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Ceteareth 21 vs Steareth 21 core performance

2025,11,21
OILREE® MY972 (ceteareth 21) and OILREE® MY972-B (steareth 21) are the core cosmetic raw materials of the oil-in-water Emulsifier pair, and they are both excellent emulsifiers.With its stable characteristics and the advantage of being able to adapt to various formulas, it occupies an important position in the raw material market.MY972 is white flakes, suitable for high-concentration formulas, and it is easy to control during production; MY972-B is white particles, and the packaging size and usable scenes complement the former, giving cosmetics companies more raw material options.
 
Ceteareth 21 and Steareth 21 product overview
 
These two products rely on mature synthesis technology and strict quality control, and the purity and stability of both products are guaranteed.
Their core role is Oil in water Emulsifier for cosmetics, which simply means to help the oil and water in the formula blend well to make a stable and delicate cosmetic system.They are all non-ionic, have good compatibility with the skin, and have passed strict safety tests. They comply with the relevant regulations of cosmetic raw materials, so you can rest assured of using them.
 
From the point of view of the production process, both of them follow the standard steps of “synthesis-packaging-delivery for inspection-warehousing after passing”. Through precise control of the chemical reaction conditions, the content of the main ingredients reaches 99%-100%, ensuring that the performance of each batch of products is consistent.The difference is that in order to adapt to different forms and usage scenarios, adjustments have been made during subsequent processing.
 
Comparison of core differences
 
1. Basic attribute differences
 
Ingredients: The INCI name of MY972 is ceteareth 21.The INCI name of MY972-B is steareth 21, and the CAS number is 9005-00-9.The main components of both are polyether compounds, with similar molecular structures and good emulsifying effects.
 
Characteristics: At 25℃, MY972 is white flaky, with uniform texture, a little unique smell, and can dissolve in grease.MY972-B is a white particle, which also has a slight characteristic odor and can be dissolved in grease. It is more convenient for granular feeding.
 
Packaging: MY972 is 20 kg/bag, which is suitable for mass-produced enterprises to purchase and store in bulk.MY972-B is 10 kg/box, which is more suitable for small and medium-sized enterprises or small batch production, which can reduce inventory pressure and capital consumption.
 
2.Key performance comparison
 
The core performance indicators of the two products are almost the same, and the emulsifying ability and stability are excellent. The specific testing standards are as follows:
 
Acid value: Both acid value standards are ≤5mgKOH/g, and the actual test is 0.35mgKOH/g, which is much lower than the upper limit of the standard, indicating that the chemical properties are stable, not easy to deteriorate, and can help cosmetics extend the shelf life.
 
pH value: At 25℃, in 1% aqueous solution, the pH value of both is between 6.5-8, which is close to the pH value of human skin. It will not irritate the skin when used, and cosmetic formulas of various skin types can be adapted.
 
Purity and stability: The content of the main ingredients is 99%-100%, and the high purity makes the emulsifying effect more stable; when stored, OILREE® MY972 should be kept in a dark, room temperature, ventilated and dry place and sealed. MY972-B is kept at room temperature and closed to light. Both must avoid the temperature exceeding 45℃, so as to keep the properties unchanged.
 
3.Recommended addition amount and adaptation scenario
 
The recommended dosage of the two is similar. Whether it is disposable (such as face cream, essence) or rinse-off (such as shampoo, shower gel), the dosage is between 0.5% and 8%, and the daily recommended dosage is 1.0%-5.0%. Companies can adjust according to their own formula needs.
 
In terms of adaptation scenarios, both can be used in formulas containing high concentrations of electrolytes, high levels of ethanol or polyols, and they are stable over a wide pH range. Creams, lotions, essences, shampoos, and body washes can all be used.The difference is that the sheet form of MY972 is suitable for continuous feeding and mixing of large-scale production equipment, and is suitable for large-scale production lines.The granular shape of MY972-B is suitable for manual feeding or small equipment processing, especially for small batch and multi-batch production. The packaging of 10 kg/box is also convenient for laboratory research and development and pilot use.
 
