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Send EmailCalcium Oxide, Quicklime, Burnt Lime, Caustic Lime, Flux Lime, E529, 1305-78-8
CALCIUM OXIDE (CaO - QUICKLIME - E529)
PRODUCT IDENTIFICATION INFORMATION
| Parameter | Information |
|---|---|
| Product Name | Calcium Oxide |
| Chemical Name | Calcium Oxide |
| Synonyms (Turkish) | Kalsiyum Oksit, Sönmemiş Kireç, Yanmış Kireç, Kalsiyum Monooksit, Kireç |
| Synonyms (English) | Calcium Oxide, Quicklime, Burnt Lime, Calx, Calcia, Caustic Lime, Flux Lime |
| E Number | E529 |
| CAS Number | 1305-78-8 |
| EC Number | 215-138-9 |
| Molecular Formula | CaO |
| Molecular Weight | 56.08 g/mol |
| Appearance | White to yellowish or brownish powder or crystalline solid |
| Odor | Odorless |
CHEMICAL STRUCTURE
Calcium Oxide Structure:
Ca²⁺ O²⁻
Structure Description:
-
Ionic compound composed of calcium cation (Ca²⁺) and oxide anion (O²⁻).
-
White to yellowish or brownish crystalline solid.
-
Strongly basic oxide (alkaline earth metal oxide).
-
Reacts exothermically with water to form calcium hydroxide [Ca(OH)₂].
-
High melting and boiling points.
SECTION 1: CHEMICAL IDENTITY AND DESCRIPTION
| Parameter | Information |
|---|---|
| Product Name | Calcium Oxide |
| Chemical Name | Calcium Oxide |
| Synonyms (Turkish) | Kalsiyum Oksit, Sönmemiş Kireç, Yanmış Kireç, Kalsiyum Monooksit, Kireç |
| Synonyms (English) | Calcium Oxide, Quicklime, Burnt Lime, Calx, Calcia, Caustic Lime, Flux Lime, Airlock Lime |
| E Number | E529 |
| CAS Number | 1305-78-8 |
| EC Number | 215-138-9 |
| Molecular Formula | CaO |
| Molecular Weight | 56.08 g/mol |
| Chemical Class | Inorganic oxide; Basic oxide; Alkaline earth metal oxide |
| Source | Natural (calcination of limestone/calcium carbonate) |
| Physical State (20°C) | Solid (powder or crystalline) |
| Odor | Odorless |
| Color | White to yellowish or brownish |
SECTION 2: PHYSICAL AND CHEMICAL PROPERTIES
| Property | Value | Test Method / Note |
|---|---|---|
| Appearance | White to yellowish or brownish powder or crystalline solid | Visual |
| Odor | Odorless | Olfactometric |
| Molecular Weight | 56.08 g/mol | Calculated |
| Density | 3.34 g/cm³ | ASTM D4052 |
| Melting Point | 2613°C | DSC |
| Boiling Point | 2850 – 3850°C (varies by literature) | – |
| Solubility in Water | Reacts (exothermic) to form Ca(OH)₂ | – |
| Solubility in Acids | Soluble | General Method |
| Solubility in Alcohol | Insoluble | General Method |
| pH (Slurry) | ~12.4 (strongly alkaline) | – |
| Stability | Stable; Reacts with water and acids | – |
| Reactivity | Strongly reactive with water (exothermic) | – |
| Hygroscopicity | High (absorbs moisture from air) | – |
| Heavy Metals (as Pb) | ≤ 10 ppm | AAS / ICP |
| Arsenic (As) | ≤ 2 ppm | AAS / ICP |
| Lead (Pb) | ≤ 2 ppm | AAS / ICP |
| Magnesium Oxide (MgO) | ≤ 1.0% | – |
| Silica (SiO₂) | ≤ 1.0% | – |
| Iron (Fe₂O₃) | ≤ 0.5% | – |
| Alumina (Al₂O₃) | ≤ 0.5% | – |
| Loss on Ignition | ≤ 2.0% | Gravimetric |
| Assay (CaO) | ≥ 90.0 – 98.0% (grade dependent) | Titrimetric |
SECTION 3: CALCIUM OXIDE vs OTHER CALCIUM COMPOUNDS
| Property | Calcium Oxide (CaO) | Calcium Hydroxide Ca(OH)₂ | Calcium Carbonate CaCO₃ | Calcium Chloride CaCl₂ |
