Molekula
1-isocyanato-1-[(1-isocyanato-1-cyclohexa-1,3,5-trienyl)methyl]cyclohexa-1,3,5-triene
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
1-isocyanato-1-[(1-isocyanato-1-cyclohexa-1,3,5-trienyl)methyl]cyclohexa-1,3,5-triene, commonly known as **methylene diphenyl diisocyanate (MDI)**, is a key industrial chemical primarily used in the production of polyurethane foams, adhesives, coatings, and elastomers. It serves as a versatile diisocyanate monomer essential for polymer synthesis. This chemical has a CAS number of 26447-40-5, with the molecular formula C15H10N2O2 and a molecular weight of 250.25 g/mol. It must be stored at -15 to -20°C and is classified with the signal word "Danger." Molekula supplies MDI from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Assay | ≥97.0% |
| Any other impurity | ≤3.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Flash Point | 202 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Light-yellow, fused solid |
| Odour | Odorless |
| Melting Point | 37 °C |
| Boiling Point | 313.9 °C |
| Density | 1.2 (relative, water = 1) |
| Solubility (other solvents) | Soluble in acetone, benzene, kerosene, and nitrobenzene |
| Vapour Pressure | 5.0 × 10⁻⁶ mmHg at 25 °C |
| Refractive Index | 1.5906 |
Source: PubChem CID 7570 (HSDB, The National Institute for Occupational Safety and Health (NIOSH), ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90002790 |
| CAS Number | 26447-40-5 |
| IUPAC Name | 1-isocyanato-4-[(4-isocyanatophenyl)methyl]benzene |
| EC Number | 202-966-0 |
| Molecular Formula | C15H10N2O2 |
| Molecular Weight | 250.25 |
| Exact Mass | 250.0742 |
| SMILES | C1=CC(=CC=C1CC2=CC=C(C=C2)N=C=O)N=C=O |
| InChIKey | UPMLOUAZCHDJJD-UHFFFAOYSA-N |
| InChI | InChI=1S/C15H10N2O2/c18-10-16-14-5-1-12(2-6-14)9-13-3-7-15(8-4-13)17-11-19/h1-8H,9H2 |
| PubChem CID | 7570 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29291080 |
| Tariff Code | 2929100090 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
Hazard statements
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H332 Harmful if inhaled
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H335 May cause respiratory irritation
- H351 Suspected of causing cancer
- H373 May cause damage to organs through prolonged or repeated exposure
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+350 IF ON SKIN: Gently wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 1,1'-Methylenebis(4-isocyanatobenzene)
- 4,4'-Diphenylmethane diisocyanate
- 4,4'-Methylenebis(phenyl isocyanate)
- 4,4'-Methylenediphenyl diisocyanate
- Bis(4-isocyanatophenyl)methane
- Desmodur 44
- Diphenylmethane diisocyanate
- Isonate
- Methylbisphenyl isocyanate
- p,p'-Diphenylmethane diisocyanate
Frequently asked questions
What is 1-isocyanato-1-[(1-isocyanato-1-cyclohexa-1,3,5-trienyl)methyl]cyclohexa-1,3,5-triene used for?
This compound, commonly known as **MDI (Methylene Diphenyl Diisocyanate)**, is primarily used in the production of polyurethane foams, coatings, adhesives, and elastomers.
What is the chemical formula and molecular weight?
The formula is **C₁₅H₁₀N₂O₂**, and the molecular weight is **250.25 g/mol**.
How should this product be stored?
Store at **-15 to -20°C** to maintain stability and prevent polymerization.
What grades or purities of this product does Molekula supply?
Molekula supplies **technical-grade MDI** suitable for industrial applications, meeting standard purity requirements for polyurethane manufacturing.
Can Molekula supply this product in bulk quantities?
Yes, Molekula can provide **bulk quantities** of MDI, with packaging options tailored to customer needs (e.g., drums, IBCs).
What documentation is provided with an order of this product?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS/SDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.