everyday success story.
In routine organic synthesis, carbodiimides have earned their place as reliable and efficient agents for making amide bonds. Among these, 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, known as EDC・HCl, stands out. Its chemical formula reads as C8H17N3·HCl, while the precise molecular weight lands at 191.71 g/mol. EDC・HCl steps into peptide labs and pharmaceutical research with a clear intent: activating carboxyl groups, helping them link up with amines—a reaction behind the making of many drugs and biomolecules.
Making a peptide chain in a lab, I have relied on EDC・HCl for its knack for dissolving in water and not leaving behind tricky reagents that need extra work to remove. EDC・HCl outperforms old-school carbodiimides like DCC (dicyclohexylcarbodiimide), which form insoluble byproducts that stick to everything and complicate purification. EDC・HCl shaves off time and hassle, especially in high-throughput labs, and does so with fewer safety concerns—a point worth making in today’s attention to well-being and green chemistry.
In day-to-day synthesis, practical details make or break success. EDC・HCl comes as a crystalline powder, stays fairly stable at room temperature, and—unlike some carbodiimides—retains its effectiveness in water or mixed solvents. The product offers a big draw for research and production teams who want one less thing to worry about. In my work, being able to use EDC・HCl straight from the bottle, store it at room temperature, and use it with aqueous buffers has sidestepped countless headaches.
Nature builds its proteins with enzymes that work in near-perfect conditions. Chemists do not get those luxuries. EDC・HCl offers a tool that can be used with delicate molecules without sparking unwanted side-reactions. Its byproduct—urea—washes away with water, unlike the sticky byproducts from alternatives. This means lab teams spend less time troubleshooting, purifying, and repeating experiments. More efficient chemistry cuts costs and reduces chemical waste, both concerns for academic and industrial labs.
Like all chemical reagents, EDC・HCl deserves careful handling. As someone who has mixed hundreds of milligrams in the hood, I have learned to pay attention to labels and dust. EDC・HCl can irritate skin and eyes and doesn’t belong around food or drink. Good gloves, proper ventilation, and strict clean-up routines help keep everyone safe. Repeated use calls for respect—nobody wants to trade routine for risk. SDS sheets tell the facts, but habits in the lab keep those facts from becoming accidents.
With rising pressure for sustainable solutions, the chemistry community looks toward reagents that combine function with environmental caution. EDC・HCl sets one example, as it offers high water solubility, easy removal of byproducts, and lower toxicity than many of its rivals. As newer reagents come on the market, EDC・HCl stands as a benchmark. Its formula—C8H17N3·HCl—reminds chemists that simple modifications can deliver real benefits in day-to-day tasks. The molecular weight, 191.71 g/mol, gets plugged into calculation sheets, guiding decisions every day in research and manufacturing.
Handling chemicals in the lab never feels routine, especially with something like EDC・HCl. Many of us know it as a common coupling agent for peptide synthesis and other organic reactions, but it brings real health and safety hazards. Getting too comfortable breeds mistakes, and a tiny slip-up can send you from benchwork to the doctor in no time.
I remember early on in my lab days, folks treating certain chemicals with less respect just because they didn’t have a big skull and crossbones printed on the bottle. EDC・HCl isn’t explosive, but the dust or fumes can irritate eyes, nose, skin, and lungs. Some people react strongly, even at low doses. Not every lab worker has the same resistance; what burns one person’s skin barely affects another. Gloves—not cheap latex ones—make a big difference. Nitrile gloves help, and never depend on eye-glasses instead of full goggles. Lab coats, closed shoes, and face masks round out the barriers between you and that bottle.
I’ve seen good ventilation turn a stuffy, risky setup into a safer one. Chemical fume hoods aren't just expensive furniture. Working in the open lets invisible particles float around, so get that sash down and keep the airflow steady. After a spill or a messy transfer, ventilators save everyone breathing problems. Keep EDC・HCl containers tightly closed when not in use and never bring them near heat sources, as temperatures can make decomposition products even more unpleasant.
Proper planning means setting up for mistakes, not just avoiding them. No one wants to splash EDC・HCl onto bare skin, but prompt action matters much more than wishful thinking. Wash well and fast with running water. Small accidents turn big if you hesitate. Knowing the location of eyewash stations and safety showers makes a difference. Spills and waste disposal raise other issues. Use absorbent pads for cleanup. Double-bag contaminated gloves and paper, then follow local hazardous waste protocols.
One of my first supervisors drilled home this point: training doesn’t stop after a safety video. Understanding the chemical’s quirks, reviewing the SDS regularly, and talking with colleagues keeps everyone sharper. If a new team member joins, show them the ropes, especially with chemicals like EDC・HCl. Don't let people fake knowledge. Those who hang back usually need the most direction. Honest conversations about mistakes create a better group memory.
While EDC・HCl serves as an efficient reagent, alternatives sometimes offer less hazardous profiles, depending on the process. Automated handling systems help reduce direct contact. Not every lab can afford these, but even simple tools like spatulas and bottles with septum caps keep hands farther from the powder. Small steps into automation, like using pre-weighed vials, mean less exposure.
In every lab I’ve worked, the most effective safety measures grew from habit over time. Recognize shortcuts and eliminate them. Return EDC・HCl and all reactive chemicals to storage right after use. Clean up right away—anything left out multiplies risk for whoever comes next. Peer checks and a little peer pressure make it easier to keep standards high. For every bottle handled with care, there’s one story of what happens when someone takes safety for granted.
