Safety Data Sheet
Calcium Hydroxide
Revision 3, Date 01 Feb 2015
1. IDENTIFICATION
Product Name
Calcium Hydroxide
Other Names
CALCIUM HYDROXIDE (Ca(OH)2); Hydrated Lime; Slaked Lime
Uses
Mortar, plasters, cements, calcium salts, ammonia recovery in gas manufacture, disinfectant, water softening, food
additive as buffer and neutralising agent.
Chemical Family
No Data Available
Chemical Formula
Ca(OH)2
Chemical Name
Calcium Hydroxide
Product Description
No Data Available
Contact Details of the Supplier of this Safety Data Sheet
Organisation
Location
Telephone
Redox Pty Ltd
2 Swettenham Road
Minto NSW 2566
Australia
+61-2-97333000
Redox Pty Ltd
11 Mayo Road
Wiri Auckland 2104
New Zealand
+64-9-2506222
Redox Inc.
2132A E. Dominguez Street
Carson CA 90810
USA
+1-424-675-3200
Redox Chemicals Sdn Bhd
Level 2, No. 8, Jalan Sapir 33/7
Seksyen 33, Shah Alam Premier Industrial Park
40400 Shah Alam
Sengalor, Malaysia
+60-3-5614-2111
Emergency Contact Details
For emergencies only; DO NOT contact these companies for general product advice.
Organisation
Location
Telephone
Poisons Information Centre
Westmead NSW
1800-251525
131126
Chemcall
Australia
1800-127406
+64-4-9179888
Chemcall
Malaysia
+64-4-9179888
Chemcall
New Zealand
0800-243622
+64-4-9179888
National Poisons Centre
New Zealand
0800-764766
CHEMTREC
USA & Canada
1-800-424-9300 CN723420
+1-703-527-3887
2. HAZARD IDENTIFICATION
Poisons Schedule (Aust)
No Data Available
Globally Harmonised System
Redox Pty Ltd
Corporate Office Sydney
Locked Bag 15 Minto NSW 2566 Australia
2 Swettenham Road Minto NSW 2566 Australia
All Deliveries: 4 Holmes Road Minto NSW 2566 Australia
Form 21047, Revision 3, Page 1 of 10, 16-Jun-2017 02:08:16
Phone
Fax
E-mail
Web
ABN
+61 2 9733 3000
+61 2 9733 3111
[email protected]
www.redox.com
92 000 762 345
Australia
Adelaide
Brisbane
Melbourne
Perth
Sydney
New Zealand
Auckland
Christchurch
Hawke’s Bay
Malaysia
Kuala Lumpur
USA
Los Angeles
Safety Data Sheet Calcium Hydroxide Revision 3, Date 01 Feb 2015
Hazard Classification
Hazardous according to the criteria of the Globally Harmonised System of Classification and Labelling of
Chemicals (GHS)
Hazard Categories
Specific Target Organ Toxicity (Single Exposure) - Category 3
Skin Corrosion/Irritation - Category 2
Serious Eye Damage/Irritation - Category 1
Pictograms
Signal Word
Danger
Hazard Statements
H315
Causes skin irritation.
H318
Causes serious eye damage.
H335
May cause respiratory irritation.
H336
May cause drowsiness or dizziness.
General
P102
Keep out of reach of children.
Prevention
P261
Avoid breathing dust/fumes.
P280
Wear protective gloves/protective clothing/eye protection/face protection.
P302 + P352
IF ON SKIN: Wash with plenty of soap and water.
P304 + P340
IF INHALED: Remove victim to fresh air and keep at rest in a position
comfortable for breathing.
P305 + P351 + P338
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact
lenses, if present and easy to do. Continue rinsing.
P501
Dispose of contents/container in accordance with local / regional / national /
international regulations.
