FIRST-AID MEASURES Routes of Exposure First Aid Instructions Cesium hydroxide, solution is not capable of causing a pool fire. supplier m-i drilling fluids uk ltd, pocra quay, footdee, aberdeen. Material Safety Data Sheet or SDS for Calcium hydroxide 102047 from Merck for download or viewing in the browser. Then store and dispose of according to local regulations. If not breathing, give artificial respiration. synthetic (CAS 471-34-1) 10 mg/m3 Total Calcium hydroxide (CAS TWA 5 mg/m3 1305-62-0) Biological limit values No biological exposure limits noted for the ingredient(s). 8.2.2 Environmental exposure controls Avoid release into environment; calcium hydroxide may cause pH variation. Pain. Summary of Risk Evaluation Framework for Determining Quantity Thresholds and Concentrations for Substances under the Environmental Emergency Regulations, Implementation Guidelines for the Environmental Emergency Regulations 2011, Environment Canada. COLOURLESS CRYSTALS OR WHITE POWDER. Registered on December 8, 2011. Solution . EUH070 Toxic by eye contact. Environmental Health: substances that are: corrosive, persistent, bioaccumulative, or aquatically toxic. Indicates no available weight-of-the-evidence summary assessment. In no event shall Supplier be responsible for damages of any nature whatsoever resulting Limewater is a saturated solution of calcium hydroxide, less than 0.02 M. IRRITANT. CDC - NIOSH Pocket Guide to Chemical Hazards - Calcium hydroxide Calcium hydroxide is the exothermic product of calcium oxide and water, according to Darrell D. Ebbing and Steven D. Gammon's "General Chemistry." pp. The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. ab11 5dq t -44 (0)1224-584336 f -44 (0)1224-576119 Government of Canada. List of Regulated Toxic and Flammable Substances and Thresholds for Accidental Release Prevention. safety data sheet lime (calcium hydroxide) 1 identification of the substance/preparation and company/undertaking product name lime (calcium hydroxide) synonyms, trade namescalcium hydroxide application ph modifier. Effects of short-term exposure Calcium hydroxide. calcium dihydroxide, calcium dihyrdroxide, calcium hydrate, calcium hydroxide, calcium hydroxide (ca(oh)2), hydrated lime, and lime water Cancer Cancer: Ingredients linked to cancer in government, industry or academic studies or assessments. Physical State; Appearance CDC - NIOSH Pocket Guide to Chemical Hazards - Calcium hydroxide Because calcium hydroxide, solution does not have a vapour pressure greater than 10 mmHg (1.33 kPa) at 25°C (CHEMINFO, 2010), the substance does not have sufficient volatility to constitute an inhalation danger. The substance is irritating to the respiratory tract. One publication by the United States Environmental Protection … However, limewater is usually made in schools by adding excess solid calcium hydroxide (or oxide) to water. EPA/630/P-03/001F. U.S. EPA (U.S. Environmental Protection Agency). Guidelines for Carcinogen Risk Assessment. NIOSH: Pocket Guide to Chemical Hazards Components Type Value Form Calcium carbonate, TWA 5 mg/m3 Respirable. International Agency for Research on Cancer, World Health Organization. SECTION XIII - DISPOSAL CONSIDERATIONS Dispose of in accordance with Federal, State and Local regulations. COMPOSITION AND INFORMATION ON INGREDIENTS Hazardous Components C.A.S. Hazard classification & labelling Hazard classification and labelling. No: N/A 1.PRODUCT IDENTIFICATION. Calcium Hydroxide SDS GHS, MSDS Sheet, Material Safety Data Sheet. Calcium hydroxide SDS Safety Data Sheet for Calcium hydroxide 102047. This methodology was not used because pH ≤ 2 or pH ≥ 11.5 are considered corrosive to aquatic life. Because calcium hydroxide, solution does not have an identified flash point (no flash point data were available during the data gathering process) and decomposes before reaching its boiling point (Genium, 2007), this substance does not have the possibility of a vapour cloud explosion. © ILO and WHO 2017. Contains Calcium Hydroxide 3. Ketcheson K, Shrives J. form salts with inorganic bases such as CALCIUM HYDROXIDE. 843-861. 