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 phenoxyacetic acid derivative with herbicidal properties and moderate toxicity characteristics. This organochlorine compound, with the molecular formula C9H7Cl3O3 and molecular weight of 269.5 g/mol, belongs to the phenoxy herbicide family that has been extensively used in agricultural and industrial applications. The substance features a propanoic acid backbone linked to a highly chlorinated phenol ring, giving it distinctive chemical stability and biological activity. Its structural similarity to naturally occurring plant hormones allows it to interfere with plant growth processes, making it effective as a selective herbicide. From a safety perspective, 2-(2,4,5-trichlorophenoxy)propanoic acid is classified under multiple hazard categories including Acute Toxicity Category 4, Skin Irritant Category 2, and presents significant aquatic toxicity concerns with both acute and chronic environmental hazard classifications. The substance carries GHS07 and GHS09 pictograms with a "Warning" signal word, indicating moderate health risks and serious environmental hazards. Transport regulations classify it as ADR Class 9 (miscellaneous dangerous substances), requiring appropriate handling precautions during shipping and storage. Industrial applications primarily focus on herbicide formulations for broadleaf weed control in agricultural settings, brush control along rights-of-way, and vegetation management in industrial areas. The compound is sometimes used in research applications studying plant growth regulation and as an intermediate in the synthesis of related chlorinated aromatic compounds, similar to how 1,2,4-trichlorobenzene serves as a precursor in various chemical manufacturing processes. OYSI maintains reliable supply chains for 2-(2,4,5-trichlorophenoxy)propanoic acid to support our European industrial customers' specialized chemical requirements.
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 phenoxyacetic acid herbicide with the molecular formula C9H7Cl3O3 and CAS number 93-72-1. This compound has a molecular weight of 269.5 g/mol and belongs to the phenoxy herbicide family. It is classified as a hazardous substance with acute toxicity, skin irritation, and aquatic toxicity properties, requiring careful handling and appropriate safety measures during use.
What are the physicochemical properties of 2-(2,4,5-trichlorophenoxy)propanoic acid?
2-(2,4,5-trichlorophenoxy)propanoic acid is typically a solid crystalline compound at room temperature with a white to off-white appearance. The substance has limited water solubility due to its chlorinated aromatic structure but shows better solubility in organic solvents. Its molecular structure contains three chlorine atoms attached to a phenoxy ring system, contributing to its stability and herbicidal properties. The compound may have a characteristic chemical odor.
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 agricultural and horticultural applications. The compound effectively controls broadleaf weeds while being selective for certain crop types. It may also serve as an intermediate in the synthesis of other agrochemical products or as a research chemical in plant physiology studies. Industrial applications include formulation into commercial herbicide products for professional use.
How to handle 2-(2,4,5-trichlorophenoxy)propanoic acid safely?
2-(2,4,5-trichlorophenoxy)propanoic acid must be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing to prevent skin and eye contact. Work in well-ventilated areas or use local exhaust ventilation to minimize inhalation exposure. Avoid generating dust during handling and use appropriate tools for measuring and transferring. Follow good industrial hygiene practices including washing hands thoroughly after handling and changing contaminated clothing immediately.
How to store 2-(2,4,5-trichlorophenoxy)propanoic acid correctly?
2-(2,4,5-trichlorophenoxy)propanoic acid should be stored in tightly sealed original containers in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep the substance away from incompatible materials such as strong bases, oxidizing agents, and reactive metals. Store in a designated chemical storage area with appropriate spill containment measures. Maintain storage temperatures within recommended ranges and ensure containers are properly labeled with hazard information.
What to do in case of contact with 2-(2,4,5-trichlorophenoxy)propanoic acid?
Skin contact with 2-(2,4,5-trichlorophenoxy)propanoic acid requires immediate removal of contaminated clothing and thorough washing of affected areas with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for 15 minutes while holding eyelids open. If inhaled, move the person to fresh air and seek medical attention if breathing difficulties occur. In case of ingestion, do not induce vomiting and seek immediate medical attention.
How to dispose of 2-(2,4,5-trichlorophenoxy)propanoic acid appropriately?
2-(2,4,5-trichlorophenoxy)propanoic acid must be disposed of according to local, national, and European waste regulations as hazardous chemical waste. The substance cannot be disposed of in regular waste streams due to its toxicity and environmental impact. Contact licensed hazardous waste disposal companies for proper collection and treatment. Containers must be completely emptied and treated as contaminated packaging requiring special disposal procedures. Maintain disposal records as required by regulations.
How to transport 2-(2,4,5-trichlorophenoxy)propanoic acid?
2-(2,4,5-trichlorophenoxy)propanoic acid is classified as ADR Class 9 (Miscellaneous dangerous goods), Packing Group III for transportation purposes. The substance must be packaged in UN-approved containers with appropriate hazard labels and documentation. Transport vehicles require proper placarding and drivers need ADR certification. Shipping documents must include proper shipping names, hazard class, and emergency contact information. Follow international dangerous goods regulations for air and sea transport.
Is 2-(2,4,5-trichlorophenoxy)propanoic acid subject to specific regulations?
2-(2,4,5-trichlorophenoxy)propanoic acid is subject to European REACH regulation requiring registration for manufacture and import above certain tonnages. The substance falls under CLP regulation for classification and labeling of hazardous chemicals. It is not currently listed as a Substance of Very High Concern (SVHC). Pesticide-related uses may require additional authorization under plant protection product regulations. Users must comply with occupational health and safety directives and environmental protection requirements.
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 serving industrial and research customers. OYSI provides quality chemical products with proper documentation, safety data sheets, and regulatory compliance support. Professional customers can contact OYSI directly for availability, specifications, and delivery options across European markets. The company ensures proper packaging, labeling, and transportation according to applicable regulations for hazardous chemicals.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.