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About This Product
Hydroxypropyl tetrahydropyrantriol is a C-glycoside made from the sugar xylose and is listed under CAS 439685-79-7. This grade is a 99% white powder with loss on drying and ash of 5.0% maximum, a fineness of 95% through 80 mesh, heavy metals of no more than 10 ppm and a total plate count of 10,000 cfu/g maximum. Store it sealed and protected from light at 5–25 °C. In cosmetics it goes into leave-on formulations such as serums, creams, essences and eye-contour products, normally dissolved in the water phase. Confirm the physical form before ordering, as the ingredient is also traded as aqueous solutions, and ask for a product-specific specification that names the assay method behind the 99% content.
Specifications
CAS No.439685-79-7
AppearanceWhite powder
Content99%
Loss on drying≤5.0%
Ash≤5.0%
Particle size95% pass 80 mesh
Heavy metalsNMT 10 ppm
Arsenic, lead, cadmium and mercuryNMT 2 ppm each
Total plate count10,000 cfu/g max
Yeast and mould1,000 cfu/g max
E. coli and SalmonellaNegative
StorageSealed and shaded in a cool, dry place at 5–25 °C
Applications
Leave-on face serumsFace creams and essencesEye-contour productsWater-phase skin-care formulations
