Molecular Structure:

Molecular Formula: C₃₆H₂₇N₃O₅Br₄S
IUPAC Name: [7-(Dimethylamino)phenothiazin-3-ylidene]-dimethylazanium; 2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-10-ium-9-yl)benzoic acid
Synonyms of Wright stain (CAS NO.3270-02-8): EINECS 273-541-5 ; Polychrome methylene blue, eosinate ; Wright's stain ; Wrights stain ; Stains, biological, Wright's
CAS NO: 3270-02-8
Classification Code: TSCA UVCB 
Density: 0.8
Melting point: -98 ºC
Boiling point: 65 ºC
Refractive index: 1.52-1.522
Flash point: 11 ºC

  Wright stain (CAS NO.3270-02-8) is used as the biological stains.

Hazard Codes of Wright stain (CAS NO.3270-02-8): Xn,T,F,Xi
Risk Statements: 22-41-52/53-23/25-11-36/37/38 
R22: Harmful if swallowed. 
R41: Risk of serious damage to the eyes. 
R52/53: Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
R23/25: Toxic by inhalation and if swallowed. 
R11: Highly flammable. 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26-61-24/25-7-2-16-37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S61: Avoid release to the environment. Refer to special instructions / safety data sheets. 
S24/25: Avoid contact with skin and eyes. 
S7: Keep container tightly closed. 
S2: Keep out of the reach of children. 
S16: Keep away from sources of ignition. 
S37/39: Wear suitable gloves and eye/face protection.
WGK Germany: 3