1.04175
Carmine (C.I. 75470)
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About This Item
Empirical Formula (Hill Notation):
C44H37AlCaO27 · 3H2O
CAS Number:
Molecular Weight:
1118.85
MDL number:
UNSPSC Code:
41116130
NACRES:
NA.21
form
solid
Quality Level
composition
Dye, ≥50% spectrophotometric assay
solubility
practically insoluble 1.3 g/L
bulk density
290 kg/m3
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
2-30°C
SMILES string
O1C(C(C(C(C1c2c(c3c(c(c2O)O)C(=O)c4c(c(c(c(c4)O)C(=O)O)C)C3=O)O)O)O)O)CO
InChI
1S/C22H20O13/c1-4-8-5(2-6(24)9(4)22(33)34)13(25)10-11(15(8)27)16(28)12(18(30)17(10)29)21-20(32)19(31)14(26)7(3-23)35-21/h2,7,14,19-21,23-24,26,28-32H,3H2,1H3,(H,33,34)
InChI key
DGQLVPJVXFOQEV-UHFFFAOYSA-N
General description
Carmine (C.I. 75470) (calcium-aluminium lacquer of carminic acid) for microscopy Certistain®, is a dry dye that is used for the preparation of a staining solution for staining nuclei and for demonstration of glycogen in histological sections of human origin.
As a Certistain® dye it is chemically quality-certified according to highest standards and strict specifications.
As a Certistain® dye it is chemically quality-certified according to highest standards and strict specifications.
Application
(calcium-aluminium lacquer of carminic acid) for microscopy Certistain®
Analysis Note
Identity
- aluminium:
passes test
- Calcium: passes test
- UV/VIS-Spectrum: passes test
Dye content (spectrophotometrically): ≥ 50 % (als C₂₂H₂₀O₁₃)
Absorption maximum λ 1 (Dimethyl sulfoxide): 565 - 570 nm
Absorption maximum λ 2 (Dimethyl sulfoxide): 525 - 532 nm
Spec. Absorptivity A 1%/1cm
- λ1<SUB>m</SUB><SUB>a</SUB><SUB>x</SUB>; 0.05 g/l; DMSO:
80 - 110
- λ2<SUB>m</SUB><SUB>a</SUB><SUB>x</SUB>; 0.05 g/l; DMSO: 105 - 150
TLC-Test: passes test
Water (according to Karl Fischer): ≤ 15 %
Sulfated ash: 10 - 17 %
Suitability for microscopy: passes test
- aluminium:
passes test
- Calcium: passes test
- UV/VIS-Spectrum: passes test
Dye content (spectrophotometrically): ≥ 50 % (als C₂₂H₂₀O₁₃)
Absorption maximum λ 1 (Dimethyl sulfoxide): 565 - 570 nm
Absorption maximum λ 2 (Dimethyl sulfoxide): 525 - 532 nm
Spec. Absorptivity A 1%/1cm
- λ1<SUB>m</SUB><SUB>a</SUB><SUB>x</SUB>; 0.05 g/l; DMSO:
80 - 110
- λ2<SUB>m</SUB><SUB>a</SUB><SUB>x</SUB>; 0.05 g/l; DMSO: 105 - 150
TLC-Test: passes test
Water (according to Karl Fischer): ≤ 15 %
Sulfated ash: 10 - 17 %
Suitability for microscopy: passes test
Legal Information
CERTISTAIN is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Regulatory Information
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