M-Cresol 4-Acido Sulfonico Sal De Amonio: An In-Depth Commentary

Historical Development

Digging into the backstory of m-Cresol 4-acido sulfonico sal de amonio shows the chemical sector’s ability to adapt and innovate. Early sulfonation chemistry, which set the stage way back in the late nineteenth century, wasn’t built for precision. More detailed techniques showed up with the rise of dye-making in Europe, as scientists realized the benefits sulfonated cresols could offer. Demand from textiles, and later agrochemicals, nudged research funding into specialty sulfonic acids. By mid-20th century, better understanding of aromatic substitution and cleaner ammonia-handling methods allowed for more efficient ammonium salt formation. Looking back at the old patents and dusty journals, you see a pattern: researchers hunting for ways to boost water solubility and tweak reactivity, making these derivatives more useful for modern industry.

Product Overview

Anyone who’s worked with sulfonated cresols knows the ammonium salt doesn’t just show up in one industry. It finds a spot in dyes, surfactants, niche pharmaceuticals, and sometimes as an intermediate in polymer production. Manufacturers lean on this sulfonate for its stability and ease of mixing with aqueous systems. Formulators like having it on hand because it doesn’t break the bank and it works efficiently in specialized applications. It holds together well under a range of environmental conditions, letting producers focus on refining their process yields instead of constant troubleshooting. Over the past decade, several global suppliers started offering technical-grade variants tailored by purity. Folks in R&D appreciate how easily this molecule slides into their reaction schemes, freeing up resources for even bigger ideas.

Physical & Chemical Properties

M-Cresol 4-acido sulfonico sal de amonio lands in a powdery, crystalline form, usually off-white or light beige. Anyone handling it gets a faint musty aroma—typical for sulfonated aromatics. It rarely clumps if stored dry. Solubility in water sits at the heart of why manufacturers prefer the ammonium over sodium or potassium options. Its melting point rides a bit higher than the parent acid, which helps during transportation and storage where accidental liquefaction causes loss and mess. Chemically, the aromatic ring stands up well against basic and mild acidic conditions; only strong oxidizers or high temperatures will break it down quickly. That kind of reliability carries weight across process industries. Many teams I’ve worked with do a basic pH drift test to confirm neutral to slightly acidic behavior, which guides subsequent formulations.

Technical Specifications & Labeling

Producers in Europe, Asia, and North America put out tech-spec sheets that detail purity, moisture, and trace metals. Typical purity lands above 98%, with moisture content kept below 2%. Sulfate and iron levels tend to draw scrutiny in many labs, especially for color-sensitive applications. Labeling standards demand clear hazard pictograms under GHS, clear batch codes, and manufacturer addresses. Regulatory paperwork lists the chemical’s UN number, customs tariff codes, and necessary REACH or TSCA compliance notes. Careful reading uncovers subtle manufacturer preferences: some tout extra-dry grades, others brag about heavy-metal control. With global movement, proper harmonized system labeling avoided headaches at customs or downstream regulatory audits.

Preparation Method

Process engineers rely on sulfonating m-cresol with fuming sulfuric acid or oleum, a method that demands patience and consistent cooling. Stirred reactors keep things under control as this blend can heat up fast and give off gases. As the acidic intermediate forms, researchers neutralize it with ammonium hydroxide or ammonium carbonate, then isolate the ammonium salt by controlled evaporation or crystallization. Over the years, some teams switched to continuous-flow setups, since these manage heat transfer better and produce a tighter range of product specs. Waste management, especially from spent acids and off-gas, stays at the forefront for health and environmental teams. Many facilities have had to rethink water usage and acid neutralization, finding ways to reuse or sell by-products so less ends up in landfill.

