Description

1,2-Dihydro-2,2,4,7-Tetramethylquinoline is a versatile quinoline derivative with significant utility as an intermediate and stabilizer in industrial chemistry. Its value lies in its antioxidant properties, which make it effective in protecting materials from degradation caused by oxidation and heat. This compound is primarily needed by manufacturers in the polymer, rubber, and specialty chemical industries for applications requiring high-performance stabilization.

Application

• Polymer Stabilizer: Acts as an antioxidant and light stabilizer in polyolefins (e.g., polyethylene, polypropylene) to extend product lifespan.
• Rubber Industry: Used as an antiozonant and antioxidant in the production of synthetic rubbers and tires to prevent cracking and aging.
• Fuel & Lubricant Additive: Serves as an antioxidant additive in fuels, oils, and greases to inhibit gum formation and oxidative degradation.
• Chemical Intermediate: A key building block for the synthesis of more complex quinoline-based compounds, dyes, and pharmaceuticals.
• Agricultural Chemicals: Employed in the formulation of certain pesticides and agrochemicals as a stabilizing component.
• Adhesives and Sealants: Enhances the thermal and oxidative stability of adhesive formulations.

Basic Information

Product Name	1,2-Dihydro-2,2,4,7-Tetramethylquinoline
CAS No.	1810-62-4
Molecular Formula	C₁₃H₁₇N
Molecular Weight	187.28 g/mol
Synonyms	2,2,4,7-Tetramethyl-1,2-dihydroquinoline; TMQ; Polymerized 2,2,4-Trimethyl-1,2-dihydroquinoline; Antiozonant TMQ; 6-Ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline (related); Dihydrotrimethylquinoline; Flectol TMQ; Vulkanox HS/LG
EINECS	217-318-0

Quality Control

Our 1,2-Dihydro-2,2,4,7-Tetramethylquinoline is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, color, and moisture content 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, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, consider an inert atmosphere (e.g., nitrogen blanket). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Light yellow to amber viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color (Gardner)	≤ 8
Moisture (KF)	≤ 0.5%
Refractive Index (20°C)	1.580 - 1.590
Specific Gravity (20/20°C)	1.020 - 1.050

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