MATERIAL SAFETY DATA SHEET 

SECTION I 

MANUFACTURER 
MINNESOTA CLAY CO.USA 
7429 WASHINGTON AVE S 
EDINA, MN 55439 

EMERGENCY TELEPHONE (952) 884-9101 
CHEMICAL NAME ALUMINA SILICATE 
TRADE NAME AND SYNONYMS Northern Light Clay, Northern Light with Iron, Grolleg Porcelain, 
Grolleg Porcelain with Fiber, Polar Porcelain, Rainy Lake, No. 1 Stoneware, No. 1 Stoneware with Grog, 
No. 1 Stoneware with Manganese, No. 2 Stoneware, MB Stoneware, No. 3 Stoneware, No. 7 White Buff, 
White Sculpture, Red Sculpture, White Earthenware, Red Earthenware, White Earthenware (No talc), 
White Raku, Mc5 Casting Slip 


SECTION II 
HAZARDOUS INGREDIENTS 


MATERIAL % OSHA/PEL 8HR TWA 
*FREE SILICA UP TO 25% 0.1 mg/cu.m 
*Harmful only when prolonged & excessive respiration of dry, airborne materials occurs. 


SPECIAL LABELING INSTRUCTIONS 
MINNESOTA CLAY CO.USA is a subscriber to the Art and Craft Material Institute, 100 Boylston St., 
Boston MA 02116. Our clay and glaze products have been evaluated and certified in accordance with the 
voluntary chronic hazard labeling standard ASTM D-4236 (American Society for Testing and Materials). 
Products manufactured by MINNESOTA CLAY CO.USA are identified with the following labels: 


All above clays have been certified Non-toxic in the moist form. 

SECTION III 
PHYSICAL DATA 
BOILING POINT (f):N/A VAPOR DENSITY: N/A 
VAPOR PRESSURE:N/A SOLUBILITY IN WATER:N/A 
SPECIFIC GRAVITY (H2O=1):N/A PERCENT VOLATILE BY VOLUME:N/A 
EVAPORATION RATE:N/A 
APPEARANCE AND ODOR: Grey, Brown or White solid. EARTHY ODOR 

SECTION IV 
FIRE AND EXPLOSION HAZARD DATA 
FLASH POINT:N/A 
No fire or explosion hazard associated with this clay. 

SECTION V 
HEALTH HAZARD DATA 
THRESHOLD LIMIT VALUE: See Section II. 
EFFECTS OF OVEREXPOSURE: Prolonged over exposure to excessive concentrations of dry, airborne 
material may cause delayed lung injury (silicosis). Inhalation above the Occupational Exposure Limit may 
cause irritation of the respiratory passages. 

SECTION VI 


REACTIVITY DATA 
STABLE 
There are no known conditions to avoid, incompatible materials, hazardous decomposition products, or 
hazardous polymerization, associated with this product. 


SECTION VII 
SPILL OR LEAK PROCEDURES 
Use dustless methods and place into closable container for disposal. Dispose in accordance with Federal, 
State and Local regulations. Use wet cleaning methods to avoid making dust. 


SECTION VIII 
SPECIAL PROTECTION INFORMATION 
RESPIRATORY PROTECTION: OSHA approved mask for dusts. 
LOCAL EXHAUST: Suggested for fugitive dust. 
OTHER PROTECTIVE EQUIPMENT: Not required. 


SECTION IX 
SPECIAL PRECAUTIONS 
PRECAUTIONS TO BE TAKEN IN HANDLING AND STORING: Avoid breathing dust. . No smoking 
should be allowed in the work area. 
OTHER PRECAUTIONS: Vent kilns when firing. OTHER PROTECTIVE EQUIPMENT: Not required.