Calcium Hydroxide – Product identifier
1 Identification
Classification of the substance or mixture
H319 Causes serious eye irritation.
Label elements
GHS label elements The substance is classified and labeled according to the Globally Harmonized System (GHS).
Hazard pictograms
Signal word Danger
Hazard statements
Causes serious eye irritation.
Precautionary statements
Do not breathe dusts or mists.
Wash thoroughly after handling.
Wear protective gloves/protective clothing/eye protection/face protection.
If swallowed: Rinse mouth. Do NOT induce vomiting.
If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.
IF INHALED: Remove person to fresh air and keep comfortable for breathing.
If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
Continue rinsing.
Immediately call a poison center/doctor.

2 Calcium Hydroxide – Hazard(s) identification
Specific treatment (see on this label).
Wash contaminated clothing before reuse.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.
Classification system:
NFPA ratings (scale 0 – 4)
Other hazards
Results of PBT and vPvB assessment
PBT: Not applicable.
vPvB: Not applicable.
Chemical characterization: Substances
CAS: 1305-62-0 Calcium Hydroxide 100%

3 Calcium Hydroxide – Composition/information on ingredients
Description of first aid measures
General information: Immediately remove any clothing soiled by the product.
After inhalation: In case of unconsciousness place patient stably in side position for transportation.
After skin contact: Immediately wash with water and soap and rinse thoroughly.
After eye contact: Rinse opened eye for several minutes under running water. Then consult a doctor.
After swallowing: Drink copious amounts of water and provide fresh air. Immediately call a doctor.
Information for doctor:
Most important symptoms and effects, both acute and delayed No further relevant information available.
Indication of any immediate medical attention and special treatment needed
No further relevant information available.

4 Calcium Hydroxide – First-aid measures
Extinguishing media
Suitable extinguishing agents: Use fire fighting measures that suit the environment.
Special hazards arising from the substance or mixture No further relevant information available.
Advice for firefighters
Protective equipment: No special measures required.
5 Fire-fighting measures

8 Calcium Hydroxide – Exposure controls/personal protection
· Additional information about design of technical systems: No further data; see section 7.
· Control parameters
· Components with limit values that require monitoring at the workplace:
CAS: 1305-78-8 Calcium Oxide
PEL
REL
TLV
Long-term value: 5 mg/m³
Long-term value: 2 mg/m³
Long-term value: 2 mg/m³
· Additional information: The lists that were valid during the creation were used as basis.
· Exposure controls
· Personal protective equipment:
· General protective and hygienic measures:
Keep away from foodstuffs, beverages and feed.
Immediately remove all soiled and contaminated clothing.
Wash hands before breaks and at the end of work.
Avoid contact with the eyes.
Avoid contact with the eyes and skin.
· Breathing equipment: Not required.
Personal precautions, protective equipment and emergency procedures
Wear protective equipment. Keep unprotected persons away.
Environmental precautions: Do not allow to enter sewers/ surface or ground water.
Methods and material for containment and cleaning up:
Use neutralizing agent.
Dispose contaminated material as waste according to section 13.
Ensure adequate ventilation.
Reference to other sections
See Section 7 for information on safe handling.
See Section 8 for information on personal protection equipment.
See Section 13 for disposal information.
Protective Action Criteria for Chemicals
PAC-1: 6 mg/m³
PAC-2: 110 mg/m³
PAC-3: 660 mg/m³
6 Accidental release measures
Handling:
Precautions for safe handling Thorough dedusting.
Information about protection against explosions and fires: No special measures required.
Conditions for safe storage, including any incompatibilities
Storage:
Requirements to be met by storerooms and receptacles: No special requirements.
Information about storage in one common storage facility: Not required.
Further information about storage conditions: Keep receptacle tightly sealed.
Specific end use(s) No further relevant information available.

7 Calcium Hydroxide – Handling and storage

9 Physical and chemical properties
· Information on basic physical and chemical properties
· General Information
· Appearance:
Form: Crystalline Powder or Granules
Color: White
· Odor: Odorless
· Odor threshold: Not determined.
· pH-value: Not applicable.
· Change in condition
Melting point/Melting range:
Boiling point/Boiling range:
2,614 °C
Not applicable.
· Flash point: Not applicable.
· Flammability (solid, gaseous): Product is not flammable.
· Decomposition temperature: Not determined.
· Ignition temperature: Not determined.
· Danger of explosion: Product does not present an explosion hazard.
· Explosion limits:
Lower:
Upper:
Not determined.
Not determined.
· Vapor pressure at 20 °C (68 °F): 0 hPa
· Density at 20 °C (68 °F):
· Relative density
3.37 g/cm³ (28.12265 lbs/gal)
Not determined.
· Protection of hands:
The glove material has to be impermeable and resistant to the product/ the substance/ the preparation.
Due to missing tests no recommendation to the glove material can be given for the product/ the preparation/ the chemical mixture.
Selection of the glove material on consideration of the penetration times, rates of diffusion and the degradation
· Material of gloves
The selection of the suitable gloves does not only depend on the material, but also on further marks of quality and varies from manufacturer to manufacturer.
· Penetration time of glove material
The exact break through time has to be found out by the manufacturer of the protective gloves and has to be
observed.
· Eye protection:
· Body protection: Protective work clothing
Toxicity
Aquatic toxicity: No further relevant information available.
Persistence and degradability No further relevant information available.
Behavior in environmental systems:
Bioaccumulative potential No further relevant information available.
Mobility in soil No further relevant information available.

