1.04175

Carmine (C.I. 75470)

• Empirische Formel (Hill-System): C₄₄H₃₇AlCaO₂₇ · 3H₂O
• CAS-Nummer: 1390-65-4
• Molekulargewicht: 1118.85

Eigenschaften

• Form: solid
• Qualitätsniveau: 200
• Zusammensetzung: Dye, ≥50% spectrophotometric assay
• Löslichkeit: practically insoluble 1.3 g/L
• Schüttdichte: 290 kg/m³
• Anwendung(en): diagnostic assay manufacturing; hematology; histology
• Lagertemp.: 2-30°C
• 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)
• InChIKey: DGQLVPJVXFOQEV-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

(calcium-aluminium lacquer of carminic acid) for microscopy Certistain^®

Hinweis zur Analyse

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

Rechtliche Hinweise

CERTISTAIN is a registered trademark of Merck KGaA, Darmstadt, Germany

Sicherheitshinweise

• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 1
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable