Material Safety Data Sheet for Calcium Oxide

Flammability 0 Health 1

Reactivity 1 S pecific Hazard

Calcium Oxide

Material Safety Data Sheet for Calcium Oxide

--------------------------------------------------------------------------------------------------------------------------Section I - Identity --------------------------------------------------------------------------------------------------------------------------Manufacturer's name and address:

Ash Grove Cement Company 8900 Indian Creek Parkway P. O. Box 25900 Overland Park, KS 66225 Emergency Telephone Number: (913) 451-8900 Information Telephone Number: (913) 451-8900 Chemical Name and Synonyms:

Calcium oxide, CaO, quicklime, lime, unslaked lime

Trade Name and Synonyms: CAS No.:

Pebble Quicklime, Cal-Max 1305-78-8

Date Revised:

July 2000

--------------------------------------------------------------------------------------------------------------------------Section II - Hazardous Ingredients ---------------------------------------------------------------------------------------------------------------------------

Quicklime, CaO Quartz, crystalline silica

CAS Number

OSHA PEL

ACGIH TLV

1305-78-8

5 mg/m3

2 mg/m3

14808-60-7

PEL =

10mg/m3 % SiO2*+2

0.05 mg/m3*

Calcium oxide may contain greater than 0.1% quartz, crystalline silica. Chronic exposure above the allowed limit to the respirable dust of materials containing crystalline silica or quartz may cause silicosis. *Respirable fraction ACGIH American Conference of Governmental Industrial Hygienists OSHA Occupational Safety and Health Administration PEL Permissible Exposure Limit TLV Threshold Limit Value

Ash Grove Cement Company Calcium Oxide - Page 2

--------------------------------------------------------------------------------------------------------------------------Section III - Chemical and Physical Data --------------------------------------------------------------------------------------------------------------------------Chemical Family: Inorganic Base Evaporation Rate: Not Applicable Molecular Weight: 56.10 Boiling Point: 5162 oC Melting Point: 4737οF Specific Gravity: 3.2-3.4 Vapor Density: (Air=1) Not Applicable Solubility in Water: 0.131 g/100 ml at 10oC; 0.07 g/100 ml at 80oC Appearance and Odor: White granular or powder; faint earthy odor

--------------------------------------------------------------------------------------------------------------------------Section IV - Fire and Explosion Hazard Data --------------------------------------------------------------------------------------------------------------------------Flash Point: Not Applicable; calcium oxide is noncombustible and not explosive. Flammable or Explosive Limits: Not Applicable

LEL: Not Applicable

UEL: Not Applicable

Extinguishing Media: Not Applicable Special Fire Fighting Procedures: Calcium oxide in itself is incombustible. In contact with water, product will hydrate evolving heat. Warning: Sufficient heat can be created during hydration to ignite paper, wood, rags or other combustible materials. CAUTION: Saturated water solutions of calcium oxide can have pH of 12-12.49. See Section VII for appropriate precautions. Firefighting Media: Dry chemical, flooding quantities of water as spray, foam. For larger fires, use water spray, fog or alcohol foam. DO NOT use carbon dioxide or halogenated extinguishing agents. CAUTION: Saturated water solutions of hydrated lime can have pH of 12-12.49 at temperatures of 25oC or above. See Section VII for appropriate precautions. Unusual Fire and Explosion Hazards: Heat generated from reaction with water can start fires.

--------------------------------------------------------------------------------------------------------------------------Section V - Health Hazard Data --------------------------------------------------------------------------------------------------------------------------Calcium Oxide can contain quartz greater than 0.1%. Chronic exposure by inhalation to respirable size quartz dust at levels exceeding exposure limits has caused silicosis, a serious and progressive pneumoconiosis which can be disabling and in extreme instances, lead to death. Symptoms may appear at any time, even years after exposure has ceased. These symptoms may include shortness of breath, difficulty in breathing, coughing, diminished work capacity, reduction of lung volume and right heart enlargement and/or failure. The only reliable method of detecting silicosis is through a chest x-ray. Silicosis may aggravate other chronic pulmonary conditions and may increase the risk of pulmonary tuberculosis infection. Smoking aggravates the effects of silica exposure. The International Agency for Research in Cancer (IARC) has determined that quartz crystalline silica is carcinogenic to humans when inhaled from occupational sources.

--------------------------------------------------------------------------------------------------------------------------Section V - Health Hazard Data - (Continued)

Ash Grove Cement Company Calcium Oxide - Page 3

--------------------------------------------------------------------------------------------------------------------------Route(s) of Entry: Inhalation; skin; eyes; ingestion 1.

2.

3.

4.

