Polymethylene polyphenyl polyisocyanate Property

Boiling point:

392 °C5 mm Hg

Density 

1.2 g/mL at 25 °C(lit.)

vapor density 

8.6 (vs air)

refractive index 

n20/D 1.634

Flash point:

>230 °F

storage temp. 

Refrigerator, Under inert atmosphere

solubility 

DMSO (Sparingly), Ethyl Acetate (Slightly), Methanol (Soluble)

form 

Oil

color 

Yellow to Orange

Stability:

Stable. Incompatible with strong oxidizing agents, alcohols. May decompose in moist air, or on contact with water.

InChI

InChI=1S/C7H5NO.CH2O/c9-6-8-7-4-2-1-3-5-7;1-2/h1-5H;1H2

InChIKey

JTEOXXUIKUHXLD-UHFFFAOYSA-N

SMILES

O=C=NC1C([H])=C([H])C([H])=C([H])C=1[H].O=C([H])[H]

IARC

3 (Vol. 19, Sup 7) 1987

EPA Substance Registry System

Polymeric diphenylmethane diisocyanate (9016-87-9)

Safety

Hazard Codes 

Xn,T+,T,F

Risk Statements 

20-36/37/38-42-42/43-26-22-39/23/24/25-23/24/25-11-20/21/22

Safety Statements 

26-28-38-45-36/37-23-16-7-36

WGK Germany 

3

RTECS 

TR0350000

Hazardous Substances Data

9016-87-9(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H315Causes skin irritation

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H330Fatal if inhaled

H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

H335May cause respiratory irritation

H351Suspected of causing cancer

H373May cause damage to organs through prolonged or repeated exposure

Precautionary statements

P202Do not handle until all safety precautions have been read and understood.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Polymethylene polyphenyl polyisocyanate Chemical Properties,Usage,Production

Description

Polymethylene polyphenyl polyisocyanate is a chain extender and a cross-linker that is used in the formation of a polyurethane system by forming amide linkages (?NCO).

Chemical Properties

liquid

Uses

Poly[methylene(polyp?henyl Isocyanate)?] is an engineering polymer used in the synthesis of highly resiliant polyurethane foams with flame retardancy.Environmental toxin on US EPA Toxic Release Inventory list (TRI) list.

Definition

A polymer of diphenylmethane-4,4′-diisocyanate.

Application

Polymethylene polyphenyl polyisocyanate can be used as a cross-linker to DNA and CTMA based films for the fabrication of biomaterials for organic electronic devices. It can be used in the formation of polyurethane based materials for non-linear optical applications.

General Description

Dark-brown liquid with a weak odor. Sinks in water.

Air & Water Reactions

Reacts with water slowly forming heavy scum and liberating carbon dioxide gas. Dangerous pressure can build up if container is sealed.

Reactivity Profile

Polymethylene polyphenyl polyisocyanate 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].

Hazard

Questionable carcinogen.

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.

Fire Hazard

Behavior in Fire: Containers may explode.

Safety Profile

Moderately toxic by ingestion. Mildly toxic by inhalation. Questionable carcinogen with experimental neoplastigenic data by implant route. When heated to decomposition it emits toxic fumes of NOx.