MATERIAL SAFETY DATA SHEET

Product Name: Toluidine Blue O

Catalog Number: 70975, 70975-KG

Other Names: Dimethyltoluthionine Chloride, Blutene Chloride

DOT Hazard Class: Not hazardous

MSDS Updated: 8/12/02

Distributed By: Ladd Research Industries

83 Holly Court

Williston, VT 05495

(802) 658-4961

HAZARDOUS COMPONENTS

CAS Number Percent Exposure Limits

Toluidine Blue O 92-31-9 85-94% Not available

PHYSICAL AND CHEMICAL DATA

Boiling Point: Not available

Melting Point: Not available

Specific Gravity: Not available

Solubility: Soluble in water, ethanol

Appearance and Odor: Odorless, dark green solid

FIRE AND EXPLOSION DATA

Flash Point: Not available

Explosive Limits: Not available

Extinguishing Media: Water spray, carbon dioxide, dry chemical powder, alcohol or polymer foam.

Special Fire Fighting Procedures: Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Unusual Fire and Explosion Hazards: Emits toxic fumes under fire conditions

HEALTH HAZARD DATA

May be harmful by inhalation, ingestion or skin absorption. May cause eye and skin irritation. To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.

EMERGENCY AND FIRST AID

Eye: Irrigate thoroughly with water for at least 10 minutes. If discomfort persists obtain medical attention.

Inhalation: Remove from exposure, rest and keep warm. In severe cases obtain medical attention.

Ingestion: Wash out mouth thoroughly with water and give plenty of water to drink. Obtain medical attention.

REACTIVITY DATA

Stability: Material is stable

Hazardous Polymerization: Will not occur

Incompatability: Strong oxidizing agents

Hazardous Decomposition Products: Toxic fumes of; carbon monoxide, carbon dioxide, nitrogen oxides, hydrogen chloride gas and sulfur oxides.

SPILL, DISPOSAL AND STORAGE INFORMATION

In Case of Spill, Release: Wear respirator, chemical safety goggles, rubber boots and heavy rubber gloves. Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.

Disposal: Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. Observe all federal, state and local environmental regulations.

Storage: Keep container tightly closed and in a cool, dry environment.

PROTECTIVE EQUIPMENT AND CONTROL MEASURES

Respirator: Dust respirator

Ventilation: Extraction hood

Gloves: Rubber or plastic gloves

Eye Protection: Goggles or face shield

Other Precautions: Plastic apron and sleeves

SECTION 313 SUPPLIER NOTIFICATION

Not applicable

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The information presented is believed to be correct and is the most accurate information available to us at this time. However, Ladd Research makes no warranty, express or implied, and assumes no liability for this information and the product described herein.