Desmodur® T 80 – Leading Brand in Toluene Diisocyanate Technology

Covestro's Desmodur® series of isocyanates serve as central components in high-quality polyurethane applications, renowned for their extensive functionality and superior performance attributes. When combined with Covestro's polyols, Desmodur® isocyanates act as the cornerstone in producing polyurethane products with a wide array of exceptional qualities.

This product line displays remarkable versatility across numerous applications, including the manufacture of both flexible and rigid foams, adhesive formulations, self-skinning foams, composite materials processing, as well as solvent-borne and high-solid-content polyurethane (PU) coatings, adhesives, and sealants, offering users great flexibility in formulation design. Polyurethane products based on Desmodur® are widely used in automotive interior parts such as seats, dashboards, mattress manufacturing, construction insulation materials (for thermal insulation in buildings or refrigeration equipment), wheels, rollers, and various other automotive components.

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Moreover, Desmodur® isocyanates also function as high-performance ingredients in coating formulations, providing effective protection for everyday consumer goods, with applications spanning automotive interior and exterior parts, household appliances and electronic devices, furniture finishing, architectural façades, food packaging containers, ship antifouling coatings, and bridge protection, among many other industries. Additionally, Desmodur® isocyanates serve as foundational raw materials for optimizing adhesive performance, enabling customers to enhance key performance metrics such as bonding strength and durability.

Basic Info

Model NO.	584-84-9
Colour	Light Yellow
Purity	99.5%Min
Vapour Pressure	1.33
Flash Point	127
Refractive Index	1.569
Freezing Point	11.5~13.5ºC
Odor	Sharp, Pungent
Melting Point	21.8 °c
Un No.	2078
Class	6
Relative Density(Water=1)	1.22
Boiling Point	251 °c
Related Compounds	Polyurethane
Relative Density(Air=1)	6
Molecular Weight	174.16
Density	1.214 g/cm3, Liquid
Transport Package	Iron Drum
Specification	250kg iron drum
HS Code	2929101000

Product Parameters

SPECIFICATION	RESULT
PURITY(m/m):	99.9PCT
ISOMERIC RATIO(2.4/2.6):	79.5/20.5-81.5/18.5
ACIDITY(on HCL basis)(ppm):	40<
COLOR(APHA):	15
HYDROLYZABLE CHLORINE (PPM) :	<100

Given that TDI (Toluene Diisocyanate) possesses strong irritant properties, exerting significant irritation effects on skin, eyes, and respiratory system, it is imperative to pay close attention to and strictly abide by the following safety precautions when handling this chemical compound. Chief among these measures is to avoid direct contact between TDI and skin or eyes, as any such contact may lead to severe localized irritation reactions. Moreover, inhalation of TDI vapors is also hazardous; hence, during operations, it is essential to wear specialized protective gloves to safeguard hands, don a respirator or dust mask to prevent inhalation of toxic fumes, and equip oneself with safety goggles or a face shield to guard against potential splash entry into the eyes.

Regarding storage, TDI should always be stored in a cool and dry place, aiming to reduce the risk of chemical reactions triggered by excessive temperatures or high humidity levels, as well as to minimize vapor evaporation. In summary, across all aspects involving the manipulation and storage of TDI, there must be an emphasis on reinforced personal protective measures and strict adherence to established safety operating procedures to ensure both personnel health and workplace safety.

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