2-(2,4,5-trichlorophenoxy)propanoic acid
C9H7Cl3O3
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Identification
- CAS Number
- 93-72-1
- EC Number
- 202-271-2
- UN Number
- 3077
- Index Number
- 607-047-00-1
- PubChem CID
- 7158
Physical-chemical properties
- Molecular Formula
- C9H7Cl3O3
- Molar Mass
- 269.50 g/mol
- IUPAC Name
- 2-(2,4,5-trichlorophenoxy)propanoic acid
Chemical Identifiers
- InChI
- InChI=1S/C9H7Cl3O3/c1-4(9(13)14)15-8-3-6(11)5(10)2-7(8)12/h2-4H,1H3,(H,13,14)
- InChI Key
- ZLSWBLPERHFHIS-UHFFFAOYSA-N
Overview
2-(2,4,5-trichlorophenoxy)propanoic acid (CAS 93-72-1) is a chlorinated phenoxyalkanoic acid derivative with selective herbicidal properties and systemic biological activity. This organochlorine compound, with the molecular formula C9H7Cl3O3 and a molecular weight of 269.5 g/mol, belongs to the phenoxy herbicide family and has played a significant role in agricultural chemistry. The molecule features a trichlorophenyl ring system connected to a propionic acid moiety through an ether linkage, giving it both lipophilic and hydrophilic characteristics that influence its biological activity and environmental behavior. From a safety perspective, 2-(2,4,5-trichlorophenoxy)propanoic acid is classified under multiple hazard categories including Acute Toxicity Category 4, Skin Irritation Category 2, and both Acute and Chronic Aquatic Toxicity Category 1. The compound requires careful handling protocols and carries GHS07 and GHS09 pictograms with a "Warning" signal word. Its classification as ADR Class 9 (miscellaneous dangerous goods) reflects the need for specialized transport considerations due to its environmental persistence and potential ecological impact. Industrial applications of this compound have historically centered around selective herbicidal formulations for broadleaf weed control, particularly in cereal crops and turf management. The compound's systemic action mechanism makes it effective for controlling deep-rooted perennial weeds. Additionally, it serves as an important chemical intermediate in the synthesis of related phenoxy compounds, sharing structural similarities with other halogenated aromatics like 1,2,4-trichlorobenzene in terms of chlorination patterns. OYSI maintains availability of 2-(2,4,5-trichlorophenoxy)propanoic acid for qualified industrial customers requiring this specialized chemical intermediate, ensuring compliance with all applicable European regulations and safety standards.
Safety & Classification
Acute Tox. 4 *; Skin 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:
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 | 3077 |
| ADR Class | 9 |
| Packing Group | III |
| Tunnel Code | - |
| Proper Shipping Name | Fenoprop |
| Marine Pollutant | No |
Frequently Asked Questions
What is 2-(2,4,5-trichlorophenoxy)propanoic acid?
2-(2,4,5-trichlorophenoxy)propanoic acid is a chlorinated phenoxy herbicide with the molecular formula C9H7Cl3O3 and CAS number 93-72-1. This synthetic organic compound has a molecular weight of 269.5 g/mol and belongs to the phenoxyacetic acid family. It is classified as moderately toxic with skin irritant properties and poses significant risks to aquatic environments. The substance requires careful handling due to its toxicological profile and environmental impact potential.
What are the physicochemical properties of 2-(2,4,5-trichlorophenoxy)propanoic acid?
2-(2,4,5-trichlorophenoxy)propanoic acid is typically a white to off-white crystalline solid at room temperature. The compound has limited water solubility due to its chlorinated aromatic structure but dissolves well in organic solvents such as alcohols and acetone. It exhibits characteristic phenolic odor and has a molecular weight of 269.5 g/mol. The presence of three chlorine atoms and the carboxylic acid group significantly influence its chemical stability and reactivity profile.
