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Nitrates: A Straightforward Look at Their Past, Present, and Where They're Headed

The Road Nitrates Travelled Through History

Looking back across centuries, folks leaned on nitrates long before chemistry classes had names for them. Saltpeter, or potassium nitrate, turned up in Chinese gunpowder recipes a thousand years ago. Crops in European fields got their vitality from manure heaps rich with sodium nitrate, even if farmers didn’t really grasp the science at work. By the time world wars broke out, explosives needed reliable sources of nitrates. Chilean miners pulled sodium nitrate from the earth in the Atacama Desert as fast as ships could haul it away. Synthetic processes like the Haber-Bosch method, which combined nitrogen and hydrogen to make ammonia, yanked nitrate production into the industrial age. Farmers and munitions experts both began relying on these new chemical routes. The world changed, with modern agriculture and warfare marching step-for-step alongside nitrate technology.

What Makes Nitrates Tick: Their Everyday Nature

Nitrates have a familiar structure: one nitrogen atom bonded with three oxygens. That makes them surprisingly easygoing in water, dissolving quickly. They show up as colorless crystals or powders, often working unseen beneath the surface, especially in fertilizers. Thanks to their sturdy yet reactive makeup, nitrates move freely in the environment, from groundwater to leaf veins. If you’ve tucked away cold packs for sports injuries or used instant ice packs on hot days, you’ve grabbed onto ammonium nitrate at work. This ordinary-looking group of salts channels huge amounts of stored chemical energy, whether in quick-release plant foods or in the thunderclap of demolition charges. The reliable nature of this chemical group paved the way for their spread across so many fields.

Physical and Chemical Nature Shapes Application

Not all nitrates play the same role. Potassium nitrate and sodium nitrate dissolve easily, turning into a ready stream of ions that plants can drink up. Ammonium nitrate, on the other hand, brings together sharp reactivity and the ability to absorb water from the air, so it needs airtight storage. Their shared knack for setting off exothermic reactions makes them stars in fireworks and propellants. This means their chemical properties weave together danger and utility. Folks working with nitrates come to know their distinctive tastes—cool and slightly bitter—and the no-nonsense way they blend into water or break apart with heat. It’s not just scientific curiosity that drives this; the need for reliable performance, whether in feeding crops or running mining operations, puts their properties front and center.

Labeling, Specifications, and Safety Still Matter

Anyone with hands-on experience in industrial plants knows labels and specs are not just paperwork; they’re lifesavers. Each batch of nitrate goes out with strict limits for purity, moisture content, and trace impurities. Even a small difference—like extra moisture—can mean clogged fertilizer spreaders or unstable explosives. Governments work hard to make sure retail and industrial products carry clear warnings, hazard ratings, and instructions. In my years on the fertilizer supply side, I’ve seen how hard it is to keep things dry and separated, since certain combinations turn otherwise bland material into a ticking bomb. With strict record-keeping and careful tracking, the industry chases down accountability, understanding that simple mistakes with nitrates can ripple into disasters.

How Nitrates Are Prepared and Modified

The big push in nitrate production still happens in chemical plants, where air and water come together under high pressure and temperature to make ammonia. That ammonia then meets up with oxygen in the Ostwald process and produces nitric acid, a key player in making all sorts of nitrate salts. It’s a choreographed dance with dangerous materials, so operators watch every valve and gauge. At the lab bench, small-batch prep lets researchers tailor forms of nitrate for medicine, studying delivery mechanisms that slow down or speed up nitrate release for heart patients. Some chemists tweak nitrates to reduce their risk of explosion, adding fillers or binders that dampen the rapid release of energy while keeping the nutrients available for plants. For those working with energetic materials, recipes shift, altering brands of nitrate for blendability, stability, and cost.

Chemical Reactions and Everyday Transformations

Mixing nitrates with acids kicks off a classic reaction, with the nitrate giving up oxygen and sometimes spitting out toxic gases. Plunk sodium nitrate in with sulfuric acid, and you’re on track to make nitric acid itself. In fireworks, nitrates supply bursts of oxygen to fuel bright colors; in the soil, bacteria turn nitrates back into nitrogen gas through denitrification, closing a natural loop. The tireless reactivity of nitrates makes them spontaneous helpers, yet that reactivity means strict vigilance in storage and handling. People in labs or on construction sites learn quickly how a “simple” salt can shift from mundane to hazardous in a flash.