Inhalation: corrosive a. Acute exposure: Inhalation of low concentrations may cause sore throat, coughing, choking, dyspnea, and variable symptoms of headache, dizziness, and weakness. Intense exposures may result in tightness in the chest and delayed pulmonary edema. The solubility of the substance allows further penetration that may continue for several days. b. Chronic exposure: Bronchial irritation with chronic cough is common; chronic overexposure may result in silicosis. c. First aid: Remove from exposure; move to fresh air immediately. Keep affected person warm and at rest. Get medical attention. Skin contact: corrosive a. Acute exposure: During prolonged skin contact the substance can penetrate the unprotected skin slowly, producing soft, necrotic, deeply penetrating areas on contact. The solubility allows further penetration that may continue for several days. The extent of damage depends on duration of contact. b. Chronic exposure: A chronic dermatitis may follow repeated contact. c. First aid: Remove contaminated clothing and shoes immediately. Wash affected area with soap or mild detergent and large amounts of water until no evidence of chemical remains (approximately 15-20 minutes). In the case of chemical burns, cover the affected areas with sterile, dry dressing. Bandage securely, but not too tightly. Get medical attention. Eye contact: corrosive a. Acute exposure: Direct contact with the solid or aqueous solutions may cause conjunctival edema and corneal destruction which can lead to and may cause blindness. b. Chronic exposure: Prolonged contact may cause conjunctivitis. c. First aid: Wash eyes immediately with large amounts of water, occasionally lifting the upper and lower lids, until no evidence of chemical remains (approximately 15-20 minutes). Get medical attention immediately. Administration of drugs to the eyes should be performed by qualified medical personnel. Ingestion: corrosive. If ingested, consult a physician immediately.

Calcium Oxide listed as an OSHA Carcinogenic: NO By NTP: NO By IARC: N O Quartz listed as an OSHA Carcinogen: NO By NTP: YES (Group 2A) By IARC: YES (Group 1) Medical conditions generally aggravated by exposure: other skin disorders may be aggravated by exposure.

Respiratory disorders or diseases, dermatitis or

--------------------------------------------------------------------------------------------------------------------------Section VI - Reactivity Data --------------------------------------------------------------------------------------------------------------------------Stability: Reacts rapidly with water to produce heat and form calcium hydroxide. Will gradually react with the carbon dioxide in air to form calcium carbonate; stable in absence of moisture and carbon dioxide. Conditions to avoid: Contact with water, acids. Incompatibility (materials to avoid): May react violently and incandescently with boric oxide, hydrogen fluoride, phosphorous pentoxide, chlorine trifluoride, and fluorine. Reaction with halogenated compounds may cause ignition. Hazardous Polymerization: Will not occur. Hazardous Decomposition or By-Products: None.

--------------------------------------------------------------------------------------------------------------------------Section VII - Precautions for Safe Handling and Use -

Ash Grove Cement Company Calcium Oxide - Page 4

---------------------------------------------------------------------------------------------------------------------------

Saturated solutions of calcium oxide ("Milk of Lime") can have pH of 12-12.49 at 25oC or above, corrosive to unprotected skin and eyes. Such solutions may be created during fire fighting. Tight fitting goggles and gloves, boots and other personal protective equipment (PPE) must be used to prevent skin and eye contact. PPE resistant to permeation and penetration by lime water must be chosen. Handling: Use protective equipment as described above in this section. Storage: Protect product against physical damage and store in a dry place away from water or moisture. Steps to be taken in case material is released or spilled: Do not touch spilled material. Stop leak if possible without risk. For small spills, take up with absorbent material and place into containers for later disposal. For small dry spills, shovel material into clean, dry container and cover. Move containers from spill area. For large spills, dike far ahead of spill for later disposal. Dispose of in accordance with all local, state and federal requirements. Spills should not be flushed to surface waters or sewers.

--------------------------------------------------------------------------------------------------------------------------Section VIII - Control Measures --------------------------------------------------------------------------------------------------------------------------Ventilation: Enclose all dusty processes; use local exhaust ventilation; use ventilation to vent dust to collector. Personal Protective Equipment (PPE): Use a NIOSH-approved (42 CFR 84) respirator with dust filtering capability for protection against airborne calcium oxide. Use gauntlet type work gloves and tight fitting goggles. Long sleeve shirts and long pants should be worn. Protective barrier creams may be used on exposed skin surfaces. Refer to Section VII for protection against exposure to solutions of calcium oxide. Work/Hygienic Practices: Immediately after working with calcium oxide, workers should shower with soap and water. This product neither contains nor is directly manufactured with any controlled ozone depleting substances, Class I and II.