3 Effective date : 12.14.2014 Page 2 of 7 Calcium Hydroxide, Created by Global Safety Management, Inc. -Tel: 1-813-435-5161 - www.gsmsds.com 4. Flash Point:N/A Flammable Limits:N/A Fire Extinguishing Media:Considered non-combustible. Skin burns. At least some ingredient disclosure. Calcium hydroxide has been used by dentists in the clinical practice for over a century [1]. : 1305-62-0 1.2 Relevant identified uses of the substance or mixture and uses advised against Identified uses : Laboratorychemicals, Industrial & for professional use only. OELs. H318 Causes serious eye damage. Calcium hydroxide contains alkaline material potentially toxic to aquatic life at high concentrations. OECD (Organisation for Economic Co-operation and Development). Implementation Guidelines for the Environmental Emergency Regulations 2011. Record Number 10. Decomposes at 580°CRelative density (water = 1): 2.2 Solubility in water: none. One spill of sulfuric acid was identified as having a “major” impact at 4.5 tonnes. Consult a physician. Occupational Exposure Total dust. Calcium dihydroxide is composed of one calcium cation and two hydroxide anions. You will not receive a reply. 77, No. In case of fire in the surroundings, use appropriate extinguishing media. Calcium hydroxide. The proposed threshold at 3 tonnes has been extended for bases as well. Human Health: substances that are toxic by inhalation, are carcinogenic, or are corrosive. Page 1 of 7. This product has been replaced by 239232|Sigma-Aldrich - Calcium hydroxide, ACS reagent, ≥95.0% | Ca(OH)2 For additional information on toxicity from scientific journals or registration documents, see the "Additional Resources for Toxicity " section of the chemical detail page. Safety Data Sheet according to 29CFR1910/1200 and GHS Rev. Vomiting. Calcium hydroxide SDS Safety Data Sheet for Calcium hydroxide 102047. The nitroparaffins, nitromethane, nitropropane, etc. Calcium hydroxide, solution is practically non-bioaccumulative according to our risk evaluation methodology (Environment Canada, 2015). Mike Wye & Associates, Health & Safety September 2017 Page 2 of 13 Material Data Safety Sheet: Calcium Dihydroxide Version: September 2017 2 HAZARDS IDENTIFICATION 2.1 Classification of the substance 2.1.1 Classification according to Regulation (EC) 1272/2008 STOT Single Exp.3, Route of exposure: Inhalation Skin Irritation 2 Eye damage 1 Routes of exposure 2011. Because calcium hydroxide, solution does not have a vapour pressure greater than 10 mmHg (1.33 kPa) at 25°C (CHEMINFO, 2010), the substance does not have sufficient volatility to constitute an inhalation danger. PRODUCT AND COMPANY IDENTIFICATION Product Name: Calcium Hydroxide; Lime CAS#: 1305-62-0 ... environment, and for health and safety purposes. 2005. IARC (International Agency for Research on Cancer). Calcium hydrate, Caustic lime, Hydrated lime, Slaked lime White, odorless powder. Comparison of Threshold Quantities for Substances with Final AEGL-2 and IDLH Values under CEPA’s Environmental Emergency Regulations. IARC Monographs Database on Cancer Risks to Humans. To minimize environmental impacts, many researchers and government agencies emphasize the importance of using smaller quantities of deicers to increase the efficiency of mechanical ice removal instead of melting ice completely in place and producing high volumes of deicer-saturated run off. COMPOSITION AND INFORMATION ON INGREDIENTS Hazardous Components C.A.S. 2006. Get medical attention in case of uncertainty. In: Proceedings of the Thirty-third Arctic and Marine Oilspill Program Technical Seminar on Environmental Contamination and Response. Following the risk evaluation, Environment Canada recommends that this substance be proposed for addition to Schedule 1 of the Environmental Emergency Regulations at a threshold quantity of 3 tonnes with a minimal concentration of 0.1% and at a pH ≥ 11.5. Therefore, no threshold is set for this substance as a result of its potential for flammability or combustibility. Abdominal cramps. Synonyms: Calcium hydrate; Calcium Hydroxide or Slaked Lime CAS No. CHEMINFO. 