Before working with this product, you must read and become familiar with the available information on its risks, proper use, and handling. Information is available in several forms, e.g., in particular in the currently valid safety data sheets and product labels. For further information contact your Covestro representative.
Product description
Baymedix MP325 is a modified diphenyl-methane-4,4'-diisocyanate (MDI) which is liquid at room temperature.
Form supplied
Form supplied is a colorless to yellowish liquid of medium viscosity at temperature above 20°C that crystallizes at lower temperatures.
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| NCO content | 22,5 - 23,5 | % | ||
| Viscosity | at 25°C | 500 - 700 | mPa∙s | |
| Hydrolysable Chlorine (CI) | max. 50 | mg/kg |
Typical Values
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Density | at 25°C | approx. 1,21 | g/cm3 | |
| Phenyl isocyanate content | ≤ 10 | mg/kg | ||
| Solidification temperature | < 20 | °C |
Storage
Baymedix MP325 should be stored in tightly sealed original containers and protected from moisture, heat, and foreign materials. The product is sensitive to moisture and should therefore be stored in its sealed original containers. Prolonged storage at temperatures above 25°C results in a deterioration in quality as the product becomes increasingly turbid owing to the formation of a sediment (dimers) that is not readily soluble. For example, storage stability at 40°C is limited to a maximum of 4 months. Storage at too low temperature results in crystallization which starts at temperatures below 20°C. To prevent crystallization, it must be ensured that the product does not cool to below 20°C. The product should be checked for crystallization on delivery. If crystallization has occurred during transportation, the product should be returned immediately. Freshly crystallized Baymedix MP325 during storage at customer site should be re-melted immediately by heating to a maximum temperature of 60 to 70°C. In doing so, it is important to ensure that the entire contents of the drum are melted and homogenized. The drum should then be kept sealed at the standard storage temperature (20 to 25°C). Recommended storage temperature is 20º-25ºC.
Storage time
Baymedix MP325 has a shelf life of six months from date of receipt at customer, provided the material is stored in sealed original containers at the recommended storage temperature.
Processing
It must be ensured that the containers - including those that are empty – are kept sealed. Above all, contact with water must be prevented as it reacts with Baymedix MP325 to form polyureas and carbon dioxide. During storage, sample withdrawal, transfer and processing of Baymedix MP325, the ingress of water in any form (damp containers, anhydrous solvents, moist air) must be prevented as otherwise the formation of carbon dioxide may cause a dangerous increase in pressure in the tanks and containers. Furthermore, the formation of polyureas in Baymedix MP325 may cause turbidity and possibly solid deposits which may then block filters, pumps and pipelines. Drums must not be emptied under pressure, but either by means of a pump or siphon or by pouring.This rules out processing direct from the drum under pressure.
Health and Safety Information
Disclaimer
General
The manner in which you use our products, technical assistance and information (whether verbal, written or by way of production evaluations), including any suggested formulations and recommendations, are beyond our control. Therefore, it is imperative that you test our products to determine suitability for your processing and intended uses. Your analysis must at least include testing to determine suitability from a technical, health, safety, and environmental and regulatory standpoint. Such testing has not necessarily been done by Covestro, and Covestro has not obtained any approvals or licenses for a particular use or application of the product.
Unless we otherwise agree in writing, all products are sold strictly pursuant to the terms of our standard conditions of sale which are available upon request.
All information and including technical assistance is given without warranty or guarantee and is subject to change without notice. It is expressly understood and agreed by you that you assume and hereby expressly release indemnify us and hold us harmless from all liability, in tort, contract or otherwise, incurred in connection with the use of our products, technical assistance, and information. Any statement or recommendation not contained herein is unauthorized and shall not bind us. Nothing herein shall be construed as a recommendation to use any product in conflict with any claim of any patent relative to any material or its use. No license is implied or in fact granted under the claims of any patent.
Medical Grades
All products for medical applications/Baymedix® products offered by Covestro are supplied under contract containing detailed product specifications and therefore the execution of an individual written supply contract is mandatory prior to any use of a medical applications/Baymedix® product, including but not limited to production of medical devices or medicinal products.
For more information, please refer to the Guidance on the use of Covestro products in Medical Applications:
Sample
Any samples provided by Covestro are for testing purposes only and not for commercial use.
Typical value
These values are typical values only. Unless explicitly agreed in written form, they do not constitute a binding material specification or warranted values
Contact
Please use our contact form or contact us directly by sending an e-mail to technical-datasheets@cx.covestro.com .
