Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 0.250 nm.s-1 - Thickness = 457 nm Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 0.250 nm.s-1 - Thickness = 969 nm Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 0.250 nm.s-1 - Thickness = 1473 nm Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 0.250 nm.s-1 - Thickness = 1981 nm Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 0.250 nm.s-1 - Thickness = 2494 nm Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 0.250 nm.s-1 - Thickness = 3008 nm

Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 2.40 nm.s-1 - Thickness = 259 nm Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 2.40 nm.s-1 - Thickness = 503 nm Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 2.40 nm.s-1 - Thickness = 728 nm

Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 0.240 nm.s-1 - Thickness = 226 nm Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 0.240 nm.s-1 - Thickness = 472 nm Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 0.240 nm.s-1 - Thickness = 713 nm Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 0.240 nm.s-1 - Thickness = 954 nm Spectrum Absorbance MIR spectrum of amorphous HCOOH ice formed at 25 K with a deposition rate of 0.240 nm.s-1 - Thickness = 1189 nm