Precautionary Statements
Response
Disposal
National Transport Commission (Australia)
Australian Code for the Transport of Dangerous Goods by Road & Rail (ADG Code)
Dangerous Goods Classification
NOT Dangerous Goods according to the criteria of the Australian Code for the Transport of Dangerous
Goods by Road & Rail (ADG Code)
Environmental Protection Authority (New Zealand)
Hazardous Substances and New Organisms Amendment Act 2015
HSNO Classifications
Health
Hazards
Environmental
Hazards
8.2C
Substances that are corrosive to dermal tissue UN PGIII
8.3A
Substances that are corrosive to ocular tissue
9.1D
Substances that are slightly harmful to the aquatic environment or are otherwise
designed for biocidal action
3. COMPOSITION/INFORMATION ON INGREDIENTS
Ingredients
Chemical Entity
Formula
CAS Number
Proportion
Calcium Hydroxide
No Data Available
1305-62-0
>=95.0 %
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Safety Data Sheet Calcium Hydroxide Revision 3, Date 01 Feb 2015
4. FIRST AID MEASURES
Description of necessary measures according to routes of exposure
Swallowed
Clean mouth with water and drink afterwards plenty of water. Do NOT induce vomiting. Obtain medical
attention.
Eye
Immediately wash in and around the eye area with large amounts of water for at least 15 minutes. Eyelids to be held
apart. Remove clothing if contaminated and wash skin. Urgently seek medical assistance. Transport to hospital or
medical centre.
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. If necessary seek medical
advice.
Inhaled
Remove victim from area of exposure - avoid becoming a casualty. Remove contaminated clothing and loosen
remaining clothing. Allow patient to assume most comfortable position and keep warm. Keep at rest until fully
recovered. Seek medical advice if effects persist.
Advice to Doctor
Most important symptoms and effects, both acute and delayed :
Calcium dihydroxide is not acutely toxic via the oral, dermal, or inhalation route. The substance is
classified as irritating to skin and the respiratory tract, and entails a risk of serious damage to the eye.
There is no concern for adverse systemic effects because local effects (pH-effect) are the major health
hazard.
Medical Conditions Aggravated
by Exposure
Persons with pre-existing skin problems or impaired respiratory function may be more susceptible to the effects of
this substance.
5. FIRE FIGHTING MEASURES
General Measures
Clear fire area of all non-emergency personnel. Stay upwind. Keep out of low areas. Eliminate ignition sources.
Move fire exposed containers from fire area if it can be done without risk.
Flammability Conditions
Product is a non-flammable solid. Non-combustible material.
Extinguishing Media
Not combustible, however, if material is involved in a fire use: Fine water spray, normal foam, dry agent (carbon
dioxide, dry chemical powder).
Do not use water.
Hazardous Products of
Combustion
Caustics fumes of calcium oxide form when heated to decomposition (580 deg C).
Special Fire Fighting
Instructions
Do NOT allow fire fighting water to reach waterways, drains or sewers. Store fire fighting water for treatment.
Personal Protective Equipment
Fire fighters to wear self-contained breathing apparatus and suitable protective clothing if risk of exposure to
products of decomposition.
Flash Point
No Data Available
Lower Explosion Limit
No Data Available
Upper Explosion Limit
No Data Available
Auto Ignition Temperature
No Data Available
Hazchem Code
No Data Available
6. ACCIDENTAL RELEASE MEASURES
General Response Procedure
Avoid accidents, clean up immediately. Slippery when spilled. Eliminate all sources of ignition. Increase ventilation.
Avoid generating dust. Stop leak if safe to do so. Isolate the danger area. Use clean, non-sparking tools and
equipment.
Clean Up Procedures
Contain and sweep/shovel up spills with dust binding material or use an industrial vacuum cleaner. Transfer to a
suitable, labelled container and dispose of promptly as hazardous waste.
Containment
Stop leak if safe to do so. Isolate the danger area.
Decontamination
Do not flush caustic residues to the sewer. Residues from spills can be diluted with water, neutralized with dilute acid
such as acetic, hydrochloric or sulfuric. Absorb neutralized caustic residue on clay, vermiculite or other inert
substance and package in a suitable container for disposal.
Environmental Precautionary
Measures
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 increase). Any large spillage into
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Safety Data Sheet Calcium Hydroxide Revision 3, Date 01 Feb 2015
watercourses must be alerted to the Environment Agency or other regulatory body.
