1-Methylnaphthalene

Packing:200kg drum

Specification:  CAS NO.:90-12-0

Appearance: Colorless to pale yellow oily liquid with a naphthalene like odor ; Assay：99%min by GC ; IR Identity: conform to standard ; HNMR： conform to standard ; carbon spectrum: conform to standard ; Water by K. F.:0.5% max or as per the customer’s request ; Loss on drying:0.5% max. or as per the customer’s request ; Melting point: -22 °C; boiling point: 240-245 ° C (atmospheric pressure);

Used mainly in

This compound has a wide range of applications in industry and scientific research, mainly including: As a printing and dyeing carrier, it is used in the dyeing process of polyvinyl chloride (PVC) fibers and polyester to help the dye distribute evenly. Used as a solvent and heat carrier, suitable for high boiling point reaction systems and industrial heat transfer media. As a raw material for plasticizers, fiber dyeing aids, and surfactants. Used as a sulfur extractant, pesticide emulsifier (such as 666), and diesel cetane number tester. As a pharmaceutical intermediate in organic synthesis, it is used to produce fluorescent whitening agents, 1,4-naphthalenedioic acid, naphthylacetic acid, etc. It is also used in the field of essence and fragrance.

Synthesis lines:

The synthesis of 1-methylnaphthalene mainly occurs through the following pathways: Separation from coal tar: In industry, 1-methylnaphthalene is one of the by-products of coal tar distillation, which is separated and purified through methods such as distillation and crystallization. Chemical synthesis: It can be prepared through routes such as the condensation reaction of methylated naphthalene or o-xylene with styrene. For example, there are literature reports on the synthesis of derivatives such as 1,4-naphthalenedioic acid through oxidation reactions using 1-methylnaphthalene as the raw material. Other methods include using catalysts for alkylation reactions, or synthesizing naphthalene derivatives by reacting organic metal reagents (such as Grignard reagents).