Carmine, powder, Sigma-Aldrich®

Supplier: SIGMA-ALDRICH MICROSCOPY

Synonyms: Carminic acid, Cochineal, Alum lake of Carminic Acid, Natural Red 4, FD and C Carmine, CI 75470, Carmine, calcium/aluminum lake

M-Clarity™ quality level = MQ200

C1022-100G C1022-25G C1022-5G
C1022-100GEA 539 GBP
C1022-100G C1022-25G C1022-5G
Carmine, powder, Sigma-Aldrich®
Carmine

Carmine is a red compound and is generally used with aluminum, iron and other metal salts to enhance its activity. During smear preparation, it is required for chromatin staining in fresh material. In presence of aluminum chloride, it is used for the staining of glycogen.


  • Carmine has been used for the staining of mammary glands
  • It has been used for the staining of the chromosomes

Formula: C₂₂H₂₀O₁₃
MW: 492,389 g/mol
Storage Temperature: Room Temperature
MDL Number: MFCD00167028
CAS Number: 1390-65-4
EINECS: 215-724-4

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Specification Test Results

Appearance (Colour) Red
Appearance (Form) Powder
Infrared spectrum Conforms to Structure
Solubility (Colour)
1 mg/ml in 2 N NH₄OH
Red
Assay (UV-Vis)
% Carminic acid
≥42.0 %

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