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HOME | OUR VISION | PRODUCTS | MARKET SERVED | CUSTOMER RESPONSE | TECH INFO | MSDS INFO | SAFETY INFO | FEEDBACK | CONTACT INFO |
| Product Name: | Calcium Carbide Lime |
| Chemical Name: | Calcium Hydroxide |
| Formula: | Ca(OH)2 | 0 |
| Chemical Family: | Metal Hydroxide | 1 | 0 |
| Use: | Various chemical and industrial uses such as pH control, industrial water and |
| sewage treatment, stabilization and agricultural. |
| Synonyms: | Carbide sludge, generator slurry, lime slurry, carbide lime, lime sludge, lime |
| hydrate, calcium hydrate, hydrated lime, lime water, slaked lime. |
| ¨ ¨ |
| NFPA Fire: | 0 | HMIS Fire: | 0 | Acute: | Yes |
| NFPA Health: | 1 | HMIS Health: | 1 | Chronic: | No |
| NFPA Reactivity: | 0 | HMIS Reactivity: | 0 | Fire: | No |
| NFPA Special Hazard: | Mixture: | Yes | Reactive: | No |
| Sudden Release Pressure: | No |
| 02. INGREDIENTS - COMPOSITION & INFORMATION |
| PERCENT | EXPOSURE GUIDELINES |
| COMPONENT | CAS No. | (BY WT.) | OSHA - TWA | ACGIH - STEL |
| Calcium hydroxide | 1305-62-0 | 92.5% | 92.5% | 5 mg/m3 | 5 mg/m3 |
| Calcium carbonate | 1317-65-3 | 1.8% | 1.8% | 5 mg/m3 | 10 mg/m3 |
| Silica SiO2 | 1.5% | 1.5% |
| Iron and Alumina Oxides | 1.6% | 1.6% |
| 03. HAZARDS IDENTIFICATION |
| EMERGENCY OVERVIEW: |
| Warning: | May cause skin and eye irritation and burns. |
| Potential Health Effects Information: |
| Routes of Exposure: |
| Inhalation: | Irritating to respiratory tract. Experienced as nausea, vomiting, cough, excess |
| sputum, and chest discomfort. May cause pulmonary edema. |
| Eye Contact: | Exposure may cause severe irritation, experienced as pain, excess tearing, |
| conjunctival edema and hemorrhage, corneal edema and opacification. |
| Skin Contact: | Exposure may cause irritation, seen as redness, with possible swelling. |
| Ingestion: | Exposure can cause burns to mouth, throat, and digestive tract. |
| Chronic Effects: | None established. |
| Medical Conditions Aggravated By | Inhalation may aggravate asthma and inflammatory or fibrotic pulmonary disease. |
| Overexposure: | Because of its irritating properties this material may aggravate an existing |
| dermatitis. |
| Other Effects Of Overexposure | None. |
| Carcinogenicity: | Calcium hydroxide is not listed by NTP, OSHA or IARC. |
| 04. FIRST AID MEASURES |
| Inhalation: | Remove to fresh air. If not breathing, give artificial respiration. If breathing is |
| difficult, give oxygen. Get immediate medical attention. |
| Eye: | Immediately flush with plenty of water and continue flushing for at least fifteen |
| minutes. It may be necessary to physically remove solid particles with a swab. See |
| a physician, preferably an ophthalmologist, immediately. |
| Skin: | Remove contaminated clothing. Wash skin twice with soap and water. Wash |
| clothing before reuse. |
| Ingestion: | Give two glasses of water. Do not induce vomiting. Call a physician. |
| Note To Physician: | Use of acidics to neutralize swallowed contents is contraindicated. Use of an |
| EDTA (ethylenediamine tetraacetic acid) solution for rinsing the eyes may help to |
| remove solid particles of the material and relieve some corneal opacification |
| 05. FIRE FIGHTING MEASURES |
| Flash Point: | Not applicable. |
| Autoignition: | No applicable. |
| Flammable Limits - Lower: | Not applicable. |
| Flammable Limits - Upper: | Not applicable. |
| Extinguishing Media: | Calcium hydroxide cannot catch fire. |
| Fire Fighting Instructions: | None. |
| Fire And Explosion Hazards: | This material is a co-product from acetylene generation. A limited amount of |
| acetylene temporarily remains in solution in the carbide lime slurry at the time of |
| discharge from the generation process. With subsequent agitation from handling |
| and retention in open vessels, the acetylene evolves from solution. A combustible |
| gas mixture could possibly form as a result of the acetylene released into the |
| surrounding air. Acetylene is an extremely flammable gas, which forms explosive |
| mixtures with air and oxidizing agents. |
| Hazardous Combustion Products: | None known. |
| Sensitivity To Static Discharge: | Not applicable. |
| Sensitivity To Mechanical Impact: | Not applicable. |
| 06. ACCIDENTAL RELEASE MEASURES |
| Steps to be taken is material is released | Evacuate all personnel from affected area. Use appropriate personal protective |
| or spilled: | equipment when responding to spills. Keep product contained. |
| Small Release: | Carefully scoop or shovel into a clean dry container for disposal or recovery. For |
| lime that has dried, avoid creating dust. Recovered lime may be collected for reuse. |
| Small amounts may be diluted with water, and flushed to sewer if appropriate |
| approvals are obtained. |
| Large Release: | Keep unnecessary people away. Isolate hazard area. Stay upwind in event of dried |
| material present, and uphill in the event of a slurry spill. Protective clothing and |
| equipment may be necessary to prevent exposure to lime. Personnel responding to |
| large spills should have training in lime characteristics and spill response. Avoid |
| creating dust if material has dried. Keep material away from waterways and |
| sewers. |
| 07. HANDLING AND STORAGE |
