Glyceryl Tristearate

CAS Number
555-43-1
EC Number
209-097-6

What is Glyceryl Tristearate?

Glyceryl Tristearate (CAS 555-43-1), also known as Tristearin, is a fully saturated triglyceride derived from glycerol and stearic acid.

Where is Glyceryl Tristearate used?

  • Food: bloom inhibitor and texture modifier in chocolate and fat-based coatings, improving shelf stability
  • Pharmaceutical: matrix-forming excipient in sustained-release tablets
  • Pharmaceutical: lipid-based drug delivery systems controlling active ingredient release rates
  • Personal care: structural rigidity and smooth skin feel in stick formats such as lip balms, deodorants and solid lotions
  • Industrial: base component or additive in lubricants and metalworking compounds
  • It functions as an emulsifier, stabilizer and lubricant.

Good to know: Pharmaceutical supply conforms to USP and Ph. Eur. specifications.

Other Names (Synonyms)

2,3-di(octadecanoyloxy)propyl octadecanoate|Tristearin

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What are the physical properties of Glyceryl Tristearate?

Melting Point 55 °C
Boiling Point 260 °C
Density 0.8559 g/cm³ @ Temp: 90 °C
Flash Point 327 °C
Appearance off-white to cream powder
Color White to Off-White
Odor odorless, tasteless
Form neat
Refractive Index nD80 1.4385
Log P 24.672 (est)

Which trade and regulatory codes apply to Glyceryl Tristearate?

HS Code 29159000
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