Chemical Reactions & Modifications

The ammonium salt of m-cresol sulfonic acid has seen plenty of interest in reaction optimization labs. Its sulfonate group frees up the ring for further substitution and coupling reactions; as a result, it’s a regular in synthetic routes toward azo dyes and specialty surfactants. Those familiar with resin chemistry might use this salt as a catalyst for condensation steps, especially where milder acids would stall out. Some researchers explore partial alkylation or oxidation to unlock new material properties, but most real-world demand revolves around its reliability as a solubilizer. Once integrated into a surfactant blend, the resulting products often outstrip older analogs both in foaming and stability, which adds another arrow to a formulator’s quiver.

Synonyms & Product Names

You’ll run into a mix of names across catalogs: ammonium m-cresol-4-sulfonate, 4-sulfo-m-cresol ammonium salt, and, less often, m-cresol-p-sulfonic acid ammonium salt. European suppliers use different trade names, but serious buyers always check for IUPAC conventions to avoid ordering mistakes. On chemical forums, you’ll see casual references like “ammonium MC4S” or just “cresol sulfo ammonium.” These synonyms aren't just a paperwork problem — they get in the way of clear communication. Lab techs and procurement departments have had their share of confusion when shipments arrive with alternate names, only to realize the spec sheets match.

Safety & Operational Standards

Working with any aromatic sulfonate deserves more than a checklist. Wearing nitrile gloves and goggles is routine; engineers and warehouse staff go over ventilation, dust suppression, and spill kits during every training cycle. This ammonium salt carries moderate skin and eye irritant status, and there’s always concern about inhaling fine particles during transfer or mixing. Operations management pushes for real-time air quality monitoring when large batches move. Emergency procedures get regular review as part of ISO and OSHA compliance—companies that skip this have paid the price in downtime and citations. European producers, especially those governed by REACH, face tough storage and labeling guidelines. Any slip-up in containment can trigger full-site audits.

Application Area

The biggest commercial draw for this salt lands in dye and pigment sectors. Sulfonated cresol derivatives provide the backbone for vivid azo couplers and help regulators meet strict wastewater limits thanks to their easy removal. Surfactant makers value high water solubility and mild electrolyte balance, lowering the need for harsh processing aids. In the pharmaceutical world, specialty labs use regulated grades as intermediates for niche APIs or stabilizers, especially in countries rolling out tighter compliance. Some epoxy and phenol resin systems tap m-cresol sulfonic acid salts as acid catalysts, boosting crosslink rates without high corrosion potential from free acids. Talk to old hands in the field, and you’ll find even more craft applications—from photographic chemistry to niche biocides.

Research & Development

Recent years brought more detailed research. Polymer chemists tracked how introduction of the sulfonic acid group could lead to better membrane materials for water purification. A few pharma giants backed studies on new salt forms for improved pharmacokinetics, hoping the ammonium variant might dodge toxicity linked to heavier cations. One environmental chemistry team used this compound as a marker molecule to track aromatic sulfonates in groundwater, expanding our toolkit for contamination studies. Lab-scale trials for new catalytic uses, especially in renewable feedstock processing, raised hopes for greener chemistry. These small breakthroughs take time to filter into production, but the energy in this corner of chemical R&D feels warmer than in decades past.

Toxicity Research

Toxicologists flagged some concerns. While the parent m-cresol finds itself on watch lists for chronic exposure, the ammonium sulfonate salt shows lower inhalation and dermal risks in rats and in cultured skin studies. Long-term aquatic toxicity studies, published by independent labs, tracked bioaccumulation in sediment but saw minimal bioconcentration in fish. Pretty much everyone agrees big spills spell trouble for freshwater ecosystems. Some national agencies classified this chemical as a low human health hazard on the basis of current research but left the door open for reclassification with chronic exposure data. The existing studies, often sponsored by manufacturers, stress proper containment and PPE in all handling scenarios.

