Wright’s stain

  • Wright's blood staining
  • Polychrome methylene blue, eosinate
Formula
Unspecified
Description
Dark blue liquid - solution in methanol. A complex compound from eosin and an oxidized and partly demethylated methylene blue.
Uses
Biological stain.

Registry Numbers and Inventories.
CAS
68988-92-1
EC (EINECS/ELINCS)
273-541-5
Beilstein/Gmelin
NA
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Melting point, °C
-98
Boiling point, °C
65
Vapor pressure, mmHg
96
Vapor density (air=1)
1.1
Evaporization number
4.6 (butyl acetate=1)
Density
0.8 g/cm3

Hazards and Protection.
Storage
Store in a cool, dry place.
Handling
Wash thoroughly after handling. Use with adequate ventilation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.
Stability
Stable under normal shipping and handling conditions. However, may decompose if heated.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, oxides of nitrogen, carbon dioxide, hydrogen bromide, sulfur oxides (SOx), including sulfur oxide and sulfur dioxide.

Fire.
Flash Point,°C
11
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Health.
Exposure effects
   Ingestion
May cause irritation of the digestive tract. Low hazard for usual industrial handling.
   Inhalation
Dust is irritating to the respiratory tract. Low hazard for usual industrial handling.
   Skin
May cause mild skin irritation. Low hazard for usual industrial handling.
   Eyes
Contact may cause transient irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid if irritation or symptoms occur.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Get medical aid if irritation develops or persists. Flush skin with plenty of soap and water.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.