Omnistab UV 1789

Omnistab UV 1789 is a 1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)propane-1,3-dione UV absorber. Also known as Avobenzone. It’s an oil-soluble ingredient used in sunscreen products to absorb the full spectrum of UVA rays. 

Product composition

  • CAS number(s): 70356-09-1
  • Chemical name(s): 1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)propane-1,3-dione
  • Molecular formula: C20H22O3
  • Molecular weight (g/mol): 310.4 g/mol
  • EU (EG-No (EINECS/ELINCS)): 274-581-6


  • Content (%): 95.00 min
  • Loss on drying (%): 0.50 max
  • Product form(s): Crystal powder, Powder
  • Packaging option(s): Carton


In 2007 we decided to start ICG Specialty Chemicals selling specialty chemicals and additives under the tradename Omnistab.



Partners in Chemicals expanded its business in Middle East by setting up a branch office in Dubai in 2014.

Our Dubai office gives direct access to the Middle East and Africa. Having warehousing facility in the Dubai Free Zone makes it much easier to import, stock and re-export material to different destinations around the globe.




To serve the American market we have set up our Chicago branch office in 2009.



Deltachem (Qingdao) Co. Ltd. has been established in 2012 but general manager Mr. Mike Zou is already since 2007 a business partner for the Omnistab range.

Deltachem is the partner of Choice for Partners in Chemicals.

Besides being responsible for sourcing new products, supplychain and quality controle Deltachem is also managing the production facilities and handles the technical support.

Visit Deltachem