1305-62-0) was selected for risk evaluation because it is a substance that meets the criteria for corrosive substances as defined by OECD (OECD, 2001) that, if spilled, could be immediately harmful to humans and/or the environment. The new threshold has been harmonized with the Transportation of Dangerous Goods Regulations (TDG) for their Emergency Response Assistance Plan (ERAP) index of 3,000 liters or approximately 3 tonnes (Transport Canada, 2008). In case of fire in the surroundings, use appropriate extinguishing media. Transport hazard class(es) Hazard classification : 8 14.4. Packing group Packing group : III 14.5. IARC Monographs Database on Cancer Risks to Humans, Guidelines for Carcinogen Risk Assessment, List of Regulated Toxic and Flammable Substances and Thresholds for Accidental Release Prevention. safety data sheet lime (calcium hydroxide) 1 identification of the substance/preparation and company/undertaking product name lime (calcium hydroxide) synonyms, trade namescalcium hydroxide application ph modifier. Calcium hydroxide solutions can cause chemical burns. Unusual Fire and Explosion Hazards:Not combustible. Calcium hydroxide (CAS TWA 5 mg/m3 1305-62-0) US. Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Following the risk evaluation of calcium hydroxide, solution and taking into consideration the quantities in use in Canada, Environment Canada recommends that this substance be proposed for addition to Schedule 1 of the Environmental Emergency Regulations under CEPA 1999 at a threshold quantity of 3 tonnes with a minimum concentration of 0.1% and at a pH ≥ 11.5. requires further investigation). Limits, Table Z1A (06 2008) CALCIUM HYDROXIDE - TWA 5 mg/m3 US. Excessive dust generation creates a potential explosion hazard. Inhalation risk Tennessee. Calcium Hydroxide Safety Data Sheet according to Federal Register / Vol. ab11 5dq t -44 (0)1224-584336 f -44 (0)1224-576119 Hazard statement(s ) H315 Causes skin irritation. * Contact can severely irritate and burn the skin and eyes with possible eye damage. Because calcium hydroxide, solution is not classified in any group of International Agency for Research on Cancer (IARC, 2014) or the U.S. Environmental Protection Agency (U.S. EPA, 2005), and because the substance does not have an identified half-life (no half-life data were available during the data gathering process), no threshold is set for the carcinogenicity of this substance. NIOSH: Pocket Guide to Chemical Hazards Components Type Value Form Calcium carbonate, TWA 5 mg/m3 Respirable. Calcium hydroxide, solution is classified as beingpractically non-persistent in water according to our risk evaluation methodology (Environment Canada, 2015). Refer for medical attention. Physical: flammable and combustible or oxidizing substances, or those having a potential to cause vapour cloud explosions or pool fires. Indicates high toxicity in the given toxicological category. For more information regarding the determination of thresholds, please refer to the Implementation Guidelines for the Environmental Emergency Regulations 2011 (Environment Canada, 2011). Washington (DC). : 1305-62-0 EINECS EC Number: 215-137-3. Effects of long-term or repeated exposure Even a saturated solution of calcium hydroxide is so dilute that it is not classed as IRRITANT, despite pH = 12.4. Calcium hydrate, Caustic lime, Hydrated lime, Slaked lime White, odorless powder. Environmental hazards Dangerous for the environment : No Marine pollutant : No Other information : No supplementary information available 14.6. H318 Causes serious eye damage. Remove contaminated clothes. Dry skin. They neutralize acids exothermically to … Repeated or prolonged contact with skin may cause dermatitis. Redness. Environment Canada: Ottawa (ON). Signal word Danger. MATERIAL SAFETY DATA SHEET. It has a strong base pH and is used for many purposes, often under its more common name, slaked lime. This chemical is very corrosive, and it … Safety Data Sheet according to 29CFR1910/1200 and GHS Rev. 2010. Risk Assessment Forum. Calcium hydroxide-based preparations present minimal hazard in the quantities provided. FDA Calcium hydroxide is generally recognized as safe (GRAS) by FDA 21 CFR 184.1205. Blisters. Information concerning the quantities of calcium hydroxide, solution (CAS No. This produces flammable/explosive gas (hydrogen - see ICSC 0001). Molecular mass: 74.1 For enquiries, contact us. with the financial assistance of the European Commission. The new proposed threshold is set to 3 tonnes for the following reasons: A “moderate” classification in NEMISIS has some of the following characteristics: there is a risk to endangered or threatened species or their habitat, or a significant life threatening risk to other wildlife; the incident causes significant disruption of public services or property damage and community