Butyl Methoxydibenzoylmethane

About butyl methoxydibenzoylmethane

Butyl methoxydibenzoylmethane is a crystalline powder with a slight aromatic odor. It dissolves in oils and not in water. The supplier specification advises fully dissolving it in the heated oil phase so it does not recrystallize. The supplier CoA confirms purity for each lot.

Why UVA protection matters

Sunlight contains UVB, which is linked with sunburn, and UVA, which reaches deeper and is linked with the look of premature aging. Avobenzone is valued because it absorbs well across the UVA range.

Regulatory notes

Check the rules of each market before formulating.

Photostability

Avobenzone can lose effectiveness in sunlight unless the formula stabilizes it. Formulators pair it with stabilizing filters and ingredients such as octocrylene or specific esters, and avoid combinations known to reduce stability. Discuss the filter system with the supplier and test photostability.

Product formats

The main use. Dissolve avobenzone in the oil phase with other filters and emollients.

Processing

Heat the oil phase with good solvents for the filter, such as suitable esters, and dissolve the powder completely. Check for crystals after cooling and after cold storage. Avoid contact with iron and some metal ions, which can discolor the filter; a chelating agent helps.

Partners

See related ingredients in the actives catalog.

Testing

Run, UVA and photostability tests in an accredited lab. Check for recrystallization and color changes during stability.

Characteristics

Form: crystalline powder with a slight aromatic odor. Solubility: oils; insoluble in water. Common name: avobenzone. Purity: supplier CoA.

Phase A: distilled water 56.30 g, glycerin 4.00 g, xanthan gum 0.30 g, disodium EDTA 0.10 g. Phase B: butyl methoxydibenzoylmethane 3.00 g, octocrylene 8.00 g, C12-15 alkyl benzoate 12.00 g, potassium cetyl phosphate 2.00 g, cetearyl alcohol 2.00 g, tocopherol 0.30 g. Phase C: preservative 1.00 g, silica 2.00 g, fragrance 0.20 g, sodium hydroxide solution to target pH 0.30 g, panthenol 8.50 g. Dissolve the filter fully in the hot oil phase, emulsify with An at 80 °C, cool and add C. Send for testing before any claim.

Formulating support

After-sun care is one of the most technical areas of cosmetics. Many brands work with a specialist formulator or the filter supplier's technical team. They can suggest tested filter combinations and help plan testing. This saves time and reduces the risk of failed tests.

Record the lot number in your batch log so every production run can be traced back to its certificate of analysis. Retain a small sample of each lot for at least the shelf life of the finished product, since it makes later quality questions much easier to answer.

Storage

Store closed in a dry place away from light. Close the container after use.