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Light Stabilizer 770CAS: 52829-07-9

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Quick Details
Synonyms: Bis(2,2,6,6-tetramethyl-4-piperidinyl)sebacate; HALS 770; Tinuvin 770; Primesorb770; Light stabilizer 770; light stability agent 770; Sunsorb 770; UV-770; BHSORB-770; Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate Classification: Plastic Auxiliary Agents
EINECS: 258-207-9 Molecular Formula: C28H52N2O4
Melting Point: 82-85℃ Boiling Point: 499.8°Cat760mmHg
Stability: Water Solubility:
Refractive index: Flash Point: 256 °C
Purity: Appearance: White crystalline powder or granules, odorless
HazardClass: Brand Name: Yusheng
Packaging & Delivery
Packaging Detail: 25kg carton or paper barrel(PE plastic inside)
Delivery Detail: as per order quantities
Detailed Description


Low Molecular Weight Hindered Amine Light Stabilizer (HALS)


YS 770 is a hindered amine light stabilizer (HALS) for applications demanding particularly high light stability. It provides excellent light stability for thick sections but can also be used for articles with a high surfacearea such as films and tapes.


Chemical Name Bis (2,2,6,6-tetramethyl-4-piperidyl) sebaceate
CAS Number 52829-07-9
Structure YS 770


Molecular Weight 480.74
Applications YS 770 is recommended to be used in polypropylene, impact modified PP (TPO), EPDM, polystyrene, impact poystyrene, ABS, SAN, ASA and polyurethanes and is also effective in polyamides and polyacetals.
Features/Benefits YS 770 is a low molecular weight hindered amine light stabilizer that provides excellent light stability for thick sections and films in the recommended substrates. Benefits of using YS 770 is the high light-stabilizing performance, particularly in PP thick sections. It has broad compatibility and can be easily dispersed.
Compared to conventional UV-absorbers, the effectiveness of YS 770 is less dependent on the polymer’s thickness. For this reason the use of YS 770 also provides good light stability in articles with higher specific surface, e.g.films and tapes.
Combined with other HALS YS770 is part of other synergistic blends, e.g. YS 791

Guidelines for use
   The recommended concentrations range between 0.1% and 0.5%, depending on the substrate, processing conditions and application.  The optimum level is substrate and application specific. Extensive performance data of YS 770 in various substrates and for various applications is available upon request.


Physical and Chemical Properties
Appearance and behaviour  White crystalline powder or granules, odorless
PH-value (1% suspension in water 20~25)  9.67
Melting / freezing temperature 80~86℃
Density (20)  1.05g/cm3
Flash point  >150℃
Ignition temperature  330℃
Water solubility (20)  <1mg/L
Vapor pressure (20 1.3 E-8 Pa
Partition coefficient (Log Pow, 20~25 0.35

Handling & Safety   In accordance with good industrial practice, handle with care and unnecessary personal contact. Avoid contact with eyes. Avoid release to the environment. Avoid dust formation and ignition sources.

For more detailed information please refer to the material safety data sheet.

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