Analysis of TDI and HDI of toluene diisocyanate and hexamethylene diisocyanate in coatings

Internal standard: Tetradecane or Anthracene

Sample injector: 250 ℃ FID: 280 ℃ Column furnace: 180 ℃

Chromatography column: 0V-1 (30m * 0.25 * 0.25) Column pressure: 8psi Split flow: 20ml/min

Injection volume: 1ul

Injection method: Split injection

Detector: Wide Range FID

Peak order:

1. TDI toluene diisocyanate; 2. HDI hexamethylene diisocyanate; 3. N-tetradecane (internal standard);

Applicability: Meets the following standards

GB/T 18446-2009 Determination of Diisocyanate Monomers in Lacquer based Isocyanate Resins for Paints and Varnishes