microbiology

Topics: Cement, Concrete, Portland cement Pages: 7 (2157 words) Published: October 28, 2014
MATERIAL SAFETY DATA SHEET (MSDS)
FOR PORTLAND CEMENT
(Complies with OSHA and MSHA Hazard Communication Standards, 29 CFR 1910.1200and 30 CFR Part 47)

CEMEX, INC.
CEMEX CALIFORNIA CEMENT LLC
VICTORVILLE CEMENT PLANT
16888 NORTH "E" STREET
VICTORVILLE, CALIFORNIA 92394-2999

Section 1 - IDENTIFICATION
Supplier/Manufacturer

Emergency Contact Information

CEMEX, Inc.
CEMEX California Cement LLC
Victorville Cement Plant
16888 North "E" Street
Victorville, California 92394-2999

(619) 381-7600

Chemical name and synonyms

Product name

Portland Cement (CAS #65997-15-1)

"CEMEX Type I/II"
"CEMEX Type III"
“CEMEX Type II/V”
"CEMEX Type V"
"CEMEX Block"
"CEMEX Class G"

Chemical family

Formula

Calcium salts.

3CaO.SiO2
2CaO.SiO2
3CaO.Al2O2
4CaO..Al2O3Fe2O3
CaSO2.2H2O

Other salts:

(CAS #12168-85-3)
(CAS #10034-77-2)
(CAS #12042-78-3)
(CAS #12068-35-8)
(CAS #13397-24-5)

Small amounts of MgO, and trace amounts of K2SO4 and Na2SO4 may also be present.

Section 2 - COMPONENTS
Hazardous Ingredients
Portland cement clinker (CAS# 65997-15- 1) - approximately - 93.5-96.0 % by weight ACGIH TLV-TWA (2000) = 10 mg total dust/m3
OSHA PEL (8-hour TWA) = 50 million particles/ft3
Gypsum (CAS# 7778-18-9) - approximately - 4.0-6.5 % by weight ACGIH TLV-TWA (2000) = 10 mg total dust/m3
OSHA PEL (8-hour TWA) = 15 mg total dust/m3
OSHA PEL (8-hour TWA) = 5 mg respirable dust/m3
Respirable quartz (CAS# 14808-60-7) – greater than 0.1% by weight ACGIH TLV-TWA (2000) = 0.05 mg respirable quartz dust/m3
OSHA PEL (8-hour TWA) = (10 mg respirable dust/m3)/(percent silica + 2) Trace Ingredients
Trace amounts of naturally occurring chemicals might be detected during chemical analysis. Trace constituents may include up to 0.75% insoluble residue, some of which may be free crystalline silica, calcium oxide (Also known as lime or quick lime), magnesium oxide, potassium sulfate, sodium sulfate, chromium compounds, and nickel compounds.

Section 3 - HAZARD IDENTIFICATION
Emergency Overview
Portland cement is a light gray powder that poses little immediate hazard. A single short-term exposure to the dry powder is not likely to cause serious harm. However, exposure of sufficient duration to wet portland cement can cause serious, potentially irreversible tissue (skin or eye) destruction in the form of chemical (caustic) burns. The same type of tissue destruction can occur if wet or moist areas of the body are exposed for sufficient duration to dry portland cement. Potential Health Effects

Relevant Routes of Exposure:
Eye contact, skin contact, inhalation, and ingestion.
Effects Resulting from Eye Contact:
Exposure to airborne dust may cause immediate or delayed irritation or inflammation. Eye contact by large amounts of dry powder or splashes of wet portland cement may cause effects ranging from moderate eye irritation to chemical burns or blindness. Such exposures require immediate first aid (see Section 4) and medical attention to prevent significant damage to the eye. Effects Resulting from Skin Contact:

Discomfort or pain cannot be relied upon to alert a person to hazardous skin exposure. Consequently, the only effective means of avoiding skin injury or illness involves minimizing skin contact, particularly with wet cement. Exposed persons may not feel discomfort until hours after the exposure has ended and significant injury has occurred. Dry portland cement contacting wet skin or exposure to moist or wet portland cement may cause more severe skin effects including thickening, cracking or fissuring of the skin. Prolonged exposure can cause severe skin damage in the form of (alkali) chemical burns.

Some individuals may exhibit an allergic response upon exposure to portland cement, possibly due to trace elements of chromium. The response may appear in a variety of forms ranging from a mild rash to severe skin ulcers. Persons already sensitized may react to their first contact with...
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