|---|---|---|---|---|
| CAS Number | 1305-78-8 | 1305-62-0 | 471-34-1 | 10043-52-4 |
| Molecular Weight | 56.08 g/mol | 74.09 g/mol | 100.09 g/mol | 110.98 g/mol |
| Solubility in Water | Reacts (exothermic) | Slightly soluble | Insoluble | Highly soluble |
| pH (1% Solution) | ~12.4 | ~12.4 | ~9.5 | ~8.0 |
| Reactivity | Very high | Moderate | Low | Moderate |
| Heat of Hydration | High (exothermic) | None | None | Moderate |
| Primary Use | Cement, steel, water treatment | pH adjustment, mortars | Construction, antacid | De-icing, drying |
| CO₂ Content | None | None | ~44% | None |
| Applications | High-temperature processes | Building materials, water treatment | Construction, agriculture | De-icing, oil drilling |
SECTION 4: MECHANISM OF ACTION
| Property | Description |
|---|---|
| Slaking (Hydration) | Reacts exothermically with water: CaO + H₂O → Ca(OH)₂ + Heat (64 kJ/mol); Produces calcium hydroxide (slaked lime); Releases significant heat; Used in lime slaking processes. |
| Basicity / Neutralization | Strongly basic oxide; Neutralizes acids to form calcium salts; Used in wastewater treatment (acid neutralization); pH adjustment in various processes. |
| Fluxing Action (Metallurgy) | Reacts with acidic impurities (SiO₂, P₂O₅, S); Forms slag with lower melting point; Removes impurities from molten steel; Improves steel quality. |
| Coagulation (Water Treatment) | Raises pH of water; Precipitates heavy metals as hydroxides; Coagulates suspended solids; Clarifies water. |
| Carbonation | Absorbs CO₂ from air: CaO + CO₂ → CaCO₃; Forms calcium carbonate (limestone) upon exposure to air; Used in CO₂ capture applications. |
| Drying | Acts as a desiccant (drying agent); Absorbs moisture from gases and liquids; Used in dehydration processes. |
SECTION 5: PRODUCTION PROCESS
Industrial Production Method (Calcination):
Reaction: CaCO₃ (s) → CaO (s) + CO₂ (g)
Process Flow:
Limestone (Calcium Carbonate) → Quarrying → Crushing → Sizing → Calcination (Kiln, 900-1200°C) → Calcium Oxide (Quicklime) → Cooling → Screening → Packing/Silo Storage
Step-by-Step Description:
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Raw Material: High-quality limestone (calcium carbonate, CaCO₃) is quarried.
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Crushing and Sizing: Limestone is crushed and screened to appropriate size.
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Calcination: Crushed limestone is heated in a kiln (rotary kiln, vertical shaft kiln) at 900-1200°C.
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Decomposition: Calcium carbonate decomposes into calcium oxide (quicklime) and carbon dioxide gas.
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Cooling: The hot quicklime is cooled in a cooler.
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Screening: Cooled quicklime is screened to remove fines.
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Storage: Product is stored in sealed silos or packaged immediately to prevent hydration.
Note: The process is highly energy-intensive. The quality of the limestone (purity) determines the quality of the quicklime.