What is 2-(2,4,5-trichlorophenoxy)propanoic acid used for?
2-(2,4,5-trichlorophenoxy)propanoic acid is primarily used as an active ingredient in herbicide formulations for selective weed control. It serves as an intermediate in the synthesis of agricultural chemicals and plant growth regulators. The compound is utilized in research applications for studying plant hormone mechanisms and auxin-related biological processes. Industrial applications may include its use in specialized chemical synthesis processes requiring chlorinated phenoxy compounds.
How to handle 2-(2,4,5-trichlorophenoxy)propanoic acid safely?
2-(2,4,5-trichlorophenoxy)propanoic acid 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 to prevent inhalation exposure. Avoid direct skin contact as the substance is classified as a skin irritant. Use proper handling techniques to prevent dust generation and ensure emergency eyewash and shower facilities are readily accessible in the work area.
How to store 2-(2,4,5-trichlorophenoxy)propanoic acid correctly?
2-(2,4,5-trichlorophenoxy)propanoic acid should be stored in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep containers tightly sealed to prevent moisture absorption and contamination. Store separately from strong oxidizing agents, alkalis, and incompatible materials. The storage area should be equipped with appropriate spill containment measures and maintained at stable temperatures. Ensure proper labeling and inventory management in accordance with chemical storage regulations.
What to do in case of contact with 2-(2,4,5-trichlorophenoxy)propanoic acid?
Immediate skin contact with 2-(2,4,5-trichlorophenoxy)propanoic acid requires thorough washing with plenty of soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for 15-20 minutes and seek medical attention. If inhaled, move the person to fresh air and monitor breathing. In case of ingestion, do not induce vomiting and seek immediate medical attention. Remove contaminated clothing and wash before reuse. Always consult safety data sheets for specific emergency procedures.
How to dispose of 2-(2,4,5-trichlorophenoxy)propanoic acid appropriately?
2-(2,4,5-trichlorophenoxy)propanoic acid must be disposed of as hazardous waste through licensed waste management companies in accordance with local and EU regulations. The substance cannot be discharged into sewers or waterways due to its aquatic toxicity classification. Incineration at high temperatures in authorized facilities is typically the preferred disposal method. Empty containers should be triple-rinsed and disposed of according to hazardous waste protocols. Maintain proper documentation for waste tracking and regulatory compliance.
How to transport 2-(2,4,5-trichlorophenoxy)propanoic acid?
2-(2,4,5-trichlorophenoxy)propanoic acid is classified as Class 9 dangerous goods (miscellaneous dangerous substances) under ADR regulations with Packing Group III. Transport requires appropriate UN specification packaging and proper labeling with Class 9 hazard labels. Vehicles must carry appropriate emergency equipment and documentation including transport documents and safety data sheets. Drivers require ADR training certification for transporting dangerous goods. Ensure compliance with quantity limitations and segregation requirements during transport operations.
Is 2-(2,4,5-trichlorophenoxy)propanoic acid subject to specific regulations?
2-(2,4,5-trichlorophenoxy)propanoic acid is subject to REACH regulation requiring registration for manufacture or import above one tonne annually. The substance is classified under CLP regulation with specific hazard categories including acute toxicity, skin irritation, and aquatic toxicity. It is not currently listed as a Substance of Very High Concern (SVHC). Users must comply with occupational exposure limits, environmental discharge restrictions, and proper risk assessment requirements under relevant EU chemical legislation.
Where to buy 2-(2,4,5-trichlorophenoxy)propanoic acid in Europe?
2-(2,4,5-trichlorophenoxy)propanoic acid is available through OYSI, a specialized European distributor of technical chemicals and intermediates. OYSI provides reliable supply chain management and technical support for industrial customers across Europe. The company ensures proper documentation, regulatory compliance, and quality standards for chemical distribution. Contact OYSI directly for availability, specifications, and delivery options tailored to your specific requirements and applications in the European market.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.