2-(4-chloro-2-methylphenoxy)acetic acid
C9H9ClO3
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Identification
- CAS Number
- 94-74-6
- EC Number
- 202-360-6
- UN Number
- 3077
- Index Number
- 607-051-00-3
- PubChem CID
- 7204
Physical-chemical properties
- Molecular Formula
- C9H9ClO3
- Molar Mass
- 200.62 g/mol
- IUPAC Name
- 2-(4-chloro-2-methylphenoxy)acetic acid
Chemical Identifiers
- InChI
- InChI=1S/C9H9ClO3/c1-6-4-7(10)2-3-8(6)13-5-9(11)12/h2-4H,5H2,1H3,(H,11,12)
- InChI Key
- WHKUVVPPKQRRBV-UHFFFAOYSA-N
Overview
2-(4-chloro-2-methylphenoxy)acetic acid (CAS 94-74-6) is a chlorinated phenoxyacetic acid derivative with herbicidal properties and selective plant growth regulation capabilities. This synthetic organic compound, also known by its IUPAC designation, belongs to the phenoxyacetic acid family of chemicals widely utilized in agricultural and industrial applications. With a molecular formula of C9H9ClO3 and molecular weight of 200.62 g/mol, this substance exhibits characteristic properties of chlorinated aromatic compounds combined with carboxylic acid functionality. The compound presents significant safety considerations requiring careful handling protocols. Classified under multiple hazard categories including Acute Toxicity 4, Skin Irritation 2, and Eye Damage 1, it carries the signal word "Danger" and requires appropriate GHS pictogrammes GHS07, GHS05, and GHS09. Its aquatic toxicity classification (Aquatic Acute 1; Aquatic Chronic 1) indicates potential environmental impact, necessitating proper containment and disposal procedures. Transportation falls under ADR Class 9 miscellaneous dangerous substances. Industrial applications primarily center on plant growth regulation and selective herbicidal formulations, where its phenoxyacetic acid structure provides targeted biological activity. The compound also serves as a chemical intermediate in pharmaceutical synthesis and specialty chemical manufacturing. Related substances in this chemical family include 2-(4-chloro-2-methylphenoxy)propanoic acid, which shares similar structural characteristics and application profiles. Due to its specialized nature and regulatory requirements, this compound requires expert handling and compliance with environmental protection standards. OYSI provides this technical chemical to qualified industrial customers with comprehensive safety documentation and regulatory support.
Safety & Classification
Acute Tox. 4 *; Skin Irrit. 2; Eye Dam. 1; 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 | 3077 |
| ADR Class | 9 |
| Packing Group | III |
| Tunnel Code | - |
| Proper Shipping Name | MCPA (ISO) |
| Marine Pollutant | No |
Frequently Asked Questions
What is 2-(4-chloro-2-methylphenoxy)acetic acid?
2-(4-chloro-2-methylphenoxy)acetic acid is an organochlorine compound with the molecular formula C9H9ClO3 and CAS number 94-74-6. This synthetic chemical belongs to the phenoxyacetic acid family and has a molecular weight of 200.62 g/mol. It is classified as a hazardous substance with multiple safety concerns including acute toxicity, skin irritation, eye damage, and aquatic toxicity, requiring careful handling in industrial applications.
What are the physicochemical properties of 2-(4-chloro-2-methylphenoxy)acetic acid?
2-(4-chloro-2-methylphenoxy)acetic acid is typically a white to off-white crystalline solid at room temperature. As an organic acid containing both aromatic and carboxylic acid functional groups, it exhibits moderate polarity. The compound is generally soluble in organic solvents and shows limited water solubility. Its molecular structure includes a chlorinated methylphenoxy group attached to an acetic acid moiety, contributing to its chemical stability and reactivity profile.
What is 2-(4-chloro-2-methylphenoxy)acetic acid used for?