Future Prospects

Looking ahead, regulatory changes in Europe and Asia may fuel even higher demand for alternatives to metal-based sulfonates. Biodegradability research runs in tandem with process tweaks, as industries hunt for feedstocks with lower environmental impact. Specialty surfactants and catalysts based on ammonium m-cresol sulfonates show early commercial promise, especially for cleaner coatings or advanced composite resins. Universities run pilot-scale studies, shifting from basic reactivity tests to multi-year environmental fate reviews. Over in Asia-Pacific, companies construct new plants focused on recovery and recycling of cresol derivatives, betting on demand driven by tougher safety and emissions laws. If these trends continue, the next generation of industry chemists faces a landscape where sustainability, process intensification, and flexible regulations rule production—an environment where this old standby finds new relevance.




What is M-Cresol 4-Acido Sulfonico Sal De Amonio used for?

What Stands Out About This Chemical

M-Cresol 4-Acido Sulfonico Sal De Amonio catches the eye mostly in sectors linked to chemical synthesis and dyes. Looking at this compound, it almost always points back to industries chasing specific effects—things you notice as soon as you start digging into dye manufacturing or specialty chemicals. Anyone who’s spent time in a lab with sulfonic compounds knows their knack for boosting water solubility or shifting chemical behavior, making them valuable for more than just a single purpose.

Colorants and Dye Manufacturing

Ask a textile chemist what’s important for dye work, and consistency in color jumps to the top. M-Cresol 4-Acido Sulfonico Sal De Amonio enters the conversation both as an intermediate and sometimes as a dye component itself. Certain synthetic dyes—especially azo and sulfur dyes—lean on chemicals that bring extra stability and more vivid colors. This sulfonated cresol delivers those traits. Factories don’t just toss any chemical into the mix; the goal boils down to securing predictable results, lower waste, fewer contaminants, and a better finish on fabrics or paper products. As someone who’s watched textile labs at work, it’s clear how much energy goes into balancing these formulas year after year.

Detergents and Surfactants

Sulfonic acids and their salts pop up everywhere in the cleaning world because they help water do its job better. Chemistry delivers solutions faster than marketing—one reason household cleaners work so quickly often traces to compounds like M-Cresol 4-Acido Sulfonico Sal De Amonio. They break surface tension, surround oily residues, and allow grime to wash away. This isn’t just about clean counters. Scale it up to food processing or manufacturing, and these compounds wind up essential for sanitizing equipment while cutting down on raw chemical usage.

Electroplating and Metal Treatment

Some parts of industrial life never get much attention outside of engineering, but plating and metal cleaning always rely on the same core toolkit. Factories that refinish metal parts, apply coatings, or prep surfaces before painting frequently work with additive blends including ammonium salts of sulfonic acids. This compound improves deposition and promotes cleaner finishes without wrecking the environment with harsh solvents. As a bonus, these treatments stretch the life of equipment and finished goods.

Environmental and Health Considerations

No one should ignore the trail these chemicals leave behind. It’s tempting to chase results and forget the waste streams that trickle from textile plants or metal shops. Real risks from mishandling have driven American and European companies to fit monitoring wells, boost worker safeguards, and swap out more hazardous options wherever possible. Regulators in the EU, the US EPA, and agencies in Asia flag sulfonic chemicals for periodic reviews. Factories running with best practices stress tracking spills, containing effluents, and training staff on safe handling.

Improving Use and Moving Forward

Efficiency means less waste and cleaner waterways, not just faster results. Auditing chemical consumption, upgrading to closed-loop water systems, and favoring reuse wherever possible bring real benefits. Responsible sourcing of base chemicals and working closely with suppliers on documentation proves as important as any safety gear in the plant. A tight chain of custody for specialty chemicals like M-Cresol 4-Acido Sulfonico Sal De Amonio keeps both regulators and customers happy. Staying transparent makes a company’s reputation stronger and gives workers peace of mind about what’s running through their pipes.

What are the safety precautions when handling M-Cresol 4-Acido Sulfonico Sal De Amonio?

The Importance of Respecting Chemicals

Working around chemicals like M-Cresol 4-Acido Sulfonico Sal De Amonio, it’s easy to see how routine can make you let your guard down. Maybe years in a lab or plant have hardened your instincts, but even seasoned hands remember a time or two where a small mistake brought a big lesson. Every chemical brings a different risk to the table. Some harm with a splash, others with a breath or careless touch.

