QUICKLIME

1. IDENTIFICATION OF THE SUBSTANCE AND OF THE COMPANY
1.1. Identification of the substance
Substance name
Quicklime
Synonyms
Lime, Burnt lime, Un-slaked lime, Building lime, Fat lime, Chemical lime, Fluxing lime, Hard burnt lime, Soft burnt lime, Pebble lime, Calcium oxide, Quick lime.
This list may not be exhaustive.
Chemical name and formula
Calcium oxide – CaO
Trade Name
To be filled in for the concerned country
CAS n°
1305-78-8
EINECS n°
215-138-9
Molecular weight
56,08
1.2. Material use
- Building material industry: mortar, rendering, silica brick, aerated concrete, refractories
- Chemical industry: catalyst, neutralisation, pH-adjustment
- Steel industry: fluxes, refining
- Agriculture: fertiliser
- Biocidal use
- Environmental protection: flue gas treatment, waste water treatment, sludge treatment
- Drinking water treatment: pH-value, decarbonisation, softening, hardening
- Feed, food and pharmaceutical industries: nutrition, additive, sugar refining
- Civil engineering: soil stabilisation
- Paper and paint industry
- Glass industry
Please note that this list may not be exhaustive.
1.3. Company identification
CARMEUSE COORDINATION CENTER
Bld de Lauzelle 65
B-138 Louvain-la-Neuve - Belgique
Tel +32-10-481600 Fax +32-10-481666
1.4. Emergency telephone
European Emergency N°
112
National centre for Prevention and Treatment of Intoxications N°
To be filled in for the concerned country
Fire brigade / SAMU N°
To be filled in for the concerned country
2. COMPOSITION / INFORMATION ON INGREDIENTS
2.1. Composition / information on ingredients
Calcium oxide, small quantities of calcium carbonate, calcium dihydroxide, magnesium oxide, silicon oxide, aluminium oxide, iron oxide and trace elements. Product is obtained from natural minerals; purity level may vary according to their origins.
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2.2. Chemical characterization
2.2.1. : CAS N°
1305-78-8
2.2.2. : Chemical name
Calcium oxide
2.2.5. : EINECS N°
215-138-9
3. HAZARD IDENTIFICATION
3.1. Indication of hazard
Xi Irritant
3.2. Human health
Risk phrases
R37 Irritating to respiratory system
R38 Irritating to skin
R41 Risk of serious damage to eyes
Warning phrase
In contrast to the powder itself, the product, when diluted with water, can produce severe skin damage in humans (alkaline burns), especially if prolonged skin contacts take place.
4. FIRST-AID MEASURES
4.1. Eyes
Immediately flush eyes with water (saline solution is preferred) for at least 15 to 20 minutes. Seek medical attention. Quick response is essential
4.2. Inhalation
Move source of dust or move affected person to fresh air. Seek medical attention immediately.
4.3. Ingestion
Wash mouth with water and drink copious quantities of water. Do not induce vomiting. Seek medical advice immediately.
4.4. Skin
Carefully and gently brush the contaminated body surfaces in order to remove all traces of product. Wash affected area immediately with plenty of water. Remove contaminated clothing.
4.5. General advise
No known delayed effects. Consult a physician for all exposures except for minor instances.
5. FIRE-FIGHTING MEASURES
5.1. Flammability
The substance is not flammable, and non-combustible, it inhibits the spread of flame. The product reacts with water and generates heat. This may cause risk to flammable material.
5.2. Extinguishing media
The product does not burn. Avoid water and the humidification of the quicklime, use dry powder, foam or CO2 type of fire extinguishers to fight the surrounding fire.
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5.3. Combustion products
None
6. ACCIDENTAL RELEASE MEASURES
6.1. Personal precautions
Avoid contact with skin and eyes, keep dust levels to a minimum, and ensure that sufficient ventilation or suitable respiratory protective equipment is used (Section 8).
6.2. Environmental precautions
Contain the spillage. Keep the material dry if possible. Cover area if possible to avoid unnecessary dust hazard. Avoid uncontrolled spills to watercourses and drains (pH rising). Any large spillage into watercourses must be alerted to the Environment Agency or other regulatory body.
6.3. Methods for cleaning up
Keep the material dry if possible. Pick up the product mechanically in a dry way. Use vacuum suction unit, or shovel into bags.
