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Coatings Ingredients
The material selection platform
Coatings Ingredients
by SpecialChem
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Technical Datasheet | Supplied by DKSH
HSP Distance with Pigment Yellow 154: 1.1
Luna-PTSI P is a low viscosity reactive additive used for the formulation of polyurethane products supplied by DKSH. It prevents moisture relaced problems by relacing with trace moisture. Excess water reacts with Luna PTSI-P towards the corresponding carbamic acid, which undergoes immediate decomposition to form carbon dioxide and the relatively inert p-toluenesulfonamide, which is commonly used as a plasticizer. Luna-PTSI P prevents thickening of polyurethane coatings during storage. It does not dimerize or trimerize as alkyl and aryl isocyanates do. When stored, purified diisocyanates tend to deteriorate and discolor. In this case, Luna-PTSI P can be used for stabilization to improve shelf life. It has a shelf life of one year. This product is available in Europe, Asia and North America.
Product Type
Moisture Scavengers
Chemical Composition
Tosyl isocyanate
CAS Number
Physical Form
Clear, colorless
Product Status
Geographical Availability
Asia / Pacific, Central and Eastern Europe, North America, Western Europe
Applications/ Recommended for
  • Coatings
  • Resins > Polyurethanes (PU)
Labels/Agency Rating
EC No.: 223-810-8

Luna-PTSI P Properties


Value & Unit
Test Condition
Test Method
Color, APHA
< 20
> 98.0 %
(Gas Chromatography)
p-Toluenesulfonyl Chloride Content
< 1.0 %

Compatiblity with other products

Find products that are predicted to be compatible with Luna-PTSI P.

This list of compatible products is generated out of estimated HSP values. A practical determination of these HSP values would provide higher certainty.
Learn more about Hansen Solubility Parameters (HSP) and their use in predictive formulation.

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