SECTION 6: FUNCTIONAL PROPERTIES
| Property | Description |
|---|---|
| Fluxing Agent (Metallurgy) | Removes impurities (sulfur, phosphorus, silica) from molten metals; Forms slag; Improves steel quality and purity. |
| Neutralizing Agent (Water Treatment) | Neutralizes acidic wastewater; Raises pH of acidic streams; Precipitates heavy metals (e.g., Fe, Cu, Zn, Pb). |
| Binder (Construction) | Reacts with water and CO₂ to harden; Used in cement and mortar production; Base material for lime-based plasters and mortars. |
| Soil Amendment (Agriculture) | Raises soil pH (corrects acidity); Provides calcium to plants; Improves soil structure and fertility. |
| Dehydrating Agent | Absorbs moisture from gases and liquids; Used as a desiccant; Prevents moisture in various applications. |
| Precipitating Agent | Precipitates impurities from solutions; Used in sugar refining and paper manufacturing; Clarifies liquids. |
| Catalyst Support | Used as a support material for catalysts; Provides high surface area; Used in chemical processes. |
SECTION 7: MAIN APPLICATION AREAS
| Industry / Sector | Function | Typical Use |
|---|---|---|
| Construction / Cement | Binder, cement component | Portland cement production (clinker formation); Lime-based mortars and plasters; Concrete additive; Onsuz üretim mümkün değil. |
| Metallurgy | Fluxing agent, slag former | Steelmaking (basic oxygen furnace); Removes sulfur, phosphorus, silica; Improves steel quality; Nickel and copper smelting. |
| Water & Wastewater Treatment | Neutralizer, coagulant, pH adjuster | Acid neutralization; Heavy metal precipitation; pH adjustment; Drinking water treatment (softening). |
| Agriculture | Soil amendment, fertilizer additive | Soil pH adjustment (lime application); Corrects soil acidity; Provides calcium; Improves soil structure. |
| Paper Industry | Precipitant, pulping agent | Pulping and bleaching processes; Calcium carbonate precipitation; Paper coating and filling. |
| Food & Pharmaceutical | Processing aid (E529) | Sugar refining (clarification); Gelatin production; Food additive (E529); Calcium fortification; pH adjustment. |
| Energy & Technology | CO₂ capture, fuel cells | Solid oxide fuel cells; CO₂ capture and sequestration; Oxygen production systems. |
| Glass Industry | Stabilizer, flux | Glass manufacturing (lime component); Improves durability; Reduces melting temperature. |
| Chemical Industry | Desiccant, catalyst support | Drying agent for gases and liquids; Catalyst support; Production of calcium compounds. |
| Animal Feed | Mineral supplement | Calcium source in animal feed formulations; Poultry and livestock nutrition. |
SECTION 8: SAMPLE FORMULATIONS
Lime Slurry (For Water Treatment):
| Component | Amount |
|---|---|
| Calcium Oxide (Quicklime) | 10 – 20% |
| Water | 80 – 90% |
Instructions: Slowly add quicklime to water with continuous stirring (caution: exothermic reaction); Use appropriate equipment; Allow to cool; Dilute as needed for application.
Lime Mortar (For Construction):
| Component | Amount |
|---|---|
| Calcium Oxide (Slaked to putty) | 1 part |
| Sand | 3 parts |
| Water | As required |
Instructions: Slake quicklime with water to form lime putty; Mix with sand and water; Use within 1-2 days; Allow to harden by carbonation.
