When formulating advanced personal care products, selecting the correct rheology modifier is paramount. Among the most widely used are Carbomers, synthetic polymers derived from acrylic acid. Specifically, Carbomer 940 and Carbomer 980 are often considered, but understanding their subtle differences is crucial for optimal performance. As a leading manufacturer and supplier of cosmetic ingredients, NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to helping formulators make informed decisions.

Carbomers, in general, are prized for their ability to thicken and stabilize formulations, creating sparkling clear gels when neutralized. They are low-dosage, high-efficiency ingredients that significantly enhance the texture, consistency, and aesthetic appeal of products ranging from lotions and creams to shampoos and hand sanitizers. For those looking to buy these essential materials, understanding the nuances between grades is key.

One of the primary distinctions between Carbomer 940 and 980 lies in their polymerization solvent systems. Historically, Carbomer 940 was polymerized using a benzene solvent system. While effective, benzene is a known carcinogen, leading to a shift towards alternative solvents for safety and regulatory compliance. Carbomer 980, on the other hand, is often polymerized in a less toxic cosolvent mixture, making it a 'toxicologically preferred' option, especially for products with stringent safety requirements.

Another point of comparison is the cross-linking structure. Carbomer 940 typically exhibits a more tightly cross-linked network compared to Carbomer 980. This difference can translate to variations in viscosity and clarity, though both grades are highly effective rheology modifiers. Many manufacturers find that Carbomer 940 can provide slightly higher viscosity at equivalent concentrations. However, the trend in the industry is increasingly towards benzene-free options like Carbomer 980, especially for pharmaceutical applications where meeting monographs like USP/NF, Ph. Eur., and others is critical.

For formulators seeking to buy cosmetic grade carbomer, the choice between 940 and 980 often depends on specific product requirements and regulatory considerations. If benzene-free is a non-negotiable criterion, Carbomer 980 is the clear choice. For applications where the slight differences in viscosity and cross-linking are critical and benzene residual levels are managed according to regulations, Carbomer 940 might still be considered.

At NINGBO INNO PHARMCHEM CO.,LTD., we understand the importance of sourcing reliable and high-quality raw materials. We offer both grades and can assist you in selecting the most suitable Carbomer for your specific needs. Whether you are developing a new hair styling gel, a luxurious moisturizing cream, or a stable pharmaceutical ointment, our commitment as a leading manufacturer and supplier in China ensures you receive consistent quality and competitive pricing. We invite you to contact us to discuss your formulation challenges and explore how our Carbomer products can elevate your next product.