12 Ecological information
· Vapor density
· Evaporation rate
Not applicable.
Not applicable.
· Solubility in / Miscibility with
Water:
Insoluble.
· Partition coefficient (n-octanol/water): Not determined.
· Viscosity:
Dynamic:
Kinematic:
Not applicable.
Not applicable.
· Other information No further relevant information available.
Reactivity No further relevant information available.
Chemical stability
Thermal decomposition / conditions to be avoided: No decomposition if used according to specifications.
Possibility of hazardous reactions No dangerous reactions known.
Conditions to avoid No further relevant information available.
Incompatible materials: No further relevant information available.
Hazardous decomposition products: No dangerous decomposition products known.

10 Stability and reactivity
Information on toxicological effects
Acute toxicity:
Primary irritant effect:
on the skin: Caustic effect on skin and mucous membranes.
on the eye:
Strong caustic effect.
Strong irritant with the danger of severe eye injury.
Sensitization: No sensitizing effects known.
Additional toxicological information:
Swallowing will lead to a strong caustic effect on mouth and throat and to the danger of perforation of esophagus and stomach.
Carcinogenic categories
IARC (International Agency for Research on Cancer) Substance is not listed.
NTP (National Toxicology Program) Substance is not listed.
OSHA-Ca (Occupational Safety & Health Administration) Substance is not listed.

11 Toxicological information

14 Transport information
*
· UN-Number
· DOT, IMDG, IATA
UN1910
· UN proper shipping name
· DOT, IMDG, IATA
Calcium oxide
· Transport hazard class(es)
· DOT
· Class
· Label
8 Corrosive substances
8
· IMDG, IATA
· Class 8 Corrosive substances
· Label 8
· Packing group
· DOT, IMDG, IATA
III
· Environmental hazards:
· Marine pollutant:
No
· Special precautions for user Warning: Corrosive substances
· Additional ecological information:
· General notes:
Water hazard class 1 (Assessment by list): slightly hazardous for water
Do not allow undiluted product or large quantities of it to reach ground water, water course or sewage system.
Must not reach bodies of water or drainage ditch undiluted or unneutralized.
· Results of PBT and vPvB assessment
· PBT: Not applicable.
· vPvB: Not applicable.
· Other adverse effects No further relevant information available.
Waste treatment methods
Recommendation:
Must not be disposed of together with household garbage. Do not allow product to reach sewage system.
Uncleaned packagings:
Recommendation: Disposal must be made according to official regulations.

13 Disposal considerations
· Transport in bulk according to Annex II of MARPOL73/78 and the IBC Code
Not applicable.
·
Transport/Additional information:
·
DOT
·
Quantity limitations
On passenger aircraft/rail: 25 kg On cargo aircraft only: 100 kg
· UN “Model Regulation”:
UN 1910 CALCIUM OXIDE, 8, III
*
· Safety, health and environmental regulations/legislation specific for the substance or mixture
No further relevant information available.
· Sara
·
Section 355 (extremely hazardous substances): Substance is not listed.
·
Section 313 (Specific toxic chemical listings): Substance is not listed.
· TSCA (Toxic Substances Control Act): ACTIVE
·
Hazardous Air Pollutants Substance is not listed.
· Proposition 65
·
Chemicals known to cause cancer: Substance is not listed.
·
Chemicals known to cause reproductive toxicity for females: Substance is not listed.
·
Chemicals known to cause reproductive toxicity for males: Substance is not listed.
·
Chemicals known to cause developmental toxicity: Substance is not listed.
· Carcinogenic categories
·
EPA (Environmental Protection Agency) Substance is not listed.
·
TLV (Threshold Limit Value) Substance is not listed.
·
NIOSH-Ca (National Institute for Occupational Safety and Health) Substance is not listed.
·
GHS label elements The substance is classified and labeled according to the Globally Harmonized System (GHS).
· Hazard pictograms
·
Signal word Danger
· Hazard statements
· Causes serious eye irritation.
· Precautionary statements
Do not breathe dusts or mists. Wash thoroughly after handling.
Wear protective gloves/protective clothing/eye protection/face protection. If swallowed: Rinse mouth. Do NOT induce vomiting.
If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove person to fresh air and keep comfortable for breathing.
If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Immediately call a poison center/doctor. Specific treatment (see on this label).
Wash contaminated clothing before reuse. Store locked up.

15 Regulatory information
This information is based on our present knowledge. However, this shall not constitute a guarantee for any
specific product features and shall not establish a legally valid contractual relationship.
Department issuing SDS: Environment protection department.
Date of preparation / last revision
Creation date for SDS: 15/05/2023
Revision 1.0 05/03/2025, reviewed SDS for accuracy. S.T.N.

16 Other information
*
Dispose of contents/container in accordance with local/regional/national/international regulations.
· Chemical safety assessment: A Chemical Safety Assessment has not been carried out.