Methylenediphenyl diisocyanate (EC: 247-714-0)
Skull and Crossbones
Exclamation Mark
Health Hazard
Precautionary Statements
| Code | Statement |
|---|---|
P203 |
Obtain, read and follow all safety instructions before use. |
P233 |
Keep container tightly closed. |
P260 |
Do not breathe dust/fume/gas/mist/vapors/spray. |
P261 |
Avoid breathing dust/fume/gas/mist/vapors/spray. |
P264 |
Wash hands [and ...] thoroughly after handling. |
P264+P265 |
Wash hands [and ...] thoroughly after handling. Do not touch eyes. |
P271 |
Use only outdoors or in a well-ventilated area. |
P272 |
Contaminated work clothing should not be allowed out of the workplace. |
P280 |
Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/... |
P284 |
[In case of inadequate ventilation] Wear respiratory protection. |
P302+P352 |
IF ON SKIN: wash with plenty of water/... |
P304+P340 |
IF INHALED: Remove person to fresh air and keep comfortable for breathing. |
P305+P351+P338 |
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do - continue rinsing. |
P316 |
Get emergency medical help immediately. |
P317 |
Get emergency medical help. |
P318 |
if exposed or concerned, get medical advice. |
P319 |
Get medical help if you feel unwell. |
P320 |
Specific treatment is urgent (see ... on this label). |
P321 |
Specific treatment (see information on this label and safety datasheet)). |
P332+P317 |
If skin irritation occurs: Get medical help. |
P333+P317 |
If skin irritation or rash occurs: Get medical help. |
P337+P317 |
If eye irritation persists: Get medical help. |
P342+P316 |
If experiencing respiratory symptoms: Get emergence medical help immediately. |
P362+P364 |
Take off contaminated clothing and wash it before reuse. |
P403 |
Store in a well-ventilated place. |
P403+P233 |
Store in a well-ventilated place. Keep container tightly closed. |
P405 |
Store locked up. |
P501 |
Dispose of contents/container to ... |
Exposure Limits
| NIOSH REL | 0.05 mg-m3 (Ceiling: 0.2 mg-m3) |
| NIOSH IDLH | 75 mg-m3 |
| Skin Notation | Yes — can be absorbed through skin |
Physical Properties
White to light-yellow, odorless flakes.
| Boiling Point | 597°F |
| Flash Point | 390°F |
| Vapor Pressure | 0.000005 mmHg at 77°F |
| Specific Gravity | 1.23 (Solid at 77°F) 1.19 (Liquid at 122°F) |
NFPA 704 Diamond
1
2
0
Health
Fire
Reactivity
Target Organs
eye and throat irritation, liver and CNS damage
Synonyms
4,4-diphenylmethane diisocyanate; MDI; 4,4-diisocyanadiphenyl-methane; methylenebis(4-phenylisocyanate); methylene bis(phenyl isocyanate); methylene di-p-phenylene ester of isocyanic acid
Data Sources
- GHS Classification: PubChem CID 7570
- NIOSH REL/IDLH: NIOSH Pocket Guide
Disclaimer: This information is compiled from public regulatory databases for reference only. It does not replace the manufacturer's Safety Data Sheet (SDS). Always consult the official SDS for your specific product before handling chemicals.
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