MATERIAL SAFETY DATA SHEET

Product Name: Phosphotungstic Acid

Catalog Number: 23610

DOT Hazard Class: Shipped as Excepted Quantity

MSDS Prepared: 01/06

Distributed By: Ladd Research

83 Holly Court

Williston, VT 05495

(802) 658-4961

HAZARDOUS COMPONENTS

CAS Number Percent Exposure Limits

Phosphotungstic Acid 12501-23-4 100% 5 mg/m³ TWA (ACGIH)

PHYSICAL AND CHEMICAL DATA

Appearance and Odor: White solid, no appreciable odor

Vapor Density: 224.8 (air=1.0)

Boiling Point: Decomposes

Freezing Point: 89EC

Solubility in Water: Very soluble

FIRE AND EXPLOSION HAZARD DATA

Flash Point: None

Extinguishing Media: Use agent most appropriate to extinguish surrounding fire.

HEALTH HAZARD DATA

Target Organs: CNS, cardiovascular system

Eye: Causes eye burns. May cause ulceration of the conjunctiva and cornea. May cause chemical conjunctivitis and corneal damage.

Skin: Causes skin burns. May cause skin rash in milder cases, and cold and clammy skin with cyanosis or pale color in more severe cases.

Ingestion: May cause severe damage to the digestive tract. Causes GI tract burns. May cause perforation of the digestive tract. May cause cardiac disturbances. May cause systemic effects.

Inhalation: Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. May cause cardiac abnormalities.

EMERGENCY AND FIRST AID

Eyes: Get medical aid immediately. DO NOT allow victim to rub or keep eyes closed. Extensive irrigation with water is required (at least 30 minutes).

Skin: Get medical aid immediately. Flush skin with plenty soap and water for at least 15 minutes.

Ingestion: DO NOT induce vomiting. If victim is conscious, give 2-4 cupfuls of milk or water.

Inhalation: Get aid immediately. Remove from exposure to fresh air. DO NOT perform rescue breathing.

REACTIVITY DATA

Stability: Stable under normal temperatures and pressures.

Conditions to Avoid: High temperatures, dust generation, excess heat.

Incompatibilities with Other Materials: Not Available

Hazardous Decomposition Products: Phosphine, oxides of phosphorous.

Hazardous Polymerization: Has not been reported.

SPILL, DISPOSAL AND STORAGE INFORMATION

Spills: Clean spills immediately. Avoid generating dusty conditions. Provide ventilation. Sweep into suitable disposal container.

Disposal: Consult local, state and federal regulations.

Storage: Keep refrigerated. Keep container closed when not in use.

PROTECTIVE EQUIPMENT AND CONTROL MEASURES

Eyes: Wear safety glasses and chemical goggles if splashing is possible

Skin: Wear appropriate gloves.

Respirator: Use OSHA/MSHA approved cartridge

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.