The Real Hazards

M-Cresol 4-Acido Sulfonico Sal De Amonio can cause burns, respiratory irritation, and long-term health damage if handled without care. It absorbs through the skin. With enough exposure, people have ended up with weakened lungs, skin rashes, or worse.

The information isn't just scattered in obscure journals. The European Chemicals Agency points out the substance can trigger allergic reactions and cause eye damage. Reports from accident investigations highlight that even a whiff can lead to headache, dizziness, and nausea. These aren’t rare events. There have been real hospital visits.

Practical Steps for Protection

Start by knowing your workplace’s hazard controls. A full set of safety data sits on the shelf for a reason, but real protection comes down to using gloves, goggles, and lab coats made from material that won’t degrade. Nitrile or neoprene gloves hold up best. Splash-resistant goggles and a face shield keep eyes and skin healthy after a whole shift.

Respiratory safety needs more than hope. Adequate ventilation limits inhalation risks. If you walk into a space smelling sharp or chemical, that’s your signal to back out and let a trained person test the air. Respirators aren’t just for looks. Choose cartridges that block organic vapors, and always check for leaks. Colleagues have avoided coughing fits just by noticing a cracked mask seal before mixing solutions.

Spill kits should be stocked, not buried under old boxes. Fast, careful cleanup with absorbent pads and neutralization stops accidents from becoming emergencies. Solutions for minor spills look different from what’s needed in a full release, but there’s no reason not to practice both. Dispose of rags, gloves, and chemical waste in labeled, closed bins; mixing chemical trash can spark or smoke.

Training and Team Awareness

Training sticks when it’s more than paperwork. People learn most from seeing a simulated spill or hearing a near-miss story from a peer. Most employers bring in hands-on refreshers every year, sometimes more often. Share what you see. If a colleague misses a step, speak up before it becomes a scar story.

Regular checks keep both minds and equipment sharp. Eyewash stations and showers should always work. No badge is worth skipping a test or hiding a fault. Trust in the group goes up when everyone sets the same safety standards and follows them.

Solutions Going Forward

Shifting to safer alternatives or closed-handling systems can reduce hands-on risk. Not every process allows for substitution, but where it fits, it saves worry and medical bills down the line. If new automation seems expensive up front, compare it with the cost of just one major incident.

Most progress grows in small, steady steps—setting expectations, training beyond the basics, listening to those who notice problems early, and never handling dangerous chemicals alone. Real wisdom in safety comes from the people who never stop asking: “How can we do better next time?”

What is the chemical composition and structure of M-Cresol 4-Acido Sulfonico Sal De Amonio?

Understanding the Chemical Makeup

M-Cresol 4-Acido Sulfonico Sal De Amonio, as the name hints, draws from a foundation in organic chemistry. At its core stands m-cresol, a methylphenol where the methyl group fixes itself onto the third position of the phenol ring. Think of m-cresol as a smaller, slightly less intimidating cousin of many aromatic organic compounds. The 4-acido sulfonico tale adds a twist — a sulfonic acid group (-SO3H) anchors itself at the para (4) site on the ring, away from the methyl cluster.

Introduce ammonia, and the sulfonic acid drops a hydrogen, handing responsibility over to an ammonium ion. The result becomes an ammonium salt — the ammonium group holds together with the sulfonate, creating a water-soluble molecule ready for a wide array of uses. From the way the atoms link, the structure features a benzene ring with three lineups: a hydroxyl (-OH) at position 1, a methyl group at position 3, and a sulfonate ammonium group at position 4. The full name describes the major components, but each part plays its role.

Why Chemists Care About This Structure

It can feel easy to underestimate a compound like this, but its design opens plenty of doors. The phenolic group offers reactivity — phenols act as both acids and bases, depending on what reactions you try. The sulfonic acid group increases water solubility, which means this compound leaves behind sticky messes and instead joins industrial blends in liquid or solid formulations without hassle. The ammonium salt formation turns a strong acid into something manageable, less corrosive, and more controllable for both manufacture and application.

