Gaseous oxygen detecting composition

Abstract

Abstract PURPOSE:To detect gaseous O2 simply and sharply at normal temperatures in anywhere unnecessary to use an electric circuit, by placing a homogeneous mixture of electrochromic (EC) substance and epoxy resin in an atmosphere to be measured and discoloring under the existence of gaseous O2 in said atmosphere. CONSTITUTION:An EC substance such as viologen bromide, spiropyrane compound, and KBr are dissolved in water and this aqueous solution and expoxy resin group adhesives (a mixture of a main agent and hardening agent) are mixed thoroughly. Then, said mixture is applied on a glass plate and this plate is placed in an atmosphere to be measured. It is discolored from colorless to colored by the existence of gaseous O2 and in case of using e.g. 1, 1'-(dipeptyl)- 4,4'-dipyridinium bromide, it is discolored from bluish green to yellowish brown. In this manner, a gaseous O2 detection composition capable of using at normal temperatures inanywhere without requiring an electric circuit is obtained.

Inventors

• 👤 Yasuie Suzuki
• 👤 鈴木　康家
• 👤 Yoshimasa Hiruma
• 👤 比留間　義昌

Bibliographic Details