Evacuation Criteria
Evacuate all unnecessary personnel.
Personal Precautionary
Measures
Personnel involved in the clean up should wear full protective clothing as listed in section 8.
7. HANDLING AND STORAGE
Handling
Ensure an eye bath and safety shower are available and ready for use. Observe good personal hygiene practices and
recommended procedures. Wash thoroughly after handling. Take precautionary measures against static discharges
by bonding and grounding equipment. Avoid contact with eyes, skin and clothing. Do not inhale product dust/fumes.
Storage
Store in a cool, dry, well-ventilated area. The substance should be stored under dry conditions. Any contact with air
and moisture should be avoided. Do not use aluminium for transport or storage if there is a risk
of contact with water.
Keep containers tightly closed when not in use. Inspect regularly for deficiencies such as damage or leaks. Protect
against physical damage. Store away from incompatible materials as listed in section 10. Keep out of direct sunlight.
Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe
all warnings and precautions listed for the product. This product is not classified dangerous for transport according
to The Australian Code for the Transport of Dangerous Goods By Road and Rail.
Container
Container type/packaging must comply with all applicable local legislation.
Store in original packaging as approved by manufacturer.
8. EXPOSURE CONTROLS / PERSONAL PROTECTION
General
The following exposure standard has been established by The Australian Safety and Compensation Council (ASCC);
Calcium Hydroxide CAS 1305-62-0:
TWA = 5mg/m3
NOTE: The exposure value at the TWA is the average airborne concentration of a particular substance when
calculated over a normal 8 hour working day for a 5 day working week.
These exposure standards are guides to be used in the control of occupational health hazards. All atmospheric
contamination should be kept to as low a level as is workable. These exposure standards should not be used as fine
dividing lines between safe and dangerous concentrations of chemicals. They are not a measure of relative toxicity.
Exposure Limits
No Data Available
Biological Limits
PNEC aqua = 490 µg/l
PNEC soil/groundwater = 1080 mg/l
Engineering Measures
A system of local and/or general exhaust is recommended to keep employee exposures as low as possible. Local
exhaust ventilation is generally preferred because it can control the emissions of the contaminant at its source,
preventing dispersion of it into the general work area.
Personal Protection Equipment
RESPIRATOR: If dust exists, wear dust mask/respirator (AS1715/1716).
EYES: Use chemical safety goggles and/or full face shield where dusting or splashing of solutions is possible.
Maintain eye wash fountain and quick-drench facilities in work area (AS1336/1337).
HANDS: Wear rubber or PVC gloves (AS2161).
CLOTHING: Long-sleeved impervious protective clothing, including boots, gloves, lab coat, apron or coveralls, as
appropriate, to prevent skin contact (AS3765/2210).
Work Hygienic Practices
Avoid inhalation or ingestion and contact with skin and eyes. General occupational hygiene measures are
required to ensure safe handling of the substance. These measures involve good personal and housekeeping
practices (i.e. regular cleaning with suitable cleaning devices), no drinking, eating and smoking at the
workplace. Shower and change clothes at end of work shift. Do not wear contaminated clothing at home.
