The TI-95, also called the TI-95 PROCALC, is a keystroke programmable calculator and was introduced in 1987 by Texas Instruments.

Compatible ROM and extra RAM could be placed in the expansion slot in the upper right corner of the device, which came from the factory with a dummy protector cartridge labelled "ROM/RAM".

Texas Instruments would release three compatible ROM cartridges, one containing advanced mathematics functions such as the Gamma function and Newton's method labeled Mathematics, a second containing statistics features such as the normal and Student's t distributions and various statistical tests labeled Statistics, and a third containing functions and data on common industrial chemicals labelled as Chemical Engineering.

These cartridges came with manuals detailing the operation of their functions, as sometimes the limitations of the TI-95's design made the use of the various programs obtuse.

The Chemical Engineering Library was designed to assist industrial chemical engineers in their workflows, by including a large library of 261 commonly-used organic compounds which can be looked up by an ID number accessible from the manual, as well as from a small guidebook included with the software package, designed to fit inside the calculator's hard carrying case, though any other chemical can be used by manually inputting the various properties required for individual calculations.