ERIOCHROME BLACK T
ERIOCHROME BLACK T AR/ACS
C.I.No.14645 Indicator for the determination of calcium plus magnesium by titration with EDTA
Short Name: ERIOCHROME BLACK T
Synonym: Solochrome Black T, Sodium 4-[(1-hydroxynaphthalen-2-yl-hydrazinylidene]-7-nitro-3-oxo-Y-naphthalene-1-sulphonate
Basic Details
Article No.
LG2003
Grade
AR/ACS
Purity
CAS No.
1787-61-7
HS Code
3204.9000
Shelf Life
60 Months
Packings Avialable
Physical Properties
Physical state at 20 °C
Solid
Colour
Brownish black powder
Odour
Odorless
Chemical Specifications
Appearance
Brownish black powder
Suitability (as metal indicator)
Passes test
Absorption maxima at pH 10
612 - 616 nm
Clarity of solution
Passes test
Specific absorptivity A1%/1cm (λmax; 0.02 g/L; buffer pH 10.0; calculated on dried substance)
Min 300.0
Loss on drying (at 110°C)
Max 7.0%
Safety Information & Hazard Symbols
Risk Statement
36-51/53
Safety Statement
26-61