Substance Name: Pyrogallol
Chemical Formula: C6H6O3
Other Names: Benzene-1,2,3-triol
CAS Number: 87-66-1
People in analytical labs, pharmaceutical research, and even old-school photography sometimes handle this chemical. The white crystalline powder dissolves in water, stands out with a faintly sweet odor, and despite its sometimes common uses, should never fly under the radar for risks.
Acute Health Hazards: Skin, eye, and respiratory irritation; can cause systemic toxicity if ingested or improperly inhaled
Chronic Hazards: Potential effects on blood and liver after long-term exposure; evidence of mutagenic effect in lab animals
Environmental Hazards: Toxic to aquatic organisms, may cause long-lasting effects
Nobody likes a trip to the emergency room, so handling pyrogallol without respect for its risks invites serious health hassles. Skin contact sets off redness and burns, inhalation leads to cough and labored breathing; that shouldn’t surprise anyone familiar with handling lab-grade chemicals. Overdose stories in textbooks tell of blood issues and oxygen trouble, so this isn’t a compound to treat casually.
Main Ingredient: Pyrogallol (Chemical Purity varies by supplier, often over 99%)
Dirt-cheap chemicals on the market might carry unlabeled fillers; here, the main concern is pure pyrogallol itself. Some suppliers might add trace stabilizers or anti-caking agents, but across credible inventories, the active ingredient dominates the table.
Eye Contact: Rinse with water for at least 15 minutes; always get medical advice
Skin Contact: Remove contaminated clothing and rinse skin; if reaction starts, follow up with a doctor
Inhalation: Get into fresh air, monitor for breathing issues, and seek medical attention
Ingestion: Rinse mouth, do not induce vomiting, get medical help
No one wants to relive high school chemistry emergencies, so the fastest, simplest actions make the big difference. Pyrogallol isn’t something to wash off and forget—delayed effects happen, so even after basic steps, someone competent should check you out.
Suitable Extinguishing Media: Water spray, dry powder, foam, carbon dioxide
Special Hazards: Releases toxic fumes under heat—carbon monoxide, carbon dioxide, phenols
Protective Equipment: Self-contained breathing apparatus, chemical-resistant gear
This stuff doesn’t set itself ablaze at room temperature, but a fire nearby changes the math. Smoke and fumes from burning pyrogallol can poison a whole room without warning. Anyone fighting a chemical fire needs to suit up and avoid breathing the vapors, or else risk something far worse than smoke inhalation.
Personal Protection: Gloves, goggles, suitable mask; avoid skin and eye contact
Spill Response: Shovel up the solid without raising dust, ventilate area, wash residue with plenty of water
Environmental Precautions: Prevent spilled material from getting into drains or watercourses
Dropping a bottle of pyrogallol in the sink wins no awards for lab safety—one mistake and toxic powder can run into drains and fish habitats. Manual cleanup works, but only for those who come armed with gloves and courage. Closing doors, turning on fans, and letting trained staff take over counts for much more than bravado or improvisation.
Handling: Keep containers tightly sealed, avoid breathing dust or vapors, use inside fume hoods
Storage: Store in cool, dry places away from strong oxidizers, acids, and direct light; label containers clearly
Labs sometimes cut corners, but pyrogallol deserves better. No one wants poorly sealed powder wafting across benches or corroding containers left in steamy storage rooms. Proper storage matters just as much as careful weighing; even experienced researchers lose product or risk accidents from poor labeling and slapdash lids.
Engineering Controls: Use chemical fume hoods, local exhaust systems, keep air exchange up
Personal Protective Equipment: Gloves made from nitrile or neoprene, lab coats, eye protection, dust masks or respirators when dust forms
Modern labs often underestimate the sneaky ways fine powders escape containment. Wearing gloves means nothing if you rub your eye five minutes later. Lab gloves, safety goggles, and mask discipline set experts apart from amateurs; an air exchange system is not just for show.
Appearance: White crystalline powder
Odor: Slight; sometimes described as sweetish
Solubility: Soluble in water, alcohol, ether
Melting Point: 131–133°C
Boiling Point: Decomposes before boiling
People working with this powder notice how dust floats with every uncareful scoop. Its melting and boiling points rarely matter outside synthesis, but knowing these numbers helps prevent misjudgments in high-temperature or solvent-heavy work.
Stability: Stable in cool, dry, dark storage
Incompatible Materials: Strong oxidizers, acids, iron salts
Decomposition Products: Carbon monoxide, carbon dioxide, other organic fumes
Pyrogallol threatens stability alongside strong chemicals like bleach and acids, but sometimes less obvious combinations set off surprises. I’ve seen corrosion rings and black stains weeks after a single poor decision with incompatible storage. Speaking from experience, segregate this stuff or pay the price later.
Acute Toxicity: Harmful if swallowed, inhaled; skin absorption leads to systemic symptoms
Chronic Effects: May affect blood and liver with repeated exposure
Irritation: Yes—be ready for skin, eye, and respiratory tract reactions
Other Risks: Reported mutagenicity and possible carcinogenicity in animal testing, though with limited human data
In college, seeing an instructor’s scars from pyrogallol brought home the fact that short-term pain isn’t always the end of the story—long-term effects sit in the background, undetected until it’s too late for apologies.
Aquatic Toxicity: Toxic to aquatic life, especially fish and small invertebrates
Persistence and Degradability: Tends to break down slowly, lingering if released into soil or water
Bioaccumulation Potential: Low to moderate, depending on local conditions
Once pyrogallol escapes the lab into drains or streams, the effects stick around. High toxicity to aquatic creatures makes even small spills more than just a local lab headache. Seeing warnings from regional fishery biologists pierced the myth that small labs can't make a big environmental mess.
Waste Disposal: Incinerate in a licensed chemical incinerator; keep away from general trash and sewage
Contaminated Containers: Treat as hazardous, triple-rinse and turn in to qualified disposal services
People tossing old vials in regular trash shift problems downstream to sanitation workers, landfill operators, and eventually wildlife. Coordinated hazardous waste disposal doesn't win popularity contests, but it stops the cycle of environmental damage and regulatory penalty chases.
UN Number: 2811 (for toxic solids, organic, n.o.s.)
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: III (low danger, but not negligible)
Roadside checks or missed hazard labels waste everyone’s time, endanger first responders, and increase risk for those nowhere near the lab. Ensuring clean paperwork and well-marked containers helps drivers, handlers, and emergency workers do their jobs safely.
Hazard Labels: Toxic, Environmental Hazard
Regulated Under: OSHA, EU REACH, Safe Work Australia, and similar national bodies
Pyrogallol lands on multiple regulatory radars; watchdog agencies pay close attention to its distribution, labeling, and end-of-life handling. Following up-to-date regs covers more than just legal bases—it anchors safety culture, avoids costly penalties, and protects the people who put hands on the compound each day.
Providing high-quality chemical products and logistics solutions for global trade partners.
