The product ion mass spectra of LDPE film containing 1 wt% Chimassorb 944 and Tinuvin 622 via LESA-ESI MS/MS

(a) Compound 1  (Precursor ion m/z 601.563 [C₃₅H₆₈N₈ + H]⁺; photodegradation products derived Chimassorb 944),

(b) Compound 2  (Precursor ion m/z 461.396 [C₂₆H₄₈N₆O + H]⁺; photodegradation products derived Chimassorb 944),

(c) Compound 3  (Precursor ion m/z 629.558 [C₃₆H₆₈N₈O + H]⁺; photodegradation products derived Chimassorb 944),

(d) Compound 4 (Precursor ion m/z 363.322 [C₂₀H₃₈N₆+ H]⁺; photodegradation products derived Chimassorb 944),

(e) Compound 5  (Precursor ion m/z 417.370 [C₂₄H₄₄N₆ + H]⁺; photodegradation products derived Chimassorb 944), 

(f) Compound 6 (Precursor ion m/z 403.354 [C₂₃H₄₂N₆ + H]⁺; photodegradation products derived Chimassorb 944)

[LESA-ESI MS/MS measurement conditions]

LESA system: Triversa Nanomate (Advion Inc.)

MS system: Q Exactive plus (Thermo Fischer Scientific Inc.)

Solvent: IPA/THF = 75/25

Pressure: 0.3 kpsi

Voltage: 1.8 kV

Liquid volume: 2 μL

MS conditions: Positive,  product ion scan, NCE 15-55