Another Name, Same Core Chemistry

Pick up a chemistry catalog and you’ll see synonyms on nearly every page: potassium nitrate as saltpeter, sodium nitrate as Chile saltpeter, and ammonium nitrate under various trade names. Each carries its own legacy through agriculture, pyrotechnics, food preservation, and medicine. I’ve seen the confusion crop up in order forms and shipping documents—one wrong synonym, and the wrong product lands on a loading dock. Add to that the mishmash of global regulatory terms, and businesses juggle dozens of names for what’s often a nearly identical product. The chemistry might not change, but the paperwork is fraught with traps.

Everyday Operations and Staying Safe

As someone who’s worked close to bulk storage, it’s clear: success in nitrate handling comes down to rigorous standards and plain common sense. Moisture locks up product or triggers clumping, so warehouses need low humidity. Clean separation from fuels or organic material isn’t just best practice; it’s essential. I’ve watched safety teams run drills for spill response, teach proper use of personal protective equipment, and create strict documentation trails for every lot moved. No matter how routine the work feels, reminders about past accidents force a focus on checklists and training. Regulatory bodies set the bar high, but ultimately workplace culture makes the difference.

Where Nitrates Work: Fields to Factories

Industry leans on nitrates across a staggering range of activities. Fertilizer companies ship millions of tons for farming. Medicine uses them for producing vasodilators, which help people with chronic angina breathe easier. Water treatment plants rely on certain nitrate salts for blasting biofilms off pipes. Meat processors cure bacon and sausage with sodium nitrate, creating that signature pink hue while guarding against botulism. Miners unleash controlled blasts deep in rock with nitrate-based explosives, moving thousands of cubic meters of earth without a stick of “traditional” dynamite. The overlapping roles mean every user, from small-town farmer to city energy provider, pays attention to how stable, pure, and affordable their nitrate supply runs.

Fresh Ideas and Research Directions

Labs push at the boundaries of what’s possible with nitrates. Researchers study slow-release fertilizer coatings aimed at cutting runoff while keeping crops nourished through long growing seasons. In medicine, the focus shifts to finding nitrate forms that balance blood pressure control with fewer side effects. Resource recovery teams examine biological ways to filter hazardous nitrate runoff from water. Environmental chemists work to harness bacteria that can gobble up excess nitrates before they cause problems downstream. Every solution needs tradeoffs—whether cost, effectiveness, or the learning curve for users in the field. Greater transparency and better labeling, fueled by government and industry collaboration, clears away confusion and makes new uses safer and more effective.

The Human and Environmental Toll: Toxicity Concerns

Nitrate’s darkest side shows up in contaminated groundwater, where excess fertilizer use leaches through the soil into wells. Blue baby syndrome, caused by infants consuming water high in nitrates, leaves families worried about what’s in the tap. Researchers track links between high nitrate exposure and certain cancers, but results remain tangled with variables. Handling nitrates in industrial settings also brings respiratory and fire risks. For all the promise nitrates offer, their continued study reveals layers of caution—reminders to respect their power in both soil and society. In my own conversations with rural neighbors, stories routinely surface about local water tests and treatment costs climbing, a clear call for prevention over cleanup.

On the Horizon: Nitrates Facing New Realities

Nitrate chemistry won’t disappear soon. With climate change squeezing farmers and industries to do more with less, research shifts toward cleaner manufacturing and smarter application in the field. Countries with tight environmental rules lead efforts to recycle nitrate-contaminated water and to prevent accidental fertilizer overuse. Synthetic biology even proposes engineered microbes that convert waste nitrogen into useful nitrates, bypassing old energy-hungry chemical plants altogether. Less pollution, lower energy costs, and increased food production paint a hopeful picture, but all these promises demand historic levels of cooperation between scientists, regulators, and communities. The humble nitrate, so often overlooked, sits at the crossroads of food, safety, and sustainability. Staying grounded and honest in the conversation about their use and risks will matter more than ever as we figure out how to carry this chemical legacy into a safer future.




What are the main uses of Nitrates products?

Farming Rides on Nitrates

Walk down any rural road near growing fields, and the need for strong crops feels obvious. Farmers need their land to work hard. Nitrate fertilizers, especially those made with ammonium nitrate or calcium ammonium nitrate, make a noticeable difference here. These fertilizers give plants a shot of nitrogen in a form they can use right away. Anyone who has trialed different soil treatments will tell you the same: fields treated with nitrate-based fertilizers often look stronger and greener. That extra boost helps feed people all over the world.