2-(4-chloro-2-methylphenoxy)acetic acid is primarily used in agricultural applications as an active ingredient in herbicide formulations. It serves as an intermediate in the synthesis of plant growth regulators and selective herbicides. The compound is also utilized in research and development activities within the agrochemical industry. Its phenoxyacetic acid structure makes it effective in controlling broadleaf weeds while being selective for certain crop types.
How to handle 2-(4-chloro-2-methylphenoxy)acetic acid safely?
Safe handling of 2-(4-chloro-2-methylphenoxy)acetic acid requires 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. Avoid direct skin and eye contact, and prevent inhalation of dust or vapors. Use non-sparking tools and equipment. Wash hands thoroughly after handling and before eating or drinking. Emergency shower and eyewash stations should be readily accessible.
How to store 2-(4-chloro-2-methylphenoxy)acetic acid correctly?
2-(4-chloro-2-methylphenoxy)acetic acid should be stored in tightly sealed, original containers in a cool, dry, and well-ventilated area away from direct sunlight and heat sources. Keep containers upright and protect from physical damage. Store away from incompatible materials such as strong bases, oxidizing agents, and reducing agents. Maintain storage temperature within recommended ranges and ensure proper labeling. Access should be restricted to authorized personnel only, with appropriate spill containment measures in place.
What to do in case of contact with 2-(4-chloro-2-methylphenoxy)acetic acid?
In case of skin contact with 2-(4-chloro-2-methylphenoxy)acetic acid, immediately remove contaminated clothing and wash the affected area with plenty of water for at least 15 minutes. For eye contact, rinse immediately with water for at least 15 minutes and seek medical attention promptly due to the eye damage hazard. If inhaled, move the person to fresh air. In case of ingestion, do not induce vomiting and seek immediate medical attention. Always consult a physician if symptoms develop.
How to dispose of 2-(4-chloro-2-methylphenoxy)acetic acid appropriately?
2-(4-chloro-2-methylphenoxy)acetic acid must be disposed of through licensed hazardous waste disposal facilities in accordance with local, national, and EU regulations. The compound cannot be disposed of in regular waste streams due to its toxicity and environmental impact. Containers should be triple-rinsed and the rinsate treated as hazardous waste. Disposal methods may include high-temperature incineration at approved facilities. Always consult current waste disposal regulations and work with certified waste management companies.
How to transport 2-(4-chloro-2-methylphenoxy)acetic acid?
2-(4-chloro-2-methylphenoxy)acetic acid is classified as ADR Class 9 (Miscellaneous dangerous goods), Packing Group III for transportation purposes. This classification indicates it requires specific packaging, marking, and documentation for road transport within Europe. Packages must be properly labeled with appropriate hazard markings and transported according to ADR regulations. Drivers require appropriate training and vehicles must carry necessary safety equipment. Transport documents must accompany shipments with proper dangerous goods declarations.
Is 2-(4-chloro-2-methylphenoxy)acetic acid subject to specific regulations?
2-(4-chloro-2-methylphenoxy)acetic acid is subject to European REACH regulation requiring registration for manufacturing or importing above certain tonnage thresholds. It is not currently listed as a Substance of Very High Concern (SVHC). The compound falls under CLP regulation for classification, labeling, and packaging requirements. Additional restrictions may apply for specific uses, particularly in agricultural applications where it may be regulated under pesticide legislation. Users must comply with occupational exposure limits and environmental protection requirements.
Where to buy 2-(4-chloro-2-methylphenoxy)acetic acid in Europe?
2-(4-chloro-2-methylphenoxy)acetic acid is available through OYSI, a specialized European distributor of technical chemicals and intermediates. OYSI provides this compound to industrial customers, research institutions, and chemical manufacturers across Europe. As a professional chemical distributor, OYSI ensures proper documentation, regulatory compliance, and technical support for customers requiring this specialized chemical intermediate. Contact OYSI directly for availability, technical specifications, and regulatory documentation specific to your application requirements.
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2-(4-chloro-2-methylphenoxy)acetic acid is a dangerous good. We support you with labeling, packaging, and transport documentation.
Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.