nonvolatile

[non-vol-uh-tl, -til or, esp. British, -tahyl]

adjective

not volatile.
(of computer memory) having the property of retaining data when electrical power fails or is turned off.

Origin of nonvolatile

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

In this way the salt can be separated from nonvolatile impurities.
An Elementary Study of Chemistry
William McPherson
The pharmacy name of an alcoholic solution or extract of a nonvolatile vegetable substance.
Surgery, with Special Reference to Podiatry
Maximilian Stern
Steam distillation indicated that the product consisted of volatile and nonvolatile constituents.
The Propaganda for Reform in Proprietary Medicines, Vol. 2 of 2
Various
The process of distillation practically removes all nonvolatile foreign matter, mineral as well as organic.
An Elementary Study of Chemistry
William McPherson