Performance advantage
 
1.Emulsifying properties
 
Both have excellent emulsifying capabilities, which can quickly disperse oil and water evenly to make a bright and delicate emulsion.Moreover, the emulsifying system is particularly stable. Whether it is temperature changes, vibration during transportation, or standing for a long time, it is not easy to have quality problems such as stratification, oil analysis, and effluent.
 
It is worth mentioning that both of them can be adapted to high-concentration electrolyte formulas, such as cosmetics containing water-soluble active ingredients such as hyaluronic acid and vitamin C, which can solve the industry problem that the emulsifying system is easy to break in a high electrolyte environment.At the same time, they are also very friendly to formulas with high levels of ethanol or polyols, and can also be used in alcohol-containing cosmetics such as toners and serums.
 
In addition, the company's requirements for the emulsification ratio are not strict, and it is easy to control during production, which can reduce the production difficulty and quality control costs of enterprises, and improve efficiency.When used in combination with stearyl  ceteareth 2 and Emulsifying wax, it can also form a stable oil-in-water (O/W) emulsification system, making the formula more flexible.
 
2.Safety performance
 
The safety of cosmetic raw materials is very important, and both of these models perform well in this regard.According to toxicological tests, the oral semi-lethal dose of both products is >5000mg/kg, which is much higher than the safety standard. It does not irritate the eyes and skin, nor does it cause skin allergies, reducing the risk of allergies caused by cosmetics.
 
In terms of ecology, although they are harmful to aquatic organisms, as long as they are used normally and treated in accordance with regulations, they will not have a major impact on the environment.Product waste should be handed over to hazardous waste or special waste collection companies for disposal, so as not to leak into the environment, so as to comply with environmental regulations.
 
In terms of compliance, they all comply with relevant regulations such as the "General Principles for Chemical Classification and Hazard Publicity" and the "Regulations on the Safety Management of Hazardous Chemicals". There is no need to put on hazard warning labels, and the production and sales of enterprises are convenient for compliance.
 
3.Processing performance:
 
In addition to good emulsification and safety performance, the processing adaptability of the two is also good.It can be quickly integrated with other raw materials during production, will not affect the fragrance, color and skin feeling of the product, and can help companies accurately design the formula.
 
In terms of ease of operation, the flakes of MY972 are easy to weigh and crush, and are suitable for formulas that require further processing.The granular form of MY972-B can be fed directly, with fewer processing steps and higher efficiency.Moreover, the thermal stability of both is good. The heating and stirring links during the production of cosmetics will not decompose, and the performance has always been very stable.
 
Application scenario
 
1.Resident cosmetics
 
In disposable cosmetics such as face creams, lotions, and essence creams, both of them can play a good role in emulsifying, dispersing oils, moisturizers, and active ingredients evenly to make products with delicate texture and good taste.The stable emulsifying system allows the active ingredients to act continuously and evenly on the skin, enhancing the nourishing effect and use experience.
 
For example, in high-moisturizing creams, they can combine the oil-phase moisturizing ingredients such as vaseline and lanolin with the water-phase moisturizing ingredients such as hyaluronic acid and glycerin, so that the product will not be too greasy, nor will it dry and peel after use; in the anti-aging essence, it can adapt to the oil-soluble active ingredients such as Vitamin E and retinol to ensure that the ingredients are stable and effective, and the product can be better absorbed and the skin feels more comfortable.The 20 kg/bag packaging of MY972 is more suitable for large-scale cream and lotion production lines, while the small packaging of MY972-B is suitable for niche brands or high-end customized cosmetics production.
 
2.Rinsing cosmetics
 
Shampoo, shower gel, and cleanser, which are to be washed off after washing, can be combined with raw materials such as surfactants and conditioners to form a stable emulsion-like formula to enhance cleansing power and gentleness.They can emulsify the oil and dirt during cleaning, making these things easy to be washed away, while reducing the irritation of surfactants to the skin and scalp.
 
