CH₂Cl₂ (Dichloromethane, DCM)

3 datasets, together covering 0.2–12.53 µm. Default: Bertie et al. 1995: n,k 1.54–12.5 µm.

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Tick datasets in the list to add them to the plot (up to 12).

Datasets

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# CH2Cl2 (Dichloromethane, DCM): Bertie et al. 1995: n,k 1.54–12.5 µm
ch2cl2 = ls.fetch_refractiveindex("organic", "dichloromethane", "Bertie", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ch2cl2.range_nm)  # (1538.5, 12525.3) nm
eps = ch2cl2.eps([4390])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_8d3d09c2e060/lightsmith"
ch2cl2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(ch2cl2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (dichloromethane/bertie-1995).

# ... load ch2cl2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=ch2cl2)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=1539, stop_nm=12520, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

Same spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).

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Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

About CH2Cl2 (Dichloromethane, DCM)

Dichloromethane (CH₂Cl₂), also known as methylene chloride, is a volatile, colorless liquid with a characteristic sweet odor. It is commonly used as a solvent in paint strippers, aerosol formulations, and various chemical extraction processes, including the decaffeination of coffee. Due to its relatively high volatility, care must be taken when handling dichloromethane to avoid excessive inhalation, as prolonged exposure can pose health risks. In the realm of optics and spectroscopy, dichloromethane’s refractive properties are of interest for studying solvent effects and reaction kinetics. Its ability to dissolve a wide range of organic compounds, combined with its transparent nature in certain wavelengths, makes it valuable in laboratory-based optical and spectroscopic measurements.

Other names: CH2Cl2, Dichloromethane, DCM, CH₂Cl₂, Methylene chloride

API: /v1/materials/mat_1d07663d54b1 · slug dichloromethane