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MATERIAL SAFETY DATA SHEET FILE NO.: APJC Wel-Cote?? All-Purpose Joint Compound MSDS DATE:
07/03/02

SECTION 1: PRODUCT AND COMPANY IDENTIFICATION

PRODUCT NAME: Wel-Cote?? All-Purpose Joint Compound
SYNONYMS: All-Purpose, Joint Compound
PRODUCT CODES: 113, 114

MANUFACTURER: Welco Manufacturing Company
ADDRESS: 1225 Ozark Street, North Kansas City, Missouri 64116

EMERGENCY PHONE: (800)821-7352
OTHER CALLS: (816)471-1788
FAX PHONE: (816) 471-3439

CHEMICAL FAMILY: Dry mixture of minerals and binders.
CHEMICAL FORMULA: Compound

PRODUCT USE: Drywall joint finishing and repairs
PREPARED BY: Robert L. Hamilton

SECTION 1 NOTES:

SECTION 2: COMPOSITION/INFORMATION ON INGREDIENTS

INGREDIENT CAS Number % WT % VOL TLV (mg/m3) PEL(mg/m3)

Limestone 1317-65-3>50 >50 10 15(T)/5(R)

Mica 12001-26-2 <5 <1 3(R) 3(R)

Talc 14807-96-6 <1 <1 2(R) 2(R)

Attapulgite 12174-11-7 <1 <2 (NE) (NE)

Crystalline Silica 14808-60-7 <2 <2 0.1(R) 0.1(R)

Polysaccharide 53124-00-8
113894-92-1 <5 <5 10(T) 15(T)/5(R)

SECTION 3: HAZARDS IDENTIFICATION

EMERGENCY OVERVIEW: Not hazardous when used according to directions.

ROUTES OF ENTRY: Eyes, Mouth, and Nose

POTENTIAL HEALTH EFFECTS
EYES: Contact can cause mechanical irritation. Rinse with water for at least 15 minutes.

SKIN: Prolonged contact may cause irritation. Wash with soap and water.

INGESTION: No known effects.

INHALATION: Inhalation of dust may irritate nose, throat, and lungs. Remove to fresh air. Seek medical attention if
condition persists.

ACUTE HEALTH HAZARDS: See above.

CHRONIC HEALTH HAZARDS: Chronic overexposure to dust may result in lung disease and/or cancer.

MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE: Pre-existing upper respiratory and lung diseases, which may
include, but are not limited to, bronchitis, emphysema, and asthma.

CARCINOGENICITY
MATERIAL NTP: IARC:
Respirable Crystalline Silica Anticipated Group 1

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MATERIAL SAFETY DATA SHEET FILE NO.: APJC Wel-Cote?? All-Purpose Joint Compound MSDS DATE:
07/03/02

SECTION 3 NOTES: When used as directed, quantities of Respirable Silica would be expected to be less than the prescribed
OSHA/NIOSH limits. Wear eye and skin protection. Use NIOSH/MSHA approved respirator when dry sanding.

SECTION 4: FIRST AID MEASURES

EYES: Rinse with water for at least 15 minutes. If redness or irritation persists, consult physician.

SKIN: Rinse with soap and water. If irritation persists, consult physician.

INGESTION: If nausea or irritation occurs, consult physician.

INHALATION: Remove to fresh air. If respiratory symptoms persist, consult physician.

NOTES TO PHYSICIANS OR FIRST AID PROVIDERS: Rinse affected areas with water.

SECTION 5: FIRE-FIGHTING MEASURES

FLAMMABLE LIMITS IN AIR, UPPER: None
LOWER: None

FLASH POINT: Non-Combustible

AUTOIGNITION TEMPERATURE: None

NFPA HAZARD CLASSIFICATION
HEALTH: 1 FLAMMABILITY: 0 REACTIVITY: 0
OTHER: N/A

HMIS HAZARD CLASSIFICATION
HEALTH: 1 FLAMMABILITY: 0 REACTIVITY: 0
PROTECTION: 0

EXTINGUISHING MEDIA: Use appropriate extinguishing media for surrounding fire.

SPECIAL FIRE FIGHTING PROCEDURES: None

UNUSUAL FIRE AND EXPLOSION HAZARDS: None

HAZARDOUS DECOMPOSITION PRODUCTS: Carbon Dioxide will be produced at temperatures exceeding 800??C. Thermal
decomposition will produce Water, Carbon Dioxide, Carbon Monoxide, and Acetic Acid.

