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Product Datasheet and Specification

01122

Eriochrome Black T AR

C.I.No.14645 Indicator for the determination of calcium plus magnesium by titration with EDTA Solochrome Black T, Sodium 4-[(1-hydroxynaphthalen-2-yl-hydrazinylidene]-7-nitro-3-oxo-Y-naphthalene-1-sulphonate

CAS : 1787-61-7

HS Code : 3204.90000

Molecular Formula : C20H12N3NaO7S

Molecular Weight : 461.38

Shelf Life : 60 Months

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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 (lmax; 0.02 g/L; buffer pH 10.0; calculated on dried substance)
Min 300.0
 Loss on dryig (at 110°C)
Max 7.0%