C₁₂H₁₄O₄ (Diethyl phthalate, DEP)

2 datasets, together covering 0.8095–55.56 µm. Default: Querry 1987: Near-infrared; n,k 0.81–2.5 µm.

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Datasets

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# C12H14O4 (Diethyl phthalate, DEP): Querry 1987: Near-infrared; n,k 0.81–2.5 µm
c12h14o4 = ls.fetch_refractiveindex("organic", "diethyl_phthalate", "Querry-NIR", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c12h14o4.range_nm)  # (809.5, 2499.5) nm
eps = c12h14o4.eps([1420])  # 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_9070b48c2a61/lightsmith"
c12h14o4 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c12h14o4.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (diethyl-phthalate/querry-1987-nir).

# ... load c12h14o4 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=c12h14o4)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=810, stop_nm=1000, 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"]).

Materials guide Open a sphere of it in Studio Quick start Ask the community

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 C12H14O4 (Diethyl phthalate, DEP)

Diethyl phthalate (C₁₂H₁₄O₄), often abbreviated as DEP, is a clear and odorless liquid commonly employed as a solvent and plasticizer. It is used to make plastics more flexible and is also found in a variety of personal care products, such as perfumes, lotions, and cosmetics, due to its ability to help products retain scents and extend their shelf life. Additionally, DEP can be found in some food packaging materials. It's worth noting that concerns have been raised about the potential health impacts of phthalates, leading to extensive research and regulatory review in numerous jurisdictions.

Other names: diethyl_phthalate, C12H14O4, Diethyl phthalate, DEP, Diethyl phthalate, C₁₂H₁₄O₄, DEP

API: /v1/materials/mat_ccda42e6c644 · slug diethyl-phthalate