Refractive
Indices |
|
|
|
|
706.5 |
1.63486 |
|
656.3 |
1.63674 |
|
643.8 |
1.63726 |
|
632.8 |
1.63775 |
|
589.3 |
1.63990 |
|
587.6 |
1.64000 |
|
546.1 |
1.64254 |
|
486.1 |
1.64737 |
|
480.0 |
1.64797 |
|
435.8 |
1.65307 |
|
404.7 |
1.65777 |
|
365.0 |
1.66577 |
|
|
|
|
|
|
|
Constants of Dispersion
Formula |
|
2.6490884 |
|
-1.4159869 10 |
|
1.445113510 |
|
5.270787310 |
|
-4.344752310 |
|
2.461297110 |
|
Relative Partial Dispersions
|
|
0.3068 |
|
0.2559 |
|
0.2387 |
|
0.2369 |
|
0.5360 |
|
0.4761 |
|
|
|
-0.0023 |
|
-0.0072 |
|
Chemical
Properties |
|
Grade |
.gif)
|
1 |
.gif)
|
3 |
|
4 |
|
4 |
|
ThermalProperties |
.gif)
|
666 |
.gif)
|
686 |
|
610 |
|
639 |
|
63 |
|
72 |
|
Mechanical
Properties |
|
634 |
|
|
|
10903 |
|
4236 |
|
0.287 |
|
Stress-Optical
Coefficient |
|
|
|
Coloration
Code |
|
36/30 |
|
|
|
Other
Properties |
|
2.99 |
|
|
|
Internal
Transmittance |
|
|
|
2400 |
0.76 |
0.58 |
2200 |
0.918 |
0.842 |
2000 |
0.975 |
0.951 |
1800 |
0.990 |
0.980 |
1600 |
0.995 |
0.991 |
1400 |
0.998 |
0.996 |
1200 |
0.999 |
0.998 |
1060 |
0.999 |
0.998 |
1000 |
0.999 |
0.998 |
950 |
0.999 |
0.998 |
900 |
0.999 |
0.998 |
850 |
0.999 |
0.998 |
800 |
0.999 |
0.998 |
700 |
0.998 |
0.997 |
650 |
0.998 |
0.997 |
600 |
0.998 |
0.997 |
550 |
0.998 |
0.996 |
500 |
0.997 |
0.995 |
480 |
0.997 |
0.994 |
460 |
0.995 |
0.991 |
440 |
0.994 |
0.988 |
420 |
0.992 |
0.984 |
400 |
0.987 |
0.974 |
390 |
0.981 |
0.963 |
380 |
0.971 |
0.943 |
370 |
0.953 |
0.908 |
360 |
0.920 |
0.847 |
350 |
0.87 |
0.76 |
340 |
0.79 |
0.63 |
330 |
0.69 |
0.47 |
320 |
0.56 |
0.31 |
310 |
0.42 |
0.17 |
300 |
0.29 |
0.08 |
290 |
0.19 |
0.04 |
280 |
0.12 |
0.01 |
|
1.64000 
60.20
0.010631 
1.64254 
60.00
0.010709