Description

5-Ethyl-1,3-Benzenediol is a substituted dihydroxybenzene derivative, also known as 5-Ethylresorcinol, with the CAS number 4299-72-3. This compound serves as a versatile chemical intermediate and active ingredient, valued for its phenolic structure which imparts antioxidant and antimicrobial properties. It is primarily needed by manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries for synthesis and formulation processes.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and as a building block for drug discovery.
• UV Stabilizer & Antioxidant: Functions as a stabilizer in polymers, resins, and coatings to prevent degradation from light and oxygen.
• Agrochemical Synthesis: Serves as a key precursor in the manufacture of certain pesticides and herbicides.
• Hair Dye & Cosmetic Ingredient: Employed as a coupling agent in oxidative hair color formulations and in personal care products for its antimicrobial effects.
• Chemical Research & Development: Utilized as a reagent in organic synthesis and material science research.
• Rubber & Elastomer Additive: Acts as an antioxidant and anti-aging agent in rubber compounding.

Basic Information

Product Name	5-Ethyl-1,3-Benzenediol
CAS No.	4299-72-3
Molecular Formula	C8H10O2
Molecular Weight	138.16 g/mol
Synonyms	5-Ethylresorcinol; 1,3-Dihydroxy-5-ethylbenzene; 5-Ethyl-1,3-dihydroxybenzene; m-Dihydroxyethylbenzene; 5-Ethylbenzene-1,3-diol; 5-Ethylresorcin; Ethylresorcinol
EINECS	224-309-5

Quality Control

Our 5-Ethyl-1,3-Benzenediol is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC and GC analysis, to ensure high purity and consistency. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	138°C - 142°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.