In some regions, the weather acts fast on farmland. Rain can wash nutrients away, and sandy soils lose them quickly. Nitrate forms hang around just long enough, releasing their effect at the right time for the crops. Research from the Food and Agriculture Organization shows yield results climb significantly in areas with steady nitrate fertilizer use. More food means a bit less reason for worry in hungry communities.

Medicine and Health Find Use Too

People often forget that nitrates also show up in the medical cabinet. Walk into any emergency room with a chest pain complaint, and doctors may use nitroglycerin, a nitrate. These substances help dilate blood vessels, easing pain and improving blood flow. For someone facing a heart crisis, that difference is life-changing. Decades of medical research back this up. Nitrates in this form have cut down the dangers that used to follow every heart attack or angina event.

Tools for Heavy Industry

Many big projects, like highway building or mining, won’t move forward without nitrates. Explosives often use ammonium nitrate because it delivers the punch to break rock. Anybody who has worked on a road crew or watched a mining demo knows that these materials save hours of physical labor. The blasting clears tunnels faster and lifts boulders that simple machines can't touch.

Nitrates also provide help in metal finishing. Nitric acid, made using nitrate products, cleans and prepares metal before it’s turned into parts for cars, airplanes, or tools. Without this chemical, the world could not count on tough stainless steel hardware or shiny bike frames.

Food Use: A Mixed Reputation

Nitrates keep deli meats and bacon looking red and tasting fresh. Sodium nitrate and sodium nitrite fight dangerous bacteria in foods, stopping spoilage long enough to reach a store shelf. The science behind safety here runs deep. Grocery shoppers read about debates over processed meats and worry about cancer links, but the risk at regulated levels stays small. Real risk comes from mishandling food, not from the small doses in store-bought products. Researchers at the World Health Organization have weighed these risks and still recognize the level in most cured meats as manageable for healthy adults.

Facing Challenges and Looking to Solutions

The biggest headache with nitrate products remains pollution. Runoff from fertilizer spills into rivers, sending nitrate downstream. Algae blooms follow, and local fish suffer. More farmers are choosing soil testing and timing applications with the weather forecast to use just enough product, and drip irrigation can help keep everything in place for the plants that need it. Simple fixes like buffer strips of grass between fields and streams also slow down the flow.

Nitrate products fill shelves and fields, powering both food and industry. Paying attention to how and where they move remains everyone’s job, from the farm to the factory floor and even at the grocery counter.

Are Nitrates safe for human consumption?

Daily Encounters with Nitrates

Every grocery list probably holds something with added nitrates. Cured meats, leafy greens, even running tap water can contain them. Nitrates keep bacon pink, prevent botulism, and show up naturally in vegetables. Most people hear “nitrate” and think of meat preservatives, but spinach, lettuce, and beets actually have much higher amounts.

What Science Says About Safety

The concern comes from how the body turns nitrates into nitrites. In the stomach, nitrites can combine with proteins and form compounds called nitrosamines, which can cause cancer in lab animals. The World Health Organization has called processed meats carcinogenic, and nitrates get part of the blame. Many studies point out a link between eating lots of processed meats and a higher risk of colorectal cancer.

Still, not all sources of nitrates are equal. Vegetables contain antioxidants and vitamin C. These nutrients help block the creation of harmful nitrosamines. One study published in the American Journal of Clinical Nutrition found that eating vegetables high in nitrates seems to lower blood pressure, thanks to natural conversion into nitric oxide, which relaxes blood vessels.

The U.S. Environmental Protection Agency (EPA) sets a strict limit for nitrate in drinking water—10 milligrams per liter. Water above that could put babies at risk for “blue baby syndrome,” a condition where blood struggles to carry oxygen. Adults process nitrates just fine unless drinking from a badly contaminated source every day.

What Matters: Balance, Source, and Portion Size

Eating lots of fresh vegetables offers benefits, from lower blood pressure to a reduced risk of stroke. Most health scares about nitrates actually focus on cured meats, not salad. Sausages, bacon, and ham use sodium nitrite as a preservative and color enhancer. At high levels and over decades, risks start to stack up. Yet, the typical American gets more nitrates from vegetables than from meat.

