Modified MDI NPU MX

Overview

NPU MX is a liquefied (modified) MDI from Tosoh’s Ruian plant in China, sold under the NPU brand. It is based on 4,4′-MDI that has been partly modified so that it stays liquid at room temperature and is easier to handle than solid pure MDI.

Also known as

Modified MDI; Liquefied MDI; Liquid MDI

CAS number

101-68-8 (4,4′-MDI, main component)

Molecular formula

C15H10N2O2 (4,4′-MDI, main component)

Specifications

Test items	Specifications
Appearance	Colorless to slightly yellow transparent liquid
Color (APHA)	≤80
NCO content /wt%	29-30
Hydrolyzable chloride /ppm	<30
Viscosity (25°C) /mPa·s	25-30
Density /(g/cm³)	1.22

Applications

• Polyurethane elastomers, microcellular parts and shoe soles
• Semi-rigid and integral-skin foams
• Coatings, adhesives and sealants
• Prepolymer production

Packaging

250 kg/drum.

Storage

Store in tightly sealed containers in a dry, well-ventilated room at 15–35 ℃. Protect from moisture, which reacts with isocyanates; handle with suitable protective equipment.