SECTION 9: QUALITY SPECIFICATIONS
| Parameter | Construction Grade | Metallurgical Grade | Food/Pharma Grade (E529) | Test Method |
|---|---|---|---|---|
| Appearance | White to grey powder | White to grey powder | White powder | Visual |
| Assay (CaO) | ≥ 90.0% | ≥ 92.0% | ≥ 98.0% | Titrimetric |
| Magnesium Oxide (MgO) | ≤ 2.0% | ≤ 1.0% | ≤ 0.5% | – |
| Silica (SiO₂) | ≤ 1.0% | ≤ 1.0% | ≤ 0.5% | – |
| Loss on Ignition | ≤ 2.0% | ≤ 2.0% | ≤ 1.0% | Gravimetric |
| Heavy Metals (as Pb) | – | – | ≤ 10 ppm | AAS / ICP |
| Arsenic (As) | – | – | ≤ 2 ppm | AAS / ICP |
| Lead (Pb) | – | – | ≤ 2 ppm | AAS / ICP |
| Particle Size | Customer requirement | Customer requirement | Customer requirement | Sieve |
SECTION 10: TOXICOLOGICAL PROFILE
| Parameter | Value |
|---|---|
| Acute Oral Toxicity (LD50, Rat) | ~ 3,050 mg/kg (moderate toxicity) |
| Acute Dermal Toxicity | Corrosive; Severe skin burns |
| Skin Irritation | Corrosive (Category 1A/1B/1C) |
| Eye Irritation | Serious eye damage (Category 1) |
| Inhalation Toxicity | May cause respiratory irritation; Corrosive to respiratory tract |
| Chronic Toxicity | Long-term exposure may cause lung damage |
| Carcinogenicity | Not classified as carcinogenic |
| Mutagenicity | Not mutagenic |
| Reproductive Toxicity | No reproductive toxicity at normal levels |
| Environmental Toxicity | Harmful to aquatic life; pH increase in water bodies |
| Special Toxicity Note | Corrosive; Causes severe skin burns and eye damage (H314); Harmful if swallowed (H302); May cause respiratory irritation (H335); Reacts exothermically with water (can cause burns); Use appropriate personal protective equipment; Keep away from moisture. |
SECTION 11: GHS CLASSIFICATION AND LABELING
GHS Classification (in accordance with CLP and UN GHS):
| Hazard Class | Category | H-Statement |
|---|---|---|
| Acute Toxicity (Oral) | Category 4 | H302 |
| Skin Corrosion/Irritation | Category 1 | H314 |
| Serious Eye Damage | Category 1 | H318 |
| Specific Target Organ Toxicity (Single) | Category 3 | H335 |
Signal Word: DANGER
Hazard Pictograms: GHS05 (Corrosive), GHS07 (Exclamation Mark)
Hazard Statements (H-Codes):
| Code | Statement |
|---|---|
| H302 | Harmful if swallowed |
| H314 | Causes severe skin burns and eye damage |
| H318 | Causes serious eye damage |
| H335 | May cause respiratory irritation |
NFPA 704 Hazard Classification:
| Health | Flammability | Reactivity | Special |
|---|---|---|---|
| 3 | 0 | 2 | W |
| (Severe health hazard - corrosive) | (Non-flammable) | (Moderate reactivity - reacts with water) | (Reacts with water) |
SECTION 12: PRECAUTIONARY STATEMENTS (P-CODES)
| Code | Statement |
|---|---|
| P260 | Do not breathe dust/fume/gas/mist/vapors/spray |
| P264 | Wash hands thoroughly after handling |
| P280 | Wear protective gloves/protective clothing/eye protection/face protection |
| P301+P330+P331 | IF SWALLOWED: Rinse mouth. Do NOT induce vomiting |
| P303+P361+P353 | IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower |
| P304+P340 | IF INHALED: Remove person to fresh air and keep comfortable for breathing |
| P305+P351+P338 | IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and continue rinsing |
| P310 | Immediately call a POISON CENTER/doctor |
| P335+P334 | Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages |
| P363 | Wash contaminated clothing before reuse |
| P403+P233 | Store in a well-ventilated place. Keep container tightly closed |
| P405 | Store locked up |
| P501 | Dispose of contents/container in accordance with local/regional/national/international regulations |
