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Name: Hydroxymethylcyclohexane
Chemical Formula: C7H14O
Synonyms: Cyclohexanemethanol
CAS Number: 100-49-2
Appearance: Clear liquid or crystalline solid, nearly colorless, mild alcohol-like odor
Uses: Used in manufacturing and as a chemical intermediate, particularly for producing certain resins and plasticizers in industrial settings
Personal Experience: Many labs and manufacturing floors keep containers of cyclohexanemethanol for specific synthesis work, usually segregated among other alcohols for safety.
Main Hazards: Skin and eye irritation, potential inhalation hazard in poorly ventilated workspaces, risk of combustibility typical for many organic compounds containing alcohol groups
Routes of Exposure: Skin contact, eye contact, inhalation of vapors, accidental ingestion
Chronic Effects: Generally low chronic toxicity at normal workplace exposures, though frequent unprotected contact raises risk of dermatitis or respiratory irritation
Pictograms: GHS07 (exclamation mark for irritant)
Observations: Irritation is common if you get this compound on your hands repeatedly. Gloves and goggles always make a difference.
Main Component: Hydroxymethylcyclohexane—often sold at purity levels greater than 98%
Impurities: May contain trace byproducts depending on the manufacturing method, like cyclohexanol or water
General Assessment: Standard handling minimizes cross-contamination. It’s a simple enough compound, but any unexpected impurity in a tightly controlled process can cause trouble.
Skin Contact: Immediate washing with water and soap removes most of the compound and usually prevents irritation
Eye Contact: Rinse cautiously with clean water for several minutes; get medical attention if redness or pain persists
Inhalation: Move to fresh air if vapors are bothersome; seek medical help if symptoms don’t resolve
Ingestion: Rinse mouth; don’t induce vomiting; professional medical treatment advised
Notes from Practice: Once had a splash on the forearm—washing right away stopped any redness. Keeping an eye-wash station close saves a lot of grief.
Extinguishing Media: Water spray, foam, dry chemical, or carbon dioxide usually do the trick for small fires
Specific Hazards: Vapors may form explosive mixtures with air in hot environments, releasing toxic fumes during burning such as carbon monoxide
Protective Equipment: Firefighters need self-contained breathing apparatus and chemical-resistant gear
Lessons from Incidents: In shared spaces, it’s best to avoid stacking flammable solvents together. An easy grab at a busy moment lets you move chemicals to safety faster.
Personal Protection: Gloves, goggles, lab coat, and proper ventilation reduce personal risk during clean-up
Spill Response: Small spills get absorbed with sand or inert material, collected in sealed containers; always ventilate the area
Decontamination: Water and detergents clear residue from surfaces
Real-World Approach: A minor spill always seems bigger when the smell hits your nose. Better to overprepare—having spill kits accessible makes a difference.
Safe Handling: Wear gloves, goggles, and avoid breathing vapors; don’t eat or drink in designated chemical spaces
Storage Conditions: Keep containers closed and stored in a cool, well-ventilated, fire-resistant space, away from heat sources or open flames
Segregation: Avoid storing alongside oxidizers or acids
Personal Take: Putting Hydroxymethylcyclohexane away from acids and strong oxidizers matters more than it might seem—old fridges sometimes get crammed with incompatible bottles.
Ventilation: Local exhaust keeps concentrations low, especially if the process heats up
Personal Protective Equipment: Nitrile gloves, chemical safety goggles, standard lab coats; face shield for bulk handling
Exposure Limits: No established OSHA or ACGIH limits for this specific compound, but treat it as a general irritant
My Experience: Skipping gloves for just one transfer left my hands dry and itchy the next day. The more you sweat, the more this stuff finds little cracks in your usual defenses.
Physical State: Liquid or crystalline solid depending on storage temperature
Color: Colorless
Odor: Mild, reminiscent of alcohol with a subtle undertone
Boiling Point: Around 172°C at atmospheric pressure
Melting Point: Slightly above room temperature
Solubility: Moderately soluble in water; fully miscible with many organic solvents
Density: Approximately 0.95-0.97 g/cm³
Flash Point: Around 68°C
Comments: Volatility stays low in most standard lab conditions. Spillage evaporates more slowly than lighter alcohols, but don’t ignore open dishes or spills.
Chemical Stability: Stays stable at standard temperature and pressure, out of direct sunlight and away from strong acids
Reactivity: Can react with strong oxidizers, raising risk of fire or decomposition
Hazardous Decomposition Products: Carbon monoxide and carbon dioxide on ignition
Lab Observation: Storing a sealed bottle for a year or two didn’t change appearance or smell, but always check; contamination or slow breakdown shows up as color changes or odd odors.
Acute Toxicity: Low—oral and skin LD50 values in animal studies sit in the high range for alcohols, but irritation is common
Eyes and Skin: Signs of irritation, redness, or dryness after repeated contact
Inhalation Risk: Short-term exposure mostly causes minor nose or throat irritation
Chronic Effects: Few long-term studies; large doses over extended time could harm kidneys or liver, as with many small molecule alcohols
Real-World Note: Handled carefully, Hydroxymethylcyclohexane behaves much like safer lab alcohols, though regular swaps for clean gloves and good ventilation beat any guesswork about long-term effects.
Environmental Fate: Degrades slowly in water and soil via microbial action, doesn’t persist in nature as much as heavier industrial solvents
Aquatic Toxicity: Limited data, but similar alcohols show moderate fish and daphnia toxicity with direct dumping
Bioaccumulation: Unlikely given chemical structure, but good practice always minimizes chances for runoff
Personal Reflection: Using proper waste channels feels like extra work, but it prevents this compound from running straight into lab sinks or storm drains.
Disposal Methods: Incineration at an approved waste facility for organic chemical waste
Small Quantities: Collected with other lab solvents for hazardous waste pickup
Septic Unsuitability: Direct disposal into drains or natural environments remains a poor choice
Common Pitfalls: Temptation to “rinse away” leftovers leads to bigger problems—solid waste handling always means slower but safer returns for everyone.
UN Number: UN 1993 (for flammable liquid, n.o.s., depending on concentration and packaging)
Hazard Class: 3 (for flammable liquids)
Packing Group: III (low to moderate hazard profile)
Transport Practices: Secure containers, clear labeling, and separation from foodstuffs and oxidizing agents play the largest roles; anyone moving these drums gets a refresher on spill control and paperwork.
Regulatory Listings: Not classified as a major hazard material under most chemical regulations, but covered by general provisions for flammable and irritant substances
Workplace Standards: Standard chemical hygiene rules, right-to-know communication, and use of up-to-date Safety Data Sheets
Local Considerations: Rules shift by city and state—some labs see stricter disposal and storage requirements. Professional experience reminds that compliance audits almost always turn up labeling or documentation slip-ups more than actual mishandling.
