A mixture of 2, 4 toluene diisocyanate and 2,5 toluene diisocyanate.

Toluene di-isocyanate.

Toluene diisocyanate: a polyurethane basic product

Toluene diisocyanate (a precursor for polyurethanes).

tolerable daily intake. Tolerable daily intake, or TDI, is the amount of a contaminant that is safe for humans to take in every day for an entire lifetime (i.e., long-term exposure). TDI levels are calculated based on data for large groups of people. An acceptable intake level for an individual person may be somewhat different than the (group) TDI. If a person takes in an amount higher than the TDI it does not necessarily mean that health problems will develop. It means only that the margin of safety is reduced, and there is a greater risk of developing a health problem. TDIs are developed with a high degree of caution and a very large safety factor. Only extremely low risk is associated with taking in contaminants up to the TDI level.

(tolerable daily intake): the maximum amount of a chemical which can theoretically be safely ingested. WHO and various governments set TDIs for some chemicals of concern.

tolerable daily intake. Regulatory value equivalent to the acceptable daily intake established by the European Commission Scientific Committee on Food. Unlike the ADI, the TDI is expressed in mg/person, assuming a body weight of 60 kg. TDI is normally used for food contaminants RT acceptable daily intake

Transport Driver Interface. In the networking model, a common interface for network components that communicate at the Session layer.

Transport Driver Interface. A common set of routines for network layer components that communicate with the session layer of the Open Systems Interconnection (OSI) model. These routines allow software components above and below the transport layer to be mixed and matched without reprogramming. See also: Open Systems Interconnection (OSI) reference model