2,3-Difluorophenol: MSDS Critical Points Every Lab Must Face

Identification

Chemical Name: 2,3-Difluorophenol
Chemical Formula: C6H4F2O
Synonyms: 2,3-difluoro-1-hydroxybenzene
CAS Number: 412-86-0
Appearance: Colorless to pale yellow liquid
Odor: Not readily described, can irritate with prolonged exposure
Use Case: Intermediate in synthesis, research labs

Hazard Identification

GHS Classification: Causes skin and eye irritation, respiratory tract irritation
Pictogram: Exclamation mark
Signal Word: Warning
Hazard Statements: May irritate skin and eyes, inhalation causes nose and throat discomfort, ingesting brings real risk of stomach distress
Precautionary Statements: Avoid breathing vapors or mists, use gloves, wash hands thoroughly after handling, avoid ingestion
Potential Health Effects: Short-term skin redness, burning of mucous membranes, coughing, headache if inhaled in closed space

Composition / Information on Ingredients

Main Ingredient: 2,3-Difluorophenol
Concentration: 95%-99%, high purity expected in research settings
Impurities: Usually trace amounts of related difluorophenol isomers, presence dictated by synthesis route, not considered high risk at research scale

First Aid Measures

Eye Contact: Rinse immediately with water, don’t rub, keep eyelids open for at least 10-15 minutes, seek medical advice if discomfort persists
Skin Contact: Remove contaminated clothes, flush skin with plenty of water and soap, see a doctor if irritation lingers
Inhalation: Move to fresh air, loosen tight clothing, support breathing if needed, see a physician for persistent symptoms like dizziness or cough
Ingestion: Rinse mouth, do not induce vomiting as it may aggravate chemical irritation, consult a medical professional at once

Fire-Fighting Measures

Flash Point: Data insufficient for exact value, treat as flammable within standard organic chemical handling
Hazardous Combustion Products: Toxic fumes of hydrogen fluoride and carbon oxides
Extinguishing Media: Carbon dioxide, dry chemical powder, alcohol-resistant foam suitable; avoid direct water jets that may scatter chemical
Advice for Firefighters: Wear self-contained breathing apparatus and protective gear, ventilate area after extinguishing, approach from upwind position

Accidental Release Measures

Personal Protection: Gloves, goggles, long-sleeved clothing, respirator for high vapor risk
Environmental Precautions: Prevent entry into waterways and drains, inform authorities if large spills threaten ecological safety
Methods for Clean-up: Contain with inert absorbers like sand or diatomaceous earth, collect in sealed containers for disposal, clean area with water and soap after removal

Handling and Storage

Safe Handling: Work in a fume hood, do not eat or drink near chemical bench, limit open-bottle handling, label containers clearly
Storage Conditions: Store in tightly closed amber bottles, keep cool, limit heat and direct sunlight exposure, separate from oxidizing agents or acids
Storage Location: Dry, well-ventilated space, always secured from public access, chemical cabinets recommended for shelf stability and spill containment

Exposure Controls and Personal Protection

Engineering Controls: Ventilation crucial, fume hoods preferred for all laboratory manipulations
Personal Protective Equipment: Protective gloves (nitrile or neoprene), goggles, lab coat, face shield in splash risk scenarios
Exposure Limits: No established occupational exposure limit, but prudent to minimize all contact and stay below toxic threshold by controlling airborne concentration
Hygiene Measures: Wash hands before breaks and after ending work day, never touch face during handling, keep contaminated clothing away from home laundry

Physical and Chemical Properties

Physical State: Liquid at room temperature
Color: Colorless to pale yellow
Odor: Irritating, nondescript
Boiling Point: Around 163-166 °C, typical for small molecular phenols with halogen substituents
Melting Point: Data limited but typically below room temperature
Solubility: Limited in water, higher in ethanol or ether
Density: Close to 1.3 g/cm³
Vapor Pressure: Low, though persistent vapor from open containers increases inhalation risk

Stability and Reactivity

Chemical Stability: Stable at room temperature under standard lab conditions
Reactivity: Tends to react with strong oxidizers, acids, or bases
Hazardous Reactions: May produce hazardous gases if heated to decomposition or combined improperly
Conditions to Avoid: Heat, direct light, moisture, strong oxidizers

Toxicological Information

Routes of Exposure: Eyes, skin, inhalation, ingestion
Acute Effects: Irritation of eyes, skin, and respiratory tract
Chronic Exposure: Long-term data sparse, but like many halogenated aromatics, repeated exposure could stress liver and kidneys
Symptoms: Redness, itchiness, coughing, sore throat, nausea after ingestion
Carcinogenicity: No classification as human carcinogen, but not enough studies to rule risk out
Mutagenicity: No strong evidence, research remains incomplete

Ecological Information

Environmental Fate: Not readily biodegradable, fluorinated aromatics are persistent in the environment
Aquatic Toxicity: Harmful to aquatic organisms at higher concentrations, small spills can magnify in closed systems
Soil Mobility: Holds in soil, slowly degrades over time
Bioaccumulation: Potential for slow accumulation noted in small species, warrants careful waste management in labs

Disposal Considerations

Disposal Method: Gather all waste in clearly labeled hazardous-waste containers, hand off to authorized chemical disposal firms
Do Not: Pour in drains, landfill or incinerate with regular trash
Best Practice: Incinerate under controlled conditions, follow all regional hazardous-waste protocols, document waste stream and handover

Transport Information

UN Number: Not always assigned, but considered hazardous for transport
Proper Shipping Name: Organic liquid, toxic, n.o.s.
Hazard Class: 6.1 (toxic substances)
Packing Group: III or as per latest regulatory norms
Special Precautions: Secure packaging, absorbent material for containment, avoid heating during transport, include full labeling and documentation

Regulatory Information

Lab Safety: Must follow occupational health guidelines, use safety data sheets for training
Environmental: Regulations point out toxic risk if released in large amounts, reportable quantities differ by location
Local Requirements: Local rules determine disposal and transport, always review local and national guidelines before large-scale handling or shipment
Notifications: Research labs using this agent should provide clear notification and training for every user, audit storage and waste controls