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1.03164

Eriochrome cyanine R (C.I. 43820)

metal indicator, for analysis, reagent for aluminum

Synonym(s):

Eriochrome cyanine R (C.I. 43820)

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About This Item

Empirical Formula (Hill Notation):
C23H15Na3O9S
CAS Number:
3564-18-9
Molecular Weight:
536.39
MDL number:
MFCD00012411
UNSPSC Code:
12352107
EC Index Number:
222-641-7
NACRES:
NB.21
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Product Name

Eriochrome cyanine R (C.I. 43820), for analysis (reagent for aluminium)

Quality Level

200

potency

>2000 mg/kg LD50, oral (Rat)

loss

≤10% loss on drying, 110°C

pH

9.1 (24 °C, 10 g/L in H2O)

solubility

420 g/L

bulk density

590 kg/m3

λmax

434-440 nm (buffer pH 7.0)

storage temp.

2-30°C

SMILES string

[Na+].[S]1(=O)(=O)OC(c4c1cccc4)(c3cc(c(c(c3)C(=O)O)O)C)c2cc(c(c(c2)C(=O)O)O)C

InChI

1S/C23H18O9S.Na/c1-11-7-13(9-15(19(11)24)21(26)27)23(14-8-12(2)20(25)16(10-14)22(28)29)17-5-3-4-6-18(17)33(30,31)32-23;/h3-10,24-25H,1-2H3,(H,26,27)(H,28,29);/q;+1

InChI key

HJEGHSWGWSAZBS-UHFFFAOYSA-N

Application

  • Determination of Food Oxalates Using Silica-Titania Xerogel Modified with Eriochrome Cyanine R.: This research explores a novel method to determine oxalate concentrations in food using Eriochrome Cyanine R, highlighting the dye′s potential in enhancing analytical sensitivity and specificity (Morosanova et al., 2018).
  • Development of a Dispersive Liquid-Liquid Microextraction Method Combined with UV-Visible Spectrophotometry for Determination of Trace Aluminum(III) in Water, Wastewater, Food, Biological, and Pharmaceutical Samples.: This study demonstrates a new method utilizing Eriochrome Cyanine R for tracing aluminum levels across various samples, showcasing its utility in environmental and health-related chemical analyses (Birgani et al., 2017).
  • Direct, sensitive determination of trace amounts of dissolved ferric iron in natural water by light absorption ratio variation spectrometry.: Though not directly mentioning Eriochrome Cyanine R, this article focuses on related spectrometric techniques that can be adapted for dyes like Eriochrome Cyanine R to detect iron in natural water sources (Gao et al., 2005).
  • Determination of vanadium by solid-phase spectrophotometry after its preconcentration as an Eriochrome Cyanine R complex on a dextran-type exchanger.: This research introduces a method for vanadium determination using Eriochrome Cyanine R, underlining the dye′s role in the preconcentration and quantification of vanadium in complex matrices (Boudra et al., 1995).

Analysis Note

Identity (UV/VIS-Spectrum): passes test
Absorption maximum λmax. (buffer pH 7.0): 434 - 440 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.02 g/l; buffer pH 7.0; calc. on dried substance): 130 - 230
Loss on drying (110 °C): ≤ 10 %

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

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