ISOCYANATE

DESCRIPTION

Toluene di-isocyanates are a mixture of two isomers: Toluene-2,4-diisocyanate (2,4-TDI) and Toluene-2,6-diisocyanate (2,6-TDI):

• 80% Toluene – 2,4-Diisocyanate (A)
• 20% Toluene – 2,6-Diisocyanate (B)

Toluene di-isocyanate (TDI) is a clear liquid with low viscosity at room temperature. TDI is insoluble in water. It is miscible with alcohols, di-glycols, mono-ethyl ether, ethers, acetones, carbon, benzene, chlorobenzene, kerosene and olive oil.

Toluene di-isocyanates are reactive compounds used in combination with polyether polyols and polyol polyols for the production of polyurethane foams.

Toluene di-isocyanate is not found naturally in the environment.

Main areas of use:

• Flexible polyurethane foam
• Poly-Polyurethane coatings
• Elastomer systems for coatings, adhesives, sealants

Delivery Information

• Lots in bulk (tankers or containers)- net weight: 20-25 tons
• Barrels – net weight: 210-250 kg/barrel

Storage

Toluene Di-Isocyanate is a product sensitive to humidity and heat. Storage is recommended product at temperatures between 15-30°C and avoiding humidity. Under appropriate conditions storage in sealed containers, the product will maintain its properties for 6 months from the date of delivery.

For longer periods of time, it is recommended to store the product under the nitrogen blanket. At temperatures below 15 °C, the product is crystallized. However, through a mild heating the product will be re-liquefy without affecting its quality.

TDI reacts with water releasing carbon dioxide. During storage, transfer and handling product, contact with water in any form should be avoided (wet containers, water solvents, humidity in the air) because the release of carbon dioxide could generate a dangerous increase of pressure

Security Information

Please refer to the Material Safety Data Sheet (MSDS), which come to support customers in order to better meet the requirements related to storage, security and handling as well as those arising from local regulations in health and safety.

Important

TDI is a very toxic product.

Like other isocyanates, toluene di-isocyanate is a highly reactive compound.

TDI can react violently with compounds based on active hydrogen atoms (such as alcohol) and can generate enough heat for self-ignition and, as a result, will result in products toxic combustibles

Other solvents not to be mixed with TDI: water, acids, bases and products strong alkalis, such as
sodium hydroxide and tertiary amines.