3-Trimethoxysilyl propyl urea(CAS#23843-64-3)
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S39 - Wear eye / face protection. |
| WGK Germany | - |
| TSCA | Yes |
| HS Code | 29319090 |
Introduction
3-Ureapropyltrimethoxysilane is an organosilicone compound. It has the following properties:1. Appearance: colorless or yellowish liquid.2. Solubility: Soluble in organic solvents such as alcohols, ethers, and aromatic hydrocarbons.3. Stability: Stable at room temperature but may react when encountering strong acids, alkalis, and oxidizing agents.The main uses of 3-ureapropyltrimethoxysilane include:1. Surface Treatment Agent: It can be used as a surface coating for glass, ceramics, metals, and other materials to improve its wear resistance and corrosion resistance.2. Additives: It can be used to prepare resins, rubber, coatings, and other materials to improve their wettability and weather resistance.3. Oilfield auxiliaries: can be used as enhancers, wax inhibitors, and amendments in oil extraction processes.The method for preparing 3-ureapropyltrimethoxysilane can be carried out by reacting silane trimethanol and urea or urea at appropriate temperatures and reaction conditions.When using 3-ureapropyltrimethoxysilane, the following safety information should be followed:1. Avoid direct contact: Personal protective equipment such as gloves and protective eyewear should be worn to avoid skin contact and inhalation of its vapors.2. Good ventilation: When using or handling 3-ureapropyltrimethoxysilane, maintain a well-ventilated working environment to avoid vapor accumulation.3. Storage Note: It should be stored in a cool, dry place away from fire and oxidizing agents.
Application
3-Trimethoxysilyl propyl urea (CAS 23843-64-3) is a bifunctional organosilane coupling agent containing both a urea group and hydrolyzable trimethoxysilyl groups. It is widely used to improve adhesion between inorganic substrates (such as glass, metals, silica, and minerals) and organic polymers (including epoxies, polyurethanes, acrylics, and polyamides). The urea functionality provides excellent reactivity with isocyanates, carboxylic acids, and hydroxyl groups, while the trimethoxysilyl group condenses with surface hydroxyls to form durable covalent bonds. This product is particularly valuable in sealants, adhesives, coatings, and composite materials, where it enhances moisture resistance, mechanical strength, and long-term durability. It also serves as a surface modifier for fillers and pigments, improving dispersion and compatibility in polymer matrices. In the electronics industry, it is used for encapsulants and underfill adhesives. Additionally, it finds applications in fiberglass sizing, rubber compounding, and wood treatment. Xinchem offers custom synthesis, custom chemical synthesis, and contract manufacturing of high-purity 3-trimethoxysilyl propyl urea with consistent quality and flexible scaling from R&D to commercial volumes. Contact us today for a competitive quote and reliable global supply.
