Monomer Acid C18 Fatty Acid CAS 61788-89-4
- CAS: 61788-89-4
- Synonyms: Monomeric Fatty Acid, C18 Fatty Acid, Synthetic Fatty Acid
- EINECS No.: 500-148-0
- Molecular Formula: C18H34O2
- Grade: Grade I
- Packaging: 190 kg/drum or liquid bag (flexitank)
Tree Chem manufactures Monomer Acid CAS 61788-89-4 under controlled refining and distillation conditions to achieve low moisture, low color, and high purity. The product exhibits excellent reactivity, smooth flow properties, and good solubility with most organic solvents.
It serves as an important raw material in various industries such as polymer synthesis, surface coatings, and chemical intermediates. For purchase or formulation consultation, please contact summer@cntreechem.com.
Specification
Basic Information
| Parameter | Value |
| CAS Number | 61788-89-4 |
| Synonyms | Monomeric Fatty Acid, C18 Fatty Acid, Synthetic Fatty Acid |
| EINECS No. | 500-148-0 |
| Molecular Formula | C18H34O2 |
| Grade | Grade I |
| Packaging | 190 kg/drum or liquid bag (flexitank) |
Technical Specification
| Item | Grade I |
| Acid Value (mgKOH/g) | 175–195 |
| Saponification Value (mgKOH/g) | 185–205 |
| Iodine Value (gI₂/100g) | 55–80 |
| Solidifying Point (°C) | 29–39 |
| Color (Gardner) | ≤3 |
| Moisture (%) | ≤0.5 |
Applications
Lubricant Industry
- Monomer acid plays an essential role in the production of advanced lubricants, where it acts as a key raw material for the synthesis of ester-based oils. Its controlled carbon chain structure offers an ideal balance between fluidity and thermal stability, providing consistent viscosity performance across wide temperature ranges. This makes monomer acid suitable for use in automotive engines, hydraulic fluids, and turbine lubricants.
- When reacted with polyols such as pentaerythritol or neopentyl glycol, monomer acid forms high-performance esters with low volatility, strong film strength, and excellent lubrication efficiency. These esters improve oxidative resistance and reduce carbon residue during long-term operation. As a result, lubricants made from monomer acid are widely applied in heavy-duty machinery and aviation systems requiring high reliability and endurance.
Coatings and Resins
- Monomer acid serves as an important building block in alkyd, epoxy, and polyester resin production. It improves film flexibility, adhesion, and resistance to water, alkalis, and chemicals. Coatings based on monomer acid show enhanced leveling, gloss retention, and durability, making them suitable for industrial and architectural applications.
- In epoxy formulations, monomer acid functions as a reactive modifier that reduces brittleness and enhances impact strength. It can also help balance hardness and elasticity in the cured film. In alkyd and polyester systems, monomer acid enables excellent pigment dispersion and contributes to the development of low-VOC coatings.
Adhesives and Sealants
- In adhesives, monomer acid is used as a precursor for polyamide and polyester adhesives with outstanding cohesive strength and flexibility. It enhances bonding to metal, plastic, and composite substrates, ensuring long-lasting adhesion even under heat and moisture.
- For sealants, monomer acid contributes to improved elasticity and thermal stability. Its balanced hydrophobicity allows sealants to maintain flexibility over a wide temperature range and resist chemical degradation, making it ideal for construction, electronics, and automotive uses.
Cosmetics and Personal Care
- Monomer acid and its derivatives are widely used in cosmetics as emollients and texture enhancers. They impart smoothness and improve the spreadability of lotions, creams, and body oils. The esters derived from monomer acid provide a lightweight, non-greasy feel and enhance moisture retention on the skin.
- In hair care products, monomer acid derivatives function as conditioning agents that help restore shine and softness. They can also stabilize emulsions and improve product consistency in both rinse-off and leave-on formulations. Their biodegradability and mildness make them suitable for eco-conscious cosmetic brands.
Polymers and Engineering Materials
- In the polymer industry, monomer acid acts as a reactive intermediate in the synthesis of specialty polyamides, polyesters, and polyurethanes. It enhances elasticity, impact resistance, and flexibility in high-performance plastics used in automotive, electrical, and industrial applications.
- Monomer acid is also used as a compatibilizer or plasticizer to improve the processability of polymer systems. It provides dimensional stability, chemical resistance, and low moisture absorption, which are critical for engineering-grade materials.
Emerging Applications
- With increasing demand for bio-based materials, monomer acid is being used to develop sustainable lubricants, coatings, and adhesives. It offers high purity, excellent reactivity, and compatibility with renewable resources. In addition, research is exploring its role in new-generation polymers, biodegradable plastics, and 3D printing resins, opening opportunities for its use in advanced manufacturing technologies.
Storage & Handling
- Store in a cool, dry, and well-ventilated environment away from heat sources.
- Keep containers tightly sealed to prevent contamination.
- Avoid exposure to direct sunlight or strong oxidizers.
- Maintain clean and dry transfer equipment during handling.
- Use proper grounding to avoid static accumulation.
Usage Notice
- Handle under standard industrial hygiene practices.
- Avoid moisture contact during transfer and storage.
- Dispose of residues in accordance with local environmental regulations.
- Use proper protective equipment during bulk operation.
- Synthetic lubricant formulation: monomer acid 40%, trimethylolpropane 25%, pentaerythritol 20%, and antioxidant 15%; monomer acid enhances oxidation stability and ensures low volatility under high temperature.
- Alkyd coating formulation: monomer acid 50%, glycerol 20%, phthalic anhydride 15%, and solvent 15%; monomer acid improves gloss, flexibility, and resistance to yellowing.
- Epoxy resin modification: bisphenol A epoxy 55%, monomer acid 25%, curing accelerator 10%, and pigment 10%; monomer acid reduces brittleness and enhances adhesion of the cured film.
- Adhesive formulation: monomer acid 35%, caprolactam 30%, ethylenediamine 20%, and stabilizer 15%; monomer acid provides better bonding performance and elasticity.
- Body lotion formulation: monomer acid ester 5%, cetyl alcohol 3%, glycerin 4%, and deionized water 88%; monomer acid ester serves as an emollient that improves skin softness and moisturizing feel.
- Biopolymer formulation: monomer acid 30%, lactic acid 40%, and glycerol 30%; monomer acid acts as a renewable modifier, enhancing the flexibility and degradation rate of bioplastics.
Packaging
- 190 kg/drum or liquid bag (flexitank)
- Custom packaging available upon customer request