Some believe buying bacon labeled “no added nitrates” means it’s free from them, but celery powder used as a natural preservative works almost the same way. The nitrate molecules stay the same whether they come from sea salt or celery.

Looking for Smarter Choices

Most evidence points to moderation and variety as the best approach. Piles of leafy greens help the body in many ways. If you crave lunch meats and hot dogs, changing up the routine or reaching for plant-based proteins more often will avoid loading up on preservatives. Reading the ingredient label still pays off. An eye on serving size makes a difference over months and years.

Drinking water straight from a well, especially in farming regions, might carry some risk. Water testing kits cost little compared to medical bills. Public water systems check nitrate levels regularly, but private wells skip that step. If a well test shows high levels, available filters or bottled water bring a reliable fix.

Trusting Reliable Sources

Strong research from Harvard University, Mayo Clinic, and the American Cancer Society explains the risks and advantages of nitrates clearly. These experts break down complex studies into honest, understandable advice. Every grocery run brings small decisions, but asking questions and trusting solid sources always trumps falling for scary headlines or supermarket promises about trendy foods.

Everyday Perspective

Growing up in an agricultural town, I saw nitrate-rich fertilizer runoff make its way from farm fields to the local ponds. My own family uses a water filter and picks vegetables from the garden whenever possible. Experience taught me that moderation, variety, and facts matter, not hype or fear. Nitrates aren’t the villain of the pantry, but mindless eating and ignoring the source can cause trouble over years. Taking small, mindful steps can make daily nutrition safer—without the need for complicated fixes or gimmicks.

What are the side effects of Nitrates?

Nitrates in Medicine and Food

Step into any pharmacy or take a look at the ingredient lists on processed foods, and you’ll find nitrates. Doctors sometimes use nitrate-based drugs like nitroglycerin or isosorbide dinitrate to treat chest pain related to heart conditions. Bacon, cured meats, and even some leafy greens also come packed with nitrates, though the ones in food act a bit differently in our bodies than the pharmaceuticals.

How My Own Family Has Dealt with Nitrate Drugs

My grandfather took nitroglycerin for angina. He’d keep those small tablets handy just in case his chest tightened up. The medicine brought him relief, but he often mentioned a pounding headache after using it. Dizziness sometimes forced him to sit and catch his breath. These stories stuck with me and line up with what patients commonly report in clinics or on hospital rounds.

Main Side Effects: No Sugarcoating

Headaches stand out as the most common troublemaker. Some folks feel a throbbing pain, similar to a migraine. Blood vessel dilation can drop blood pressure quickly, leading to lightheaded feelings or even fainting. My grandfather learned to rise from a chair slowly, so he wouldn’t faceplant in the living room.

Nitrates can make people’s hearts race, leaving them feeling jittery or uncomfortable. Facial flushing—blushing with heat—pops up for some as blood vessels open up. Nausea and upset stomachs can follow the first few doses, though many adapt over time. Doctors often talk about “nitrate tolerance,” where the medicine works less after repeated use, which has forced medical teams to get creative with dosing schedules.

Nitrates Outside Medicine—Are Processed Foods Safe?

Nitrates in bacon or sausages react with proteins during processing. Health experts have flagged processed meats for years over the cancer risk, as the body can turn these nitrates into nitrosamines, substances known to increase the odds of gastro-intestinal cancers. The World Health Organization classifies processed meats as carcinogenic, and it’s no secret why more folks skip these at breakfast.

Leafy greens like spinach and arugula carry nitrates that can convert into beneficial nitric oxide in the body, helping blood flow and lowering blood pressure. Food matters—a plate of vegetables works very differently in our bodies than packaged snack food.

Who Should Watch Out?

Young children, folks with certain rare enzyme issues, and infants under three months should steer clear of high levels in water or food. In newborns, nitrates can block oxygen delivery, causing what’s called “blue baby syndrome.” For adults with angina on nitrate medications, mixing these drugs with medications for erectile dysfunction (like sildenafil) can trigger dangerous blood pressure drops.

Staying Safe and Practical Steps

Doctors tell heart patients to keep a log of symptoms and bring up side effects right away. Lowering nitrate doses, splitting tablets, or switching to an alternative can make a big difference. For food, rinsing vegetables and moderating cured meat intake curb exposure, while checking water sources for contamination keeps families out of harm’s way.

