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Giemsa stain, modified_Molecular_structure_CAS_)
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Giemsa stain, modified

Catalog No. GS80 Name Sigma Aldrich
CAS Number Website http://www.sigmaaldrich.com
M. F. C14H14ClN3S Telephone 1-800-521-8956
M. W. 291.79906 Fax
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Storage Chembase ID: 133313


IUPAC name
7-(dimethylamino)-3H-phenothiazin-3-iminium chloride
IUPAC Traditional name
7-(dimethylamino)phenothiazin-3-iminium chloride
Giemsa Solution


PubChem SID 24895393
MDL Number MFCD00081642


Clinical for in vitro diagnostic use
Concentration 0.4 % (w/v) in buffered methanol solution, pH 6.8, with stabilizers
Quality Level IVD
Shelf Life (Expiry date on the label.)
Flash Point 11 °C
Flash Point 51.8 °F
GHS Pictograms GHS02
GHS Pictograms GHS06
GHS Pictograms GHS08
GHS Signal Word Danger
GHS Hazard statements H225-H301 + H311 + H331-H370
European Hazard Symbols Flammable Flammable (F)
European Hazard Symbols Toxic Toxic (T)
GHS Precautionary statements P210-P260-P280-P301 + P310-P311
RID/ADR UN 1230 3/PG 2
Risk Statements 11-23/24/25-39/23/24/25
Safety Statements 16-36/37-45
Hazard Class 3
UN Number 1230
Packing Group 2
German water hazard class 3


Description (English)
When blood films are stained using Giemsa Stain, the nucleus and cytoplasm of white blood cells take on characteristic blue or pink coloration. The use of purified eosin and thiazine dyes minimizes lot-to-lot variation.