9. PHYSICAL AND CHEMICAL PROPERTIES
Physical State
Solid
Appearance
Powder
Odour
Odourless
Colour
White or off white (beige)
pH
12.45 1.0% in watering solution to 20 deg C
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Safety Data Sheet Calcium Hydroxide Revision 3, Date 01 Feb 2015
Vapour Pressure
No Data Available
Relative Vapour Density
No Data Available
Boiling Point
2850 °C
Melting Point
>450 °C
Freezing Point
No Data Available
Solubility
1844.9 mg/L 20°C
Specific Gravity
2.24
Flash Point
No Data Available
Auto Ignition Temp
No Data Available
Evaporation Rate
No Data Available
Bulk Density
No Data Available
Corrosion Rate
No Data Available
Decomposition Temperature
No Data Available
Density
No Data Available
Specific Heat
No Data Available
Molecular Weight
74.10 g/mol
Net Propellant Weight
No Data Available
Octanol Water Coefficient
No Data Available
Particle Size
No Data Available
Partition Coefficient
No Data Available
Saturated Vapour Concentration No Data Available
Vapour Temperature
No Data Available
Viscosity
No Data Available
Volatile Percent
No Data Available
VOC Volume
No Data Available
Additional Characteristics
100% solubility in NH2Cl4
Potential for Dust Explosion
No Data Available
Fast or Intensely Burning
Characteristics
No Data Available
Flame Propagation or Burning
Rate of Solid Materials
No Data Available
Non-Flammables That Could
No Data Available
Contribute Unusual Hazards to a
Fire
Properties That May Initiate or
Contribute to Fire Intensity
No Data Available
Reactions That Release Gases
or Vapours
No Data Available
Release of Invisible Flammable
Vapours and Gases
No Data Available
10. STABILITY AND REACTIVITY
General Information
No oxidising properties (Based on the chemical structure, the substance
does not contain a surplus of oxygen or any structural groups known to be
correlated with a tendency to react exothermally with combustible
material)
Chemical Stability
Under normal conditions of use and storage, calcium dihydroxide is stable.
Reactivity : In aqueous media Ca(OH)2 dissociates resulting in the formation of calcium cations and hydroxyl anions
(when below the limit of water solubility).
Conditions to Avoid
Minimise exposure to air and moisture to avoid degradation.
Materials to Avoid
Calcium dihydroxide reacts exothermically with acids. When heated above 580 °C, calcium dihydroxide
decomposes to produce calcium oxide (CaO) and water (H2O): Ca(OH)2 CaO + H2O. Calcium oxide
Form 21047, Revision 3, Page 5 of 10, 16-Jun-2017 02:08:16
Safety Data Sheet Calcium Hydroxide Revision 3, Date 01 Feb 2015
reacts with water and generates heat. This may cause risk to flammable material.
Calcium dihydroxide reacts exothermically with acids to form salts. Calcium dihydroxide reacts with
aluminium and brass in the presence of moisture leading to the production of hydrogen.
Ca(OH)2 + 2 Al + 6 H2O Ca[Al(OH)4]2 + 3 H2
Hazardous Decomposition
Products
When heated above 580 °C, calcium dihydroxide decomposes to produce calcium oxide (CaO) and water (H2O)
Hazardous Polymerisation
Hazardous Polymerization Will not occur.
11. TOXICOLOGICAL INFORMATION
General Information
Oral: LD50 > 2000 mg/kg bw (OECD 425, rat)
Dermal: LD50 > 2500 mg/kg bw (OECD 402, rabbit)
Bacterial reverse mutation assay (Ames test, OECD 471): Negative
Mammalian chromosome aberration test: Negative
Calcium (administered as Ca-lactate) is not carcinogenic
(experimental result, rat).
Calcium dihydroxide is not acutely toxic. Classification for acute toxicity is not warranted.
EyeIrritant
Corrosive. May produce severe irritation and pain. May induce ulcerations of the corneal epithelium. Can cause
blindness.
Calcium dihydroxide entails a risk of serious damage to the eye (eye irritation studies (in vivo, rabbit).
Ingestion
Gastric irritant. Ingestion may be followed by severe pain, vomiting, diarrhoea, and collapse. If death does not occur
in 24 hours, oesophageal perforation may occur, as evidenced by fall in blood pressure and severe pain. A narrowing
of the oesophagus may occur weeks, months, or years after ingestion, making swallowing difficult.
Inhalation
Causes irritation to the respiratory tract. Symptoms may include coughing, shortness of breath. Can cause chemical
bronchitis.
SkinIrritant
Corrosive. May cause severe burns and blistering, depending on duration of contact. Prolonged or repeated skin
contact may produce severe irritation or dermatitis.
Calcium dihydroxide is irritating to skin (in vivo, rabbit).
