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Product Name: 3,4-Dichlorophenylacetic Acid
Chemical Formula: C8H6Cl2O2
CAS Number: 1878-66-6
EC Number: 217-546-6
Synonyms: 2-(3,4-Dichlorophenyl)acetic acid
Recommended Use: Laboratory research, chemical synthesis, agrochemical precursor
Supplier Details: Manufacturer contact details on product label
Emergency Telephone: National emergency contact listed on SDS package
GHS Classification: Acute Toxicity (Oral, Category 4); Skin Irritant (Category 2); Environmental Hazard (Aquatic Chronic, Category 3)
Signal Word: Warning
Hazard Statements: Harmful if swallowed; causes skin irritation; may cause an allergic skin reaction; harmful to aquatic life with long lasting effects
Precautionary Statements: Avoid breathing dust; wash thoroughly after handling; use personal protective equipment as required; if on skin: wash with plenty of water
Pictograms: Exclamation mark, Environment
Chemical Name: 3,4-Dichlorophenylacetic Acid
Purity: ≥98%
Impurities: Unspecified traces of related chlorinated organic compounds
Molecular Weight: 205.04 g/mol
Other Components: Not present in relevant concentrations
Inhalation: Get person to fresh air, keep at rest, seek medical attention if breathing becomes difficult
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, get medical advice if irritation persists
Eye Contact: Rinse immediately with plenty of water for at least 15 minutes, lift eyelids for thorough cleansing, seek ophthalmologist if symptoms continue
Ingestion: Rinse mouth, do not induce vomiting, get medical attention if feeling unwell
Most Important Symptoms: Nausea, dizziness, skin redness, irritation, possible allergic reaction
Notes for Doctor: Treat symptoms, monitor for respiratory complications
Suitable Extinguishing Media: Water spray, carbon dioxide, dry chemical powder, foam
Hazards from Combustion: Toxic fumes such as hydrogen chloride, carbon monoxide, and carbon dioxide
Special Protective Equipment: Wear positive pressure self-contained breathing apparatus, chemical resistant protective clothing
Specific Hazards: Releases dense, irritating fumes if combusted; use caution in confined spaces
Advice for Firefighters: Approach from upwind side, prevent run-off to water bodies
Personal Precautions: Avoid dust formation, ventilate area, use protective equipment (gloves, goggles, mask)
Environmental Precautions: Prevent entry into sewers, soil, waterways; report to proper authorities if large spill occurs
Cleanup Methods: Collect with inert absorbent material, shovel into suitable closed containers, avoid dust, dispose according to local requirements
Decontamination: Ventilate area after cleanup, wash affected surfaces with detergent and water
Safe Handling: Work under local exhaust ventilation, avoid inhaling dust, avoid contact with skin and eyes, use minimum quantities
Hygiene Practices: Wash hands after handling, do not eat, drink, or smoke during use
Storage Conditions: Keep in original tightly closed container, store in a cool, dry, well-ventilated environment, keep away from incompatible materials (strong oxidizing agents, strong bases)
Segregation: Store away from foodstuffs, animal feed, acids, oxidizers
Occupational Exposure Limits: No specific limit set; keep airborne dust below general nuisance levels (10 mg/m³)
Engineering Controls: Local exhaust ventilation, eye wash stations, emergency showers
Personal Protective Equipment: Safety goggles, chemical-resistant gloves, lab coat, suitable respiratory protection for dust
Environmental Controls: Collect and dispose of dust; avoid emissions to air/water/soil
Appearance: White to off-white crystalline powder
Odor: Faint aromatic
pH: Not available; forms weakly acidic solutions
Melting Point: 170–173°C
Boiling Point: Decomposes
Flash Point: Not flammable under normal conditions
Solubility: Slightly soluble in water, soluble in organic solvents such as ethanol and acetone
Vapor Pressure: Negligible at ambient temperature
Partition Coefficient (log Kow): Estimated 2.5–3.0
Density: ~1.55 g/cm³
Auto-Ignition Temperature: Data not available
Evaporation Rate: Not applicable
Chemical Stability: Stable under normal temperatures and storage conditions
Conditions to Avoid: Excessive heat, moisture, exposure to strong light
Materials to Avoid: Oxidizing agents, strong bases, strong acids
Hazardous Decomposition Products: Hydrogen chloride, chlorinated organic vapors, carbon oxides on heating
Hazardous Reactions: No hazardous polymerization observed
Acute Toxicity: Oral LD50 in rats around 400–900 mg/kg
Inhalation: May cause respiratory irritation; inhalation data not fully established
Dermal: May cause skin irritation, possible allergic response
Eye Contact: Causes irritation, redness, tearing
Chronic Exposure: Prolonged contact may cause dermatitis or sensitization
Carcinogenicity: Not listed by IARC, OSHA, or NTP
Mutagenicity: Data not sufficient for evaluation
Other Potential Effects: No evidence of reproductive toxicity available
Toxicity to Aquatic Life: Harmful with long-lasting effects; no detailed LC50/EC50 available
Biodegradability: Not readily biodegradable under typical environmental conditions
Bioaccumulative Potential: Potential for bioaccumulation, particularly in aquatic organisms (log Kow >2)
Mobility in Soil: Moderate; may bind to soil particles
Other Adverse Effects: Avoid release to natural waters, toxic to fish and aquatic plants
Methods of Disposal: Incinerate under controlled conditions or dispose as hazardous chemical waste according to local, regional, or national regulations
Contaminated Packaging: Rinse containers, offer for recycling or disposal as chemical waste
Other Precautions: Do not discharge into drains, surface water, or soil
UN Number: Not regulated for transport according to current international regulations (IATA, IMDG, DOT)
Transport Hazard Class: Not classified
Packing Group: Not assigned
Label Required: None required under transport regulations
Special Precautions: Protect from moisture and physical damage during transport
TSCA Status: Listed in US Toxic Substances Control Act Inventory
REACH Status: Pre-registered or exempt under Annex IV/V in EU
Other National Inventories: Present in Canadian DOMESTIC, Australian AICS, Japanese ENCS lists
SARA Title III: Not subject to reporting requirements
Labeling: Requires standard chemical hazard labeling in most jurisdictions
Other Regulations: Subject to workplace safety, environmental protection, and chemical handling regulations specific to country or region
