Covestro certifies that the product meets specifications for 12 months from the date of shipment, provided it is stored and handled in accordance with the conditions specified in the ‘Storage’ section. After this period, product performance is not assured; Customers are responsible for retesting material before use. Covestro assumes no liability for product performance after 12 months.
Product description
Desmodur® T 80 is a mixture of 2,4- and 2,6-toluene diisocyanate (TDI) with an isomer ratio of approx. 80% 2,4-TDI and 20% 2,6-TDI.
Applications
Desmodur® T 80 is used to produce polyurethanes. Mainly it is used for the production of flexible slabstock and molded foams and polyurethane-based coatings and adhesives.
Form supplied
Desmodur® T 80 is a colorless to pale liquid.
Sampling
The access of moisture in any form must be prevented.
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Hydrolyzable chlorine content | ≤ 100 | mg/kg | TDI-01-03 | |
| Acidity | ≤ 40 | mg/kg | TDI-01-02 | |
| Purity | ≥ 99.5 | % | TDI-01-01 | |
| 2,4-TDI content | 79.5 - 81.5 | % | TDI-01-04 |
Typical Values
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Density | 1.21 - 1.23 | |||
| Viscosity, dynamic | 20 °C | 3 | mPa·s | DIN 53211 |
| NCO content | ≥ 48 | % | TDI-01-21 | |
| Freezing point | 12 - 14 | °C | ||
| Flash point | 132 | °C | DIN 51758 |
Storage
- Storage in original sealed Covestro container.
- Recommended storage temperature: 18 - 40 °C.
- Protect from moisture, heat and foreign material.
General information: The product is sensitive to moisture and heat. It should be protected against contact with atmospheric moisture. Higher storage temperatures for prolonged periods may result in discoloration or the formation of insoluble deposits. The product crystallizes at temperatures below 18°C. However, careful melting at up to 50°C will reliquify the product without any detrimental effect on its quality. The contact surface temperature may not exceed 80°C. The reliquified product must be homogenized as crystallization causes a shift in the isomer ratio between the crystalline and liquid phases. Opened containers must be resealed after removing product. If stored for long periods, the product should be overlaid with nitrogen. The product reacts with water to release carbon dioxide. During storage, transfer and handling, any contact with water (from damp containers, water-containing solvents, or humid air) must be prevented, as the resulting carbon dioxide generation may lead to dangerous pressure build-up. Additionally, the formation of polyureas can cause turbidity and may result in blockages of filters, pumps and pipes.
Storage time
Processing
Recommended temperature for processing (°C): 20 - 25.
Health and Safety Information
Before working with this product, you must read and become familiar with the available information regarding its risks, proper use, and safe handling. This information is provided in various formats, including the current Safety Data Sheet (SDS) and product label. SDS can be accessed via the following link:
Safety Data Sheets (SDS) for Covestro products | Covestro
For further questions, please use the contact information provided on this technical data sheet.
Disclaimer
Responsibility and Liability
The use of Covestro products, technical assistance, and information (regardless of how provided) is outside Covestro’s control and is solely the responsibility of the customer. The customer must conduct adequate testing to determine the suitability of products for its intended use, including but not limited to technical, health, safety, and environmental aspects. Unless otherwise agreed in writing, all products are sold exclusively under Covestro’s standard conditions of sale, which prevail in case of conflict and are available upon request.
The terms and conditions of sale and delivery are available via the following link:
https://order.covestro.com/covestrostorefront/saleConditions
All information is provided “as is” without warranties, express or implied, including merchantability or fitness for a particular purpose, and is subject to change without notice. To the maximum extent permitted by law, Covestro disclaims, and the customer assumes all liability for losses, damages, or claims arising out of use of Covestro products, technical assistance, or information. Any statement or recommendation not expressly contained in Covestro documentation is unauthorized and shall not bind Covestro. Nothing herein shall be construed as encouraging or recommending the use of any product in conflict with any claim of any patent. No license is implied or in fact granted under the claims of any patent.
Restrictions on Regulated Applications
This product is not intended for use in regulated applications such as agriculture, cosmetics, drinking water contact, medical products (e.g., medical devices), toys, or similar uses subject to specific regulatory requirements. Prior written approval from Covestro is required before this product may be used in any regulated application. The customer is solely responsible for ensuring compliance with all applicable laws and determining product suitability. Covestro disclaims all liability and warranties for unauthorized regulated uses.
Typical Value
The values provided are typical only and do not represent binding specifications. Unless expressly confirmed in a written contract, these values are not part of the contractual quality agreement and must not be relied upon as a warranty or guarantee of product performance.
Sample
Samples provided by Covestro are intended solely for evaluation and testing purposes by the customer and may not be used in commercial applications, resold, transferred to third parties (except qualified testing service providers acting on behalf of the customer), reverse engineered, modified, or used in any manner not explicitly authorized in writing by Covestro. Samples are provided ‘as-is’ without any warranties, express or implied, including fitness for a particular purpose. Customers are solely responsible for ensuring safe handling, regulatory compliance, and suitability of the material for their intended evaluations. Covestro disclaims all liability for damages or losses arising from the use of samples.
Contact Information
Please use our contact form or contact us directly by sending an e-mail to technical-datasheets@cx.covestro.com .
