© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Name: 5,6,7,8-Tetrahydroquinoline
Chemical Formula: C9H11N
Appearance: Colorless to pale yellow liquid, faint aromatic smell
Common Uses: Sits on the shelf as a building block for dyes, pharmaceuticals, and organic synthesis
Molecular Weight: 133.19 g/mol
Synonyms: Tetrahydroquinoline, THQ
Main Risks: May trigger skin and eye irritation, possible respiratory issues from inhalation
Warning Labels: Harmful if swallowed
Physical Dangers: Moderate fire risk, forms irritating fumes on burning
GHS Symbols: Exclamation mark (for irritation)
Major Concern: Not listed as carcinogen, but direct contact earns a spot on the “don’t touch barehanded” list
Chemical Identity: 5,6,7,8-Tetrahydroquinoline
Purity: Typically over 95% in lab supply bottles
Contaminants: Trace aromatic amines possible
Additives: None expected in standard chemical purchases
Eye Contact: Rinse gently with plenty of water, keep eyelids apart
Skin Contact: Wash off with soap and water, strip contaminated clothing
Inhalation: Move outdoors or to fresh air; seek medical help for persistent symptoms
Ingestion: Rinse mouth, do not induce vomiting, call a doctor or poison control
Medical Attention: Seek further care if symptoms continue after first response
Extinguishing Media: Use foam, carbon dioxide, dry chemical
Hazards from Fire: Emits nitrogen oxides and toxic fumes under fire
Protective Gear: Firefighters need self-contained breathing apparatus
Special Tactics: Cool exposed containers with water to prevent pressure
Personal Precautions: Wear gloves, goggles, and a face mask
Spill Clean-Up: Ventilate the area, contain with absorbent material
Environmental Steps: Prevent spills from entering drains
Waste Disposal: Shovel into chemical waste containers
Handling: Avoid inhalation, ingestion, and skin eye contact; use in well-ventilated place
Protective Steps: Use local exhaust or chemical fume hood
Storage: Keep containers tightly sealed; stash in cool, dry area out of sunlight
Separation: Store away from strong oxidizers and acids
Exposure Limits: No regulatory limit set for workplace exposure
Ventilation: Good lab ventilation makes a real difference here
Personal Protection: Gloves (nitrile or neoprene), chemical splash goggles, lab coat, closed shoes
Respiratory Protection: Use approved respirator if vapor generation is likely to spike
Hygiene Steps: Wash hands before eating and after use
Boiling Point: Roughly 240°C
Melting Point: -18°C
Flash Point: 95°C (closed cup)
Solubility: Slightly soluble in water; miscible with organic solvents
Odor: Faintly like quinoline; nothing nice
Evaporation Rate: Slow
Vapor Density: Heavier than air
Stability: Stable under normal conditions
Stability: Sits steady at room temperature if sealed
Hazardous Reactions: Can react with strong oxidizers and acids
Hazardous Decomposition: Fires bring out nitrogen oxides, irritating organic vapors
Conditions to Avoid: Heat, open flame, incompatible chemicals
Routes of Exposure: Inhalation, ingestion, skin, eyes
Short-Term Effects: Irritation to skin, eyes, airways; nausea possible if swallowed
Long-Term Effects: Information limited; no clear studies on chronic toxicity
Carcinogenic Status: Not listed by IARC, NTP, OSHA
Special Concerns: Skin absorption risk if worn long; avoid buildup
Environmental Impact: Not classified as highly hazardous to aquatic life, but runoff brings harm
Persistence: May not break down quickly, can bioaccumulate
Wastewater: Should not be flushed unchecked; hold for proper disposal
Soil and Water Mobility: Leaching possible, especially with spills
Waste Treatment: Collect for hazardous waste handling
Disposal Method: Take to chemical collection program approved for organics
Container Disposal: Triple rinse, then remove labels before discarding
Drain Disposal: Avoid at all costs; stick to approved routes
Shipping Name: 5,6,7,8-Tetrahydroquinoline
Hazard Class: Not regulated as dangerous for most ground transport; always double-check for international shipping
Packing Instructions: Keep sealed, upright, and padded in transit
Spill Precautions: Know your emergency kit and spill plan before sending it out
US Regulation: Not flagged under TSCA; keep an eye on state-level rules
EU Regulation: Not classified under REACH as a major hazard
Workplace Safety: Use common sense: good records, training for users, emergency plans ready
Labeling: GHS/OSHA required warnings for skin, eye, and ingestion hazards
