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Chemical Name: 1,2-Xylene
Synonyms: o-Xylene, ortho-Xylene
Chemical Formula: C8H10
CAS Number: 95-47-6
Appearance: Clear, colorless liquid with an aromatic odor
Uses: Often found in paints, inks, solvents, pesticides, on job sites, and in labs
Main Health Risks: Inhaling vapors can cause breathing problems, headaches, dizziness. Direct skin contact often leads to dryness or irritation. Eyes sting with contact and swelling could follow. Swallowing brings nausea, drowsiness, and coordination loss.
Flammable Risks: Liquid and vapors catch fire easily. Leaks can create explosive mixtures in air.
Symbols and Signal Words: Flammable, Irritant, Health Hazard—labels usually carry these for a reason.
Target Organs: Central nervous system, liver, and kidneys have the most trouble here.
Environmental Hazards: Runoff spills lead to fish kills and waterway contamination.
Main Component: 1,2-Xylene (typically 98% or higher)
Potential Impurities: Sometimes traces of ethylbenzene or other xylene isomers
Concentration: Usually varies based on application, but pure o-xylene dominates the list
Eye Contact: Flush gently but firmly with running water for several minutes, pulling eyelids wide apart. Irritation often means you should see an eye doctor.
Skin Contact: Strip off soaked clothing. Rinse the skin with flowing water, followed by mild soap. Hydrate skin to slow cracking and pain.
Inhalation: Move the exposed person to fresh air, keep them warm and still. If you see slow breathing or unconsciousness, medical attention is not optional.
Ingestion: Avoid forcing vomiting. Rinse mouth with water, rest, and call for help. Doctors need to watch for aspiration pneumonia here.
Suitable Extinguishing Media: Dry chemical powder, foam, or CO2 are the frontline picks. Water fog might tame vapors but won’t always douse the fire.
Specific Hazards: Combustion creates toxic fumes—carbon oxides and sometimes other organics.
Protective Equipment for Firefighters: Self-contained breathing apparatus and chemical-resistant gear stay important.
Advice: Always contain runoff, as burning product can push contamination beyond the blaze and into the soil or drains.
Personal Precautions: Keep people away from the spill, especially anyone not wearing chemical splash goggles and gloves. If indoors, boost ventilation right away.
Environmental Precautions: Stop leaks if safe, block it from drains, and throw absorbents around the edges.
Clean Up Methods: Use inert material—sand or earth—then gather up in properly labeled drums. Wash residue with water and detergent, never bleach.
Disposal: See that the collected waste heads only for permitted chemical disposal, not general refuse.
Handling Practices: Work with it in a fume hood or outside with wind at your back. Never eat or drink on the job. Remove cigarette lighters and ignition sources, as even static can ruin your day.
Storage Needs: Store in tightly sealed containers made from materials that won’t corrode. Stash these in a cool room with explosion-proof ventilation, far away from oxidizers or acids.
Other Precautions: Post hazard signage and keep fire extinguishers well within reach. Spill kits never gather dust for long anywhere xylene is stored.
Engineering Controls: Fume hoods or exhaust fans take care of vapors. Monitor air for xylene using detection tubes or electronic monitors.
Personal Protective Equipment: Splash goggles, chemical-resistant gloves, and coveralls defend against splashes. Respirators (organic vapor type) become essential if ventilation drops below safe limits.
Exposure Limits: OSHA spells out a permissible exposure limit around 100 ppm. Short exposure peaks should not jump beyond 150 ppm.
Hygiene Tips: Wash thoroughly after handling, especially before lunch or after work shifts.
Appearance: Transparent and colorless
Odor: Sharp, sweet, aromatic
Boiling Point: About 144°C (291°F)
Melting Point: -25°C (-13°F)
Flash Point: 32°C (90°F)
Autoignition Temperature: About 463°C (865°F)
Vapor Pressure: 6–8 mmHg at 20°C
Density: 0.88 g/cm³
Solubility: Insoluble in water, mixes well with alcohol and ether
Vapor Density: About 3.7 (air=1)
Chemical Stability: Stable under standard storage and handling.
Potential Incompatibilities: Strong oxidizers—bleach, nitric acid, and perchlorates—spark violent reactions.
Hazardous Decomposition: Fire or intense heat makes carbon monoxide, carbon dioxide, and smoke.
Avoid: Sparks, open flames, static, and heat build-up.
Acute Effects: Can lead to headaches, tiredness, dizziness, and irritation of skin and eyes.
Chronic Effects: Prolonged or repeated exposure may cause liver and kidney strain and nervous system symptoms—memory, mood, even muscle control can take a hit.
Sensitization: Rarely causes allergic reactions, but skin can dry and chap after a few shifts.
Carcinogenicity: Epidemiological studies haven’t linked pure 1,2-xylene to cancer, but impurities like ethylbenzene carry higher risk.
Routes of Exposure: Inhaled vapors, skin absorption, or accidental swallowing
Environmental Fate: Floating on water blocks oxygen flow, hurting aquatic life. Vapor heads for the sky, where sunlight eventually breaks it up.
Toxicity to Aquatic Organisms: Fish, plankton, and insects die off quickly—longer-term harm to ecosystems follows spills.
Persistence: In soil and water, remains for weeks before microbes finish breaking it down.
Bioaccumulation: Builds up in fat tissues of fish and invertebrates, moving up the food chain.
Disposal Methods: Approved chemical incineration works best; don’t dump into sewers or storm drains. Container drums must be rinsed and sealed before heading to recycling or landfill by a licensed contractor.
Spill Residue: Soak up and isolate with fireproof absorbent, label, and ship as hazardous chemical waste.
Regulations: Local, state, and country disposal rules must be checked before moving waste off-site.
Hazard Class: Flammable liquid—UN 1307 for transport
Packing Group: Usually II, signifying medium danger
Shipping Labels: Flammable Liquid, and marine pollutant if shipping by sea
Precautions: Drums and totes stay upright and tightly sealed, away from direct sunlight and heat sources throughout the trip.
Workplace Regulations: OSHA in the US, plus many international agencies, set exposure and workplace controls.
Chemical Inventories: Registered on TSCA, EINECS/ELINCS, and similar listings worldwide.
Reporting Thresholds: Spill or use above certain weights may trigger environmental reporting under SARA Title III and similar acts.
Label Requirements: Flammable, Irritant, and Health Hazard pictograms—alongside hazard, precaution, and storage details in the local language.
