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  1. Home
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  3. 大塚化学
Chemical
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大塚化学

addressTokyo/Chiyoda-ku/2-2 Kanda Tsukasa-cho, Otsuka Pharmaceutical Kanda No. 2 Building
phone03-5297-2727
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last updated:Jun 24, 2025
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  • Products/Services(36)
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大塚化学 Company Profile

We are developing new era chemical products across a wide range of fields!

Otsuka Chemical Co., Ltd. is a company that develops a wide range of chemical products for a new era, from inorganic chemicals to organic chemicals, fine chemicals, and specialty chemicals. We handle products such as "titanates," as well as other derivatives, resin composite materials, and resin additives.

Business Activities

Manufacturing and sales of chemicals.

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Contract manufacturing (pharmaceuticals/chemicals)

Contract manufacturing (pharmaceuticals/chemicals)

Manufacturing compatible with Category 5 of the Fire Service Act! We have a track record of producing various hydrazine derivatives.

Otsuka Chemical Co., Ltd. has been developing contract manufacturing businesses for chemicals and pharmaceuticals based on the technological capabilities cultivated since its establishment in 1921. We understand the individual needs and quality requirements of our customers, as well as the demands of each industry, and we realize product development that satisfies our customers under thorough quality control. In chemical manufacturing, we provide consistent support from research and development to mass production, enabling our customers to realize their products. In pharmaceutical manufacturing, we respond to a wide range of contract needs centered around our CRDMO services, which allow for consistent handling from raw materials to active pharmaceutical ingredients, from research stages to manufacturing stages. 【Features】 ■ Capable of handling/manufacturing hazardous materials classified as Type 5 under the Fire Service Act, with designated quantities exceeding 100 times ■ Automatic control via DCS and monitoring of pressure/temperature, etc. ■ Low-temperature reaction vessels allow for reactions at -25°C using CBR equipment ■ Proven track record in thermal filtration and activated carbon removal at high temperatures ■ Explosion-proof centrifugal separators with Ti lining enable solid-liquid separation of organic solvents and acidic substances *For more details, please download the PDF or feel free to contact us.

Products/Services (36)

Contract manufacturing (pharmaceuticals/chemicals) product image
Contract manufacturing (pharmaceuticals/chemicals)
Pharmaceutical raw materials and intermediates / Food additives, etc. product image
Pharmaceutical raw materials and intermediates / Food additives, etc.
Tisumo blended 3D printer resin composite material "Pochi Con Filament" product image
Tisumo blended 3D printer resin composite material "Pochi Con Filament"
Rubber additive "Acroad" product image
Rubber additive "Acroad"

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catalog(8)

Survey responses are required to view e-book details. Click to view the e-book.

Contract manufacturing (pharmaceuticals/chemicals)

Contract manufacturing (pharmaceuticals/chemicals)

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Special Amino Acid Catalog

Special Amino Acid Catalog

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Conductive ceramic "Dentore"

Conductive ceramic "Dentore"

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Functional inorganic material "Tismo (potassium titanate fiber)"

Functional inorganic material "Tismo (potassium titanate fiber)"

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news(17)

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We have launched a page regarding our contract manufacturing business.

  • COMPANY

Our company has started a contract manufacturing business. We are equipped with advanced facilities, including equipment for manufacturing Class 5 hazardous materials under the Fire Service Act, low-temperature reaction vessels capable of handling -25°C, and centrifuges with Ti lining. With the technological expertise cultivated as a global company in hydrazine, we provide consistent support from research and development to mass production.

Oct 24, 2025

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Notice of participation in "High-Performance Material Week, Plastic Japan, Film Tech Japan" from November 12 (Wednesday) to November 14 (Friday), 2025.

  • SEMINAR_EVENT

Otsuka Chemical Co., Ltd. will jointly exhibit with Toyama Film at the "16th High-Functionality Materials Week, Plastic Japan, Film Tech Japan" held at Makuhari Messe. This exhibition is one of the largest comprehensive exhibitions in the world for high-functionality materials, recycling technology, laser technology, and electronic displays. We plan to showcase specific use cases and contract manufacturing related to our functional polymers "TERPLUS," functional inorganic materials "TISMO," white conductive fillers "DENTALL," functional resin composite materials "POTICON," resin composite materials for 3D printers "POTICON FILAMENT," precision molded parts "POTICON GEAR," and sheet materials for semiconductor inspection jigs "POTICON PLATE," among others. We look forward to your visit.

Oct 24, 2025

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KATACHI Story: Column 3 - What is PEEK Processing? A Comprehensive Explanation from Basic Characteristics to Processing Precautions and Selection Points.

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Otsuka Chemical has started publishing "KATACHI Story column articles." Column 3: "What is PEEK Processing? A Comprehensive Explanation from Basic Properties to Processing Precautions and Selection Points" PEEK is increasingly adopted in various fields such as medical, aerospace, and semiconductors due to its excellent heat resistance, chemical resistance, and mechanical strength. However, its high performance also makes processing challenging, requiring advanced technology and specialized knowledge for precision part manufacturing. This article provides information to help manufacturers successfully process PEEK, covering its basic properties, processing precautions, and points for selecting the optimal processing partner. For more details, please visit our company's website's KATACHI Story through the related link.

Sep 19, 2025

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Detailed information

Company name 大塚化学
Contact addresspostalcode 101-0048 Tokyo/ Chiyoda-ku/ 2-2 Kanda Tsukasa-cho, Otsuka Pharmaceutical Kanda No. 2 BuildingView on map TEL:03-5297-2727
Business LocationsClick here for the list
Industry Chemical
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