4-Chlorophenol CAS#106-48-9

CAS Number: 106-48-9
Chemical Formula: C6H5ClO
Synonyms:

4-chloro-1-hydroxybenzene
chlorophenols,solid
p-Chlorfenol

Appearance: White Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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4-Chlorophenol CAS#106-48-9

4-Chlorophenol appears as white crystals (pinkish to yellow when impure) with an unpleasant odor. It is soluble in water, ethanol, benzene, and ether. This substance is volatile with steam and exhibits strong irritancy. The maximum allowable concentration in workshop air is 1 mg/m³. The oral median lethal dose (LD₅₀) for rats is 261 mg/kg.

Property

Value


Melting Point	42-45°C
Boiling Point	220°C (lit.)
Density	1.306 g/mL at 25°C (lit.)
Vapor Density	4.43 (vs air)
Vapor Pressure	1 mmHg at 49.8°C
Refractive Index	1.5579
Flash Point	240°F
Storage Conditions	2-8°C
Solubility in Alcohol	50 mg/mL, Clear to very faintly turbid, Colorless to pale yellow-brown
pKa	9.18 at 25°C
Form	Crystalline solid
Color	White to light yellow
Odor	Phenolic
Odor Threshold	30 ppm
pH	5 at 20°C (in H₂O)
Water Solubility	2.7 g/100 mL at 20°C
Sensitivity	Air Sensitive
Dielectric Constant	9.5 at 54.0°C
Stability	Stable. Incompatible with acyl chlorides, acid anhydrides, oxidizing agents, and iron.

🧪 Primary Applications

Industry: Agriculture, Environmental forensics, Toxicology, Pharmaceuticals (small molecule synthesis).
Cosmetic Function: Antimicrobial agent.

🧩 Identifiers

CAS Number: 106-48-9
InChIKey: WXNZTHHGJRFXKQ-UHFFFAOYSA-N
SMILES: Oc1ccc(Cl)cc1
LogP: 2.5 at 35°C
Merck Index: 14, 2154
BRN: 507004

Product Application of 4-Chlorophenol CAS#106-48-9

Applications:

Microscopy Analysis: Used as a reagent in microscopic analysis.
Pharmaceuticals & Dyes: Serves as a key intermediate in the synthesis of pharmaceuticals and dyes.
Denatured Alcohol: Acts as a denaturing agent for ethanol.
Industrial Solvent: Functions as a selective solvent for refining mineral oils.

Detailed Industrial Uses:

Agrochemical Industry:
Primarily used for synthesizing Triadimefon (Powder Rust宁), Vinclozolin, fungicides, Falling Preventive agents, Propaphos, Phosalone, and other pesticides. It is also utilized in the production of agricultural bactericides and rodenticides.
Dye Industry:
Used in the manufacture of 1,4-Dihydroxyanthraquinone, 1,4-Diaminoanthraquinone, p-Aminophenol, and Hydroquinone.
Pharmaceutical Industry:
Employed in the carboxylation process to produce 5-Chloro-2-hydroxybenzoic acid sodium salt, and in the synthesis of Clofibrate and other medicinal compounds.
Other Applications:
Used as an antioxidant, specifically in the synthesis of BHA (Butylated Hydroxyanisole).

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