Giemsa stain
SIGMA/G4507 - technical grade, used as a blood stain
Synonym: Azure mixture sicc. Giemsa stain
CAS Number: 51811-82-6
Empirical Formula (Hill Notation): C14H14ClN3S
Molecular Weight: 291.80
MDL Number: MFCD00081642; MFCD00081642
Linear Formula: C14H14ClN3S
Product Type: Chemical
ATR-IR Spectra for Azure mixture sicc. Giemsa stain.
| λmax | 645-655 nm |
| application(s) | diagnostic assay manufacturing hematology histology |
| color | dark greenvery dark |
| form | powder |
| grade | technical grade |
| InChI | 1S/C14H13N3S.ClH/c1-17(2) |
| InChI key | NALREUIWICQLPS-UHFFFAOYSA |
| mp | 300 °C (lit.) |
| Quality Level | 100  |
| SMILES string | [Cl-].CN(C)c1ccc2N=C3C=CC |
| solubility | ethanol: 1 mg/mL |
| storage temp. | room temp |
| suitability | application for blood stain |
| Application: | Giemsa stain has been used for the staining of cells and blood films. |
| General description: | Giemsa stain is a versatile differential stain that is widely used in hematology for blood and bone marrow specimens, clinical cytology specimens, bacteriology, histological biopsies, and tumor samples. Giemsa’s staining solution is composed of methylene blue, azure, and eosin. It is a major histological stain due to its unique staining of chromatin, nuclear membranes, and cytoplasmic elements. The stain is frequently used in combination with other dye solutions: May-Grünwald’s solution for Pappenheim (MGG) and Wright-Giemsa. |
| Hazard Codes | Xn |
| Risk Statements | 22-41 |
| Safety Statements | 26-39 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| mp | 300 °C (lit.) |
| Storage Temp. | room temp |
| UNSPSC | 12171500 |