Ciba Specialty Chemicals

Personal Care Value beyond chemistry

Ciba TINOSORB S

Broad-spectrum UV Absorber Characterization TINOSORB S was specifically designed to meet the needs of the cosmetic industry. This

molecule belongs to the HydroxyPhenylTriazine family, which is well-known for its photostability. It is also the most efficient broad-spectrum UV filter: only 1,8% of TINOSORB S is sufficient to fulfill the Australian UVA Standard.

Chemical name INCI name USAN name CAS number Molecular formula Molecular weight Structure

2,4-bis-[4-(2-ethyl-hexyloxy)-2-hydrody]-phenyl-6-(4-methoxyphenyl)-(1,3,5)-triazine Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (BEMT) Bemotrizinol 187393-00-6 C38H49N3O5 627,80 g/mol

N N

N

OHO

OO

H

OCH3

Applications

TINOSORB S can be incorporated in sunscreens, but also in day care products as well as skin lightening products.

Features/benefits

High efficiency due to its broad-spectrum absorption Photostable Ease of formulation Less UV absorber required Excellent compatibility with cosmetic ingredients and other UV filters Ability to photostabilize other UV filters Synergistic effect with UV-B filters (SPF booster)

Guidelines for use

The concentration recommended is up to 5% (the concentration approved is up to 10%) At 25 C, TINOSORB S is soluble in polar cosmetic oils and insoluble in water

Technical Data Sheet Ciba TINOSORB S

May 04 Ciba TINOSORB S Ciba Specialty Chemicals Page 2 of 2

Physical Properties Product form Assay Melting point Odor

Light yellow powder

97%

80 C

Trace characteristic odor

UV properties

lmax E (1%, 1cm) lc (critical wavelength) UV-A/UV-B ratio

310 and 340 nm (in ethanol)

819 (in ethanol, 340nm)

373nm

0.73

0

200

400

600

800

1000

290 310 330 350 370 390

Wavelength / nm

E(1

,1)

Handling & Safety In accordance with good industrial practice, handle with care and prevent contamination of the environment. Avoid dust formation and ignition sources. For more detailed information please refer to the material safety data sheet.

Registration TINOSORB S is approved as UV filter on part I of Annex VII of the European Cosmetics Directive 76/768/EEC in concentration up to 10%. TINOSORB S is also approved in Switzerland and South America. Please contact your sales representative for further information on the registration status in other countries.

All trademarks mentioned are either property of or licensed to Ciba Specialty Chemicals and registered in relevant countries.

IMPORTANT: The following supersedes Buyers documents.

SELLER MAKES NO REPRESENTATION OR WARRANTY, EXPRESSED OR IMPLIED, INCLUDING OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. No statements herein are to be construed as inducements to infringe any relevant patent. Under no circumstances shall Seller be liable for incidental, consequential or indirect damages for alleged negligence, breach of warranty, strict liability, tort or contract arising in connection with the product(s). Buyers sole remedy and Sellers sole liability for any claims shall be Buyers purchase price. Data and results are based on controlled or lab work and must be confirmed by Buyer by testing for its intended conditions of use. The product(s) has not been tested for, and is therefore not recommended for, uses for which prolonged contact with mucous membranes, abraded skin, or blood is intended; or for uses for which implantation within the human body is intended. The information given in our circulars is based on the present state of our knowledge. It shows without liability on our part the uses to which our product can be put.

UVA UVB