Pure MDI (Monomeric MDI, 4,4'-Methylenediphenyl Diisocyanate) is a high‑purity, reactive aromatic diisocyanate. It features low volatility, excellent mechanical performance, high bonding strength and stable chemical activity. It is a core raw material for producing high‑performance polyurethane elastomers, coatings, adhesives and rigid foams.

PRODUCT PROPERTIES

Item	Details
Common Name	Pure MDI / Monomeric MDI / 4,4'-MDI
CAS Number	101-68-8
Melting Point	38 – 42 °C
Density	1.19 g/cm³ (50 °C)
Physical Form	White or light yellow crystalline solid; molten transparent liquid after heating
Main Applications	Polyurethane elastomers, PU sealants, high‑hardness foams, waterproof coatings, shoe materials, automotive parts, insulation materials, composite adhesives, spandex raw materials
InChI	InChI=1S/C15H10N2O2/c18-16-14-5-1-12(2-6-14)9-13-3-7-15(4-8-13)17-11-19/h1-8H,9H2
InChIKey	UOKQRUTZRDVMXP-UHFFFAOYSA-N
SMILES	O=C=Nc1ccc(Cc2ccc(N=C=O)cc2)cc1
EINECS Number	202-910-6
EPA Chemical Information	EPA Substance Registry: DTXSID6024171; Respiratory irritant, sensitizer; controlled industrial chemical; requires enclosed operation, ventilation and personal protective equipment; restricted emission standards
Product Uses	Industrial heavy‑duty elastomer production, building waterproof PU coatings, cold storage rigid foam insulation, automobile light weighting components, bridge expansion sealants, synthetic leather base materials, electronic potting adhesive raw materials, solar panel sealing systems

PRODUCT USES

1 High reactivity and stable curing effect

2 Lower volatility compared with TDI, safer operation

3 Excellent abrasion, oil and ageing resistance

4 High mechanical strength and good low‑temperature toughness

5 Suitable for food‑grade, automotive and environmental friendly PU formulas

ABOUT US

Shandong Hualu Hengsheng Chemical Co., Ltd. is the core enterprise of Hualu Group's chemical business, with a total output of 60 million tons and over 3,000 employees. The company's products cover ten major areas, including new energy and new materials, chemical fertilizers, organic amines, acetic acid and its derivatives, polyols, synthetic resins, polyurethane, fragrances and flavors, additives and catalysts, and inorganic chemicals, totaling over 100 products.

PACKAGING AND TRANSPORTATION

Our company offers diversified, standardized, and customized packaging services for products. All packaging strictly complies with usage and transportation safety regulations. We support various formats such as standard bags, drums, and ton bags, and can flexibly adjust specifications, materials, and packaging methods according to customer needs to meet different usage scenarios such as warehousing, transportation, and export. Our products are safe, reliable, convenient, and practical.

FAQ

Q: Do you provide technical data and usage guidance?

A: Product manuals, technical parameters, MSDS and other documents are provided, together with professional pre-sales technical consultation and application guidance.

Q: Can you provide samples?

A: Samples are available for some products. Please consult customer service for specific application, quantity and cost.

Q: What should I do if the packaging is damaged upon receipt?

A: Please inspect goods upon receipt. If damage or leakage is found, provide photos for verification and we will handle it promptly.

Q: Do you support export and provide customs clearance documents?

A: Export packaging is supported. Customs clearance documents such as MSDS, packing list and commercial invoice are available to assist with cross-border logistics.

Q: How long will it take to deliver after ordering?

A: Regular in-stock items will be shipped within 1–3 working days. For customized packaging or special orders, delivery time shall be negotiated by both parties.

Q: What is the MOQ of your products?

A: Small-batch samples and large-volume orders are both supported. Specific MOQ can be negotiated based on product model and packaging type.

Q: Is transportation safe and compliant?

A: Transportation is carried out in strict accordance with regulations for general or dangerous chemicals, with qualified logistics and protective measures to ensure full-process safety.

Q: How to store chemical products properly?

A: Store in a cool, dry and ventilated area, away from fire, heat and strong corrosive substances. Store by category to avoid mixed storage risks.

Q: How is product quality guaranteed?

A: Products are produced and tested in strict accordance with industry standards. Quality inspection reports and certificates are available to ensure stable and reliable quality.

Q: Do you support customized packaging?

A: Customization is available. We can customize size, material, label and sealing method according to customer requirements for different storage, transportation and export scenarios.

Q: Is the packaging compliant with transportation and export safety requirements?

A: All packaging complies with safety regulations for storage, transportation and export, with qualified sealing and firmness, suitable for land, sea and other logistics scenarios.

Q: What types of packaging do you provide?

A: We provide regular packaging such as bags, drums and ton bags, as well as standardized and customized packaging. Specifications, materials and sealing methods can be adjusted flexibly according to product characteristics.

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