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Calcium Hydroxide(Hydrated lime) Amaris Chemicals

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Calcium Hydroxide Hydrated Lime

Original price was: $ 1.21.Current price is: $ 1.09.

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Calcium Hydroxide Hydrated Lime, commonly known as Hydrated Lime or Slaked Lime, is an inorganic compound with the chemical formula Ca(OH)₂. It appears as a white, odorless, powder or crystalline solid. It is produced by treating quicklime (calcium oxide) with water in a process called slaking. Calcium Hydroxide is moderately soluble in water, forming a strongly alkaline solution known as limewater. It is widely used in construction, environmental, chemical, agricultural, and water treatment applications due to its caustic, neutralizing, and flocculating properties.

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Categories: pH Modifiers, Soil Conditioners Tags: Calcium hydroxide, Construction material, Hydrated lime, pH Regulator, Soil stabilization, Water treatment chemical, White powder

Description

Table of Contents

Calcium Hydroxide Hydrated Lime

Primary Uses

Construction & Building Materials
- Used as a key ingredient in mortar, plaster, and cement for masonry and plastering works.
- Acts as a stabilizing agent in soil stabilization and road construction.
Water Treatment
- Employed to raise pH and neutralize acidic water in municipal and industrial water treatment plants.
- Used as a flocculant to remove impurities and heavy metals from wastewater.
Chemical Industry
- Utilized as a neutralizing agent in chemical processes and as a raw material for calcium salts production.
- Used in the manufacture of bleaching powder and other calcium compounds.
Agriculture
- Applied to adjust soil pH (liming) to improve fertility and reduce soil acidity.
- Used as a pesticide and fungicide to control pests and diseases in crops.

Secondary Uses

Food Industry
- Used in food processing as a firming agent, for example, in pickling and in the production of certain sugar syrups.
Environmental Applications
- Applied in flue gas desulfurization to reduce sulfur dioxide emissions from power plants.
Leather Industry
- Utilized in the tanning process for removing hair and impurities from hides.

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): Calcium hydroxide
Common/Trade Name: Calcium Hydroxide, Hydrated Lime, Slaked Lime
CAS Number: 1305-62-0
HS Code: 2825.90.00
Molecular Formula: Ca(OH)₂
Synonyms:
- Slaked lime
- Hydrated lime
- Calcium dihydroxide
- Lime hydrate

2. Physical & Chemical Properties

Physical State: Fine powder or crystalline solid
Color & Odor: White; odorless
Melting Point: Decomposes at ~580°C (releases water and forms calcium oxide)
Boiling Point: Not applicable (decomposes)
Density: Approx. 2.2 g/cm³ (powder bulk density varies)
Solubility: Slightly soluble in water (about 1.73 g/L at 20°C), producing a strongly alkaline solution (pH ~12.4)
pH: Strongly alkaline (in aqueous suspension)
Stability: Stable under normal conditions; reacts with acids and carbon dioxide

3. Safety & Hazard Attributes

Hazard Class (GHS): Corrosive (Skin and eye irritant)
NFPA Ratings:
- Health: 3
- Flammability: 0
- Reactivity: 1
Exposure Limits: OSHA PEL: 5 mg/m³ (respirable dust), 15 mg/m³ (total dust)
Toxicity: Irritant to skin, eyes, and respiratory tract; ingestion of large amounts can cause severe irritation
Reactivity: Reacts vigorously with acids; reacts with carbon dioxide forming calcium carbonate

4. Storage & Handling Attributes

Storage Conditions: Store in a cool, dry, well-ventilated area away from moisture and acids
Container Type: Airtight, moisture-resistant containers such as HDPE bags or drums
Shelf Life: Stable for several years if stored properly
Special Handling: Use PPE; avoid dust inhalation and contact with skin/eyes

5. Regulatory & Compliance Attributes

FDA Status: Generally recognized as safe (GRAS) for specific food applications
Pharmacopoeia Compliance: Listed in USP and BP as a reagent and pharmaceutical excipient
Transportation: Not classified as hazardous under most regulations but handle as irritant material
Waste Disposal: Dispose according to local environmental regulations; neutralize before disposal

6. Environmental & Health Impact

Ecotoxicity: Low to moderate; high pH in water can harm aquatic life if released in large quantities
Persistence: Inorganic mineral; does not biodegrade
Bioaccumulation: Not expected to bioaccumulate
Carcinogenicity/Mutagenicity: Not classified as carcinogenic or mutagenic
Biodegradability: Not biodegradable

SAFETY HANDLING PRECAUTIONS

Safety handling precautions

Personal Protective Equipment (PPE):

Protective gloves
Safety goggles or face shield
Dust mask or respirator (for powder handling)
Protective clothing

Handling Measures:

Avoid generating dust
Handle in well-ventilated areas
Prevent skin and eye contact

Storage Measures:

Keep containers tightly closed
Store away from moisture and acids

Hygiene Practices:

Wash hands and exposed skin thoroughly after handling
Do not eat, drink, or smoke during handling

First Aid Measures

Inhalation: Move to fresh air immediately; seek medical attention if breathing difficulty occurs
Skin Contact: Rinse with plenty of water for at least 15 minutes; remove contaminated clothing; seek medical attention if irritation persists
Eye Contact: Rinse immediately with plenty of water for at least 15 minutes; seek urgent medical care
Ingestion: Do not induce vomiting; rinse mouth and seek immediate medical attention

Firefighting Measures

Fire Hazards: Non-flammable but may react with water or acids producing heat
Extinguishing Media: Use water spray, dry chemical, foam, or CO₂ for surrounding fire
Special Precautions: Firefighters should wear full protective gear and SCBA
Decomposition Products: May release calcium oxide and hydroxide vapors under extreme heat