Anyone who has spent time at the lab bench making peptides knows how central coupling reagents can be. Among those, EDC・HCl, or 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, gets plenty of attention. Peptide bonds don’t spring into being on their own. You need to coax amino acids into linking up, and EDC・HCl helps push them together. It activates carboxyl groups, turning them more eager for reaction. Now, in a place like a peptide chemist’s toolkit, EDC・HCl earns its keep for coupling reactions in both solution and solid phases.
I still remember my first exposure to EDC・HCl, fueled by lectures that described it as a water-soluble carbodiimide. This characteristic means you can get good results working in water-friendly environments, which can feel less hazardous than older, less agreeable reagents like DCC. Instead of wrestling with solubility headaches, EDC・HCl gets to work right in the reaction flask, without gumming up the works with insoluble byproducts. In practical terms, fewer purification puzzles crop up, a gift for anyone tired after a long day in the lab.
In biochemistry labs, folks stretch EDC・HCl beyond peptide synthesis. Take proteins: efforts to tie up carboxyls to primary amines for crosslinking benefit from EDC・HCl’s mild nature. It keeps the protein’s function and shape largely intact. Researchers use it for conjugating proteins with fluorescent tags, creating immobilized enzymes, or even linking up surface coatings. Working with fewer unwanted side-products means results look cleaner under the microscope or mass spec.
Even a popular reagent can cause trouble. EDC・HCl produces a urea byproduct after doing its job. If you’re not careful, that urea can latch onto your peptide, especially when using weaker bases or under prolonged mixing. The wrong buffer can send yields tumbling or steer the product toward unwanted side reactions. I’ve faced this in the lab, forced to smash through another purification round because urea clung where it didn’t belong.
To sidestep common headaches, I’ve relied on additives like NHS (N-hydroxysuccinimide) or sulfo-NHS during peptide coupling. These compounds help produce active esters, speeding up the reaction and trimming side-product formation. The process becomes smoother and more predictable for the person doing the synthesis. In crosslinking, using the right pH buffer can make or break the experiment, since EDC・HCl likes working around neutral pH but loses steam if the conditions drift.
EDC・HCl shows how smart reagent selection can change a project’s outcome. With the right tweaks—good buffer, strategic additives, watchful purification—you turn a tricky peptide build or crosslinking scheme into a reliable, repeatable workflow. Experience says: understanding your chemistry turns a basic protocol into real science. Labs everywhere count on this carbodiimide not only because it’s common, but because in the right hands, it brings precision and possibility to modern synthesis.
| Names | |
| Preferred IUPAC name | N-ethyl-N′-(3-dimethylaminopropyl)carbodiimide monohydrochloride |
| Other names |
EDC HCl EDC hydrochloride EDAC Carbodiimide, N-ethyl-N′-(3-dimethylaminopropyl)-, monohydrochloride 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride |
| Pronunciation | /en θriː daɪˌmiːθəlˌæmɪnoʊˈproʊpɪl en ˈɛθəlˌkɑːrboʊˈdaɪəmaɪd haɪˈdrɒklaɪd/ |
| Identifiers | |
| CAS Number | 25952-53-8 |
| 3D model (JSmol) | Here is the **JSmol 3D model string** (in **SMILES** format) for **N-(3-Dimethylaminopropyl)-N'-ethylcarbodiimide Hydrochloride (EDC・HCl)**: ``` CCN=C=NCCCN(C)C.Cl ``` |
| Beilstein Reference | 2508730 |
| ChEBI | CHEBI:63608 |
| ChEMBL | CHEMBL1231187 |
| ChemSpider | 21520 |
| DrugBank | DB08273 |
| ECHA InfoCard | 03e55fbc-c485-48ba-882d-20de04ccd08a |
| EC Number | 25952-53-8 |
| Gmelin Reference | 1672929 |
| KEGG | C01880 |
| MeSH | D04.210.500.437.525.550.362.277.875 |
| PubChem CID | 16129782 |
| RTECS number | XY5600000 |
| UNII | 6Y3W7V6S3D |
| UN number | UN2811 |
| CompTox Dashboard (EPA) | DTXSID10897881 |
| Properties | |
| Chemical formula | C8H17N3·HCl |
| Molar mass | 191.70 g/mol |
| Appearance | White to off-white crystalline powder |
| Odor | Odorless |
| Density | 0.749 g/cm³ |
| Solubility in water | Soluble in water |
| log P | -2.5 |
| Acidity (pKa) | pKa = 11.5 |
| Basicity (pKb) | pKb: 3.3 |
| Magnetic susceptibility (χ) | -69.5×10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.510 |
| Viscosity | Viscous oil |
| Dipole moment | 8.70 D |
| Hazards | |
| Main hazards | Harmful if swallowed, causes serious eye irritation, may cause respiratory irritation. |
| GHS labelling | GHS02, GHS07 |
| Pictograms | GHS07 |
| Signal word | Warning |
| Hazard statements | H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled. |
| Precautionary statements | P261, P264, P271, P280, P301+P312, P302+P352, P305+P351+P338, P330, P337+P313, P363, P501 |
| NFPA 704 (fire diamond) | 1-2-0 |
| Autoignition temperature | > 228 °C |
| Lethal dose or concentration | LD₅₀ Oral Rat: 560 mg/kg |
| LD50 (median dose) | LD50 (median dose): Oral, Mouse: 830 mg/kg |
| NIOSH | Not listed |
| PEL (Permissible) | Not established |
| REL (Recommended) | No REL established |
| IDLH (Immediate danger) | Not established |
| Related compounds | |
| Related compounds |
Carbodiimide Dicyclohexylcarbodiimide (DCC) 1-Cyclohexyl-3-(2-morpholinoethyl)carbodiimide (CMC) N-Ethyl-N′-(3-dimethylaminopropyl)carbodiimide (EDC, free base) |