health is or will be threatened; impacts of the incident on the environment are significant (e.g. Prepared by an international group of experts on behalf of ILO and WHO, For example, the threshold will be compared to other provincial and federal legislation or voluntary programs that may already provide adequate management of the risk from an environmental emergency. Environmental exposure controls : Avoid release to the environment. The substance has a measured pH equal to or greater than 11.5, therefore a threshold of 3 tonnes applies. Canadian Centre for Occupational Health and Safety (CCOHS). Bases are chemically similar to sodium hydroxide (NaOH) or sodium oxide (Na2O). The nitroparaffins, nitromethane, nitropropane, etc. Environment Canada. Some potential for hazards to health or the environment. Contains Calcium Hydroxide 3. Document Number 94-1556. Reacts violently with acids. Environmental Directorate, Joint Meeting of the Chemicals Committee and the Working Party on Chemicals, Pesticides and Biotechnology, ENV/JM/MONO(2001)6. The substance is corrosive to the eyes and skin. Calcium hydroxide, solution (CAS No. Rinse skin with plenty of water or shower. Registered on December 8, 2011, 2014. Eng. Sweep spilled substance into covered containers. 9.0 Physical and Chemical Properties 9.1 Characteristics 9.1.1 Appearance / Color / Physical state Fine, white powder 9.1.2 Odor Odorless 9.2 Important health, safety and environmental information 9.2.1 pH pH > 12 The ‘Hazard classification and labelling’ section shows the hazards of a substance based on the standardised system of statements and pictograms established under the CLP (Classification Labelling and Packaging) Regulation. Source. Ecological Toxicity: Toxicity to fish: LC50 - Clarias gariepinus - 33,884 mg/l - 96 h Toxicity to daphnia and other aquatic invertebrates: EC50 - Daphnia magna (Water flea) - 49,1 mg/l - 48 h (OECD Test Guideline 202) IDENTIFICATION Calcium Hydroxide is a soft, white, powdery material with a The threshold quantity and its respective concentration will not be finalized until after public consultation. Product Name: Hydrated Lime (Calcium Hydroxide) UN/MA#: N/A DOT Hazard Class: N/A TYPICAL CHEMICAL COMPOSITION synthetic (CAS 471-34-1) 10 mg/m3 Total Calcium hydroxide (CAS TWA 5 mg/m3 1305-62-0) Biological limit values No biological exposure limits noted for the ingredient(s). Roughness. UN proper shipping name : Corrosive liquid, basic inorganic, N.O.S. OSHA Table Z-1-A (29 CFR 1910.1000) (1989) CALCIUM HYDROXIDE - TWA 15 mg/m3 US. Level of Concern . Bases are chemically similar to sodium hydroxide (NaOH) or sodium oxide (Na2O). This produces calcium oxide. Managing Environmental Impact. Rinse mouth. Calcium hydroxide is a white odourless powder with the chemical formula Ca(OH) 2 SAFETY DATA SHEET 1. Get medical attention in case of uncertainty. According to the National Enforcement and Emergencies Management Information System and Intelligence System (NEMISIS) database, hydrochloric acid and sulphuric acid were both on record as having a “moderate” impact on air, land and fresh water after a spill of 3 tonnes. 58 / Monday, March 26, 2012 / Rules and Regulations 02/28/2015 EN (English) 3 First‐aid measures after inhalation : If breathed in, move person into fresh air. 2001. 2010. Following the risk evaluation methodology developed under section 200 of CEPA 1999, the categories (flammability, combustibility, oxidizers, inhalation toxicity, aquatic toxicity, carcinogenicity, corrosiveness, pool fires) having the lowest scientific threshold will be compared against other risk management considerations. 31. Calcium Hydroxide (1305-62-0) DNEL DNEL 4 mg/m³ (Acute - local effects, inhalation) PNEC PNEC 0.49 mg/l (aqua, freshwater) 8.2. supplier m-i drilling fluids uk ltd, pocra quay, footdee, aberdeen. Special Fire Fighting Procedures:Fire fighters should wear full protective clothing and self-contained breathing apparatus. Appropriate engineering controls Appropriate engineering controls : Ensure good ventilation of the work station. After preliminary consultation, the proposed threshold for strong acids and bases has been increased to 3 tonnes with a concentration set at 0.1%. Refer for medical attention . Refer for medical attention . May also have poor ingredient disclosure. 