4,4'-Diphenylmethane Diisocyanate CAS#101-68-8
4,4'-Diphenylmethane diisocyanate (MDI) is widely used in the production of various polyurethane materials, including flexible and rigid foams, as well as paints, lacquers, adhesives, binding agents, synthetic rubbers, and elastomeric fibers.
4,4'-Diphenylmethane diisocyanate Chemical Properties
| Melting point | 38-44 °C |
| Boiling point | 392 °C |
| density | 1.19 |
| vapor pressure | 0.066 hPa (20 °C) |
| refractive index | 1.5906 (estimate) |
| Fp | 196 °C |
| storage temp. | -20°C |
| solubility | 2g/l (decomposition) |
| form | solid |
| color | White to Almost white |
| Specific Gravity | 1.18 |
| explosive limit | 0.4%(V) |
| Water Solubility | decomposes |
| FreezingPoint | 37℃ |
| Sensitive | Moisture Sensitive/Lachrymatory |
| BRN | 797662 |
| Dielectric constant | 10.0（Ambient） |
| Exposure limits | TLV-TWA 0.051 mg/m3 (0.005 ppm) (ACGIH and NIOSH); ceiling (air) 0.204 mg/m3 (0.02 ppm)/10 min (NIOSH and OSHA); IDLH 102 mg/m3 (10 ppm). |
| Stability: | Stable. Combustible. Incompatible with strong oxidizing agents. Reacts violently with alcohols. |
| 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 |
| InChIKey | UPMLOUAZCHDJJD-UHFFFAOYSA-N |
| SMILES | O=C=Nc1ccc(Cc2ccc(cc2)N=C=O)cc1 |
| CAS DataBase Reference | 101-68-8(CAS DataBase Reference) |
| NIST Chemistry Reference | Benzene, 1,1'-methylenebis[4-isocyanato-(101-68-8) |
| IARC | 3 (Vol. 19, Sup 7, 71) 1999 |
| EPA Substance Registry System | 4,4'-Methylenedi(phenyl isocyanate) (101-68-8) |
Safety Information
| Hazard Codes | Xn,T,C |
| Risk Statements | 42/43-36/37/38-20-48/20-40 |
| Safety Statements | 45-36/37-23 |
| RIDADR | 2206 |
| OEB | D |
| OEL | TWA: 0.05 mg/m3 (0.005 ppm), Ceiling: 0.2 mg/m3 (0.020 ppm) [10-minute] |
| WGK Germany | 1 |
| RTECS | NQ9350000 |
| Autoignition Temperature | >600 °C |
| Hazard Note | Toxic/Corrosive/Lachrymatory/Moisture Sensitive |
| TSCA | TSCA listed |
| HazardClass | 6.1 |
| PackingGroup | II |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Acute Tox. 4 Inhalation |
| Carc. 2 | |
| Eye Irrit. 2 | |
| Resp. Sens. 1 | |
| Skin Irrit. 2 | |
| Skin Sens. 1 | |
| STOT RE 2 Inhalation | |
| STOT SE 3 | |
| Hazardous Substances Data | 101-68-8(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rabbit > 9000 mg/kg |
| IDLA | 75 mg/m3 |
Product Application of 4,4'-Diphenylmethane Diisocyanate CAS#101-68-8
Diphenylmethane diisocyanate (MDI) is widely used in polyurethane coatings and foam production.
The polyurethane foam produced from this material is commonly applied in thermal insulation and cold insulation systems, building materials, automotive components, and ship parts.
It is also used in the manufacture of automotive interior blocks, cushioning materials, synthetic leather, non-foam polyurethane products, polyurethane elastic fibers, non-plastic elastomeric fibers, films, and adhesives, offering broad application potential across industrial and consumer sectors.
Company Profile
Nestled in Jinan, Shandong, Furuida (Jinan) Chemical Technology Co., Ltd. stands as a versatile industrial entity uniting chemical research, precision engineering, transnational trade, and holistic client care. Dedicated to premium fine chemical solutions, the enterprise champions integrity, standardized quality protocols, and enduring partnerships as its cornerstone principles. Technological innovation is embedded within routine production workflows to achieve tangible breakthroughs, underpinned by comprehensive quality governance across every manufacturing step. Through methodical, grounded practices, the company continually widens its global footprint, refines operational workflows, and elevates worldwide brand credibility.
The firm's enduring commercial strengths derive from its skilled workforce, endowed with rich import-export acumen and professional technical support expertise, alongside a robust international supply network ensuring consistent quality and rapid order fulfillment. With annual turnover surpassing RMB 600 million, Furuida has cultivated lasting strategic relationships with more than 5,000 industrial customers throughout Asia, Europe, Africa, and Oceania. This extensive global engagement has earned substantial industry recognition and a dominant position in the worldwide chemical sector.
Furuida offers a diverse portfolio spanning pharmaceutical intermediates, food additives, electroplating chemicals, water treatment formulations, dye auxiliaries, advanced functional materials, titanium compounds, metal salts, catalysts, and surfactants. These adaptable industrial inputs cater to a broad array of downstream fields, including drug production, electronics manufacturing, surface coatings, polymer processing, specialty chemicals, and environmental water treatment. Fueled by extensive product diversity and formidable overall strength, the organization supplies superior, economical chemical products along with customized one-stop industrial solutions for customers globally, continuously refining service approaches to align with shifting industry trends and market demands.
