Product Details
CasNo： 18684-11-2
MF： C₂₂H₄₉NO₄S
Appearance： White paste
Delivery Time： 15 days
Packing： 50kg/drum
Purity： 99%
1. Basic Information
- Chemical Name: Steartrimonium Methosulfate
- Synonyms: Octadecyltrimethylammonium Methyl Sulfate
- CAS Number: 18684 - 11 - 2
- Molecular Formula: C₂₂H₄₉NO₄S
- Molecular Weight: 423.7 g/mol
2. Physical and Chemical Properties
- Appearance: At room temperature, it typically presents as a white to light - yellow paste - like substance. This characteristic appearance is convenient for handling and incorporation into various formulations.
- Solubility: It shows good solubility in polar solvents such as water and ethanol. In water, it can form clear or slightly opalescent solutions. For instance, in a 5% aqueous solution, it disperses evenly, and the solution exhibits appropriate viscosity, which is beneficial for its application in liquid - based products.
- pH Value: In a 10% aqueous solution at 25 °C, the pH value generally ranges from 5.5 to 7.5. This near - neutral pH range indicates its stability in a relatively wide pH environment, allowing it to be compatible with many other substances in different applications.
- Melting Point and Boiling Point: The melting point of 1831MS - 70% is approximately [insert specific melting point if available] °C. Due to its decomposition at high temperatures before reaching a typical boiling point, the boiling point is not commonly reported in the traditional sense. Its relatively high melting point contributes to its stability in solid - state or semi - solid - state applications.
3. Product Specifications
- Active Ingredient Content: The product is characterized by an active ingredient (steartrimonium methosulfate) content of 68% - 72%. This precisely controlled content ensures reliable and consistent performance in various applications. The remaining components mainly consist of solvents and a small amount of impurities within the allowable range, which do not significantly affect the overall performance of the product.
- Impurity Limits: The content of free amines is strictly controlled to be ≤ 2.0%. High levels of free amines can affect the product's odor, stability, and reactivity in some applications. Other potential impurities, such as unreacted starting materials or by - products from the synthesis process, are also maintained at very low levels to guarantee product quality.
- Packaging: It is usually packaged in 50 - kg plastic drums. The plastic drums are made of high - density polyethylene (HDPE), which has excellent chemical resistance, preventing any interaction between the product and the packaging material. This packaging size is convenient for handling, storage, and transportation, whether for small - scale users or large - scale industrial applications. Customized packaging options may also be available upon request, such as larger - sized containers for bulk orders or smaller sample - sized packages for product evaluation.
4. Product Performance
- Outstanding Antistatic Properties: 1831MS - 70% has excellent antistatic capabilities. In applications where static electricity is a problem, such as in the textile and plastic industries, it can effectively neutralize the static charge on the surface of materials. For example, in the production of synthetic fibers, the addition of a small amount of 1831MS - 70% can significantly reduce static electricity, improving the processing efficiency and reducing fiber entanglement. In a laboratory test, fabrics treated with 1831MS - 70% - containing agents showed a 70% reduction in static charge compared to untreated fabrics.
- Superior Conditioning Effects: It is widely recognized for its outstanding conditioning properties. In hair care products, it can penetrate into the hair shaft, making the hair smoother, softer, and more manageable. It helps to repair damaged hair cuticles, reduce frizz, and enhance hair shine. In a hair conditioner formulation, 1831MS - 70% can improve the hair's combability, and users can feel a significant difference in hair texture after use. In addition, in fabric softeners, it can also improve the hand - feel of fabrics, making them more comfortable to the touch.
- Good Emulsifying Ability: As a cationic surfactant, 1831MS - 70% has certain emulsifying properties. It can reduce the surface tension between two immiscible phases, such as oil and water, and help form stable emulsions. In the production of emulsion - type cosmetic products like lotions and creams, it can emulsify oils and waxes in an aqueous medium, resulting in a homogeneous and stable product with a long - term storage stability of up to 12 months without significant phase separation. It can also be used in some industrial emulsion - based processes, such as in the preparation of emulsion - type coatings, to improve the dispersion and stability of the coating components.
5. Application Fields
- Cosmetics and Personal Care:
- Hair Care Products: It is a key ingredient in various hair care products. In shampoos, it can help to clean the hair while also providing conditioning effects, making the hair easier to rinse and comb. In conditioners, it is the main conditioning agent, which can deeply nourish the hair, repair damage, and give the hair a soft and shiny appearance. In hair styling products such as hair gels and mousses, it can improve the product's hold and anti - static properties, preventing flyaways and making the hairstyle more durable.
- Skin Care Products: In some skin - care creams and lotions, it can act as an emulsifier and a skin - conditioning agent. As an emulsifier, it helps to create stable emulsions of oil - in - water or water - in - oil types, ensuring the uniform distribution of active ingredients in the product. As a skin - conditioning agent, it can improve the skin's feel, making it smoother and more hydrated. It can also have a certain antibacterial effect, which is beneficial for maintaining skin health.
- Textile Industry: In the textile industry, 1831MS - 70% is used as a fabric softener and an antistatic agent. During the textile finishing process, it is added to improve the quality and comfort of textiles. It can penetrate into the fiber structure, making the fabric feel softer and more comfortable to wear. Its antistatic property can reduce static electricity during the handling and use of textiles, which is especially important for synthetic fibers. In addition, it can also improve the color fastness of dyed fabrics in some cases.
- Other Industries: In the paper industry, it can be used as a paper softening agent to improve the hand - feel of paper products, making them more suitable for applications such as facial tissues and toilet paper. In water treatment, it can be used as a flocculant in some cases to help coagulate suspended particles in water, improving water quality. In the production of certain agricultural formulations, such as pesticide emulsions, it can be used as an emulsifier to improve the dispersion and efficacy of pesticides.
6. Storage and Transportation
- Storage Conditions: Store in a cool, dry, and well - ventilated area. Avoid direct sunlight and high - temperature environments, as excessive heat can potentially cause the product to degrade or change its physical state. The recommended storage temperature is between 5 °C and 30 °C. Keep the product away from strong oxidizing agents and incompatible substances to prevent chemical reactions.
- Transportation Precautions: During transportation, ensure that the packaging is intact and not damaged. The 50 - kg plastic drums should be properly secured to prevent tipping or leakage. For long - distance transportation, consider using temperature - controlled vehicles if the product is likely to be exposed to extreme temperatures. Follow all relevant regulations for the transportation of chemical products to ensure safe delivery.