1305-62-0 Calcium Hydroxide 39% Irritant (Xi) R 36 / 38 Skin irritation; 2 Eye irritation; 2 4.0 First Aid Measures 4.1 Special Instructions Show this safety data sheet to medical personnel. The Environmental Emergency Regulations, developed under Part 8 of the Canadian Environmental Protection Act, CEPA), 1999 (Government of Canada, 2011) establishes a list of substances for which fixed facilities must notify Environment Canada that they store or use the substance on-site, by providing notices to Environment Canada, reporting when the substance is released into the environment, and developing an environmental emergency plan (E2 plan) for each substance stored or used at a fixed facility at or above specified threshold quantities. HAZARD SUMMARY * Calcium Hydroxide can affect you when breathed in. CALCIUM HYDROXIDE can be found in 28 products. In 1920, Herman introduced calcium hydroxide to dentistry as a pulp-capping ma-terial but today it is used widely in the field of endodontics [2] [3]. Eng. US DOT U.S. Dept. Environmental Emergency Regulations, Canadian Environmental Protection Act, 1999. 2011. [Note: Readily absorbs CO₂ from the air to form calcium carbonate.] Limewater . A proposed threshold of 3 tonnes with a minimum concentration of 0.1% and at a pH ≥ 11.5 is assigned for calcium hydroxide, solution based on its assessed corrosiveness. low . Attacks many metals in the presence of water. At high pH value (see common ion effect ), its solubility drastically decreases. This behavior is relevant to cement pastes. 2014. 4. Federal Register, 59(20). Print Share on: Evidence. Use media appropriate for surrounding fire. Washington (DC). 1.3 Details of the supplier of the safety data sheet Company : Central Drug House (P) Ltd 7/28 Vardaan House New Delhi-10002 INDIA Identification Product identifier Mississippi Lime Liquid Calcium Hydroxide (LCH) Other means of identification Product code Liquid Calcium Hydroxide, LCH, Liquid Calcium Hydroxide MP, LCH MP Industrial, Chemical, Construction, Environmental and Water Treatment applications of calcium Fresh air, rest. [Note: Readily absorbs CO₂ from the air to form calcium carbonate.] The concentration at 0.1% will result in a pH ≤ 2 or pH ≥ 11.5 for strong bases or acids. The dry salts are explosive [Chem. In no event shall Supplier be responsible for damages of any nature whatsoever resulting Even if the quantity of a substance in use is below the threshold quantity indicated in the Environmental Emergency Regulations, Environment Canada recommends that emergency planning be applied to this substance in order to minimize, or prevent, any impacts on humans or the environment in the event of a release of the substance. SPILLS Sweep up dry spillage where possible and minimize flushing with water. Calcium hydroxide . 8.3. news 30:2344 1952]. 2.3 Human Health Hazard: Inhalation Toxicity. Safety Data Sheet Calcium Hydroxide/Lime SDS Section 1. Wear safety goggles, face shield or eye protection in combination with breathing protection. Product Identification. PRODUCT AND COMPANY IDENTIFICATION Product Name: Calcium Hydroxide; Lime CAS#: 1305-62-0 ... environment, and for health and safety purposes. H335 May cause respiratory irritation. MSDS Sheet – Calcium Hydroxide. PREVENT DISPERSION OF DUST! fish kill) or not easily identifiable (e.g. 1994. Formula: Ca(OH)2 3 Effective date : 12.14.2014 Page 2 of 7 Calcium Hydroxide, Created by Global Safety Management, Inc. -Tel: 1-813-435-5161 - www.gsmsds.com Summary of Risk Evaluation Framework for Determining Quantity Thresholds and Concentrations for Substances under the Environmental Emergency Regulations set under the Canadian Environmental Protection Act, 1999 (CEPA 1999). 1305-62-0) in use in Canada indicates that the substance exists in commerce. Safety Data Sheet Calcium Hydroxide/Lime SDS Section 1. news 30:2344 1952]. Grade D. High Concern. Genium. SAFETY DATA SHEET (REGULATION (EC) n° 1907/2006 - REACH) Version 3.2 (04/03/2014) - Page 2/9 PRODUITS DENTAIRES SA Name : CALCIUM HYDROXIDE POWDER - ART.11025 Product identifiers : EC 215-137-3 HYDROXYDE DE CALCIUM Hazard statements : H315 Causes skin irritation. Environment Canada. Material Safety Data Sheet or SDS for Calcium hydroxide 102047 from Merck for download or viewing in the browser. benign, health . Use local exhaust or breathing protection. