Our Factory
Heze Yonghui Composite Materials Co., Ltd. specializes in the production of high-performance, specialty amine-based chemical products such as MDA, DDM, MOCA, PACM, MACM, MDA-60, etc.
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![4,4-Diaminodiphenylmethane]()
4,4-DiaminodiphenylmethaneProduct name:4,4-Diaminodiphenylmethane ，view more
Other name:4,4'-Methylenedianiline
CAS:101-77-9
UN:2651
Purity:≥99.5%
Chemical formula: C13H14N2
Molecular weight:... -
![MDA-60(4,4-Methylenedianiline)]()
MDA-60(4,4-Methylenedianiline)Product name: MDA-60(4,4-Methylenedianiline)view more
Appearance: Pale yellow transparent liquid/semi-solid
Viscosity(40℃）: 3,000-5,000 mPa·s
Content of 4,4'-MDA: 55%-63% ... -
![DDM（Diaminodiphenylmethane）]()
DDM（Diaminodiphenylmethane）Product name: DDM（Diaminodiphenylmethane）view more
Appearance: Pale yellow solid
Content of 4,4'-Methylenedianiline: 65%-75%
Package: 25 kg/Bag
CAS NO.:101-77-9... -
![4,4-diaminodicyclohexylmethane]()
4,4-diaminodicyclohexylmethaneProduct name:4,4-diaminodicyclohexylmethaneview more
Other name:4,4’-Methylenebis(cyclohexylamine)
Bis(4-aminocyclohexyl)methane -
![H12MDA]()
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![4,4-Methylenebiscyclohexylamine]()
4,4-MethylenebiscyclohexylamineProduct name:4,4-Methylenebiscyclohexylamineview more
Other name:4,4’-Methylenebis(aminocyclohexane)
4,4’-Methylenedicyclohexylamine -
![3,3′-Dichlor-4,4′-diaminodiphenylmethan]()
3,3′-Dichlor-4,4′-diaminodiphenylmethanCAS NO : 101-14-4view more
EC NO : 202-918-9
Molecular Formula : C13H12Cl2N2
Molecular Weight：267.15400
Exact Mass：267.15
EC Number：202-918-9
HS... -
![4,4′-Methylendicyclohexanamine]()
4,4′-MethylendicyclohexanamineProduct name:4,4′-Methylendicyclohexanamineview more
Other name:(4,4′-Diaminodicyclohexyl)methane
Bis-(p-aminocyclohexyl)methane
CAS:1761-71-3
UN:2735 -
![MACM Polyurea Raw Material]()
MACM Polyurea Raw MaterialLooking for a high-quality MACM polyurea raw material that delivers real-world results? As a professional manufacturer, we don't just sell chemicals-we provide solutions that contractors, coating...view more -
![4,4′-Methylenedi-Aniline]()
4,4′-Methylenedi-Aniline4,4′-Methylenedi-Aniline appears as white to yellowish crystals at room temperature. As an important chemical industry intermediate, 4,4′-Methylenedi-Aniline is widely used in the production of...view more -
![MDA-100(4,4-Methylenedianiline)]()
MDA-100(4,4-Methylenedianiline)Product name: MDA-100(4，4-Methylenedianiline)view more
CAS NO.: 101-77-9
EINECS NO.:202-974-4 -
![4,4-Methylenedianiline]()
4,4-Methylenedianiline4,4-Methylenedianiline appears as white to yellowish crystals at room temperature. As an important chemical industry intermediate, 4,4-Methylenedianiline is widely used in the production of MDI...view more
Why Choose Us
Modern Laboratories
Our R&D center is equipped with advanced analytical tools (GC-MS, HPLC) and pilot-scale equipment, enabling formulation optimization for applications such as carbon fiber composites, oil pipeline coatings, and electronic potting adhesives.
Technical Partnerships
Long-term collaborations with top universities drive innovation. We have secured multiple patents in liquid DDM derivatives and high-temperature curing agents for PI/PEI insulating lacquers.
Certifications
ISO 9001/14001 certifications and REACH compliance reflect our commitment to quality. Our R&D team, consisting of over 10 members (30% with PhD or Master’s degrees), ensures continuous innovation.
Our Service Processes
Chemical Name: 4,4'-Diaminodiphenylmethane
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Common Alias: Methylenedianiline (MDA)
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Molecular Formula: C13H14N2
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Molecular Weight: 198.27 g/mol
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CAS Number: 101-77-9
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1.Appearance:
OAt room temperature: White to light yellow crystalline solid (may darken upon exposure to air).
OPure form: Colorless crystals.
2.Melting Point: 89-91°C
3.Boiling Point: 398-401°C (at atmospheric pressure)
4.Solubility:
OSlightly soluble in water (0.1 g/100 mL at 25°C).
OSoluble in organic solvents: Ethanol, ether, benzene, acetone.
5.Chemical Stability:
OStable under normal conditions but susceptible to oxidation in air, leading to color darkening.
OReacts with acids, acid chlorides, and anhydrides; forms salts with strong acids.
Applications
Polymer Industry
OEpoxy Resins: Cures epoxy resins, forming high-strength, heat-resistant composites for coatings, adhesives, and electrical insulation.
OPolyurethanes: Precursor for MDI (4,4'-diphenylmethane diisocyanate), a key component in polyurethane foams, elastomers, and plastics.
OPolyamides: Synthesizes polyamides (nylons) with improved mechanical properties.
Chemical Intermediates
OManufactures dyes, antioxidants, and agricultural chemicals (e.g., herbicides, fungicides).
OPrecursor for Schiff bases and other nitrogen-containing organic compounds.
Research and Development
OUsed in laboratory syntheses and as a standard for analytical methods (e.g., HPLC, GC).
1.Health Hazards:
OCarcinogenicity: Classified as a probable human carcinogen (Group 2B, IARC) due to links with bladder and lung cancers.
OIrritation: Causes skin and eye irritation; may trigger allergic dermatitis upon prolonged contact.
OToxicity: Lnhalation or ingestion can damage the respiratory system, liver, and kidneys.
2.Environmental Risks:
OPersists in soil and water; toxic to aquatic life.
OBiodegradation is slow, requiring proper waste disposal (e.g., incineration under controlled conditions).
- Store in a cool, dry, well-ventilated area, sealed in airtight containers to prevent oxidation.
- Avoid contact with moisture, strong acids, and oxidizing agents.
- Use personal protective equipment (PPE): gloves, goggles, and a respirator (N95 or higher) to prevent inhalation and skin exposure.
Our Certificate
FAQ
As one of the leading special chemicals manufacturers in China, we warmly welcome you to wholesale high-grade special chemicals for sale here from our factory. All chemicals are with high quality and competitive price.
