VITRAVEST REFRACTORY DIE MODEL POWDER

Material Safety Data Sheet

Identity: VITRAVEST Fine Grain "Tru Die" (Powder)

SECTION I

Manufacturer: Gresco Products, Inc.

Address: 13391 Murphy Road - Stafford, TX 77477

Emergency Telephone Number: None

Telephone Number for Information: 1-765-643-1061

Date Prepared: Jan. 14, 2006

SECTION II & III - Hazardous Ingredients & Physical/Chemical Characteristics

Hazardous Components (As Defined by CFR 1910.1200): Crystalline Silica (Quartz) Cas 01-4808-60-7

Exposure Limits: OSHA PEL = .1mg/m3 TLV-TWA = .1mg/m3

Boiling Point: 4046oF

Vapor Pressure (mm Hg.): 0 at 20oC

Vapor Density (Air = 1): 1

Specific Gravity (water = 1): 2.65

Melting Point: 3050oF

Evaporation Rate (Butyl Acetate = 1): 0

Solubility in Water: Insoluble

Appearance and Odor White powder (Z-20 is light yellow), no odor

SECTION IV - Fire and Explosion Data

Flash Point (Method Used): Will not burn

Flammable Limits: None

Extinguishing Media: Non

Special Fire Fighting Procedures: None required

Unusual Fire and Explosion Hazards: None known

SECTION V - Reactivity Data

Stability: Stable

Incompatibility (Materials to Avoid): Contact with powerful oxidizers such as fluorine, chlorine

trifluoride, manganese trioxide, oxygen difluoride may cause fires.

Hazardous Decomposition or By Products: The by product of silica and hydrofluoric acid is silicon tetra

fluoride, a highly corrosive gas.

Hazardous Polymerization: Will not occur

SECTION VI - Health Hazard Data

Routes of Entry:

inhalation?: Yes

skin?: No

ingestion?: No

eyes?: No

Health Hazards (Acute and Chronic): Prolonged exposure to respirable crystalline silica may cause

delayed chronic lung injury (Silicosis).

Carcinogenicity:

NTP?: Yes - Respirable silica may be anticipated to be a carcinogen

IARC Monographs?: Yes - Class 2A - Sufficient evidence for carcinogenicity in

experimental animals; limited evidence for carcinogenicty in humans

Signs and Symptoms of Exposure: Undue breathlessness, wheezing, cough, sputum production.

Medical Conditions Aggravated by Exposure: Pulmonary function may be reduced by inhalation of respirable

crystalline silica. Also lung scarring produced by such inhalation may lead to a progressive massive fibrosis of the

lung which may aggravate other pulmonary conditions and diseases and which increases susceptibility to pulmonary

tuberculosis. Progressive massive fibrosis may be accompanied by right heart enlargement, heart enlargement,

heart failure, and pulmonary failure. Smoking aggravates the effects of exposure.

Emergency and First Aid Procedures: Eyes: Wash with large amount of water, consult a physician.

Inhalation: Remove person(s) to fresh air, give artificial respiration as needed, seek medical attention.

SECTION VII - Precautions for Safe Handling and Use

Steps to Be Taken in Case Material is Released or Spilled: Clean spilled material in a dustless manner.

Waste Disposal Method: Dispose in accordance with local, state, and federal regulations.

Precautions to Be Taken in Handling and Storing: Avoid spilling material and creating dust.

Other Precautions: Use adequate ventilation and dust collection.

SECTION VIII - Control Measures

Respiratory Protection: Recommended

Ventilation: Use sufficient exhaust to reduce the level of respirable

crystalline silica to the PEL.

Protective Gloves: Optional

Eye Protection: Recommended

Other Protective Clothing or Equipment: Optional

Work/Hygienic Practices: Avoid creating and breathing dust.