Carcinogen Category
No Data Available
12. ECOLOGICAL INFORMATION
Ecotoxicity
LC50 (96h) for freshwater fish: 50.6 mg/l
LC50 (96h) for marine water fish: 457 mg/l
EC50 (48h) for freshwater invertebrates: 49.1 mg/l
LC50 (96h) for marine water invertebrates: 158 mg/l
EC50 (72h) for freshwater algae: 184.57 mg/l
NOEC (72h) for freshwater algae: 48 mg/l
NOEC (14d) for marine water invertebrates: 32 mg/l
Persistence/Degradability
Not relevant for inorganic substances.
Mobility
Calcium dihydroxide, which is sparingly soluble, presents a low mobility in most soils
Environmental Fate
EC10/LC10 or NOEC for soil macroorganisms: 2000 mg/kg soil dw
EC10/LC10 or NOEC for soil microorganisms: 12000 mg/kg soil dw
NOEC (21d) for terrestrial plants: 1080 mg/kg
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 of dilution and carbonation.
Bioaccumulation Potential
Not relevant for inorganic substances.
Environmental Impact
No Data Available
13. DISPOSAL CONSIDERATIONS
General Information
Dispose of in accordance with all local, state and federal regulations. All empty packaging should be disposed of in
accordance with Local, State, and Federal Regulations or recycled/reconditioned at an approved facility.
Special Precautions for Land Fill Contact a specialist disposal company or the local waste regulator for advice.
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Safety Data Sheet Calcium Hydroxide Revision 3, Date 01 Feb 2015
Whatever cannot be saved for recovery or recycling should be managed in an appropriate and approved waste
facility. Although not a listed RCRA hazardous waste, this material may exhibit one or more characteristics of a
hazardous waste and require appropriate analysis to determine specific disposal requirements. Processing, use or
contamination of this product may change the waste management options. State and local disposal regulations may
differ from federal disposal regulations. Dispose of container and unused contents in accordance with federal, state
and local requirements.
14. TRANSPORT INFORMATION
Land Transport (Australia)
ADG
Proper Shipping Name
CALCIUM HYDROXIDE
Class
No Data Available
Subsidiary Risk(s)
No Data Available
No Data Available
UN Number
No Data Available
Hazchem
No Data Available
Pack Group
No Data Available
Special Provision
No Data Available
Land Transport (New Zealand)
NZS5433
Proper Shipping Name
CALCIUM HYDROXIDE
Class
No Data Available
Subsidiary Risk(s)
No Data Available
No Data Available
UN Number
No Data Available
Hazchem
No Data Available
Pack Group
No Data Available
Special Provision
No Data Available
Land Transport (United States of America)
US DOT
Proper Shipping Name
CALCIUM HYDROXIDE
Class
No Data Available
Subsidiary Risk(s)
No Data Available
No Data Available
UN Number
No Data Available
Hazchem
No Data Available
Pack Group
No Data Available
Special Provision
No Data Available
Sea Transport
IMDG
Proper Shipping Name
CALCIUM HYDROXIDE
Class
No Data Available
Subsidiary Risk(s)
No Data Available
UN Number
No Data Available
Form 21047, Revision 3, Page 7 of 10, 16-Jun-2017 02:08:16
Safety Data Sheet Calcium Hydroxide Revision 3, Date 01 Feb 2015
Hazchem
No Data Available
Pack Group
No Data Available
Special Provision
No Data Available
EMS
No Data Available
Marine Pollutant
No
Air Transport
IATA
Proper Shipping Name
CALCIUM HYDROXIDE
Class
No Data Available
Subsidiary Risk(s)
No Data Available
UN Number
No Data Available
Hazchem
No Data Available
Pack Group
No Data Available
Special Provision
No Data Available
National Transport Commission (Australia)
Australian Code for the Transport of Dangerous Goods by Road & Rail (ADG Code)
