CAS Number: 12040-72-1

Description: Sodium salt, monohydrate, also known as CAS no. 12040-72-1, is an ingredient that has been used in cosmetics for various purposes. It is often utilized for its water-retaining and stabilizing properties. In cosmetics, it can serve multiple functions depending on the specific product formulation.

Other Names:
  • Sodium salt, monohydrate (scientific name)
  • Hydrated sodium salt

Uses in Cosmetics: Sodium salt, monohydrate is versatile and may be included in cosmetics for different reasons:
  • Stabilizer: It can help stabilize the texture and consistency of cosmetic products, ensuring they maintain their intended form and quality over time.
  • Hydrating Agent: Due to its ability to retain water, it may be used to enhance the moisturizing properties of certain cosmetic products, such as creams and lotions.
  • pH Adjuster: Sodium salts can also be employed to adjust the pH of cosmetic formulations to ensure they fall within a desirable range for skin compatibility.

Skin Sensitivities and Allergies: Sodium salt, monohydrate is generally considered safe for use in cosmetics. However, it's crucial to consider individual sensitivities and allergies. While it is not a common allergen, some individuals with hypersensitive or reactive skin may experience mild irritation or redness upon contact with products containing this ingredient. It's advisable for individuals with sensitive skin to perform a patch test when trying new cosmetic products.

Other Risks: Apart from the potential for skin sensitivities, sodium salt, monohydrate is generally considered safe for use in cosmetics when formulated within regulatory guidelines. It's important to note that the safety of cosmetic ingredients can depend on their concentration in a product and how they interact with other ingredients. Cosmetic manufacturers are responsible for ensuring that their products are safe for consumer use.

California Ban (Assembly Bill No. 496): As of January 1, 2027, California has implemented legislation (Assembly Bill No. 496) that prohibits the manufacture, sale, delivery, holding, or offering for sale in commerce of cosmetic products containing certain intentionally added ingredients, including sodium salt, monohydrate (CAS no. 12040-72-1). This ban reflects the state's commitment to consumer safety and aligns with efforts to restrict potentially harmful ingredients in cosmetics.

This legislative action is particularly significant for consumers with sensitive skin, as it demonstrates California's dedication to eliminating ingredients of concern from cosmetic products. Cosmetic manufacturers must comply with this regulation and reformulate their products to ensure they do not contain banned ingredients, including sodium salt, monohydrate, to continue to be available in the California market. This move aims to enhance the safety of cosmetic products for all consumers, especially those with sensitive skin.

How safe is it?

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