Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 910-704-8 | CAS number: -
Guidance on Safe Use
Administrative data
First-aid measures
Inhalation: Remove from exposure. Irrigate nose and throat with water for at least 20 minutes. It is advisable
to seek medical attention. Irritating to the respiratory tract, may cause inflammation. Prolonged repeated
inhalation of high dust concentrations may cause ulceration and perforation of the nasal septum and
pneumonitis.
Skin Contact: Remove from exposure. Wash affected area immediately with plenty of water for at least 15 to
20 minutes. Remove contaminated clothing. Seek medical attention if exposed area is large or if irritation
persists. Prolonged or repeated contact with skin may result in more severe irritation or dermatitis. May cause
burns in the presence of moisture (alkaline burns).
Eye Contact: SPEED IS ESSENTIAL. Remove from exposure. Irrigate immediately with plenty of water for at least 15-20 minutes. Seek medical attention as soon as possible. May cause serious damage to
eyes if left untreated.
Ingestion: Remove from exposure. Wash mouth with water and drink plenty of water. Do not induce
vomiting. Seek medical advice if in doubt. May irritate gastrointestinal tract.
General: No known delayed effects. Ensure that eyewash/shower facilities are available.
Fire-fighting measures
Non flammable, inhibits the spread of flame.
Extinguishing Media: Use Powder type extinguisher. DO NOT USE WATER BASED EXTINGUISHANTS.
Special Exposure Hazards: When heated above 580°C, calcium hydroxide decomposes to form calcium oxide (CaO) and water (H2O). Calcium oxide reacts with water and generates heat. Risk of igniting
flammable materials.
Accidental release measures
Personal Precautions: Avoid contact with skin and eyes. Use barrier cream where necessary. Avoid inhalation
of dust, where practicable ensure sufficient ventilation and respiratory protection is provided.
Environmental Precautions: Cover or enclose area, if possible, to avoid unnecessary dust hazard. Avoid
contamination of drains and watercourses. Any large spillages into water courses must be alerted to the
Environment Agency or other regulatory bodies.
Cleaning Methods: Contain spillage and keep dry if possible. Use vacuum suction unit, or shovel
into bags (using appropriate protective clothing
Handling and storage
Handling: Handling systems should preferably be enclosed or suitable ventilation installed to maintain
atmospheric dust below WEL (Workplace Exposure Limit (WEL).
Storage: Store in a cool dry environment free from draughts. Bulk storage should be in a purpose-built silo.
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.
Transport information
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Marine transport (UN RTDG/IMDG)
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Exposure controls / personal protection
Occupational Exposure Controls: Handling systems should preferably be enclosed or suitable ventilation
installed to maintain athospheric dust below Exposure Limit Value.
Individual Protection Measures: Respiratory Protection: Wear suitable respiratory equipment (dust/respiratory mask or air stream helmet)
that will afford adequate protection.
Hand Protection: Wear suitable gloves that will afford adequate protection.
Eye Protection: Wear suitable eye protection (safety glasses/safety goggles/face shield) that will afford
adequate protection.
Skin Protection: Wear suitable overalls and safety footwear that will afford adequate protection.
Environmental Exposure Controls: All ventilation/dust extraction systems should be filtered before discharge
to atmosphere.
Stability and reactivity
Conditions to Avoid: Avoid exposure to air or moisture. When heated above 580oC calcium hydroxide
decomposes to produce calcium oxide (quicklime) and water.
Materials to Avoid: Reacts with carbon dioxide to form calcium carbonate. Calcium hydroxide reacts with
acids to form calcium salts. Calcium hydroxide reacts with reacts with aluminium and brass in the presence of
moisture.
Hazardous Decomposition Products: Calcium hydroxide absorbs carbon dioxide from air to form calcium carbonate, which is a common material in nature.
Disposal considerations
Disposal should be in accordance with local and national legislation.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
