Transmission Range (50% of total transmission)

0.6 - 40 µm (thickness 5,5/ 5 mm)

Refractive Index

2,57288 @633nm

Reflective Loss

16,53% @10 µm

Reststrahlen

170 µm (max. Reflection)

Density

7,365 g/cm³

Melting Point

414.5°C

Molecular Weight

42% TlBr, 58% TlI

Thermal_Conductivity

0.544 W/(m·K) @293K

Heat Capacity

160 J/(kg·K)

Thermal Expansion

58.0 · 10^-6 /K   @293...373K

Hardness (Mohs)

40.2<100>(Indenter load: 200g)

Young`s Modulus

15.85 GPa

Shear Modulus

5.79 GPa

Bulk Modulus

19.78 GPa

Rupture Modulus

26,2 MPa

Elastic Coefficient

C₁₁ = 34,1;   C₁₂ = 13,6; C₄₄ =   5,79 GPa

Dielectric Constant

32,5 @298K; f = 100 Hz...10 MHz

Solubility in Water

0.05g / 100g @20°C

Crystal Structure

TlBr: 42%, TlJ: 58%

Crystal Type

cubic, CsCl type structure, a= 4,11 Å

Cleavage Planes

none

Poisson Ratio

0.34

Application

ATR Spectroscopy (Atenuated Total Reflection Plates), IR optics

Remarks

Attention: Thallium salts are toxic but because of the low water-solubility only little danger when handling with spectroscopy. KRS-5 is soluble in some organic barren (Ethylenglykol,   Dimethylsulfoxide, 1,2-Propandiamin), complexing agents and strong basics. Max. temperature for application: 200°C, easy deformable (cold liquidity).

0.54

2.68059

1.00

2.44620

1.50

2.40774

2.00

2.39498

3.00

2.38574

4.00

2.38204

5.00

2.37979

6.00

2.37797

7.0

2.37627

8.0

2.37452

9.0

2.37267

10.0

2.37069

11.0

2.36854

12.0

2.36622

13.0

2.36371

14.0

2.36101

15.0

2.35812

16.0

2.35502

17.0

2.35173

18.0

2.34822

19.0

2.34451

20.0

2.34058

21.0

2.33643

22.0

2.33206

23.0

2.32746

24.0

2.32264

25.0

2.31758

26.0

2.31229

27.0

2.30676

28.0

2.30098

29.0

2.29495

30.0

2.28867

31.0

2.28212

32.0

2.27531

33.0

2.26823

34.0

2.26087

35.0

2.25322

36.0

2.24528

37.0

2.23705

38.0

2.22850

39.0

2.21965

40.0

2.21047