2. Corporate profile
Corporate Name
Otsuka-MGC Chemical Company, Inc.
Hiroyasu Hayashi (President)    
Business Line
Production and Sales of Hydrazine Hydrate (HH)
Head Office
zip code 550-0002
Edobori 1-5-16, Nishi-ku, Osaka, Japan
(Higobashi MID Building second floor)     »MAP
Tel 81-6-6445-1501
Fax 81-6-6445-1502
450million yen
Otsuka Chemical Co., Ltd. 51%
Mitsubishi Gas Chemical Company, Inc. 49%
Otsuka Chemical Co., Ltd. pioneered the Hydrazine Hydrate and its derivative business as the first manufacturer in Japan.
Mitsubishi Gas Chemical Company, Inc began its Hydrazine Hydrate business with their production process technology and expanded the business.
KOC Co., Ltd. was established and started its Hydrazine Hydrate business in Ulsan, Korea as the second production site of Otsuka Chemical Co, Ltd.
Otsuka-MGC Chemical Company, Inc. was established as the JV Company consolidating the business in Hydrazine Hydrate from Otsuka Chemical Co., Ltd. and Mitsubishi Gas Chemical Company, Inc
Production Capacity
  •   20,000 tons per annum as 100% N₂H₄・H₂O
  •     10,000 tons – Yokkaichi Factory, Japan
  •     10,000 tons – KOC, Korea

Sales system

Products made in KOC Korea are exported to the world market. This includes exports to Japan, where some concentrations are diluted at our Tokushima facilities. Meanwhile, the marketing and sales for the Korean market is handled by KOC. Products made at Yokkaichi, Japan are mainly designed for the Japanese market, but are partially sold for the export markets as well.

Factory and Subsidiaries

Yokkaichi Factory
zip code 510-0886
Hinagahigashi 2-4-16 Yokkaichi, Mie, Japan
Tel 81-59-345-8800
Fax 81-59-347-0799
KOC Co., Ltd
67-34 Ijin-ro, Onsan-eup, Ulju-gun, Ulsan, 44998 Korea
Tel 82-52-240-1200
Fax 82-52-238-5886
Production and domestic sales of Hydrazine Hydrate, Sodium Hydroxide, liquid Chlorine and Sodium Hypochlorite