CALCON FOR TITRATING METAL

C.I.No.15705
Eriochrome Blue Black R, Solochrome Dark Blue

Article No.

02488

Grade

Purity

CAS No.

2538-85-4

Molecular Formula

C₂₀H₁₃N₂NaO₅S

Molecular Weight

416.39

H.S. Code

2927.0090

Shelf Life

60 Months

MSDS

Certificate of Analysis (COAs)

Physical Properties

Physical state at 20 °C

Solid

Colour

Blackish brown

Odour

Odorless

Solubility in water [% weight]

Moderate (1-10%)

Appearance	Dark blackish brown powder
Identity (UV/VIS spectrum)	Passes test
Absorption maxima λmax. (buffer pH 12.2)	634 - 640 nm
Specific absorptivity A1%,1cm (λmax;0.0015%;buffer pH 12.2, calculated on dried substance)	250-500
Loss on drying (at 110°C)	Max 10.0%
Suitability (as indicator for metal titration)	Passes test