In shampoos with high concentrations of electrolytes (such as anti-dandruff shampoos with zinc salts), they can resist the damage of electrolytes to the emulsifying system and avoid product stratification and precipitation.With them added to the shower gel, the foam will be more delicate and stable, and it will be more comfortable to use.In addition, they are suitable for the characteristics of high-content ethanol formulas and can also be used in refreshing cleansing gels.
 
3.Special effect cosmetics
 
In cosmetics with special effects such as sunscreen and makeup, their high stability and wide adaptability are reflected.In sunscreens, physical sunscreens (such as titanium dioxide and zinc oxide) and chemical sunscreens can be emulsified to evenly disperse sunscreens and improve the uniformity and durability of sunscreens.In makeup such as liquid foundation and BB cream, it can help form a lightweight and obedient emulsifying system, improve concealer and makeup holding effect, and reduce powder and makeup loss.
 
The granular form of MY972-B has more advantages in the development of small batches of makeup, which is convenient for precise control of the feeding volume, while MY972 is suitable for large-scale production by makeup companies.
 
Purchase suggestions
 
1.Choose by production scale
 
Large-scale cosmetics companies or large-scale production lines: it is more appropriate to choose MY972. Large packaging of 20 kg/bag can meet the needs of mass production and reduce unit procurement costs. The flake form is suitable for continuous feeding of large-scale mixing equipment, which can improve production efficiency.
 
Small and medium-sized enterprises or small batch production: MY972-B is recommended. Small packages of 10 kg/carton can reduce the backlog of inventory, and the granular shape is convenient for manual feeding and small equipment processing, which reduces the difficulty of operation.
 
2.Selected according to storage and transportation conditions
 
Enterprises with sufficient storage space and convenient transportation: you can choose MY972, which is more efficient for large-scale packaging storage and transportation.
For companies with limited storage space or frequent transportation: MY972-B is recommended. Packaging of 10 kg/carton is easier to carry and store, reducing the risk of loss during transportation.
 
Industry trends
 
Now that the cosmetics industry is developing rapidly, consumers have higher and higher requirements for product safety, stability and experience. As the core raw material, the market demand for high-performance emulsifiers has been growing.With the advantages of high purity, high stability, and wide adaptability, MY972 and MY972-B are just in line with the development trend of the industry and provide reliable raw material support for cosmetics companies.
 
The differentiated layout of the two products can be seen that Hubei Mingya New Material Technology Co., Ltd. understands market demand very well, and it has also added impetus to the diversified development of the cosmetics industry.They rely on stable emulsifying properties to help companies reduce quality risks during production and improve product market competitiveness.Rely on good safety and compliance to ensure the safety of consumers; rely on flexible packaging and form design to meet the individual needs of enterprises of different sizes.
 
Now there are more and more consumer groups focusing on ingredients, and the quality of cosmetic raw materials has become an important part of the core competitiveness of enterprises.With excellent performance and reliable quality, MY972 and MY972-B have become good partners for companies to create high-quality products.
 
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Hubei Mingya New Material Co., Ltd.Founded in 2015, with more than ten years of industry experience, it is a professional manufacturer specializing in cosmetic surfactants.The factory is located in the scenic tourist city of Yichang, focusing on the research and development and production of skin care product raw materials, foundation emulsifiers, makeup remover raw materials and personal care products.   Our headquarters is located in Guangzhou, the ”South Gate of China".As a direct manufacturer, we integrate production, sales and technical services. You can rest assured that we can ensure the stability of the supply chain and the consistent product quality.Relying on advanced production equipment and standardized quality management system, it can provide reliable raw materials that meet international requirements.   The company has an experienced sales team, and the professional R&D department will also keep up with market trends to develop new formulas.This means that we not only have high-quality products, but also provide customized solutions to meet the different needs of cosmetics, personal care and industrial formulas.At the same time, we attach great importance to...
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