Dangerous Goods Classification
NOT Dangerous Goods according to the criteria of the Australian Code for the Transport of Dangerous
Goods by Road & Rail (ADG Code)
15. REGULATORY INFORMATION
General Information
No Data Available
Poisons Schedule (Aust)
No Data Available
Environmental Protection Authority (New Zealand)
Hazardous Substances and New Organisms Amendment Act 2015
Approval Code
HSR002925
National/Regional Inventories
Australia (AICS)
Listed
Canada (DSL)
Not Determined
Canada (NDSL)
Not Determined
China (IECSC)
Not Determined
Europe (EINECS)
215-137-3
Europe (REACh)
Registered
Japan (ENCS/METI)
Not Determined
Korea (KECI)
Not Determined
Malaysia (EHS Register)
Not Determined
Form 21047, Revision 3, Page 8 of 10, 16-Jun-2017 02:08:16
Safety Data Sheet Calcium Hydroxide Revision 3, Date 01 Feb 2015
New Zealand (NZIoC)
Listed
Philippines (PICCS)
Not Determined
Switzerland (Giftliste 1)
Not Determined
Switzerland (Inventory of Notified
Substances)
Not Determined
Taiwan (NCSR)
Not Determined
USA (TSCA)
Not Determined
16. OTHER INFORMATION
Related Product Codes
CAHYDR1000, CAHYDR1001, CAHYDR1002, CAHYDR2000, CAHYDR2200, CAHYDR3000, CAHYDR3001,
CAHYDR4000, CAHYDR5000, CAHYDR6000, CAHYDR6100, CAHYDR7000, CAHYDR7100, CAHYDR7500,
CAHYDR8000, CAHYDR8100, CAHYDR4500, CAHYDR8200, CAHYDR8101, CAHYDR8102, CAHYDR8103,
CAHYDR7501, CAHYDR8104, CAHYDR7520, CAHYDR8113, CAHYDR8175, CAHYDR8105
Revision
3
Revision Date
01 Feb 2015
Key/Legend
< Less Than
> Greater Than
AICS Australian Inventory of Chemical Substances
atm Atmosphere
CAS Chemical Abstracts Service (Registry Number)
cm² Square Centimetres
CO2 Carbon Dioxide
COD Chemical Oxygen Demand
deg C (°C) Degrees Celcius
EPA (New Zealand) Environmental Protection Authority of New Zealand
deg F (°F) Degrees Farenheit
g Grams
g/cm³ Grams per Cubic Centimetre
g/l Grams per Litre
HSNO Hazardous Substance and New Organism
IDLH Immediately Dangerous to Life and Health
immiscible Liquids are insoluable in each other.
inHg Inch of Mercury
inH2O Inch of Water
K Kelvin
kg Kilogram
kg/m³ Kilograms per Cubic Metre
lb Pound
LC50 LC stands for lethal concentration. LC50 is the concentration of a material in air which causes the death of
50% (one half) of a group of test animals. The material is inhaled over a set period of time, usually 1 or 4 hours.
LD50 LD stands for Lethal Dose. LD50 is the amount of a material, given all at once, which causes the death of 50%
(one half) of a group of test animals.
ltr or L Litre
m³ Cubic Metre
mbar Millibar
mg Milligram
mg/24H Milligrams per 24 Hours
mg/kg Milligrams per Kilogram
mg/m³ Milligrams per Cubic Metre
Misc or Miscible Liquids form one homogeneous liquid phase regardless of the amount of either component
present.
mm Millimetre
mmH2O Millimetres of Water
mPa.s Millipascals per Second
N/A Not Applicable
NIOSH National Institute for Occupational Safety and Health
NOHSC National Occupational Heath and Safety Commission
OECD Organisation for Economic Co-operation and Development
Oz Ounce
PEL Permissible Exposure Limit
Pa Pascal
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Safety Data Sheet Calcium Hydroxide Revision 3, Date 01 Feb 2015
ppb Parts per Billion
ppm Parts per Million
ppm/2h Parts per Million per 2 Hours
ppm/6h Parts per Million per 6 Hours
psi Pounds per Square Inch
R Rankine
RCP Reciprocal Calculation Procedure
STEL Short Term Exposure Limit
TLV Threshold Limit Value
tne Tonne
TWA Time Weighted Average
ug/24H Micrograms per 24 Hours
UN United Nations
wt Weight
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