SECTION 13: FIRST AID MEASURES
| Exposure Route | Action to Take |
|---|---|
| Inhalation | Remove to fresh air immediately. If breathing is difficult, give oxygen. If respiratory irritation develops, seek medical attention. |
| Skin Contact | IMMEDIATELY REMOVE CONTAMINATED CLOTHING. Brush off dry particles. Rinse with plenty of water for at least 15 minutes. Get immediate medical attention. |
| Eye Contact | IMMEDIATELY rinse with plenty of water for at least 15 minutes. Keep eyelids open. Remove contact lenses if present. Get immediate medical attention. |
| Ingestion | DO NOT INDUCE VOMITING. Rinse mouth. Drink plenty of water (only if conscious). Get immediate medical attention. |
| Note | Calcium oxide is corrosive; burns from water contact (slaking reaction) generate heat; do not use wet bandages for dry powder on skin without first brushing off. |
SECTION 14: FIREFIGHTING MEASURES
| Parameter | Information |
|---|---|
| Fire Hazard | Non-flammable. However, reacts with water to release heat (exothermic). |
| Hazards Arising from Fire | Not combustible; But may cause fire/explosion when in contact with water (heat generation). |
| Suitable Extinguishing Media | Dry chemical powder, sand, CO₂ (for surrounding fires). |
| Unsuitable Extinguishing Media | Water, foam (reacts violently with water) |
| Special Protective Equipment | Self-contained breathing apparatus (SCBA), full protective clothing, chemical-resistant gloves. |
| Special Precautions | DO NOT USE WATER on burning calcium oxide; Avoid contact with water; Evacuate area; Use dry extinguishing agents. |
SECTION 15: STORAGE AND SHELF LIFE
| Parameter | Information |
|---|---|
| Storage Conditions | Store in a cool, dry, well-ventilated area; PROTECT FROM MOISTURE; Keep away from water and acids; Store separate from flammable materials. |
| Container Requirements | Tightly closed, moisture-proof containers (sealed silos, PE-lined bags, HDPE drums). |
| Materials to Protect From | Moisture, water, acids, organic materials |
| Shelf Life | 12 – 24 months (in unopened original packaging, under proper storage conditions). |
| Stability Note | Stable under recommended storage conditions; Highly hygroscopic (absorbs moisture); Reacts with CO₂ in air to form CaCO₃; May deteriorate (slake) if exposed to moisture. |
| Special Storage Requirements | Store in a dry, cool place; Avoid exposure to air and moisture; Opened containers must be resealed immediately; Keep away from water and acids. |
SECTION 16: PACKAGING OPTIONS
| Packaging Type | Quantity | Material |
|---|---|---|
| PE-Lined Paper Bag | 25 kg, 40 kg, 50 kg | PE-lined kraft paper bag (moisture-proof) |
| Plastic Bag | 10 kg, 25 kg, 50 kg | PE bag (inner-lined, sealed, moisture-proof) |
| Plastic Drum | 25 kg, 50 kg, 100 kg | HDPE / Polypropylene (moisture-proof) |
| Fiber Drum | 25 kg, 50 kg | PE-lined fiberboard drum |
| FIBC / Big Bag | 500 kg, 1000 kg, 1500 kg | PE-lined, moisture-resistant PP woven bag |
| Silo (Bulk) | Custom quantities | Sealed steel silo (with inert gas blanketing) |
SECTION 17: TRANSPORT INFORMATION
| Parameter | Information |
|---|---|
| UN Number | UN 1910 (Calcium Oxide) |
| Hazard Class | Class 8 - Corrosive Substances |
| Packing Group | III |
| ADR/RID | Class 8; UN 1910; Packing Group III |
| IMDG Code | Class 8; UN 1910; Marine pollutant: No |
| IATA (Air) | Class 8; UN 1910; Packing Group III |
| Transport Label | Corrosive (Class 8) |
| Marine Pollutant | No |
| Special Transport Requirements | PROTECT FROM MOISTURE; Segregation from water, acids, and combustible materials; Handle with care; Keep dry. |
