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Chemical Datasheet
POLYMERIC DIPHENYLMETHANE DIISOCYANATE |
|
Chemical Identifiers
| CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
|
|
none
|
data unavailable
|
|
| NIOSH Pocket Guide |
International Chem Safety Card |
|
none
|
none
|
NFPA 704
data unavailable
General Description
Dark-brown liquid with a weak odor. Sinks in water. (USCG, 1999)
Hazards
Reactivity Alerts
Air & Water Reactions
Reacts with water slowly forming heavy scum and liberating carbon dioxide gas. Dangerous pressure can build up if container is sealed.
Fire Hazard
Behavior in Fire: Containers may explode. (USCG, 1999)
Health Hazard
Inhalation causes breathlessness, chest discomfort, and reduced pulmonary function; wheezing, cough, and sputum may also occur. Contact with liquid irritates eyes and skin. Ingestion causes irritation of mouth and stomach. (USCG, 1999)
Reactivity Profile
POLYMERIC DIPHENYLMETHANE DIISOCYANATE reacts with water slowly forming heavy scum and liberating carbon dioxide gas. Dangerous pressure can build up if container is sealed. Base-catalysed reactions of isocyanates with alcohols should be carried out in inert solvents. Such reactions in the absence of solvents often occur with explosive violence [Wischmeyer 1969].
Belongs to the Following Reactive Group(s)
- Isocyanates and Isothiocyanates
Potentially Incompatible Absorbents
Use caution: Liquids with this reactive group classification have been
known to react with the
absorbents
listed below.
- Cellulose-Based Absorbents
- Mineral-Based & Clay-Based Absorbents
- Dirt/Earth
Response Recommendations
Isolation and Evacuation
No information available.
Firefighting
Fire Extinguishing Agents: Dry chemical or carbon dioxide (USCG, 1999)
Non-Fire Response
No information available.
Protective Clothing
Air-line or organic canister mask; goggles or face shield; rubber gloves and other protective clothing to prevent contact with skin. (USCG, 1999)
DuPont Tychem® Suit Fabrics
Normalized Breakthrough Times (in Minutes)
| Chemical |
CAS Number |
State |
QS |
QC |
SL |
C3 |
TF |
TP |
RC |
TK |
RF |
| Polymethylene polyphenyle isocyanate (p-MDI) |
9016-87-9 |
Liquid |
|
>480 |
>480 |
>480 |
>480 |
>480 |
>480 |
>480 |
>480 |
Special Warning from DuPont: Tychem® and Tyvek® fabrics should not be
used around heat, flames, sparks or in potentially flammable or
explosive environments. Only...
(DuPont, 2023)
First Aid
Get medical attention at once following all exposures to this compound.
INHALATION: remove victim to fresh air; give artificial respiration if breathing has stopped; oxygen can be given by qualified personnel.
EYES: immediately wash with large amounts of water for at least 15 min.
SKIN: flush immediately with water, wipe off, treat with 30% isopropyl alcohol (rubbing alcohol), and wash with soap and water.
INGESTION: induce vomiting at least 3 times by giving warm salt water (one tablespoon of salt per cup); follow with a quart of milk and a mild carthartic such as milk of magnesia. (USCG, 1999)
Physical Properties
Flash Point:
425°F
(USCG, 1999)
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity:
1.2
at 68°F
(USCG, 1999)
- Denser than water; will sink
Boiling Point:
392°F
at 760 mmHg
(USCG, 1999)
Molecular Weight:
400
(approx.)
(USCG, 1999)
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH: data unavailable
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
| Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
| Polymethylene polyphenyl isocyanate; (Polymeric diphenylmethane diisocyanate) (9016-87-9)
|
0.15 mg/m3 |
3.6 mg/m3 |
22 mg/m3 |
(DOE, 2018)
Regulatory Information
EPA Consolidated List of Lists
| Regulatory Name |
CAS Number/
313 Category Code |
EPCRA 302
EHS TPQ |
EPCRA 304
EHS RQ |
CERCLA RQ |
EPCRA 313
TRI |
RCRA
Code |
CAA 112(r)
RMP TQ |
| Diisocyanates (includes only 20 chemicals) |
N120 |
|
|
|
313 |
|
|
| Polymeric diphenylmethane diisocyanate |
9016-87-9 |
|
|
|
313# |
|
|
(EPA List of Lists, 2022)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
- PAPI
- POLYMERIC DIPHENYLMETHANE DIISOCYANATE
- POLYMETHYLENE POLYPHENYL ISOCYANATE