Material Safety Data SheetU.S. Department of Labor
May be used to comply withOccupational Safety and Health Administration
OSHA's Hazard Communication Standard,(Non-Mandatory Form)
29 CFR 1910.1200. Standard must beForm Approved
consulted for specific requirements.OMB No. 1218-0072

IDENTITY (As Used on Label and List)
Freshly Mixed Unhardened Concrete
Note: Blank spaces are not permitted. If any item is not applicable, or no information is available, the space must be marked to indicate that.

Section I
Manufacturer's Name
McTech Group Inc.
Emergency Telephone Number
Address (Number, Street, City, State, and ZIP Code)
120 Camp St. Suite B
Telephone Number for Information
Loganville, GA 30052 Date Prepared
 Signature of Preparer (optional)

Section II - Hazard Ingredients/Identity Information
Hazardous Components
(Specific Chemical Identity; Common Name(s))
Formula - Mixtures of Portland or blended cements, concrete aggregates and chemical admixtures.
Portland and blended cements:
Tricalcium Silicate (3CaO-SiO2)(CAS # 12168-85-3)
Dicalcium Silicate (2CaO-SiO2)(CAS # 10034-77-2)
Tricalcium Aluminate (3CaO-Al2O3)(CAS # 23042-78-3)
Tetracalcium Aluminoferrite (4CaO-Al2O3-Fe2O3)(CAS # 12068-35-8)
Calcium Sulfate Dihydrate (CaSO4-2H2O) (Gypsum) (CAS # 7778-18-9) PEL-TWA  15 Mg/M3 Total Dust
Plus traces of Calcium Oxide (CaO), Magnesium Oxide (MgO), Potassium Sulfate (K2SO4), and Sodium Sulfate (Na2SO4)
Other Ingredients: 
Concrete Aggregates, Inert gravel, sand and rocks
Admixtures may include fly ash, granulated slag and very small amounts of organic and inorganic materials which have no effect on the hazards associated with the use of the product.

Section III - Physical/Chemical Characteristics
Boiling PointN/ASpecific Gravity (H2O = 1)2.28 - 2.42
Vapor Pressure (mm Hg.)N/AMelting PointN/A
Vapor Density (AIR = 1)N/AEvaporation Rate (Butyl Acetate = 1)N/A
Solubility in WaterSlight (0.01 to 1%)PH for Plastic Concrete12.5
Appearance and Odor Gray, plastic, flowable, granular composite - Faint odor

Section IV - Fire and Explosion Hazard Data
Flash Point (Method Used)         N/AFlammable Limits        N/ALEL        N/A
UEL        N/A
Extinguishing Media
Special Fire Fighting Procedures
Unusual Fire and Explosion Hazards
(Reproduced in June 1999 By Ohio Ready Mixed Concrete Association)Based on OSHA 174, Sept. 1985

Section V - Reactivity Data
StabilityUnstable Conditions to Avoid 
 StableXHowever the product stiffens and hardens in 2 to 8 hours and is no longer hazardous 
Incompatibility (Materials to Avoid)  None 
Hazardous Decomposition or Byproducts   Product hardens in a few hours and then does not decompose
May Occur Conditions to Avoid    None
 Will Not OccurX 

Section VI - Health Hazard Data
Route(s) of Entry:Inhalation?
Health Hazards (Acute and Chronic)
Acute - Wet plastic, unhardened concrete can dry the skin and cause alkali burns
Chronic - Hypersinsitive individuals may develop an allergic dermatitis - Portland cement may contain trace amounts of chromium 
IARC Monographs?
OSHA Regulated?
Carcinogenic Potential: Concrete frequently contains crystalline silica in concentrations greater than 0.1% principally contributed by the aggregates. Respirable crystalline silica is classified by IARC (International Agency for Research on Cancer) as a known human carcinogen and by NTP (National Toxicology Program) as "reasonably anticipated to be a carcinogen." Crystalline silica in wet concrete is not respirable and does not pose a hazard when the concrete is in its plastic or unhardened state. Once concrete has hardened, long term exposure to airborne dust generated by grinding, sawing, drilling or breaking of hardened concrete, could potentially lead to hazardous exposures to workers and subsequent health related problems. Appropriate respiratory protection should be worn during these operations. 
Signs and Symptoms of Exposure
Irritation of skin and burning sensation particularly when exposure is in an area of skin previously subjected to abrasion or irritation
Medical Conditions Generally Aggravated by Exposure
Open wounds or sores
Emergency and First Aid Procedures
Irrigate eyes with water. Wash expossed areas of the body with soap and water - change clothing if contaminated with wet concrete 

Section VII - Precautions for Safe Handling and Use
Steps to Be Taken in Case Material is Released or Spilled
Spill does not increase hazard 
Waste Disposal Method
Material can be retained until it hardens when it can be disposed of as a common waste
Precautions to Be taken in Handling and Storing
Use barrier creams, gloves, boots and clothing to protect the skin from prolonged contact with plastic concrete. Particularly avoid abrasion of the skin in contact with unhardened plastic concrete. 
Other Precautions
Precautions must be observed because cement burns occur with little warning - little heat is sensed. Eye protection is not generally required, except when placing methods cause splash, then tight fitting goggles should be used. 

Section VIII - Control Measures
Respiratory Proctection (Specify Type)   Not required
Ventilation  N/ALocal Exhaust   NoneSpecial   None
 Mechanical (General)    NoneOther     N/A
Protective Gloves     Yes - waterproofEye Protection   Yes - tight fitting goggles
Other Protective Clothing or Equipment   Waterproof boots, long-sleeved shirt and full length trousers should be worn
Work/Hygienic Practices   Avoid contact between skin/eyes and wet/moist concrete
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