Description

Polymethylnaphthalene CAS NO 78900-94-4 is a high-purity aromatic hydrocarbon mixture derived from naphthalene. This versatile chemical intermediate is valued for its excellent solvency, thermal stability, and compatibility with various polymers and resins. It is essential for manufacturers in the polymer, specialty chemical, and advanced material sectors seeking reliable performance in demanding formulations.

Application

• As a high-boiling point solvent and plasticizer in polymer and resin formulations.
• Intermediate in the synthesis of specialty chemicals, dyes, and pigments.
• Component in heat transfer fluids and high-temperature lubricants.
• Raw material for producing naphthalene-based surfactants and dispersants.
• Used in the development of advanced carbon materials and graphite precursors.
• As a processing aid and compatibilizer in composite materials.

Basic Information

Product Name	Polymethylnaphthalene
CAS No.	78900-94-4
Molecular Formula	Typically C11H10 to C15H18 (mixture)
Molecular Weight	Varies by composition
Synonyms	Methylnaphthalene Homologs; PMN; Poly(methylnaphthalene); Methylated Naphthalene Oligomers; Aromatic Hydrocarbon Resin; High-Boiling Naphthalene Fraction; Naphthalene, methyl-
EINECS	Contact for details

Quality Control

Our Polymethylnaphthalene is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistency and meets defined specifications for composition, purity, and key physical properties. Certificates of Analysis (COA) documenting these results 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 away from incompatible materials. Recommended storage temperature is 15-25°C. Keep container sealed when not in use to prevent contamination and minimize exposure to air.

Specification

Item	Specification
Appearance	Clear, viscous liquid to solid
Color	Light yellow to amber
Identification (IR)	Conforms to standard
Composition (GC)	Predominantly methylnaphthalene isomers & homologs
Boiling Range	Contact for details
Flash Point	> 100 °C

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