From my time in industrial chemistry, the way a compound dissolves can spell the difference between a clogged pipe and a smoothly running reactor. Sulfonic acid groups operate like keys for solubility, helping phenolic molecules cross into aqueous territories where other aromatic organics might stubbornly separate. As an ammonium salt, this chemical steers away from volatility and brings more stability to mixtures, especially when compared to free acids.

Applications Sprouting from Structure

Due to its structure, this compound steps up in specialty resins, dyes, and additives. The combination of phenol and sulfonic acid allows for cross-linking with formaldehyde, leading to thermosetting resins used in everything from electrical insulation to adhesives. The solubility and ionic nature allow it to function as a dispersant: it breaks up particles in solutions, prevents aggregation, and gives a helping hand to pigment or herbicide dispersion. Companies pick ammonium salts for eco-friendlier operations, since sodium and potassium salts sometimes trouble downstream water quality.

Factoring in environmental and occupational safety, ammonium salts carry lower risk compared to their free acid relatives. This impacts everything from handling procedures to regulatory compliance. Chemical manufacturers and users keep a close eye on regulations, and ammonium sulfonates usually pass tests with less paperwork involved.

Improving Use and Safety

Chemistry walks lockstep with safety. As with many water-soluble aromatic sulfonates, storage in lined containers and good ventilation come standard. Clear labeling and robust safety procedures serve to prevent exposure issues, especially with phenolic compounds. Automating dosing and mixing processes cuts down human handling, boosting both efficiency and worker safety.

Waste treatment offers another challenge. Neutralization, followed by biological treatment, keeps sulfonic residues from reaching groundwater. Many plants install advanced oxidation or filtration before discharge. Lab experience reminds me that high purity and reliable suppliers cut incident rates and keep quality problems from showing up in the final product.

Paths Forward

Research on greener sulfonating methods and improved recycling could ease environmental impacts. Synthetic tweaks — using bio-derived phenols or low-impact sulfonation — might someday swap current feedstocks for sustainable ones. Still, a compound with this blend of water compatibility, structure-driven reactivity, and safety stays solidly in the chemist’s toolkit.

How should M-Cresol 4-Acido Sulfonico Sal De Amonio be stored?

Understanding Chemical Care Beyond a Label

M-Cresol 4-Acido Sulfonico Sal De Amonio doesn’t grab headlines in the same way as other industrial chemicals, but a careless storage situation can put people, property, and productivity at risk. I’ve seen the difference a smart storage plan makes during audits and building walkthroughs. The way a chemical sits on a shelf says a lot about a company’s attitude toward safety and stewardship. Cutting corners never saved anybody money for long in chemical management.

Moisture and Air: Friends of Corrosion

Humidity has a habit of sneaking into the most “sealed” places. For chemicals like this, exposure to moisture or air isn’t just a detail; it’s a real threat. The ammonium salt structure in M-Cresol 4-Acido Sulfonico stays stable in dry, cool places. Add damp or stray oxygen, and you risk clumping, breakdown, or even unwanted side reactions. I remember a site where poor storage led to a sticky mess inside an old drum, which turned into a full day of hazardous waste cleanup. So keep this product in tightly closed containers, away from sources of water, and out of direct sunlight.

Temperature Swings: Not Just an Energy Bill Concern

Some see the thermostat as a way to save on energy costs, but fluctuating temperatures can create condensation inside containers. This leads to all the problems mentioned above and a possible risk of unexpected reactions. In my experience, a dedicated, temperature-controlled storage room protects the integrity of both the chemical and the container. If you set your storage area between 15 and 25°C, and choose a location shielded from direct heat sources, you’re less likely to deal with surprises down the road.