SECTION 6: ACCIDENTAL RELEASE MEASURES

ACCIDENTAL RELEASE MEASURES: Use normal clean up procedures. Area may become slick, take caution to avoid falling. Wear
appropriate protective equipment. Shovel material into a waste container for disposal.

SECTION 6 NOTES: Dispose of material in accordance with federal, state, and local regulations.

SECTION 7: HANDLING AND STORAGE

HANDLING AND STORAGE: Use appropriate personal protection equipment when handling and finishing.

OTHER PRECAUTIONS: Do not store in extreme heat or cold. Keep out of direct sunlight.

SECTION 8: EXPOSURE CONTROLS/PERSONAL PROTECTION

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MATERIAL SAFETY DATA SHEET FILE NO.: APJC Wel-Cote?? All-Purpose Joint Compound MSDS DATE:
07/03/02
ENGINEERING CONTROLS: Minimize dust exposure in accordance with good hygiene practices.

VENTILATION : Ventilate to keep exposures below TLV.

RESPIRATORY PROTECTION: Wear NIOSH/MSHA approved respirator when dry sanding.

EYE PROTECTION: Wear safety glasses or goggles to prevent particulate irritation to the eye.

SKIN PROTECTION: Generally not necessary, but may be desirable in certain conditions.

OTHER PROTECTIVE CLOTHING OR EQUIPMENT: None

WORK HYGIENIC PRACTICES: Follow acceptable good hygiene practices.

EXPOSURE GUIDELINES: Use wet sanding technique to avoid exposure to dust.

SECTION 9: PHYSICAL AND CHEMICAL PROPERTIES

APPEARANCE: White to off white powder.

ODOR: Low odor.

PHYSICAL STATE: Dry powder.

pH AS SUPPLIED: 7-8.5

BOILING POINT:
F: N/A
C: N/A
MELTING POINT: Decomposes
F: 787??
C: 1450??

FREEZING POINT:
F: N/A
C: N/A

VAPOR PRESSURE (mmHg): 0 @
F: 20??
C: -8??
SPECIFIC GRAVITY (H2O = 1): 1.5

SOLUBILITY IN WATER: Soluble

PERCENT SOLIDS BY WEIGHT: 100

PERCENT VOLATILE:
BY WT/ BY VOL @ 212??F/ 100??C
N/A N/A

VOLATILE ORGANIC COMPOUNDS (VOC): None

SECTION 10: STABILITY AND REACTIVITY

STABLE UNSTABLE

STABILITY: Yes

CONDITIONS TO AVOID (STABILITY): None known.

INCOMPATIBILITY (MATERIAL TO AVOID): None known.
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MATERIAL SAFETY DATA SHEET FILE NO.: APJC Wel-Cote?? All-Purpose Joint Compound MSDS DATE:
07/03/02
HAZARDOUS DECOMPOSITION OR BY-PRODUCTS: Carbon Dioxide, Carbon Monoxide, and Acetic Acid.

HAZARDOUS POLYMERIZATION: Will not occur.

CONDITIONS TO AVOID (POLYMERIZATION): None.

SECTION 11: TOXICOLOGICAL INFORMATION

TOXICOLOGICAL INFORMATION: Not toxic.

SECTION 12: ECOLOGICAL INFORMATION

ECOLOGICAL INFORMATION: No effect known.

SECTION 13: DISPOSAL CONSIDERATIONS

WASTE DISPOSAL METHOD: Dispose of in accordance with federal, state, and local regulations, as these will differ from one area to
the next.

RCRA HAZARD CLASS: None

SECTION 14: TRANSPORT INFORMATION

U.S. DEPARTMENT OF TRANSPORTATION
PROPER SHIPPING NAME: Wel-Cote? All-Purpose Joint Compound
HAZARD CLASS: Non Hazardous
ID NUMBER: NMFC 35240
PACKING GROUP: N/A
LABEL STATEMENT: None

SECTION 15: REGULATORY INFORMATION

U.S. FEDERAL REGULATIONS
TSCA (TOXIC SUBSTANCE CONTROL ACT): N/A

CERCLA (COMPREHENSIVE RESPONSE COMPENSATION, AND LIABILITY ACT): N/A

SARA TITLE III (SUPERFUND AMENDMENTS AND REAUTHORIZATION ACT): N/A

311/312 HAZARD CATEGORIES: None

313 REPORTABLE INGREDIENTS: None

STATE REGULATIONS: None

INTERNATIONAL REGULATIONS: None

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