Optical constants of Pharmacoat 606 (Hydroxypropyl methylcellulose, HPMC)
Juntunen et al. 2024: n 1.10–1.65 µm
Wavelength:
µm
(1.1–1.65)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n=1.477+5.140\text{×}10^{-3}λ^{-2}+1.188\text{×}10^{-4}λ^{-4}$$Conditions
temperature: 296
Comments
Hydroxypropyl methylcellulose Pharmacoat 606, Shin-Etsu Chemical Co., Ltd., Tokyo, Japan). Powder. 23 °C
References
C. Juntunen, A. J. Rish, C. A. Anderson, Y. Sung. Refractive index measurement of pharmaceutical powders in the short-wave infrared range using index matching assisted with phase imaging. Powder Technol. 438, 119621-23149 (2024)