Description

3-Chlorophenoxyacetic acid (CAS No. 588-32-9) is a chlorinated phenoxy derivative of acetic acid with the molecular formula C₈H₇ClO₃. This white to off-white crystalline solid is widely utilized in agricultural and biochemical research due to its role as a synthetic auxin, mimicking plant growth hormones. With an IUPAC name of 2-(3-chlorophenoxy)acetic acid, it is a versatile compound for studying herbicide mechanisms, plant physiology, and cell elongation processes. High-purity grade (≥98%) ensures reliable performance in laboratory applications. Store in a cool, dry place away from light to maintain stability. Available in convenient quantities for research use.

Properties

• CAS Number: 588-32-9
• Complexity: 160
• IUPAC Name: 2-(3-chlorophenoxy)acetic acid
• InChI: InChI=1S/C8H7ClO3/c9-6-2-1-3-7(4-6)12-5-8(10)11/h1-4H,5H2,(H,10,11)
• InChI Key: XSBUXVWJQVTYLC-UHFFFAOYSA-N
• LogP: log Kow = 2.03
• Exact Mass: 186.0083718
• Molecular Formula: C8H7ClO3
• Molecular Weight: 186.59
• SMILES: C1=CC(=CC(=C1)Cl)OCC(=O)O
• Topological: 46.5
• Monoisotopic Mass: 186.0083718
• Physical Description: Solid; Off-white powder;
• Color/Form: Crystals from water
• Melting Point: 110 °C
• Solubility: Slightly soluble in chloroform. Soluble in ethanol and ether. Very soluble in benzene
• Vapor Pressure: 0.000318 [mmHg]
• Dissociation Constants: pKa = 3.07
• Synonyms: 3-CHLOROPHENOXYACETIC ACID, 2-(3-chlorophenoxy)acetic acid, m-Chlorophenoxyacetic acid, UNII-JXK525064M, HSDB 3943, EINECS 209-616-6, NSC 30115, NSC-30115, ACETIC ACID, 2-(3-CHLOROPHENOXY)-, DTXSID90207526, M-CHLOROPHENOXYACETIC ACID [HSDB], mChlorophenoxyacetic acid, Acetic acid, (mchlorophenoxy), Acetic acid, (3chlorophenoxy), DTXCID40130017, xsbuxvwjqvtylc-uhfffaoysa-n, 588-32-9, (3-chlorophenoxy)acetic acid, (3-Chloro-phenoxy)-acetic acid, Acetic acid, (3-chlorophenoxy)-, Acetic acid, (m-chlorophenoxy)-, MFCD00015850, JXK525064M, 3-Chlorophenoxyaceticacid, 3-chlorophenoxy acetic acid, (m-Chlorophenoxy)acetic acid, SCHEMBL523934, CHEMBL3247405, CHEBI:195178, ALBB-020981, NSC30115, SBB043647, STK326777, AKOS000101577, AB01185, CS-W002102, SY008336, TS-02615, DB-053277, NS00034025, ST50208942, EN300-17744, AG-690/13155067, Q27281731, Z57008935, JMV

Application

3-Chlorophenoxyacetic acid is primarily used as a plant growth regulator in agricultural research, mimicking natural auxins to study cell elongation and differentiation. It serves as a key intermediate in the synthesis of herbicides and selective weed control agents. Researchers also employ it in biochemical assays to investigate hormone signaling pathways in plants.

Safety and Hazards

GHS Hazard Statements

• H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
• H315 (11.4%): Causes skin irritation [Warning Skin corrosion/irritation]
• H318 (88.6%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
• H335 (11.4%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P354+P338, P317, P319, P321, P330, P332+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Acute Tox. 4 (100%)
• Skin Irrit. 2 (11.4%)
• Eye Dam. 1 (88.6%)
• STOT SE 3 (11.4%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.