SECTION 18: REGULATORY STATUS
| Region / Authority | Status |
|---|---|
| European Union | REACH registered; Regulated as corrosive substance; E529 approved as food additive. |
| USA (TSCA) | Listed (TSCA Inventory) |
| USA (FDA) | GRAS (Generally Recognized as Safe); 21 CFR 184.1210; Approved as food additive (E529). |
| Turkey | Regulated as hazardous chemical; Subject to KKDIK regulation; Ministry of Environment and Ministry of Agriculture controls; Food grade E529 requires Ministry of Health approval. |
| IARC | Not classified (non-carcinogenic) |
| NTP | Not listed |
| OSHA | Regulated as corrosive; PEL: 5 mg/m³ (respirable dust). |
| California (Prop 65) | Not listed |
| Halal | Yes (mineral source, not from animals) |
| Kosher | Yes (with certification) |
| Vegan | Yes (mineral, no animal ingredients) |
SECTION 19: OTHER NAMES AND SYNONYMS
| Type | Name |
|---|---|
| Turkish Names | Kalsiyum Oksit, Sönmemiş Kireç, Yanmış Kireç, Kalsiyum Monooksit, Kireç |
| English Names | Calcium Oxide, Quicklime, Burnt Lime, Calx, Calcia, Caustic Lime, Flux Lime |
| Sectoral Names | Construction: Quicklime; Metallurgy: Flux Lime, Burnt Lime; Water Treatment: Calcium Oxide; Agriculture: Lime, Calcia |
| E Number | E529 |
| CAS Number | 1305-78-8 |
| EC Number | 215-138-9 |
| HS Code | 2825.90 |
SECTION 20: SUMMARY TABLE
| Parameter | Value |
|---|---|
| Product | Calcium Oxide (Quicklime - E529) |
| CAS Number | 1305-78-8 |
| E Number | E529 |
| Molecular Formula | CaO |
| Molecular Weight | 56.08 g/mol |
| Appearance | White to yellowish/brownish powder or crystalline solid |
| Melting Point | 2613°C |
| Density | 3.34 g/cm³ |
| Reaction with Water | Exothermic (CaO + H₂O → Ca(OH)₂) |
| Primary Functions | Fluxing agent, neutralizer, binder, soil amendment, desiccant |
| Main Application Areas | Construction (cement), metallurgy (steel), water treatment, agriculture, paper, food (E529), energy, glass |
| Shelf Life | 12 – 24 months |
| GHS Signal Word | DANGER |
| UN Number | 1910 |
| Hazard Class | Class 8 (Corrosive) |
| Packing Group | III |
| Special Properties | Strong base; Corrosive; Reacts violently with water (exothermic); Hygroscopic; High temperature stability; Essential in cement and steel production; FDA GRAS; Vegan; Halal. |
SECTION 21: CRITICAL WARNINGS AND BEST PRACTICES
CRITICAL WARNINGS:
-
CORROSIVE (H314, H318): Causes severe skin burns and eye damage. PERSONAL PROTECTIVE EQUIPMENT IS MANDATORY.
-
REACTS VIOLENTLY WITH WATER (exothermic): Generates heat and steam; Can cause burns and splashing. DO NOT USE WATER on spills/fires.
-
HARMFUL IF SWALLOWED (H302): Avoid ingestion.
-
MAY CAUSE RESPIRATORY IRRITATION (H335): Avoid inhalation of dust.
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HYGROSCOPIC: Absorbs moisture from air; Store in tightly closed, moisture-proof containers.
-
REACTS WITH CO₂: Absorbs CO₂ from air to form calcium carbonate (CaCO₃); Affects product quality over time.
-
HIGH TEMPERATURE: Extreme melting point; Suitable for high-temperature processes.
-
ESSENTIAL INDUSTRY: Onsuz çimento ve çelik üretimi mümkün değildir.
-
FOOD GRADE: E529 approved; High purity required for food applications.
BEST PRACTICE RECOMMENDATIONS:
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Construction / Cement: Use as cement component and binder; Essential for clinker formation; Onsuz çimento üretimi mümkün değil; Use in lime-based mortars and plasters.
-
Metallurgy: Use as fluxing agent and slag former; Steelmaking (basic oxygen furnace); Removes sulfur, phosphorus, silica; Essential in steel production.
