G5637

Giemsa stain

certified by the Biological Stain Commission

• Synonym(s): Azure mixture sicc. Giemsa stain
• Empirical Formula (Hill Notation): C₁₄H₁₄ClN₃S
• CAS Number: 51811-82-6
• Molecular Weight: 291.80
• MDL number: MFCD00081642
• PubChem Substance ID: 329799943
• NACRES: NA.47

Properties

• grade: certified by the Biological Stain Commission
• Quality Level: 200
• form: powder or crystals
• mp: 300 °C (lit.)
• solubility: ethanol: 1 mg/mL, blue to very deep blue
• absorption: ≥0.6 at 647-653 nm in methanol at 0.005 g/L
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: [Cl-].CN(C)c1ccc2N=C3C=CC(=[NH2+])C=C3Sc2c1
• InChI: 1S/C14H13N3S.ClH/c1-17(2)10-4-6-12-14(8-10)18-13-7-9(15)3-5-11(13)16-12;/h3-8,15H,1-2H3;1H
• InChI key: NALREUIWICQLPS-UHFFFAOYSA-N

Description

General description

Giemsa is a versatile polychromatic stain, which is suitable for staining a diverse range of specimens. Giemsa’s stain is frequently used for diagnostic purposes in hematology to differentiate the nuclear and cytoplasmic morphology of platelets, RBCs, WBCs, and parasites. It is frequently used in combination with other dye solutions as May-Grunwald’s solution for Pappenheim (MGG) and Wright-Giemsa. The Giemsa stain was adapted to histology due to its unique staining of chromatin, nuclear membranes, and cytoplasmic elements. Giemsa′s staining solution is composed of methylene blue, azure, and eosin.

Application

Giemsa stain has been used for the staining of cells and blood films.It is required for the staining of azurophil granules and is an excellent stain for inclusion bodies.Its applications can be seen in hematology for blood and bone marrow specimens, bacteriology, clinical cytology specimens, histological biopsies, and tumor samples.

Suitability

Certified for Giemsa stain for blood films and for the Wolbach′s Giemsa method for paraffin sections.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves