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Jump to: navigation, s Methylene diphenyl diisocyanate, most often abbreviated as MDI, is an aromatic diisocyanate. It exists in three isomers, 2,2'-MDI, 2,4'-MDI, and 4,4'-MDI. The 4,4' isomer is most practically useful, and is also known as Pure MDI. MDI is reacted with a polyol in the manufacture of polyurethane. It is the most produced diisocyanate, accounting for 61.3% of the global market in the year 2000.[1] earch

{| ! style="background: rgb(248, 234, 186) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial" colspan="2" | 4,4'-methylene diphenyl diisocyanate |} IUPAC name 1-isocyanato-4-

[(4-isocyanatophenyl)methyl]

benzene Other names Pure MDI

4,4'-methylene diphenyl

diisocyanate

4,4'-diphenylmethane

diisocyanate {| ! style="background: rgb(248, 234, 186) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial" colspan="2" | Identifiers |} CAS number 101-68-8 RTECS number NQ9350000 SMILES O=C=NC(C=C2)=CC=C2C

C1=CC=C(N=C=O)C=C1 {| ! style="background: rgb(248, 234, 186) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial" colspan="2" | Properties |} Molecular formula C15H10N2O2 Molar mass 250.25 g/mol Appearance white or pale yellow solid Density 1.230 g/cm3, solid Melting point 40 °C (313 K) Boiling point 314 °C (587 K) Solubility in water Reacts {| ! style="background: rgb(248, 234, 186) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial" colspan="2" | Hazards |} EU classification Harmful (Xn) R-phrases R20, R36/37/38, R42/43 S-phrases (S1/2), S23, S36/37, S45 Flash point 212-214 °C (Cleveland open cup) {| ! style="background: rgb(248, 234, 186) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial" colspan="2" | Related Compounds |} Related Isocyanates Toluene diisocyanate

Naphthalene diisocyanate Related compounds Polyurethane Except where noted otherwise, data are given for

materials in their standard state

(at 25 °C, 100 kPa)

Infobox disclaimer and references Methylene diphenyl diisocyanate, most often abbreviated as MDI, is an aromatic diisocyanate. It exists in three isomers, 2,2'-MDI, 2,4'-MDI, and 4,4'-MDI. The 4,4' isomer is most practically useful, and is also known as Pure MDI. MDI is reacted with a polyol in the manufacture of polyurethane. It is the most produced diisocyanate, accounting for 61.3% of the global market in the year 2000.[1]

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Related Questions

What is Diphenylmethane-4.4 Diisocyanate?

Diphenylmethane-4,4'-diisocyanate (MDI) is an organic compound that belongs to the isocyanate family, characterized by the presence of two isocyanate functional groups attached to a diphenylmethane structure. It is primarily used in the production of polyurethanes, which are versatile materials employed in various applications such as foams, coatings, adhesives, and elastomers. MDI is known for its excellent mechanical properties and durability, making it valuable in industries like construction, automotive, and furniture manufacturing. However, it is also a hazardous substance that requires careful handling due to its potential health risks.


Is diphenylmethane a liquid or solid at room temperature?

Diphenylmethane is a liquid over 22 oC.


Is diphenylmethane solid or liquid at room temperature?

Diphenylmethane is a liquid over 22 oC.


methylene diphenyl diisocyanate manufacturing process?

Methylene diphenyl diisocyanate, often abbreviated as MDI, is known as an aromatic diisocyanate.


Which has high resonance energy 'naphthalene or Diphenylmethane'?

Naphthalene has higher resonance energy compared to diphenylmethane, as naphthalene has a more extensive delocalization of electrons due to its two benzene rings being fused together. Diphenylmethane, on the other hand, has less delocalization due to the presence of a saturated carbon in the molecule.


Are toluene diisocyanate and hexamethylene diisocyanate hazardous air pollutants or haps as per the us-epa?

Yes


What is the hs code of toluene diisocyanate?

The Harmonized System (HS) code for toluene diisocyanate is 2929.10.00.


Can you use diisocyanate in swimming pools?

yes u can


What is diphenymethane?

Diphenylmethane is a chemical compound consisting of two phenyl groups attached to a methane backbone. It is used as an intermediate in the production of various organic compounds and polymers. Diphenylmethane can also act as a heat transfer fluid at high temperatures.


What has the author Howard E Momberg written?

Howard E. Momberg has written: 'A comparison of two methods for the determination of toluene diisocyanate in air' -- subject(s): Toluene 2,4-Diisocyanate, Analysis


Is diphenmethsnr solid at room temp?

If you think to diphenylmethane this compound is a solid under 25 oC.


How do you pronounce diisocyanate?

It is pronounced as "dye-uh-so-sigh-uhn-ate."