2,4,5-trichlorophenol
C6H3Cl3O
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Identification
- CAS Number
- 95-95-4
- EC Number
- 202-467-8
- UN Number
- 2020
- Index Number
- 604-017-00-X
- PubChem CID
- 7271
Physical-chemical properties
- Molecular Formula
- C6H3Cl3O
- Molar Mass
- 197.40 g/mol
- IUPAC Name
- 2,4,5-trichlorophenol
Chemical Identifiers
- InChI
- InChI=1S/C6H3Cl3O/c7-3-1-5(9)6(10)2-4(3)8/h1-2,10H
- InChI Key
- LHJGJYXLEPZJPM-UHFFFAOYSA-N
Overview
2,4,5-Trichlorophenol (CAS 95-95-4) is a chlorinated phenolic compound with antimicrobial properties and moderate environmental persistence. This organochlorine compound represents an important member of the chlorophenol family, characterized by three chlorine substituents positioned at the 2, 4, and 5 positions on the benzene ring. With its molecular formula C6H3Cl3O and molecular weight of 197.4 g/mol, 2,4,5-trichlorophenol exhibits distinct physicochemical properties that make it valuable for specific industrial applications while requiring careful handling due to its toxicological profile. The compound presents moderate acute toxicity (Acute Tox. 4) and causes skin and eye irritation, necessitating appropriate personal protective equipment during handling. Of particular environmental concern is its classification as both acutely and chronically hazardous to aquatic life (Aquatic Acute 1; Aquatic Chronic 1), requiring stringent containment measures to prevent environmental release. The substance falls under ADR Class 6.1 for transportation, reflecting its toxic nature. Primary industrial applications include its use as a chemical intermediate in pharmaceutical synthesis, as a preservative in certain industrial formulations, and as a precursor for more complex chlorinated aromatic compounds. The antimicrobial properties of 2,4,5-trichlorophenol also find application in specialized biocide formulations. In the broader context of chlorinated aromatics, this compound shares certain applications with substances like 2,3-dichloronaphthalene-1,4-dione, though each maintains distinct properties and specific use profiles. OYSI provides 2,4,5-trichlorophenol to qualified industrial customers across Europe, ensuring full regulatory compliance and proper documentation for safe handling and application in technical processes.
Safety & Classification
Acute Tox. 4 *; Skin Irrit. 2; Eye Irrit. 2; Aquatic Acute 1; Aquatic Chronic 1
GHS Pictograms
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).
First Aid Measures
Skin Contact
Measures if substance contacts the skin
First Aid Actions
- +P302IF ON SKIN:
- +P352Wash with plenty of water.
- +P361Take off immediately all contaminated clothing.
- +P313Get medical advice/attention.
Related hazard statements:
Eye Contact
Measures if substance gets into the eyes
First Aid Actions
- +P305IF IN EYES:
- +P351Rinse cautiously with water for several minutes.
- +P338Remove contact lenses, if present and easy to do. Continue rinsing.
- +P313Get medical advice/attention.
Related hazard statements:
Ingestion
Measures if substance is accidentally swallowed
First Aid Actions
- +P301IF SWALLOWED:
- +P330Rinse mouth.
- +P331Do NOT induce vomiting.
- +P310Immediately call a POISON CENTER/doctor.
Related hazard statements:
General Measures
Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)
First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.
Transport (ADR)
| UN Number | 2020 |
| ADR Class | 6.1 |
| Packing Group | III |
| Tunnel Code | E |
| Proper Shipping Name | 2,4,5-Trichlorphenol, fest, frei von TCDD |
| Marine Pollutant | No |
Frequently Asked Questions
What is 2,4,5-trichlorophenol?
2,4,5-trichlorophenol is an organochlorine compound with the molecular formula C6H3Cl3O and CAS number 95-95-4. This chemical belongs to the chlorophenol family, featuring three chlorine atoms attached to a phenol ring at positions 2, 4, and 5. With a molecular weight of 197.4 g/mol, it is classified as acutely toxic and harmful to aquatic environments, requiring careful handling in industrial applications.
What are the physicochemical properties of 2,4,5-trichlorophenol?
2,4,5-trichlorophenol is a crystalline solid at room temperature, typically appearing as white to light yellow crystals or powder. It has a characteristic phenolic odor and is moderately soluble in water, with higher solubility in organic solvents like alcohols and ethers. The compound has a relatively high melting point due to its chlorinated aromatic structure and exhibits stability under normal storage conditions.
What is 2,4,5-trichlorophenol used for?
2,4,5-trichlorophenol serves primarily as an intermediate in chemical synthesis and manufacturing processes. It is used in the production of pesticides, herbicides, and other agricultural chemicals. Additionally, it finds applications in the synthesis of pharmaceuticals, dyes, and wood preservatives. The compound also serves as a precursor for various chlorinated organic compounds in specialized industrial applications.
How to handle 2,4,5-trichlorophenol safely?
2,4,5-trichlorophenol requires careful handling with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or under fume extraction systems to minimize inhalation exposure. Avoid skin and eye contact, and ensure emergency eyewash stations and safety showers are accessible. Handle containers carefully to prevent spills and dust generation.
How to store 2,4,5-trichlorophenol correctly?
2,4,5-trichlorophenol should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers upright and secure to prevent spillage. Store separately from incompatible materials such as strong oxidizing agents and bases. Ensure storage areas are equipped with appropriate spill containment measures and maintain temperatures within recommended ranges to preserve product stability.
What to do in case of contact with 2,4,5-trichlorophenol?
2,4,5-trichlorophenol contact requires immediate action: for skin contact, remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. In case of eye contact, flush immediately with clean water for 15 minutes while holding eyelids open. If inhaled, move to fresh air immediately. For ingestion, do not induce vomiting and seek immediate medical attention. Always consult emergency services if symptoms persist.
How to dispose of 2,4,5-trichlorophenol appropriately?
2,4,5-trichlorophenol disposal must comply with local and national hazardous waste regulations due to its toxic and environmentally harmful properties. The substance should be collected in appropriate containers and disposed of through licensed hazardous waste disposal facilities. Do not discharge to sewers, waterways, or soil. Incineration at high temperatures in specialized facilities is typically the preferred disposal method for chlorinated phenolic compounds.
How to transport 2,4,5-trichlorophenol?
2,4,5-trichlorophenol is classified under ADR as Class 6.1 (toxic substances), Packing Group III, requiring specific transport regulations. Packages must be properly labeled with appropriate hazard pictogrammes and documentation. Vehicles must carry emergency equipment and drivers need hazardous materials training certification. Ensure containers are secure, properly sealed, and protected from damage during transit while following routing restrictions for toxic materials.
Is 2,4,5-trichlorophenol subject to specific regulations?
2,4,5-trichlorophenol is subject to various European regulations including REACH registration requirements and CLP classification obligations. It must be labeled with Warning signal word and appropriate GHS pictogrammes (GHS07, GHS09). The substance requires safety data sheets and may be subject to use restrictions or authorization requirements. Companies handling this chemical must comply with occupational exposure limits and environmental discharge regulations in their respective countries.
Where to buy 2,4,5-trichlorophenol in Europe?
2,4,5-trichlorophenol is available through OYSI, a European chemical distributor specializing in technical and industrial chemicals. OYSI provides regulatory compliant products with proper documentation, safety data sheets, and technical support across European markets. As a specialized distributor, OYSI ensures product quality and regulatory compliance for professional and industrial customers requiring this chlorinated phenolic compound for their manufacturing processes.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.