Omnistab LS 944

Omnistab LS 944 is a high molecular weight oligomeric hindered amine light stabilizer (HALS) and heat stabilizer. Shows excellent compatibility, good resistance to extraction and low volatility. Imparts excellent light stability to thin articles, particularly fibers and films. In thick cross sections it is specifically suitable for polyethylene articles. Omnistab LS 944 is highly effective as a long-term thermal stabilizer in thin and thick articles and shows good extraction resistance. Its areas of application include polyolefins (PP, PE), olefin copolymers such as EVA as well as blends of polypropylene with elastomers. In addition in certain instances Omnistab LS 944 is highly effective in polyacetals, polyamides, polyurethanes, flexible and rigid PVC as well as PVC blends and in certain styrenic elastomer. Its recommended dosage is 0.05-1.4%.

Product composition

  • CAS number(s): 71878-19-8/70624-18-9 (US)
  • Chemical name(s): Poly[[6-[(1,1,3,3-tetramethylbutyl)amino]-s-triazine-2,4-diyl]- [(2,2,6,6-tetramethyl- 4-piperidyl)imino]-hexamethylene-[(2,2,6,6-tetramethyl-4-piperidyl)imino]]
  • Molecular formula: C35H69Cl3N8
  • Molecular weight (g/mol): 708.34
  • EU (EG-No (EINECS/ELINCS)): 615-678-9


  • Ash (%): 0.10 max
  • Volatiles (%): 1.50 max
  • Melting point/range (ºC): 110.00 - 130.00
  • Transmittance 450 nm (%): 93.00 min
  • Transmittance 500 nm (%): 95.00 min
  • Product form(s): Powder, Granular
  • 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.

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