BASF2 by Sumita

Obsolete Very Rare Environmentally Dangerous

BASF2 by Sumita is an obsolete optical glass with a very rare melt frequency. It transmits from 0.34 to 2.00 µm with an nd of 1.66446 and a Vd of 35.9. It has good chemical resistance and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.27–2.0 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.27–2.0 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.340–2.000 µm
Optical Properties
Refractive Index (nd) 1.66446
Abbe Number (Vd) 35.9
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.69397 - 0.00968254\,\lambda^2 + 0.0245216\,\lambda^{-2} + 0.00112268\,\lambda^{-4} - 4.48484 \times 10^{-5}\,\lambda^{-6} + 6.42588 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 8.6
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.95
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance 3
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BAFD2 Hoya 1.664457 35.887705
BASF2 Schott 1.66446 35.829357
BAH22 Ohara 1.664459 35.812757
N-BASF2 Schott 1.66446 36.0
H-ZBAF4 CDGM 1.66426 35.484251
BASF56 Schott 1.657149 36.735021
ADF405 Hoya 1.6765 37.477902
BPH40 Ohara 1.676498 37.537388
S-NBH52 Ohara 1.672999 38.14817
FD9 Hoya 1.654462 33.717017
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
K-PG395 Sumita 1.658 36.9
K-PSFn166 Sumita 1.663 34.4
K-PSFn166(M) Sumita 1.65858 34.4
K-PG395(M) Sumita 1.65296 36.8
SF9 Sumita 1.65446 33.8
SF19 Sumita 1.6668 33.1
K-BaSF4 Sumita 1.65128 38.3
BASF4 Sumita 1.65128 38.3
SF2 Sumita 1.64769 33.9
SF12 Sumita 1.64831 33.8
Compare Glasses
    Compare Selected