Note: Ingredients listed on restricted chemical lists
EC/CAS
5124-30-1
Name of the chemical
4,4'-methylenedicyclohexyl diisocyanate
Concentration
95-100%
General Information
Revision date
2026-02-19
Product name
DESMODUR W
Chemical name
Aliphatic Diisocyanate
1.2.1 Relevant identified uses
Raw material for coatings, inks, adhesives, sealants, or elastomers in industrial applications
1.2.2. Uses advised against
Do-It-Yourself Applications, Drinking water applications
Icons in SDS
Company Information
company name
Covestro LLC
GHS Information
Signal word
Danger
Hazard Codes
Hazard statements (CLP)
H315, H317, H330, H334, H335
Hazard statements
Code
Statements
H315
Causes skin irritation
Section 2
SECTION 2: Hazards identification
GHS Classification Acute toxicity (Inhalation) Category 2 Skin irritation Category 2 Respiratory sensitisation Category 1 Skin sensitisation Category 1 Specific target organ toxicity - Category 3 (Respiratory system) single exposure
Signal word
Danger
Hazard statements
Causes skin irritation. May cause an allergic skin reaction. Fatal if inhaled. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause respiratory irritation.
Prevention
Do not breathe dust, mist, gas, vapors or spray. Wash skin and face thoroughly after handling. Use only outdoors or in a well-ventilated area. Contaminated work clothing must not be allowed out of the workplace. Wear protective gloves. In case of inadequate ventilation wear respiratory protection. The type of respiratory protection selected must comply with the requirements set forth in OSHA's Respiratory Protection Standard (29 CFR 1910.134) or regional standards. For additional details, see section 8 of the SDS.
Response
IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a doctor or emergency medical facility (i.e., 911). If skin irritation or rash occurs: Get medical attention. If experiencing respiratory symptoms: Call a doctor or emergency medical facility (i.e. 911). Take off contaminated clothing and wash it before reuse.
Storage
Store in a well-ventilated place. Store locked up. Keep container tightly closed.
Disposal
Dispose of contents and container in accordance with existing federal, state, and local environmental control laws.
2.1 Classification of the substance or mixture
Acute toxicity (Inhalation): Category 2 Skin irritation: Category 2 Respiratory sensitisation: Category 1 Skin sensitisation: Category 1 Specific target organ toxicity - Category 3 (Respiratory system) single exposure
