SEDL / STP / STP1146-EB / STP20192S

An Unexpected Interaction Between Inerts Used in Solvent Based Formulations

Dean, SW
Chemical EngineerPrincipal Research Chemist, American Cyanamid Company, Princeton, N. J.

Dexter, RW
Chemical EngineerPrincipal Research Chemist, American Cyanamid Company, Princeton, N. J.

Pages: 8    Published: Jan 1993

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Abstract

In the course of an investigation on a formulation, it was found that under certain conditions two inert ingredients (calcium dodecylbenzene sulfonate (CaDDBS) and triethylene glycol (TEG) combined to form a crystalline precipitate. This novel complex of CaDDBS and TEG occurs only in non-aqueous systems; the presence of small amounts of water prevents its formation. The effects of temperature, chemical structure of the CaDDBS, water content and alcohol content are addressed.