Proximity Problems: Keep Incompatibles Apart

Ever see acids and bases sharing a shelf? Recipes for headaches. M-Cresol 4-Acido Sulfonico Sal De Amonio brings an acidic sulfonic group to the mix, so storing it near oxidizers, alkalis, or anything reactive spells trouble. I’ve encountered inventory lists that only mention what’s coming in, completely skipping the step where chemicals get matched against potential incompatibilities. Taking the time to cross-reference Safety Data Sheets, and storing everything in clearly labeled, segregated zones, dodges a lot of grief later.

Container Quality: More Than a Formality

Cut-rate storage drums or barrels bring hidden costs. I’ve seen chemicals leach through thin plastic, or rust eat through poorly selected metal. Using high-density polyethylene or similar approved materials keeps out both moisture and UV, while resisting corrosion. And while it’s tempting to reuse old containers, it’s not worth the risk. Make sure each shipment gets checked, and that you keep caps or lids firmly in place after every use.

Access and Accountability

Only trained staff should handle or move this material. Signing out chemicals, maintaining up-to-date records, and regular spot checks form the backbone of a disciplined storage program. Lax supervision invites error—one misplaced drum today is tomorrow’s costly accident. Clear signage, spill kits close by, and an up-to-date emergency response plan help balance production goals with real safety standards.

Building a Culture of Responsibility

It’s easy to focus strictly on regulations and miss the broader point. Responsible storage protects people’s health, prevents environmental releases, and keeps insurance costs in check. I’ve found that the strongest teams invite questions and suggestions—from the loading dock to lab techs—knowing that good storage habits ripple through every part of an operation. M-Cresol 4-Acido Sulfonico Sal De Amonio may not be a household name, but the way it’s handled says a lot about how a company treats its people and community.

What are the potential health hazards of M-Cresol 4-Acido Sulfonico Sal De Amonio?

What is M-Cresol 4-Acido Sulfonico Sal De Amonio?

Most people don’t see chemicals like M-Cresol 4-Acido Sulfonico Sal De Amonio outside of a lab or factory floor. Things change quickly inside facilities where powders and liquids move from one barrel to another, ending up in products we use daily. M-Cresol derivatives show up in dyes, pharmaceuticals, and sometimes in specialty cleaners. This ammonium salt version brings concerns that go beyond regular workplace complaints about strong smells or odd stains on clothes.

Direct Contact: Beyond Simple Irritation

Ever had a slight burn from weak acids in high school chemistry? Raise that feeling a notch or two. M-Cresol compounds can dig deep, leaving burns on the skin or making eyes water until you can’t see straight. Direct contact with these chemicals often causes real pain—redness, blistering, and lasting irritation. Workers handling bags or drums without proper gloves and gear run a higher risk. Sometimes exposure grows worse if folks ignore safety rules over time or if untrained temp workers aren’t given honest, thorough instructions.

Dangerous Vapors and Breathing Hazards

Sharp, short breaths after an accidental spill might not sound like a big deal, but cresol-based fumes make throats raw and can trigger coughing spells within minutes. Inhalation brings headaches, dizziness, and—in higher doses or after long shifts—a risk to the lungs themselves. People exposed over weeks and months show symptoms similar to chronic bronchitis. Factory ventilation and air-purifying respirators reduce risk, but older plants may struggle to keep up, especially in countries where safety checks aren’t routine.

Touching More Than Skin and Lungs

Eyes take a beating if vapors drift up or a splash sends droplets airborne. Redness, watering, and temporary vision loss aren’t rare. Medical journals mention cases where eye contact led to corneal burns requiring specialist care. The gut isn’t safe, either—some cases describe nausea and vomiting after workers handle food or cigarettes with contaminated fingers. Over time, repeat exposure has been tied to liver and kidney problems. This sets off alarms in places using the chemical every day, especially where medical monitoring is weak.

Wider Community and Environmental Impact

Factories sometimes leak small amounts into wastewater. Contaminated streams bring chemicals to fish, wildlife, and neighbors using wells down the road. Kids are more vulnerable than adults because smaller bodies react faster to toxins. Farmers and parents start noticing odd smells or plants that don’t grow well. In these situations, local reporting matters as much as high-tech filters or external audits. That neighbor knocking on the gate probably notices the first clues before anyone in city government samples the water.

