Product Identification

Product Name

Wright's stain

Synonyms

Polychrome methylene blue, eosinate
Wright's blood staining

CAS

68988-92-1

EINECS

273-541-5

Beilstein/Gmelin

NA

Physical and Chemical Properties

Appearance

Dark blue liquid - solution in methanol. A complex compound from eosin and an oxidized and partly demethylated methylene blue.

Melting Point

-98

Boiling Point

65

Vapor Pressure

96

Density

0.8 g/cm3

Usage

Biological stain.

Vapor Density

1.1

First Aid Measures

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.

Handling and Storage

Storage

Store in a cool, dry place.

Handling

Wash thoroughly after handling. Use with adequate ventilation.

Hazards Identification

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.

Exposure Controls/Personal Protection

Personal 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.

Fire Fighting Measures

Flash Point

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.

Accidental Release Measures

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 and Reactivity

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.