Polymethylene polyphenyl polyisocyanate

Basic Information

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CAS Number

9016-87-9

Molecular Formula

C8H7NO2

Molecular Weight

149.15 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Basic Physical Properties

Boiling Point

392 °C5 mm Hg

Density

1.2 g/mL at 25 °C

Flash Point

>230 °F

Refractive Index

n20/D 1.634

SMILES

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C=O.C1=CC=C(C=C1)N=C=O

InChI

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

InChIKey

JTEOXXUIKUHXLD-UHFFFAOYSA-N

LogP

1.4689999999999999

Topological Polar Surface Area

46.5 Å²

Hydrogen Bond Donor/Acceptor

0 / 3

Complexity

123

Safety Information

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Stability

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

Synonyms & References

English

SCHEMBL5622417
9016-87-9
Formaldehyde;isocyanatobenzene
CID 16212386
Polymethylene polyphenyl polyisocyanate
PMDI
POLYMETHYLENE POLYPHENYL ISOCYANATE, MOL WT 350-380
1,6-Hexanediamine,polymer with N,N'''-1,6-hexanediylbis(N'-cyanoguanidine),hydrochloride
2,2'-hexane-1,6-diylbis(1-cyanoguanidine)-hexane-1,6-diamine hydrochloride(1:1:1)
N,N'''-1,6-Hexanediylbis(N'-cyanoguanidine),hexamethylenediamine polymer,hydrochloride
Poly(hexamethylenebicyanoguanide-hexamethylenediamine) hydrochloride
polymeric biguanidin hydrochloride
polymeric diisocyanatodiphenylmethane
4,4'-Diphenylmethane diisocyanate
Diphenylmethane diisocyanate
Bis(4-isocyanatophenyl)methane
Isonate
p,p'-Diphenylmethane diisocyanate
1,1'-Methylenebis(4-isocyanatobenzene)
Methylbisphenyl isocyanate
4,4'-Methylenediphenyl diisocyanate
Methylene bisphenyl isocyanate
4,4'-Diisocyanatodiphenylmethane
Methylene diphenyl diisocyanate
4,4'-Methylenebis(phenyl isocyanate)
Bis(p-isocyanatophenyl)methane
Diphenylmethyl diisocyanate
Caradate 30
Desmodur 44
Nacconate 300
Bis(1,4-isocyanatopheny

Customs Code

3909301000

FAQ

What are the physical and chemical properties of Polymethylene polyphenyl polyisocyanate (CAS: 9016-87-9)?

Polymethylene polyphenyl polyisocyanate (CAS: 9016-87-9) is a solid at room temperature, with a crystalline form. It has a high molecular weight, typically ranging from 2000 to 4000. The compound is slightly soluble in organic solvents like toluene and ethyl acetate. It is highly reactive due to the presence of isocyanate groups, which makes it suitable for use in various polymer synthesis reactions. Its reactivity allows for the formation of stable urethane and urea linkages with various polyols.

How is Polymethylene polyphenyl polyisocyanate (CAS: 9016-87-9) typically synthesized?

Polymethylene polyphenyl polyisocyanate (CAS: 9016-87-9) is synthesized through a two-step process. First, phenylene isocyanate is polymerized using a polyphenyl carbonate as a chain extender. This step involves the use of organometallic catalysts such as tin(II) octoate. The second step is the polymerization of the intermediate product, which typically requires high vacuum and elevated temperatures. The yield and selectivity of this process can be improved by optimizing reaction conditions and catalysts.

What industries use Polymethylene polyphenyl polyisocyanate (CAS: 9016-87-9)?

Polymethylene polyphenyl polyisocyanate (CAS: 9016-87-9) is widely used in various industries. It is a critical component in the manufacturing of polyurethane coatings, elastomers, and foams. Its applications extend to the automotive industry for interior and exterior parts, the construction sector for insulation and sealants, and the footwear industry for sole adhesives. Additionally, it is used in the production of polyurethane adhesives and in the development of advanced materials for electronics and sensors.

What precautions should be taken when handling Polymethylene polyphenyl polyisocyanate (CAS: 9016-87-9)?

When handling Polymethylene polyphenyl polyisocyanate (CAS: 9016-87-9), it is essential to follow strict safety protocols. Use personal protective equipment (PPE) such as gloves, goggles, and a respirator. Work in a well-ventilated area or use a fume hood to minimize exposure to the toxic and reactive compound. Spills should be cleaned up immediately using absorbent materials and disposed of according to local regulations. Always consult the Safety Data Sheet (SDS) for detailed handling and storage instructions.