At a glance
- CAS number
- 113894-92-1
- INCI name
- Hydroxypropyl Starch Phosphate
- Function
- thickener, film_former, emulsifier, emollient
- Typical use level
- 0.5%–10%
- Solubility
- water
- Stable pH
- 4–8
CAS number and synonyms are sourced from PubChem. Function, usage levels, pH and compatibility are AI-assisted formulation guidance — verify against your supplier's technical data sheet and applicable regulations before use.
Also known as
HPS Phosphate Modified Starch Phosphate Hydroxypropylated Starch Phosphate Structure XL Dry Flo
Compatibility
Works well with:
Glycerin Niacinamide Hyaluronic Acid Carbomer Xanthan Gum Panthenol
Use caution with:
High concentrations of ethanol
Hydroxypropyl Starch Phosphate is generally well tolerated across a broad range of cosmetic co-ingredients and is compatible with most electrolytes, humectants, and mild surfactants. High levels of alcohol (above ~30%) can disrupt its swelling behavior and reduce thickening efficacy. It should be dispersed in water under moderate agitation before heating to avoid lumping.
Formulation notes
Hydroxypropyl Starch Phosphate is a chemically modified corn or potato starch used primarily as a rheology modifier, thickener, and stabilizer in aqueous and emulsion systems. It imparts a smooth, powdery, non-tacky skin feel and can improve the spreadability of creams, lotions, and color cosmetics. It is also used as a natural-origin alternative to synthetic film formers and is valued for its skin-conditioning and oil-absorption properties.
Frequently asked questions
What is Hydroxypropyl Starch Phosphate?
Hydroxypropyl Starch Phosphate is a thickener, film_former, emulsifier, emollient used in cosmetic and personal-care formulation. Typical use level is 0.5%–10%. It is water-soluble. Stable in the pH 4–8 range.
What is Hydroxypropyl Starch Phosphate used for?
Hydroxypropyl Starch Phosphate is used as thickener, film_former, emulsifier, emollient in cosmetic and personal-care formulations.
What is the typical use level of Hydroxypropyl Starch Phosphate?
Hydroxypropyl Starch Phosphate is typically used at 0.5%–10% in the finished formulation. Always confirm against your supplier's technical data sheet.
What is the CAS number of Hydroxypropyl Starch Phosphate?
The CAS registry number for Hydroxypropyl Starch Phosphate is 113894-92-1. Its INCI name is Hydroxypropyl Starch Phosphate.
At what pH is Hydroxypropyl Starch Phosphate stable?
Hydroxypropyl Starch Phosphate is generally stable in the pH 4–8 range.
What ingredients are compatible with Hydroxypropyl Starch Phosphate?
Hydroxypropyl Starch Phosphate works well with Glycerin, Niacinamide, Hyaluronic Acid, Carbomer, Xanthan Gum, Panthenol. Use caution when combining it with High concentrations of ethanol.
Related ingredients
- Acrylates/C10-30 Alkyl Acrylate CrosspolymerThickener
- Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate CopolymerThickener
- Hydroxypropyl MethylcelluloseThickener
- Sodium PolyacrylateThickener
- Arachidyl AlcoholEmollient
- Behenyl AlcoholEmollient