Medical studies underline the value of a balanced diet rich in natural fiber, vitamins, and leafy greens, while pushing people to limit deli meats or skip them altogether. Clean water and regular checkups help everyone stay ahead of problems linked to nitrate exposure, whether from pills, pork, or what’s in the tap.

How should Nitrates products be stored?

Nitrates: Useful, but Not to Be Taken Lightly

Nitrate products turn up everywhere—agriculture, industry, even in the medicines cabinet. They boost fertilizer effectiveness and keep many processes running. As someone who’s handled fertilizers on both small plots and commercial farms, I can say that careless storage invites real trouble. Every year, stories hit the news about accidental fires or mysterious explosions in places that thought of nitrates as harmless powder or pellet.

Keep It Cool, Keep It Dry

Moisture and nitrates mix poorly. Simple humidity can cake up the material or start unwanted reactions. There’s no need for a climate-controlled vault, but a shed with a solid, leak-free roof and walls goes a long way. Tarps won’t cut it. In more humid places, desiccants or dehumidifiers often turn out to be a smart investment. In my region, summer storms test every storage barn’s mettle. A few wet bags of fertilizer can lock up a supply, leaving crops underfed and bottom lines squeezed.

Warmth helps spread fertilizer across fields, but inside storage, heat can create a danger zone. Most nitrate products hold up well at normal outdoor temperatures. Pile enough of them too high or keep them in a cramped, stuffy corner, and things heat up fast. Spacing pallets and leaving room between stacks gives air somewhere to go. On busy days, staff often get tempted to fill in every inch, but overpacking has led to documented fires and lost profits.

Contamination: Avoiding a Recipe for Disaster

Keeping nitrates away from fuels, oils, paints, and other chemicals gets much less attention than it should. Yet, history points again and again to disasters that started with a single drip of oil or a forgotten bag of seed treatment dumped on the floor. The ammonium nitrate explosion in Beirut in 2020, for example, started with significant contamination. Even in smaller amounts, a spark or chemical spill can cascade into a deadly event. Workers ought to store nitrate products in separate, well-marked spaces. Equipment used for measuring and moving it should steer clear of the other chemicals, too.

Security and Traceability

The world has changed, and so have the rules. Fertilizer theft runs more common than many realize, as certain nitrate types can help make illegal explosives. Locks, cameras, and inventory logs are now standard in many places—not just big warehouses, but rural co-ops and local suppliers as well. On my family’s farm, the records aren’t there for show. Visits from regulators or insurance agents mean producing receipts and tracking logs or facing stiff penalties. It’s a world where one missing pallet triggers worry, not shrugs.

Training Matters as Much as Space and Locks

No storage rule works unless people understand it. New hires and seasonal help don’t always grasp just what’s at stake. Years ago, an exhausted spring volunteer stacked bulk fertilizer directly next to a tank of diesel. It took an angry manager to spot the mistake before any harm came. Training needs to stress the “why” so routines stick.

People learn by doing. Short, focused refreshers before planting or shipping season open eyes and help avoid shortcuts that might turn costly. Farmers, warehouse crews, and distributors have the tools to get this right, but only if they understand the stakes.

Treat Nitrates Like the Resource—and Risk—They Are

Keeping nitrate products stored safely isn’t just about ticking off boxes for inspectors. Every step—dry storage, space management, chemical separation, security, staff training—serves real people and real crops. The benefits are clear. Nobody wants their name in the news for the wrong reason.

Are there any interactions between Nitrates and other medications?

The Conversation Around Nitrates in Medicine

Everyday people rely on nitrate-based medications to manage heart conditions such as angina or chronic heart failure. These drugs, including nitroglycerin and isosorbide mononitrate, relax blood vessels so the heart pumps blood with less effort. Many folks in my family have benefited from them. But there’s a side of nitrate use that gets less attention—a danger that shows up when people mix these drugs with others without a full understanding of the risks.

Trouble With Mixing: Real Dangers

One of the most widely documented problems comes with drugs for erectile dysfunction, like sildenafil or tadalafil. Taken together with nitrates, these medicines can cause blood pressure to crash, leaving people dizzy or even collapsing. This isn’t just speculation; emergency rooms see these cases every week. Statistics from the American Heart Association make it clear—mixing these medicines with nitrates sends thousands to the hospital each year.

Some blood pressure medicines, especially alpha-blockers, stack on the effects of nitrates. Now picture someone who already deals with low blood pressure. Throw these drugs into the mix and daily life turns risky. Blackouts, falls, and accidents follow, especially among older adults. I remember seeing this firsthand as a caregiver for my neighbor—he ended up with a broken wrist after just a minor change in his medication.

