Cheméo, Chemical and Physical Properties

Cheméo gives your agent direct access to thermophysical property data for chemical compounds: critical constants, vapor pressure, heat capacity, enthalpies of formation, fusion and vaporization, density, viscosity, surface tension, flash points and flammability limits, and around 130 properties in total.

Search by name, formula, CAS number, InChI or SMILES. Temperature- and pressure-dependent properties come back as full data tables rather than a single number, so a correlation can be fitted or a value read at the condition you actually care about. Every value carries its literature source, which matters when the result ends up in a design calculation or a safety review.

For molecules the database doesn't hold, sixteen of the most-used properties — critical point, normal boiling and melting points, acentric factor, enthalpy of vaporization, log P, water solubility and others — can be estimated from structure. UNIFAC, UNIQUAC and Joback group assignments are available for compounds that have them, for use in activity-coefficient and group-contribution work.