Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate

BTMPS
Names
Other names
Trade names
  • Tinuvin 770 (BASF)
  • Lowilite 77 (SI Group)
  • ADK STAB LA-77 (Adeka)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.052.899
EC Number
  • 258-207-9
MeSH C083752
UNII
  • InChI=1S/C28H52N2O4/c1-25(2)17-21(18-26(3,4)29-25)33-23(31)15-13-11-9-10-12-14-16-24(32)34-22-19-27(5,6)30-28(7,8)20-22/h21-22,29-30H,9-20H2,1-8H3
    Key: XITRBUPOXXBIJN-UHFFFAOYSA-N
  • CC1(C)CC(CC(C)(C)N1)OC(=O)CCCCCCCCC(=O)OC2CC(C)(C)NC(C)(C)C2
Properties
C28H52N2O4
Molar mass 480.734 g·mol−1
Appearance white powder (aminoxyl form is orange-red)
Density 1.05 g/cm3
Melting point 81 to 85 °C (178 to 185 °F; 354 to 358 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate (abbreviated BTMPS) is a hindered amine light stabilizer used to protect plastics and coatings such as paint from oxidation caused by weathering. Like most compounds of this class, the activated form is an aminoxyl radical.

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