Octyl methoxy cinnamate(OMC)

OMC (Octyl Methoxy Cinnamate) – Detailed Description

Product Name: OMC
INCI Name: Ethylhexyl Methoxycinnamate
Other Names: Octyl Methoxy Cinnamate, Octinoxate
CAS Number: 5466-77-3
Molecular Formula: C₁₈H₂₆O₃
Molecular Weight: 290.40 g/mol
Chemical Class: Organic (chemical) UVB sunscreen filter

Description

Octyl Methoxy Cinnamate (OMC) is one of the most widely used UVB filters in cosmetic and personal care formulations. It is an oil-soluble, liquid organic compound that effectively absorbs ultraviolet B (UVB) radiation in the wavelength range of approximately 280–320 nm, helping to protect the skin from sunburn and UV-induced skin damage.

OMC is valued for its high UVB absorption efficiency, good skin feel, and formulation versatility, making it suitable for a wide range of sunscreen and daily skincare products.

Physical & Chemical Properties

• Appearance: Clear to pale yellow oily liquid

• Odor: Mild, characteristic

• Solubility:

  • Soluble in oils, esters, alcohols

  • Insoluble in water

• UV Absorption Peak: ~310 nm

• Stability: Good photostability when properly formulated, often combined with other UV filters to enhance performance

Functional Benefits

• Provides effective UVB protection

• Helps prevent sunburn and UV-related skin damage

• Contributes to higher SPF values

• Compatible with many emollients and sunscreen actives

• Produces clear, non-whitening formulations

Typical Usage Levels

• 0.5 – 7.5% (depending on regional cosmetic regulations)

• Often blended with UVA filters for broad-spectrum protection

Applications

• Sunscreen creams, lotions, gels, and sprays

• Daily moisturizers with SPF

• Foundations and BB/CC creams

• Lip care products with sun protection

Regulatory & Safety Notes

• Approved for cosmetic use in many regions including EU, India, and the USA, within specified concentration limits

• Must be declared on ingredient labels as Ethylhexyl Methoxycinnamate

• Used according to local cosmetic regulations and safety guidelines

Storage & Handling

• Store in a cool, dry place, away from direct sunlight

• Keep container tightly closed

• Protect from excessive heat