2,3,4,6-tetrachlorophenol
C6H2Cl4O
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Identification
- CAS Number
- 58-90-2
- EC Number
- 200-402-8
- UN Number
- 2020
- Index Number
- 604-013-00-8
- PubChem CID
- 6028
Physical-chemical properties
- Molecular Formula
- C6H2Cl4O
- Molar Mass
- 231.90 g/mol
- IUPAC Name
- 2,3,4,6-tetrachlorophenol
Chemical Identifiers
- InChI
- InChI=1S/C6H2Cl4O/c7-2-1-3(8)6(11)5(10)4(2)9/h1,11H
- InChI Key
- VGVRPFIJEJYOFN-UHFFFAOYSA-N
Overview
2,3,4,6-tetrachlorophenol (CAS 58-90-2) is a chlorinated phenolic compound with significant biocidal properties and high environmental persistence. This highly chlorinated aromatic compound represents an important member of the chlorophenol family, characterized by four chlorine atoms positioned at the 2, 3, 4, and 6 positions of the phenol ring. With a molecular formula of C6H2Cl4O and molecular weight of 231.9 g/mol, 2,3,4,6-tetrachlorophenol exhibits distinct chemical properties that make it valuable for specific industrial applications while requiring careful handling protocols. The compound presents significant safety considerations, classified under multiple hazard categories including acute toxicity (Category 3), skin and eye irritation, and severe aquatic toxicity with both acute and chronic environmental effects. Its GHS06 and GHS09 pictogrammes reflect its toxic nature and environmental hazards, necessitating transport classification under ADR Class 6.1 for toxic substances. Unlike less chlorinated compounds such as phenylhydrazine, this tetrachlorinated derivative demonstrates enhanced stability and persistence in environmental conditions. Key applications include use as an intermediate in organic synthesis, particularly in the production of specialized agrochemicals and antimicrobial formulations. The compound serves as a building block for manufacturing more complex chlorinated organic compounds and finds application in wood preservation systems where its biocidal properties provide effective protection against microbial degradation. Industrial users also employ 2,3,4,6-tetrachlorophenol in specialized chemical synthesis processes requiring highly chlorinated phenolic starting materials, where its unique substitution pattern offers specific reactivity profiles not achievable with other chlorophenol isomers. OYSI maintains reliable supplies of 2,3,4,6-tetrachlorophenol for qualified industrial customers across Europe, ensuring consistent availability for legitimate chemical manufacturing applications.
Safety & Classification
Acute Tox. 3 *; 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 | 2,3,4,6-Tetrachlorphenol, fest, frei von TCDD |
| Marine Pollutant | No |
Frequently Asked Questions
What is 2,3,4,6-tetrachlorophenol?
2,3,4,6-tetrachlorophenol is a chlorinated phenolic compound with the molecular formula C6H2Cl4O and CAS number 58-90-2. This chemical substance has a molecular weight of 231.9 g/mol and belongs to the family of polychlorinated phenols. It is classified as a hazardous substance with acute toxicity, skin and eye irritation properties, and significant environmental toxicity to aquatic organisms.
What are the physicochemical properties of 2,3,4,6-tetrachlorophenol?
2,3,4,6-tetrachlorophenol is typically a solid crystalline substance at room temperature with a characteristic phenolic odor. As a chlorinated phenol, it exhibits limited water solubility but is soluble in organic solvents such as alcohols and ethers. The presence of four chlorine atoms significantly affects its physical properties, increasing its stability and reducing its volatility compared to non-chlorinated phenols.
What is 2,3,4,6-tetrachlorophenol used for?
2,3,4,6-tetrachlorophenol is primarily used as an intermediate in chemical synthesis and as a precursor for various industrial applications. It serves in the production of herbicides, fungicides, and other pesticide formulations. Additionally, it finds applications in the manufacture of specialized chemicals, research purposes, and as a building block for more complex chlorinated organic compounds in pharmaceutical and agrochemical industries.
How to handle 2,3,4,6-tetrachlorophenol safely?
2,3,4,6-tetrachlorophenol requires careful handling due to its Acute Tox. 3 classification and irritant properties. Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Ensure adequate ventilation in work areas and avoid direct skin contact or inhalation. Handle in a well-ventilated area or under fume hood, and wash hands thoroughly after use.
How to store 2,3,4,6-tetrachlorophenol correctly?
2,3,4,6-tetrachlorophenol should be stored in a cool, dry, well-ventilated area away from incompatible materials. Keep containers tightly closed and protected from moisture and direct sunlight. Store away from oxidizing agents, strong bases, and heat sources. Ensure storage areas are equipped with appropriate containment measures and access is restricted to trained personnel only.
What to do in case of contact with 2,3,4,6-tetrachlorophenol?
In case of skin contact with 2,3,4,6-tetrachlorophenol, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. For eye contact, rinse immediately with clean water for 15 minutes while holding eyelids open. If inhaled, move to fresh air immediately. Seek medical attention if irritation persists or symptoms develop.
How to dispose of 2,3,4,6-tetrachlorophenol properly?
2,3,4,6-tetrachlorophenol must be disposed of as hazardous waste in accordance with local, national, and international regulations. Do not discharge into drains, waterways, or the environment due to its high aquatic toxicity classification. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Follow all applicable waste management regulations and maintain proper documentation of disposal activities.
How to transport 2,3,4,6-tetrachlorophenol?
2,3,4,6-tetrachlorophenol is classified under ADR Class 6.1 (Toxic substances), Packing Group III for transportation purposes. It must be packaged in UN-approved containers with appropriate hazard labels and documentation. Transport should comply with dangerous goods regulations, including proper vehicle marking, driver training, and emergency response procedures. Ensure carriers are qualified for hazardous materials transportation.
Is 2,3,4,6-tetrachlorophenol subject to particular regulations?
2,3,4,6-tetrachlorophenol is subject to various chemical regulations including REACH registration requirements in Europe and CLP classification obligations. Its high environmental toxicity may trigger additional reporting requirements under water protection legislation. Users must comply with occupational health and safety regulations due to its toxic and irritant properties, and environmental permits may be required for industrial use.
Where to buy 2,3,4,6-tetrachlorophenol in Europe?
2,3,4,6-tetrachlorophenol is available through OYSI, a European distributor of chemical products specializing in technical chemicals. OYSI provides this substance to qualified industrial customers with proper documentation and regulatory compliance support. As a controlled chemical substance, purchase requires appropriate business justification and compliance with applicable regulations regarding toxic substances.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.