Note: Ingredients listed on restricted chemical lists
EC/CAS
101-68-8
Name of the chemical
4,4’-Methylenediphenyl diisocyanate
Concentration
N/A
General Information
Version
5.02
Revision date
2026-09-26
Product name
3M(TM) Urethane Structural Adhesive W1600, Part A
1.2.1 Relevant identified uses
Adhesive
supplier name
3M
Manufacturer Name
3M
Emergency telephone
1-800-364-3577, (651) 737-6501
Icons in SDS
Company Information
company name
3M
Hazard Codes
Hazard statements (CLP)
H315, H317, H319, H334, H335, H372
Hazard statements
Code
Statements
H315
Causes skin irritation
Section 2
SECTION 2: Hazards identification
Hazard classification Skin Corrosion/Irritation: Category 2 Serious Eye Damage/Irritation: Category 2A Respiratory Sensitizer: Category 1 Skin Sensitizer: Category 1 Specific Target Organ Toxicity (repeated exposure): Category 1 Specific Target Organ Toxicity (single exposure): Category 3
Hazard pictograms
Exclamation mark |Health Hazard |
Hazard statements
Causes skin irritation. Causes serious eye irritation. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause an allergic skin reaction. May cause respiratory irritation. Causes damage to organs through prolonged or repeated exposure: respiratory system.
Prevention
Do not breathe vapors. Wash exposed skin thoroughly after handling. Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Contaminated work clothing should not be allowed out of the workplace. Wear protective gloves and eye protection. In case of inadequate ventilation wear respiratory protection.
Response
IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Call a POISON CENTER or doctor if you feel unwell. IF INHALED: Remove person to fresh air and keep comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Get medical attention if you feel unwell. If eye irritation persists or if skin irritation or rash occurs: Get medical attention. If experiencing respiratory symptoms: Call a POISON CENTER or doctor. Take off contaminated clothing and wash it before reuse.
Storage
Store in a well-ventilated place. Keep container tightly closed. Store locked up.
Disposal
Dispose of contents and container in accordance with applicable local, regional, national, and international regulations.
Additional information
Persons previously sensitized to isocyanates may develop a cross-sensitization reaction to other isocyanates.
2.1 Classification of the substance or mixture
Skin Corrosion/Irritation: Category 2. Serious Eye Damage/Irritation: Category 2A. Respiratory Sensitizer: Category 1. Skin Sensitizer: Category 1. Specific Target Organ Toxicity (repeated exposure): Category 1. Specific Target Organ Toxicity (single exposure): Category 3. 2.2. Label elements Signal word Danger Symbols Exclamation mark |Health Hazard | Pictograms Hazard Statements Causes skin irritation. Causes serious eye irritation. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause an allergic skin reaction. May cause respiratory irritation. Causes damage to organs through prolonged or repeated exposure: respiratory system. Precautionary statements Prevention: Do not breathe vapors. Wash exposed skin thoroughly after handling. Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Contaminated work clothing should not be allowed out of the workplace. Wear protective gloves and eye protection. In case of inadequate ventilation wear respiratory protection. Response: IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Call a POISON CENTER or doctor if you feel unwell. IF INHALED: Remove person to fresh air and keep comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Get medical attention if you feel unwell. If eye irritation persists or if skin irritation or rash occurs: Get medical attention. If experiencing respiratory symptoms: Call a POISON CENTER or doctor. Take off contaminated clothing and wash it before reuse. Storage: Store in a well-ventilated place. Keep container tightly closed. Store locked up. Disposal: Dispose of contents and container in accordance with applicable local, regional, national, and international regulations. Supplemental Information: Persons previously sensitized to isocyanates may develop a cross-sensitization reaction to other isocyanates. SECTION 3: Composition/information on ingredients Ingredient C.A.S. No. % by Wt 4,4'-diphenylmethane diisocyanate 101-68-8 45 - 55 Trade Secret * diphenylmethanediisocyanate prepolymer 68424-09-9 15 - 40 poly(diphenylmethane-4,4'-diisocyanate) 25686-28-6