CAS Number 504-63-2 is associated with Propanediol 1,3, referred to simply as Propanediol. This natural and eco-friendly alternative to propylene glycol is derived from corn sugar and serves various functions in cosmetic formulations. It functions as a humectant, hair and skin conditioner, preservative booster, and solvent, providing a light, non-sticky, and slightly dry feel to the skin.
Propanediol enhances hydration in hair and body products, outperforming propylene glycol and butylene glycol at a 5% concentration. When combined with glycerin, it exhibits a synergistic effect, reducing the tackiness of glycerin while maintaining increased hydration levels. At concentrations up to 75%, it demonstrates low potential to irritate or sensitize the skin.
In surfactant systems, Propanediol improves clarity, viscosity, and reduces the amount of salt required for thickening. It enhances flash foam, creating more elegant systems with creamier lather and denser foam.
In hair care products like shampoos, conditioners, leave-on conditioners, and styling aids, Propanediol provides a cleaner feeling post-rinse, increases moisturization, improves detangling, reduces static, and enhances both wet and dry combing.
Furthermore, Propanediol serves as an excellent solvent for challenging-to-dissolve ingredients such as salicylic acid, ferulic acid, allantoin, and ascorbic acid.
Key Benefits
- Light, non-sticky skin feel
- Green substitute for propylene glycol from a renewable resource
- Viscosity enhancer
- Clarity enhancer for surfactant systems
- Increased freeze/thaw and heat stability
- Low potential to irritate or sensitize skin
- Good solvent for hard to dissolve ingredients as well as botanical extract
- Boosts efficacy of preservatives
- Hygroscopic, hydrates skin and hair well
- Kosher, halal, USP-NF
INCI: Propanediol.
Recommended Usage Percentage: 1 - 10%, up to 20%
Appearance: Clear colorless diol
Odor: Low, sweet
Solubility: Water
pH (as supplied): Neutral
Country of Origin: USA
Storage: sealed container within the temperature range of 0 – 50°C (32 –122°F). If containers are opened, re-seal and store within that temperature range, and avoid prolonged exposure to water and oxygen. The use of an inert gas, like Lotioncrafter OxBlox, or nitrogen is encouraged during storage.
Shelf Life: 2 Years can be expected, if seal is unbroken and stored as directed, otherwise ~ 9 -12 months .