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Glycol stearate

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Glycol stearate is a type of alcohol with humectant properties, meaning it attracts and retains moisture in the skin. It is widely used in skincare, cosmetics, and personal care products to maintain hydration levels, prevent dryness, and improve the texture and spreadability of formulations. Additionally, glycols serve as solvents, helping active ingredients dissolve more effectively. Common types include propylene glycol, which is frequently used in moisturizers and serums, and butylene glycol, known for its lightweight feel and ability to enhance absorption.

Glycol stearate (Wikipedia)
Not to be confused with glycerol monostearate.

Glycol stearate (glycol monostearate or ethylene glycol monostearate) is an organic compound with the molecular formula C20H40O3. It is the ester of stearic acid and ethylene glycol. It is used as an ingredient in many types of personal care products and cosmetics including shampoos, hair conditioners, and skin lotions.

Glycol stearate
Names
Preferred IUPAC name
2-Hydroxyethyl octadecanoate
Other names
Ethylene glycol monostearate; Glycol monostearate; Octadecanoic acid, 2-hydroxyethyl ester; 2-Hydroxyethyl stearate; Stearic acid, 2-hydroxyethyl ester
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.003.534 Edit this at Wikidata
EC Number
  • 203-886-9
KEGG
UNII
  • InChI=1S/C20H40O3/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-20(22)23-19-18-21/h21H,2-19H2,1H3 checkY
    Key: RFVNOJDQRGSOEL-UHFFFAOYSA-N checkY
  • InChI=1/C20H40O3/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-20(22)23-19-18-21/h21H,2-19H2,1H3
    Key: RFVNOJDQRGSOEL-UHFRFAOYAH
  • O=C(OCCO)CCCCCCCCCCCCCCCCC
Properties
C20H40O3
Molar mass 328.537 g·mol−1
Melting point 55 to 60 °C (131 to 140 °F; 328 to 333 K)
Boiling point > 400 °C (752 °F; 673 K)
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
H315, H319, H335
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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