⚠ DANGER: OSHA ceiling limit 0.02 ppm. Potent respiratory sensitizer — occupational asthma is a significant risk. Once sensitized, there is no cure and further workplace exposure is not possible. Emergency NIOSH IDLH is 2.5 ppm.
GHS Hazard Pictograms
☠ Acutely Toxic⚠ Harmful/Irritant❤️ Health Hazard🌊 Environmental
Hazard Statements (H-codes)
H227 – Combustible liquid
H302+H332 – Harmful if swallowed or inhaled
H315 – Causes skin irritation
H317 – May cause allergic skin reaction
H319 – Causes serious eye irritation
H334 – May cause allergy, asthma, or breathing difficulties
H335 – May cause respiratory irritation
H351 – Suspected of causing cancer
Precautionary Statements (P-codes)
P260 – Do not breathe vapour
P272 – Contaminated work clothing not out of workplace
P284 – Use respiratory protection
P342+P311 – If experiencing breathing difficulties: Call Poison Control
First Aid Measures (Section 4)
👁Eye Contact▼
Flush with water for 15 minutes. Seek immediate medical attention.
🖐Skin Contact▼
Wash with soap and water. Remove contaminated clothing. Report sensitization history.
🫁Inhalation▼
Remove to fresh air immediately. Seek emergency care. Isocyanate asthma attacks can be life-threatening.
🫦Ingestion▼
Call Poison Control (1-800-222-1222). Seek medical attention.
Storage & Handling
🔒 Storage & Handling: Cool, dry area in sealed containers away from moisture, amines, and alcohols. Secondary containment. Moisture causes CO2 evolution.
PPE Requirements
Full-face supplied-air respirator
Chemical splash goggles
Butyl rubber gloves
Chemical-resistant coveralls
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