Less Obvious Combinations Can Pose Risks

Beyond these high-profile interactions, there are subtler combinations that can sneak up on patients. Drinking alcohol while using nitrates often brings headaches, flushing, or unexpected fatigue. Using over-the-counter cold medicines, especially decongestants, can raise blood pressure and fight against the effect of nitrates. For someone managing heart disease, this creates a tug-of-war inside the body.

Prescription drugs for mental health, such as certain antidepressants, sometimes lower blood pressure too. It only takes a few missed warning signs before a routine combination leads to an ambulance ride. This comes up often in primary care clinics, especially among older adults who keep long lists of prescriptions.

Why This Issue Deserves Everyday Attention

Many folks trust that different doctors and pharmacies always catch these interactions, but gaps appear in busy systems. A 2023 review in JAMA Internal Medicine showed that one in five older Americans takes medications with a risk of dangerous interactions—often unknown to both patient and healthcare team. So much could be avoided with clearer conversations and closer communication among everyone involved in the medication process.

Solutions: Straightforward Steps to Safer Care

Keeping a full, updated medication list—bringing it to every appointment—makes a concrete difference. Pharmacists help spot red flags if given the chance. Digital tools that flag dangerous mixes at the pharmacy counter make these connections visible right away. Patients who take an active role ask hard questions and demand clear explanations from their doctors.

More outreach about these interactions belongs in heart health checkups, along with clear printed warnings from pharmacies. Medical teams do better work by looping in specialists when new prescriptions pile up. The best outcomes come from ordinary folks who look out for each other—sharing stories, staying alert for changes, and refusing to ignore a sudden dizzy spell or slump in energy.

In the real world, managing heart medicine isn’t just about following orders. It’s about spotting danger before it starts—and working together so a cure doesn’t create a new problem.

Nitrates
Names
Preferred IUPAC name Nitric acid
Other names nitrate salts
nitric acid salts
NO3-
Pronunciation /ˈnaɪ.treɪts/
Identifiers
CAS Number 14797-55-8
Beilstein Reference 1460421
ChEBI CHEBI:29386
ChEMBL CHEMBL: CHEMBL2096921
ChemSpider 21512
DrugBank DB00682
ECHA InfoCard eum0000001020
EC Number 1.7.99.4
Gmelin Reference Gmelin Reference: 1551
KEGG C00179
MeSH D009750
PubChem CID 943
RTECS number WN5600000
UNII 7FCG9GH94W
UN number UN1477
Properties
Chemical formula NO₃⁻
Molar mass Molar mass of nitrates (NO3-) is 62.0049 g/mol
Appearance Colorless or white crystalline solids
Odor Odorless
Density 1.45 g/cm³
Solubility in water Soluble
log P -3.67
Acidity (pKa) −1.4
Basicity (pKb) 4.7
Magnetic susceptibility (χ) Paramagnetic
Refractive index (nD) 1.341
Viscosity 10 - 20 cP
Dipole moment 3.46 D
Thermochemistry
Std molar entropy (S⦵298) Nitrates: 206.0 J·K⁻¹·mol⁻¹
Std enthalpy of formation (ΔfH⦵298) -207 kJ/mol
Std enthalpy of combustion (ΔcH⦵298) No value.
Pharmacology
ATC code C01DA
Hazards
GHS labelling GHS02, GHS07, GHS09
Pictograms GHS07,GHS09
Signal word Danger
Hazard statements H272: May intensify fire; oxidizer. H302: Harmful if swallowed.
Precautionary statements P210, P220, P221, P261, P264, P273, P280, P301+P312, P302+P352, P305+P351+P338, P308+P313, P370+P378, P403+P233, P405, P501
NFPA 704 (fire diamond) 2-0-0 OX
Autoignition temperature > 316 °C (600 °F)
Lethal dose or concentration LD₅₀ (oral, rat): 3750 mg/kg
LD50 (median dose) 275 mg/kg (rat, oral)
NIOSH STEL 10 mg/m3
PEL (Permissible) 10 ppm
REL (Recommended) 50 mg/L
IDLH (Immediate danger) IDLH: 250 mg/m3
Related compounds
Related compounds Nitrites
Chlorates
Perchlorates
Sulfates
Phosphates