7. HANDLING AND STORAGE
7.1. Handling
Precautions for safe handling
Avoid contact with skin and eyes. Wear protective equipment (see section 8). Keep dust levels to a minimum. Minimise dust generation. Enclose dust sources, use exhaust ventilation (dust collector at handling points). Handling systems should preferably be enclosed. When handling bags usual precautions should be paid to the risks outlined in the Manual Handling Operations Regulations.
7.2. Storage
Precautions for safe storage
Store under dry conditions. Minimise contact with air and moisture. Bulk storage should be in purpose – designed silos. Keep away from acids, significant quantities of paper, straw, and nitro compounds. Keep out of reach of children. Do not use aluminium for transport or storage if there is a risk of contact with water.
8. EXPOSURE CONTROLS / PERSONAL PROTECTION
8.1. Exposure limit values
8.1.1. CAS N° / EINECS N°
1305-78-8 / 215-138-9
8.1.2. Chemical name
Calcium oxide
8.1.3. Occupational exposure standard (OES)
To be checked for the concerned country. Usually 2 mg/m³.
8.2. Exposure controls
8.2.1. Occupational exposure controls
Handling systems should preferably be enclosed or suitable ventilation installed to maintain atmospheric dust below the OES, if not wear suitable protective equipment.
8.2.1.1. Respiratory protection
Use approved dust respirators to EN 149 category FFP2, or air stream-helmet for heavy exposure.
Use approved nitrile impregnated gloves having CE marks.
8.2.1.2. Hand protection
Tight fitting EN 166 standard goggles with side shields, or wide vision full goggles. Do not wear contact lenses when handling this product. It is also advisable to have individual pocket eyewash.
8.2.1.3. Eye protection
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8.2.1.4. Skin protection
Clothing fully covering skin, full length pants, long sleeved overalls, with close fittings at openings. Footwear resistant to caustics, and avoiding dust penetration.
8.2.1.5. General safety and hygiene measure
Wear clean, dry personal protective equipment.
Barrier cream can be used if necessary.
If heavily exposed daily, employees must shower, and if necessary use a barrier cream to protect exposed skin, particularly neck, face and wrists.
8.2.2. Environmental exposure controls
All ventilation systems should be filtered before discharge to atmosphere.
9. PHYSICAL AND CHEMICAL PROPERTIES
9.1. General information
9.1.1. Appearance
White or off white (beige) solid material of varying sizes: Lump, granular or fine powder.
9.1.2. Odour
Slight earthy odour.
9.2. Important health, safety and environmental information
Remark
Calcium oxide reacts exothermically with water to form Calcium hydroxide:
CaO + H2O �� Ca(OH)2 + 1155 kJ/kg CaO
pH
12,4 Ca(OH)2 saturated solution at 25°C
Solubility in water
1850 mg/l at 0°C
1650 mg/l at 20°C
770 mg/l at 100°C
Solubility
Soluble in ammonium salts, acids and glycerine.
Insoluble in alcohol.
9.3. Other information
Melting point
2570°C
Boiling point
2850°C at 100 hPa
Specific gravity
3,3 – 3,4 g/cm³ at 20°C
Bulk density
700 – 1300 kg/m³ at 20°C
Vapour pressure
Non volatile
Partition coefficient
Not applicable
Flash point
Not applicable
Flammability
Not flammable
Explosive properties
Not flammable
10. STABILITY AND REACTIVITY
10.1. Conditions to avoid
Minimise exposure to air and moisture to avoid degradation.
10.2. Materials to avoid
Calcium oxide reacts exothermically with water to form Calcium hydroxide:
CaO + H2O �� Ca(OH)2 + 1155 kJ/kg CaO
Calcium oxide reacts exothermically with acids to form Calcium salts.
Calcium oxide reacts with aluminium and brass in the presence of moisture leading to the production of hydrogen:
CaO + 2 Al + 7 H2O → Ca(Al(OH)4)2 + 3 H2
10.3. Additional remarks
Calcium oxide absorbs moisture and carbon dioxide from air to form calcium carbonate, which is a common substance in nature.
11. TOXICOLOGICAL INFORMATION
11.1. Acute effect
Eye contact
Risk of serious damage to eyes.
Inhalation
Inhalation of dust causes discomfort to the upper respiratory tract. Irritant to the respiratory tract in high concentration of dust.