| Storage: | Store in a clean, ventilated area. Isolate incompatible materials. Post "NO |
| SMOKING" or "NO OPEN FLAMES" signs. Accumulations of acetylene after its |
| release from the slurry, or from unreacted carbide which continues to generate |
| acetylene, can be ignited by any ignition source. All electrical equipment used in or |
| around carbide lime handling or storage areas should comply with the requirements |
| of the National Electrical Codes. |
| Handling: | Consumption of food or beverages should be prohibited in the work area. Access to |
| storage and handling areas should be limited to trained authorized, personnel only. |
| Maintenance in carbide lime areas should only be started after the atmosphere has |
| been checked to ensure that explosive conditions do not exist. |
| 08. EXPOSURE CONTROLS - PERSONAL PROTECTION |
| Engineering Controls: |
| Ventilation: | Use local exhaust and/or forced ventilation to reduce dust concentrations, if any, to |
| below the exposure limit. |
| Respiratory Protection: |
| General Use: | Respiratory protection is normally not necessary with adequate ventilation. A |
| NIOSH / MSHA approved respirator with dust cartridge should be used in dusty |
| conditions. |
| Emergency Use: | Same as above. |
| Gloves: | Leather gloves for dry material and rubber gloves for slurry. |
| Eye/Face Protection: | All personnel working with or in the area of carbide lime should wear eye protection |
| with side shields. In areas where splashing of lime slurry is likely to occur, |
| chemical splash goggles and a full face shield should be worn for further protection. |
| Other Protective Equipment: | Personnel should wear long-sleeved shirts and long trousers. Clothing which may |
| come in contact with carbide lime should be washed thoroughly before reuse. All |
| areas where carbide lime is handled should have an approved and easily accessible |
| eye wash and safety shower. |
| 09. PHYSICAL AND CHEMICAL PROPERTIES |
| Physical State: | Solid or liquid |
| Color: | White-gray |
| Odor: | Odorless, dust inhalation may be irritating. Slightly bitter, alkaline taste. There may |
| be a slight garlic-like odor present in fresh carbide lime hydride due to minute |
| amounts of dissolved acetylene. The odor dissipates quickly when exposed to air. |
| Molecular Weight: | 74.1 |
| Boiling Point: | 1076°F (580°C) Disassociates to form water and calcium oxide. |
| Specific Gravity: | 2.24 |
| Freezing/Melting Point: | 4658°F (2570°C) for calcium oxide. |
| Vapor Pressure: | Not applicable |
| Vapor Density: | Not applicable |
| Water Solubility: | .185g/100 cc water |
| Expansion Ratio: | Not applicable |
| pH: | 12.454 @ 25°C (77°F) |
| Odor Threshold: | Not applicable |
| Evaporation Rate: | Not applicable |
| Coefficient Of Water/Oil Distribution: | Not applicable |
| 10. STABILITY AND REACTIVITY |
| Chemical Stability: | Stable |
| Conditions To Avoid: | None currently known. |
| Incompatibility With Other Materials: | Acidic material, organic nitro compounds, maleic anhydride, phosphorus, and copper. |
| Hazardous Decomposition Products: | Calcium oxide (formed when heated above 1076°F (580°C)). |
| Hazardous Polymerization: | Will not occur |
| 11. TOXICOLOGICAL INFORMATION |
| LD50: | 7340 mg/kg (oral - rat) |
| Caution: | Lime is nontoxic, however it may cause skin and eye irritation and burns. The |
| irritant effects of lime are due primarily to its alkalinity, but dehydrating and thermal |
| effects may be contributing factors. |
| Irritancy Of Material: | Yes |
| Reproductive Effects: | None. |
| Teratogenicity: | None. |
| Synergistic Materials: | None. |
| Sensitization To Material: | None. |
| Mutagenicity: | None. |
| 12. ECOLOGICAL INFORMATION |
| Physical/Chemical: | While carbide lime may not be considered a hazardous material, adequate |
| precautions should be taken to prevent unauthorized discharge, spills or leakage into |
| rivers, lakes, streams, sewers, or on to lands where it may adversely affect the |
| environment or wildlife. Due to the alkalinity of lime it may be subject to different |
| regulations in different locations. Some local ordinances may be more restrictive |
| than federal regulations. |
| Lime does not contain any Class I or Class II ozone depleting chemicals. (40 CFR |
| 82). Lime is not listed as a marine pollutant. (49 CFR Part 171). |
| Acute and Long Term Toxicity to Fish and Invertebrates TLm Mosquito Fish: 240 |
| ppm/24 hr; 220 ppm/48 hrs; 160ppm/96 hr @ 69.8-73.4° F (21-23°C) |
| 13. DISPOSAL CONSIDERATIONS |
| Waste Disposal Method: | Recovered lime can be collected and reused for many applications such as water |
| treatment, road stabilization, and acid neutralization. |
| When disposal becomes necessary, dispose in accordance with federal, state, and |
| local government regulations. Consult environmental regulatory agencies for |
| guidance on acceptable disposal practices. |
| 14. TRANSPORT INFORMATION |
| DOT/IMO Shipping Name: | Not applicable. |
| Hazard Class: | Not applicable. |
| Identification Number: | Not applicable. |
| PIN: | Not applicable. |
| Product RQ: | Not applicable. |
| Shipping Label: | Not applicable. |
| Placard (When Required): | Not applicable. |
| Special Shipping Information: | None. |
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