Alcohols & Glycols
REACH
Diglycerin
CAS Number
59113-36-9
EC Number
261-605-5
What is Diglycerin?
Diglycerin (CAS 59113-36-9) is a polyol dimer of glycerol used in cosmetic, food, and pharmaceutical manufacturing as a humectant, emulsifier, and solvent carrier.
Where is Diglycerin used?
- Personal care: humectant and co-emulsifier in skin creams, serums, and hair conditioners
- Food: emulsifier and carrier in fat-based systems such as confectionery coatings and bakery shortenings
- Pharmaceutical: solvent and plasticizer in topical preparations and soft capsule shells
- Polymer and resin processing: plasticizer and softening agent
- It improves moisture retention and texture stability in cosmetic applications.
Good to know: Often preferred where standard glycerol or propylene glycol falls short in performance or regulatory fit. Low volatility and compatibility with active ingredients are relevant for drug delivery.
Commercial specifications
- Purity 90% to 99%+ depending on grade
- Can meet FCC or USP standards; packaging from drums to IBC containers
Other Names (Synonyms)
oxybispropanediol,|3-(2,3-dihydroxypropoxy)propane-1,2-diol|3-glyceryloxypropane-1,2-diol|3YC120743U|Glycerol dimer|RESASSOL DN|DIGLYCERIN 801|GREAT OIL DI 1
What are the physical properties of Diglycerin?
Melting Point 96-97 °C
Boiling Point 190 °C @ Press: 0.4 Torr
Density 1.279 g/cm³ @ Temp: 20 °C
Water Solubility 1000g/L at 20℃
Vapor Pressure 0Pa at 20℃
Log P -2.5 at 20℃
How is Diglycerin classified and handled safely? Learn More
Warning
GHS07· Irritant
Hazard Statements
H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation
Precautionary Statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.