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DDT2000

(Database of Dynamic/Developed Technology 2000) is a curated database of organic reactions, specifically designed to store and retrieve synthetic transformations with a focus on:

Preferred citation

: Marcolli, C., Luo, B., & Peter, T. (2001). DDT2000: A database of deliquescence relative humidities for atmospheric aerosols. Journal of Geophysical Research: Atmospheres, 106(D22), 28481–28491.

For power users, a RESTful API allows automated bulk downloads of interaction data for high-throughput analysis.

Live Data Monitoring

: It provides the definitions needed to visualize real-time sensor data (e.g., fuel pressure, turbo boost, battery voltage) with high precision. Key Components & Structure

Locate the Database

: The database is often found as a compressed file named ecu.zip or a folder named ecus .

Why is the ddt2000 Database Important?

What makes the database so critical?

  1. Particle size effects – Most data are from bulk or micron-sized particles. For nanoparticles (<50 nm), the Kelvin effect raises the DRH substantially. DDT2000 does not include Kelvin corrections natively, though it provides base data for such calculations.
  2. Kinetics – The database gives equilibrium thermodynamics. However, deliquescence can take minutes to hours if the particle is coated with an insoluble organic film. No kinetic rate constants are included.
  3. Organic–inorganic interactions – While mixed systems exist, the parameter space is sparse. Real atmospheric particles contain hundreds of organic species; DDT2000 simplifies to surrogate mixtures.
  4. Outdated entries – Some compounds labeled “C” (low reliability) have since been remeasured with better techniques. Users are encouraged to cross-check with the latest literature (post-2015) for critical applications.