-
Water Treatment: Use as neutralizer and coagulant; Acid neutralization; Heavy metal precipitation; pH adjustment; Drinking water softening.
-
Agriculture: Use as soil amendment (lime application); Corrects soil acidity; Apply 1-5 tons per hectare; Provides calcium; Improves soil structure.
-
Paper Industry: Use in pulping and bleaching processes; Calcium carbonate precipitation; Paper coating and filling.
-
Food & Pharmaceutical: Use as processing aid (E529); Sugar refining; Gelatin production; Calcium fortification; Only food-grade material.
-
Handling: Use in well-ventilated areas; Avoid dust formation; Use dust masks (N95/FFP2) when handling powder; Use gloves and safety goggles; Avoid contact with water; Add quicklime to water slowly (not water to quicklime) for slaking.
-
Personal Protective Equipment: MANDATORY: Chemical-resistant gloves (nitrile, neoprene), safety goggles or face shield, protective clothing, dust mask (N95/FFP2 or higher), chemical-resistant boots.
-
Hygiene: Wash hands thoroughly after handling; Do not eat, drink, or smoke while using; Remove contaminated clothing and wash before reuse.
-
Storage: Store in tightly closed, moisture-proof containers; Store in cool, dry, well-ventilated area; Protect from moisture and CO₂; Keep away from water and acids; Opened containers must be resealed immediately; Shelf life: 12-24 months under proper conditions.
-
Spill Management: DO NOT USE WATER. Sweep or vacuum (HEPA) and place in suitable sealed container; Avoid dust formation; Do not allow entry into drains or waterways; Neutralize with dilute acid (carefully) if needed.
-
Disposal: Dispose of in accordance with local, regional, and national regulations; Hazardous waste (corrosive); Neutralize with water/acids before disposal (carefully); Use authorized disposal facilities.
DETECTION METHODS:
| Method | Description | Advantages | Disadvantages |
|---|---|---|---|
| Titrimetric (Acid-Base) | Neutralization with standard acid | Simple, accurate, standard method | Requires indicator |
| AAS / ICP | Calcium and trace element analysis | High sensitivity, accurate | High cost, requires expertise |
| XRF (X-Ray Fluorescence) | Elemental analysis | Rapid, non-destructive | Requires calibration |
| XRD (X-Ray Diffraction) | Phase identification | Determines crystalline phases | High cost, requires expertise |
| Loss on Ignition | CO₂ and volatile content | Simple, standard method | Time-consuming |
CALCIUM OXIDE vs ALTERNATIVES COMPARISON:
| Product | Chemical Name / E Code | Application | Strength | Weakness | Status |
|---|---|---|---|---|---|
| Calcium Oxide (CaO) | Quicklime (E529) | Cement, steel, water treatment | High reactivity, cheap, abundant, high temp stability | Corrosive, reacts with water | Essential (cement/steel) |
| Calcium Hydroxide | Slaked Lime (E526) | Mortar, water treatment | Safer, easier to handle | Lower reactivity | Widely used |
| Calcium Carbonate | Limestone (E170) | Construction, antacid | Inert, safe, cheap | Low reactivity | Widely used |
| Sodium Hydroxide | Caustic Soda (E524) | Water treatment, pH adjustment | High solubility, fast action | Higher cost, corrosive | Widely used |
| Magnesium Oxide | Magnesia (E530) | Refractory, steelmaking | High temp stability | Higher cost, lower basicity | Limited |
LEGAL DISCLAIMER:
The information provided in this document is based on our current knowledge and experience and is presented in good faith. However, as all conditions of use are beyond our control, it does not constitute a binding specification or warranty. This Technical Data Sheet is for informational purposes only. Users are responsible for testing the suitability for their own applications and for complying with all local, regional, and national regulations. For complete safety, storage, use, handling, waste, and regulatory compliance information, please refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Calcium oxide is a corrosive substance that reacts violently with water; strict safety protocols must be followed at all times.
