Isopropyl alcohol accommodating body, manufacturing method for said accommodating body, and quality control method for isopropyl alcohol accommodating body
AssigneeTokuyama Corporation
InventorsAkito Honda, Yuki Yamaguchi, Yuki Tamori
Life of this patent
Estimating the term…
Abstract
Provided is an isopropyl alcohol accommodating body that accommodates isopropyl alcohol in a container. The isopropyl alcohol accommodating body has, in the container, an oxygen content of 0.001 to 0.100 mol ppm with respect to the isopropyl alcohol, and the content of acetone as an impurity in the isopropyl alcohol is 10 to 200 ppb based on mass. Also provided are a manufacturing method for the isopropyl alcohol accommodating body and a quality control method for the isopropyl alcohol accommodating body.
Claims23
An isopropyl alcohol accommodating body comprising:
- isopropyl alcohol accommodated in a container,
- an oxygen content in the container being 0.001 ppm by mol to 0.100 ppm by mol with respect to the isopropyl alcohol,
- a content of acetone as an impurity in the isopropyl alcohol being 10 ppb to 200 ppb on a mass basis.
A method for manufacturing an isopropyl alcohol accommodating body in which isopropyl alcohol is accommodated in a container, the method comprising:
- setting an oxygen concentration in a gas in the container to 0.1 ppm to 10 ppm on a volume basis when the isopropyl alcohol is accommodated in the container.
A method for manufacturing an isopropyl alcohol accommodating body in which isopropyl alcohol is accommodated in a container, the method comprising:
- accommodating the isopropyl alcohol in an amount of 2% to 98% of a volume of the container;
- and
- setting an oxygen concentration in a gas in the container to 0.1 ppm to 10 ppm on a volume basis when the isopropyl alcohol is accommodated in the container.
A method for manufacturing an isopropyl alcohol accommodating body in which isopropyl alcohol accommodated in a first container is transferred to a second container, the method comprising:
- setting an oxygen concentration in a gas in the second container to 0.1 ppm to 10 ppm on a volume basis when the isopropyl alcohol is accommodated in the second container.
A quality control method for an isopropyl alcohol accommodating body in which isopropyl alcohol is accommodated in a container, the method comprising:
- setting a concentration of dissolved oxygen in the isopropyl alcohol to 0.001% to 0.050% with respect to an oxygen saturation solubility at 25° C. in the atmosphere;
- and
- setting an oxygen concentration in a gas in the container to 0.1 ppm to 10 ppm on a volume basis.
Dependencies are inferred from the claim text.