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. The inorganic compound is of ionic crystalline chemical character. form salts with inorganic bases such as CALCIUM HYDROXIDE. They neutralize acids exothermically to … (Calcium hydroxide mixture) 14.3. : 1. Calcium dihydroxide is a … Calcium Hydroxide CAS No 1305-62-0 MATERIAL SAFETY DATA SHEET SDS/MSDS. U.S. EPA (U.S. Environmental Protection Agency). Calcium hydroxide-based preparations present minimal hazard in the quantities provided. # EC# IUPAC Name WT % Calcium Hydroxide 1305-62-0 / 215-137-3 calcium dihydroxide 100 Refer to Section 16 for the full text of the GHS and H phrases and EUClassifications and R Phrases. Likely hazards to health or the environment. * Breathing Calcium Hydroxide can irritate the nose, throat and lungs causing coughing, wheezing and/or shortness of breath. FIRST-AID MEASURES Routes of Exposure First Aid Instructions Burning sensation. The solution in water is a medium strong base. Do NOT induce vomiting. CALCIUM HYDROXIDE: ICSC: 0408: Calcium dihydroxide Calcium hydrate Hydrated lime Slaked lime: September 1997: CAS #: 1305-62-0 EC Number: 215-137-3 ACUTE HAZARDS PREVENTION FIRE FIGHTING; FIRE & EXPLOSION: Not combustible. Give nothing to drink. Environmental hazards Marine pollutant #1 : NAP 14.6. Medical observation is indicated. Health issue . 2007. Repeated or prolonged inhalation of dust particles may cause effects on the lungs. Tennessee. Proposed thresholds may also be modified based on policy and other considerations as assessed during the public consultation period. Fever, sneezing, runny nose, sore throat, and pneumonia are some of the severe consequences of coming in contact with this chemical. 1. Calcium Hydroxide Hydrated Lime Slaked Lime SDS GHS, MSDS Sheet. Therefore, no threshold is set for the inhalation toxicity to humans. SECTION XIV - TRANSPORT INFORMATION SEA TRANSPORTATION: IMCO #: Not regulated UN #: Not regulated Substance(s) determined hazard: Not regulated Calcium Hydroxide is harmful to aquatic environment at low concentrations. Genium Group Inc. CAL5160. Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. Environment Canada. Abdominal pain. OELs. Environment Canada. CALCIUM HYDROXIDE TWA 5 mg/m3 US. Calcium hydroxide (CAS TWA 5 mg/m3 1305-62-0) US. To determine if a substance is a candidate to be added to the Environmental Emergency Regulations, Environment Canada has developed a risk evaluation methodology based on the following hazard categories: For more information on the methodology for setting threshold quantities in the Environmental Emergency Regulations, please refer to Summary of Risk Evaluation Framework for Determining Quantity Thresholds and Concentrations for Substances under the Environmental Emergency Regulations. Ecological Information. At ambient temperature, calcium hydroxide ( portlandite) dissolves in pure water to produce an alkaline solution with a pH of about 12.4. # EC# IUPAC Name WT % Calcium Hydroxide 1305-62-0 / 215-137-3 calcium dihydroxide 100 Refer to Section 16 for the full text of the GHS and H phrases and EUClassifications and R Phrases. PROP 65 This quantity for spills of 3 tonnes in NEMISIS is also the same as the quantity recommended by TDG for their ERAP for sulphuric acid, nitric acid, hydrobromic acid and perchloric acid (Environment Canada, 2015). You assume the entire risk of relying on this Information. The dry salts are explosive [Chem. 2015. Chemical dangers Product Name:Calcium Hydroxide (Hydrated Lime) EPA Reg. Specifications of Calcium Hydroxide. You assume the entire risk of relying on this Information. Ulceration and scarring of skin are some of the most commonly observed hazards of NaOH. Product name : Calcium Hydroxide CAS-No. 1305-62-0 Calcium Hydroxide 39% Irritant (Xi) R 36 / 38 Skin irritation; 2 Eye irritation; 2 4.0 First Aid Measures 4.1 Special Instructions Show this safety data sheet to medical personnel. Decomposes on heating. Dentsply Sirona Pty Ltd Chemwatch Hazard Alert Code: 2 Dycal Radiopaque Calcium Hydroxide - Base Paste Chemwatch: 4993-50 Version No: 2.1.1.1 Safety Data Sheet according to WHS and ADG requirements Issue Date: 27/06/2017 Print Date: 04/01/2018 S.GHS.AUS.EN SECTION 1 IDENTIFICATION OF THE SUBSTANCE / MIXTURE AND OF THE COMPANY / UNDERTAKING of Transportation - Not Regulated. Therefore, no threshold is set for the inhalation toxicity to humans.