Napthalene and phthalic anhydride
Naphthalene is used as a raw material for producing a variety of substances, including phthalic anhydride, dye intermediates, surfactants, and basic chemical products. As well as producing refined naphthalene, phthalic anhydride, and surfactants in our own plants, we supply 95% naphthalene to customers in Japan and around the world.
We can also export melt (liquid) using specially equipped ships.
To manufacture 95% naphthalene, coal tar is first distilled. The oil from the resulting distillate, containing a large amount of naphthalene, is then further refined and distilled.
95% naphthalene is used as a raw material for making the company’s phthalic anhydride, as well for surfactants and refined naphthalene. JFE Chemical ships 95% naphthalene for use as a dye intermediate and raw material for chemicals, both nationally and overseas, utilizing special ships (for melt) and ISO containers.
- ●Phthalic anhydride
- ●Dyes and intermediates (bon acid, β-napthol)
|Freezing point (°C)||Purity (%)||Nonvolatile component (%)||Moisture (%)|
High-purity naphthalene, produced by eliminating all impurities.
This high-purity substance is the result of purifying 95% naphthalene further, by hydrodesulfurization, adsorption denitrification, and crystallization. It contains a very low level of impurities, and is widely used as a dispersant for emulsion polymerization, to enhance the flexibility of rubbers used as raw materials for tires, and as a raw material for basic chemical products.
- ●Dispersants for emulsion polymerization
- ●Insect repellants
- ●Dyes and intermediates
- ●Organic pigments
|Purity (%)||Total sulfurr
|Basic nitrogen (ppm)||Nonvolatile component (%)|
JFE Chemical manufactures high-grade phthalic anhydride using the world’s only fluidized bed catalysis process.
Phthalic anhydride manufactured by catalytic oxidation of 95% naphthalene is widely used as a raw material in plasticizing agents to enhance the flexibility of PVC resins, for making wallpapers, floor electrical wire coverings, and PVC leather for home furnishings.
For the contact catalysis method, we employ the world’s only fluidized bed process for the manufacture of phthalic anhydride. The colorless, transparent phthalic anhydride we produce this way, is highly rated.
- ●Raw material for plasticizing agents
- ●Paints and pigments
- ●Unsaturated polyester resins
|Purity (%)||Color (-)||Hazen units (-)||Freezing point (°C)||Total sulfurr
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