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Ingestion
Calcium oxide is not toxic. Large amounts may cause irritation to the gastrointestinal tract.
Skin contact
Irritating to skin in the presence of moisture.
11.2. Long term exposure
Eye contact
Risk of serious damage to eyes.
Inhalation
Prolonged and repeated inhalation of dust may affect the respiratory tract.
Skin contact
In case of prolonged skin contact, product may cause serious damage to skin in combination with moisture.
12. ECOLOGICAL INFORMATION
12.1. Ecotoxicity
12.1.1. Acute/Prolonged toxicity to fish
On C. carpio LC50 = 1070 mg/l for 96 hours, the substance is non-toxic because the LC50-value is > 100mg/l.
12.1.2. Acute/Prolonged toxicity to aquatic invertebrates
On aquatic crustacea LC50 = 160 mg/l for 24 hours.
12.1.3. Acute/Prolonged toxicity to aquatic plants
No test data
12.1.4. Toxicity to micro-organisms, e.g., bacteria
At high concentration, through the rise of temperature and pH, calcium oxide is used for disinfection of sewage sludge.
12.1.5. Chronic toxicity to aquatic organisms
No data
12.1.6. Toxicity to soil dwelling organisms
No data
12.1.7. Toxicity to terrestrial plants
No data however calcium oxide is used as a fertiliser.
12.1.8. General effect
Acute pH effect. Although this product is useful to correct water acidity, an excess of more than 1 g/l may be harmful to aquatic life.
pH value of > 12 will rapidly decrease as result dilution and carbonation.
12.2. Mobility
Calcium oxide reacts with water and/or carbon dioxide to form respectively calcium hydroxide and/or calcium carbonate, which are sparingly soluble, and so present a low mobility in most ground. Moreover those products are used as fertilisers.
12.3. Persistence and degradability
Calcium oxide reacts with moisture and carbon dioxide to form calcium carbonate, which is a common substance in nature.
12.4. Bioaccumulative potential
No bioaccumulation detectable. Degradation products, soluble calcium compounds and calcium carbonate are naturally found in the ecosystem.
13. DISPOSAL CONSIDERATIONS
Waste identification code according list of waste
Waste resulting of this product is not considered as dangerous according to the European Council decision of January 16, 2001, modifying the 2000/532/EC decision about the list of wastes (101304).
14. TRANSPORT INFORMATION
14.1. Transport consideration
14.1.1. Classification
Not classified as hazardous for transport.
14.1.2. ADR (Road)
Not subject to identification
14.1.3. RID (Rail)
Not subject to identification
14.1.4. IMDG / GGVSea (Sea)
Not subject to identification
14.1.5. IATA-DGR / ICTAO-TI(Air)
UN Code 1910 – Class 8 – Packaging Group PG III
14.2. Special precaution
Avoid any release of dust during transportation, by using tight tanks for powders and covered trucks for pebbles.
15. REGULATORY INFORMATION
15.1. Labelling according to EEC-directives
15.1.1. Symbol and classification of the substance
Xi Irritant
15.1.2. Restriction of marketing and employment
None
15.1.3. National regulations
None
16. OTHER INFORMATION
16.1. Risk phrases
R37 Irritating to respiratory system
R38 Irritating to skin
R41 Risk of serious damage to eyes
In contrast to the powder itself, the product, when diluted with water, can produce severe skin damage in humans (alkaline burns), especially if prolonged skin contacts take place.
16.2. Safety phrases
S2 Keep out of reach of children
S25 Avoid contact with eyes
S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S37 Wear suitable gloves
S39 Wear eye/face protection
16.3. Further information
This safety data sheet supplements the technical use instructions without replacing them. The information contained therein is based on the state of our knowledge regarding the product, at the mentioned date. They are provided in good faith. The users' attention is however drawn to eventual risks when the product is used for other purposes than those it is designed for. It does not exempt the user from knowing and applying all texts regulating his activity. It will be his sole responsibility to take all necessary precautions when using the product.
16.4. Guidance and references
Data sheet prepared in accordance with Directive 91/155/EEC modified by Directives 93/112/EEC, 99/45/EC and 2001/58/EC.
References:
IUCLID Dataset –2000
The Merck Index (Ed. Merck & Co, Rahway, USA)