About
organic synthesis technologies to
manufacture and develop functional dyes and
hydrogen peroxide production catalysts
that contribute to society.
Why customers choose us
Established: 1925
Yamamoto Kako, founded in 1925, embarked on the domestic production of organic pigments.
Leveraging advanced organic synthesis techniques, the company has been engaged in the development and manufacturing of various functional pigments.
Approaching its centennial anniversary, the company has demonstrated a commitment
Repertoire of developed pigments
With a legacy spanning nearly 100 years since its establishment, we take pride in our extensive track record of accumulating technological expertise, resulting in a repertoire of over 15,000 pigments.
Our product lineup, including both established and in-development items, boasts a collection of over 4,000 pigments. We continue our
Catalysts for hydrogen peroxide production
As the sole domestic producer of alkyl anthraquinone, we are a key supplier of hydrogen peroxide production catalysts to countries worldwide.
Our customers consistently recognize the high and stable quality of our products.
As a result, AAQ-H, in particular, has achieved overwhelming market share.
Ratio of R&D expenses to sales
With a research and development expenditure ratio surpassing 10% of sales revenue (based on 2022 performance), the company is a research and development-oriented manufacturing enterprise specializing in organic synthesis.
Yamamoto Chemical excels in the field of organic synthesis, offering a wide range of high-quality products. One of our key strengths is the ability to flexibly customize products to meet the specific needs of our customers. This capability enables us to respond to a diverse array of requests, earning us a high level of trust and recognition from our clients.
Yamamoto Chemical possesses outstanding expertise in organic synthesis within the Mitsui Chemicals Group. Building on this core technology, we have developed high-performance materials and products that contribute to society and enhance everyday life. With this strong commitment, we have been carrying forward a legacy of over 100 years.
Yamamoto Chemical maintains a strict quality control system to deliver safe and reliable products to both domestic and international markets. We are dedicated to sustainable manufacturing and actively develop products aimed at reducing environmental impact.
Research and Development
Leveraging technologies cultivated over a long history spanning over nine decades, Yamamoto Chemicals engages in the research and development of functional dyes that benefit society. Yamamoto Chemicals is looking for people to help carry on that legacy.
Contact Us
For consultations or queries regarding
Yamamoto Chemicals and its products,
feel free to contact us via telephone
or the email inquiry form.
Telephone queries: [Tokyo Office]
+81-3-6402-2191Weekdays 9:00 a.m. to 5:00 p.m.,
closed Saturdays, Sundays and public holidays