JFE Chemical Corporation

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JFE Chemical Corporation

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Napthalene and phthalic anhydride

JFE Chemical is Japan’s

largest producer.

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.

Naphthalene Plantation

95% naphthalene

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.

95% naphthalene
Main applications
  • Phthalic anhydride
  • Dyes and intermediates (bon acid, β-napthol)
  • Surfactants
Main grades
Freezing point (°C) Purity (%) Nonvolatile component (%) Moisture (%)
>78.0 >96.0 <0.20 <0.5

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Refined naphthalene

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.

Refined naphthalene
Main applications
  • Dispersants for emulsion polymerization
  • Insect repellants
  • Dyes and intermediates
  • Organic pigments
Main grades
Purity (%) Total sulfurr
(ppm)
Basic nitrogen (ppm) Nonvolatile component (%)
>99.0 <30 <3.0 <0.1

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Phthalic anhydride

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.

Phthalic anhydride
Main applications
  • Raw material for plasticizing agents
  • Paints and pigments
  • Unsaturated polyester resins
Main grades
Purity (%) Color (-) Hazen units (-) Freezing point (°C) Total sulfurr
(ppm)
>99.5 Colorless, transparent <20 >130.9 <10

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Surfactants (NSF)

Contributing to improved public infrastructure

One of our group companies, K&D Fine Chemicals (Co., Ltd.), manufactures water reducing agents for concrete, dispersants for emulsion polymerization of synthetic rubbers, as well as dye dispersants and other surfactants (NSF: naphthalene sulfonic acid formalin condensate). The water reducing agents for concrete are used for enhancing the strength of electric power poles and Hume pipes (drain pipes), thereby contributing to improving public infrastructure.

Main applications
  • Water reducing agents for concrete

    Adding a mere 1% of a water reducing agent to concrete improves the fluidity of concrete and makes it easier to handle.
    Also, since fluidity can be enhanced without adding water, this product can enhance the strength of concrete by reducing the amount of water in the concrete.

    Water reducing agents for concrete
  • Dye dispersants

    These dispersants can prevent any differences in the shade of color, to ensure color uniformity.
    The products are mixed with dyes for garment dyeing processes and with inks for printers.

    Dye dispersants
  • Dispersants for emulsion polymerization
    of synthetic rubbers

    These dispersants are used in manufacturing processes for the synthetic rubbers typically used for automobile tires.
    These are functional chemical products used for enhancing the uniformity of “emulsion polymerization” reactions.

    Dispersants for emulsion polymerization of synthetic rubbers
Main product grades
Product series Product name Appearance (hue) Density (%) pH Expected function Applications and features
Lavelin
Lavelin
LT
FM-45
Brown liquid
Brown liquid
Approx. 45%
Approx. 45%
Approx. 10
Approx. 7
Dispersion, low foaming
Dispersion, low foaming
Emulsifier, dispersion stabilizer, dispersant (dyes, pigments)
Same
Cell flow S-110 Brown liquid Approx. 40% Approx. 9 Dispersion, low foaming Water reducing agents for concrete, dispersants
Note 1) Lavelin and Cellflow are registered trademarks of DKS Co., Ltd.
Note 2) The above are specifications of typical products. In total, we produce and sell approximately 30 products.
Note 3) We sell products in solid (powder) form as well as liquid form.

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