Description of glass Dewar flask
Material
- borosilicate glass 3 ISO 3585
Chemical characteristics
- hydrolytic resistance: according to ISO 719 (98°C)
- hydrolytic resistance: according to ISO 720 (121°C)
- acid resistance: according to ISO 1776
- alkaline resistance: according to ISO 695-A2
Physical characteristics
- linear expansion coefficient: 3,3 x 10-6 1/K (in between 20-300°C)
- density: 2,23 g/cm3
- specific thermal capacity: 910 J/kg K
- transformation temperature: 525°C
Vacuum
- > 5 x 10-6 mbar
Silvering
- fully silvered