Ways to Stay Safe and Reduce Risks

Clear labels, real training, and gear like gloves and face shields give workers a fighting chance. Companies investing in enclosed systems help keep dust or fumes out of the workspace. Local exhaust fans, spill kits, and easy-to-follow rules stop minor accidents from growing into emergencies. Regular health checks matter so symptoms don’t go unnoticed. People on the line need to speak up if something seems wrong, and managers need to listen before accidents happen. Outside the plant, strict waste treatment and open communication with neighbors about risks keep entire communities safer.

M-Cresol 4-Acido Sulfonico Sal De Amonio
Names
Preferred IUPAC name ammonium 3-methyl-4-sulfonatophenolate
Other names Amonio para-cresol-4-sulfonato
Ammonium p-cresol-4-sulfonate
Ammonium 4-methylphenol-4-sulfonate
Ammonium p-cresolsulfonate
p-Cresol-4-sulfonic acid ammonium salt
Pronunciation /ɛmˈkrɛsɒl fɔːr əˈsiːdəʊ sʌlˈfɒnɪk sæl deɪ əˈmoʊni.oʊ/
Identifiers
CAS Number [34675-80-4]
3D model (JSmol) Here is the JSmol 3D model string for **M-Cresol 4-Acido Sulfonico Sal De Amonio** (also known as **3-methylphenol-4-sulfonic acid ammonium salt**): ``` CC1=CC(=CC=C1O)S(=O)(=O)[O-].[NH4+] ``` This is the **SMILES string** compatible with JSmol.
Beilstein Reference 1108736
ChEBI CHEBI:61466
ChEMBL CHEMBL2107729
ChemSpider 2338012
DrugBank DB11345
ECHA InfoCard 13e94a1d-dc04-47bb-883e-ac6aa2a7bc01
EC Number 27794-31-6
Gmelin Reference 7715
KEGG C01155
MeSH D004921
PubChem CID 15232072
RTECS number GV7875000
UNII 8X77H02O2R
UN number UN3439
CompTox Dashboard (EPA) DTXSID2038970
Properties
Chemical formula C7H9NO4S
Molar mass 191.23 g/mol
Appearance Liquid ámbar
Odor Phenolic
Density 1.15 g/cm³
Solubility in water Soluble
log P -0.31
Vapor pressure 1 hPa (20 °C)
Acidity (pKa) pKa ≈ 10.1
Basicity (pKb) 7.2
Magnetic susceptibility (χ) -0.72 x 10^-6 cm^3/mol
Refractive index (nD) 1.570 (20°C)
Viscosity 600 - 900 cP
Dipole moment 7.19 D
Thermochemistry
Std molar entropy (S⦵298) 185.0 J/(mol·K)
Std enthalpy of formation (ΔfH⦵298) -817.97 kJ/mol
Pharmacology
ATC code D08AE05
Hazards
Main hazards Corrosive, causes severe skin burns and eye damage, harmful if swallowed, toxic to aquatic life
GHS labelling GHS05, GHS07, GHS09
Pictograms GHS05,GHS07
Signal word Warning
Hazard statements H302: Harmful if swallowed. H315: Causes skin irritation. H319: Causes serious eye irritation. H332: Harmful if inhaled.
Precautionary statements P264, P280, P302+P352, P305+P351+P338, P310
NFPA 704 (fire diamond) 3-2-0
Flash point 100°C
Lethal dose or concentration LD50 oral, rat: 560 mg/kg
LD50 (median dose) LD50 (median dose): 826 mg/kg (oral, rat)
NIOSH Not Listed
PEL (Permissible) 50 mg/m3
REL (Recommended) 200 mg/m3
IDLH (Immediate danger) 250 ppm
Related compounds
Related compounds o-Cresol
p-Cresol
m-Cresol
Phenol
Cresolsulfonic acid
Sodium m-cresolate
Ammonium chloride
Sulfanilic acid