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feature
non-bleeding: no
refill: no
size
20 mm × 70 mm
suitability
passes test for change range
application(s)
general analytical
detection method
colorimetric
General description
Congo paper is formed by impregnating filter paper with Congo red reagent. This reagent is a red-brown powder and gives a colloidal suspension when dissolved in water. It is used as an acid-base indicator. At pH 3.0 to 5.2, the colour changes from blue-violet to red.[1]
Packaging
box of 200 strips
signalword
Danger
hcodes
Hazard Classifications
Carc. 1B - Repr. 2
Storage Class
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Dr. Hans-Dieter Jakubke and Dr. Hans Jeschkeit
Concise Encyclopedia Chemistry, 257-257 (1994)
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