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DIMETHOXYDIGLYCOL.

Avoid CAS 111-96-6 / SOLVENT

Dimethoxydiglycol primarily serves as a solvent in cosmetic and pharmaceutical applications, assisting in the dissolution and delivery of other ingredients. However, its classification by the European Union as a Category 1B reproductive toxicant mandates extreme caution regarding its inclusion in formulations.

solvent penetration enhancer (potential)

Science

While specific dermatological mechanisms for Dimethoxydiglycol are not detailed, its primary role on the skin is as a solvent. By increasing the solubility of active ingredients within the stratum corneum, it may facilitate enhanced skin penetration, a function observed in related glycols such as Ethoxydiglycol.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Dimethoxydiglycol demonstrates robust chemical and thermal stability, including at high pH values, making it suitable for formulations containing strong bases or requiring elevated temperatures. A notable concern is its propensity to oxidize in air, forming unstable peroxides that pose a spontaneous explosion risk. Commercial products frequently incorporate antioxidants like 2,6-Di-tert.-butyl-4-methylphenol (BHT) to inhibit peroxide formation. It is also hygroscopic, requiring storage in dry conditions to prevent water absorption. An aqueous solution typically presents a neutral pH of approximately 7 at 20°C.

Conflicts

  • oxidizing agents

Safety

CIR Status
Not reviewed
Pregnancy
Caution
Sensitization risk Unknown

Dimethoxydiglycol (Bis(2-methoxyethyl) ether) is designated as a Category 1B reproductive toxicant by the European Union under Annex VI to Regulation (EC) 1272/2008. This classification signifies a presumption of adverse effects on human reproduction, typically based on animal studies. The Cosmetic Ingredient Review (CIR) has not conducted a specific safety assessment for Dimethoxydiglycol. Any SCCS opinions found in research pertain to a different compound, Diethylene Glycol Monoethyl Ether (DEGEE), not Dimethoxydiglycol.


Your Skin

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Avoid

Given its classification as a Category 1B reproductive toxicant by the European Union and the lack of specific safety reviews for cosmetic applications, Dimethoxydiglycol is not recommended for use in precision skincare.


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